Simplicity 400 / 2400 Specifications

GE Consumer & Industrial
Electrical Distribution
®
Limitamp
Medium Voltage Motor Control
2400-7200 Volts
Application and Selection Guide
imagination at work
GE Limitamp® Medium Voltage Motor Control
Contents
The General Electric Limitamp motor control center provides
an economical means of centralizing motor starters and
related control equipment. It permits motor control starters,
feeders, isolator switches, distribution transformers, interlocking
relays, programmable control, metering and other miscellaneous devices to be obtained in a single floor-mounted
structural assembly fed from a common enclosed main bus.
Limitamp motor control centers are constructed of standardized
heavy gauge vertical sections housing vertical and horizontal
buses and compartmented starters. Sections are bolted
together to form a single line-up assembly. The entire center
may be powered by incoming line connection at a single
point. When possible, Limitamp motor control centers bear
UL section and unit labels.
A
General
B
Controllers
C
5kV Load-Break Switches
D
Incoming Line
E
Enclosures
F
Protection & Control
G
Components
H
Application Data
I
Elementary Diagrams
J
Guideform Specifications,
Basic Starter Features
GE Limitamp® Medium Voltage Motor Control
General
GE manufactures and provides full support for the following
types of medium voltage controllers:
Table A.1 Product Scope
Controllers
Design Layout
Construction
1-High 2-High Welded Bolted
CR194 Stationary Vacuum 800 amp
X
X
CR194 Drawout Vacuum 800 amp
X
X
CR194 Stationary Vacuum 400 amp
X
X
CR194 Stationary Vacuum 400 amp
CR194 Drawout Vacuum 400 amp
• Limitamp lineup similar to last three units in the preceding
description. The transformer, 480-volt motor controllers,
and lighting transformer are included in an integrated
Limitamp design.
X
480V
X
X
X
X
Lighting
Limitamp control is designed to meet NEMA ICS 3, Part 2 and
UL 347 requirements. Various enclosure types and constructions are available and there is a broad selection of modifications for complete control and protection of motors used
on modern power-utilization systems with high available
short-circuit currents.
Applications
CR194 Vacuum Limitamp control is a high-interrupting
capacity, high-voltage control applied to distribution systems
rated 2400, 4160 or 4800 volts (7200-volt starters are available
in limited applications.) It is used throughout industry to control
and protect squirrel-cage, wound-rotor and synchronous
motors. It can also be used to feed transformers and other
power-utilization circuits.
• Limitamp lineup consisting of a reversing isolating switch
ahead of a NEMA Class E2 Limitamp motor controller.
• Limitamp lineup consisting of two NEMA Class E2 Limitamp
motor controllers, each having interrupting ratings per
Table B.1.
Typical applications are in paper, steel, cement, rubber, mining,
petroleum, chemical and utility-type industries. Limitamp
control is also used in water and sewage plants and public
buildings for air conditioning, pumps and compressors.
Because of its flexibility, other uses for Limitamp equipment
have become common. Some of these uses are:
• Limitamp lineup consisting of a fused isolating switch ahead
of four NEMA Class E2 Limitamp controllers, the first three being
used as motor controllers and the last as a transformer feeder.
CR194 control is designed for operation on the following
power systems.
Table A.2
Maximum Motor Hp Â
Induction, Wound-rotor
Synchronous (1.0 PF)
Synchronous (0.8 PF)
CR194 400 Ampere stationary and drawout
1600 À
2000 À
2400
2800 À
3500 À
4200
3200 À
4800
4000
4800 À
6000 À
7200
CR194 800 Ampere stationary
3200 Á
4000 Á
2400
5600 Á
7000 Á
4200
6400 Á
8000 Á
4800
System Distribution
Voltage
À Based on 400 amperes RMS maximum, enclosed, NEMA 1, vented one-high
Á Based on 800 amperes RMS maximum, enclosed, NEMA 1, vented one-high
 For non-vented enclosures, apply a factor of 0.8 to the maximum horsepower
A1
A
GE Limitamp® Medium Voltage Motor Control
General
A
Comparison of Controller Types
Full Voltage Non-Reversing
The Limitamp control across-the-line (FVNR) controller is the
most popular type of controller. In general, high-voltage systems have fewer power restrictions than low-voltage systems;
therefore, full-voltage controllers may be applied to a greater
number of applications. Full-voltage controllers provide
lowest cost, simplicity, minimum maintenance and highest
starting torque.
Reduced Voltage
Primary reactor (closed-transition) Limitamp controllers (RVPR)
are the most popular of the reduced-voltage type starters
because they provide a simple, low-cost means of obtaining
reduced-voltage starts. The starting time is easily adjustable in
the field.
• Percentage full load amperage (FLA)
• Phase current
• KVAR
• KVA
• KW
• Ground fault current
• Thermal capacity to start
• Remaining thermal register
• Frequency
Reduced Inrush
Reduced voltage controllers provide a means of reducing
the starting inrush where the starting duty is not limited by
the controller. This type of controller can be used where
extremely long acceleration times are required.
Table A.3 Comparison of Starting Characteristics
Starter
Type
Limitamp closed-transition auto-transformer controllers (RVAT)
provide higher starting torque efficiency and a more favorable
power factor during starting than a primary reactor starter.
The transition time can be easily adjusted in the field. NEMA
medium-duty reactors and autotransformers with 50-, 65and 80-percent taps are provided as standard.
Limitamp solid state controllers (RVSS) are available for
applications requiring very tightly controlled motor torque
and acceleration times and where avoidance of sudden
switch-on of inrush current is desired. RVSS controllers offer
several advantages over FVNR controllers:
• RVSS reduces mechanical stress on driven equipment and
motor linkage while maximizing torque capability of the motor
• RVSS provides for special stopping requirements of motor/
pumps (soft stop/eliminating water hammer effect, etc.)
• RVSS minimizes voltage fluctuations on weak power distribution systems, reducing undervoltage supply to critical
loads or causing light flicker
• RVSS may reduce utility demand penalties
GE’s RVSS controllers can be programmed for a variety of
soft start/soft stop parameters; upon reaching normal run
conditions, the controller automatically transfers the load to
a fully rated NEMA bypass contactor. They also provide
state-of-the-art, built-in motor protection, including:
• Electronic overload
• Ground fault
• Phase loss, phase unbalance, and phase reversal
• Over/under current (including loss of load)
• Over/under voltage
• Optional RTD Input
Among the metering values provided by GE’s RVSS are:
A2
Full Voltage
Starting Characteristics Expressed in Percent Rated Value
Voltage Motor
Line
Torque
Torque
on Motor Current Current
Efficiency
100
100
100
100
100
RVSS (Solid State Starter with infinitely variable volts)
80 percent volts
80
80
80
64
80
65 percent volts
65
65
65
42
65
50 percent volts 50
“X” percent voltsÁ X
50
50
25
50
X
X
Y
X
64 À
64
100
42
100
25
100
Autotransformer (RVAT)
80 percent tap
80
80
65 percent tap
65
65
50 percent tap
50
50
25 À
42 À
Primary-Reactor (RVPR)
80 percent tap
80
80
80
64
80
65 percent tap
65
65
65
42
65
50 percent tap
50
50
50
25
50
À Autotransformer magnetizing current is not included in listed values.
Magnetizing current is usually less than 25 percent motor full-load current.
Á X = % of rated RVSS output volts, Y = (X/10)2
Transformer Feeders
Limitamp controllers are generally considered motor starting
equipment; however, they are not strictly limited to motors and
can provide very good protection for loads such as transformers.
Transformers that can be controlled by Limitamp controllers
must have a primary rated in the 2400- to 7200-volt range.
To adequately protect a transformer, it is necessary to define
specific protection requirements. The following areas will be
considered:
1. Transformer winding fault (primary and secondary)
2. Single-phasing, resulting in a phenomenon known as
“ferroresonance”
GE Limitamp® Medium Voltage Motor Control
General
3. Transformer overload
transformer protection from single-phasing due to blown fuses.
These functions are basic only and are not intended to be
comprehensive. Ground fault, differential, fault pressure,
undervoltage, etc., are often required and may also be added
to a given control. In addition, a transformer controller must
allow for transformer inrush current and not cause a nuisance
trip-out from a momentary line-voltage dip.
Transformer feeders typically are applied on critical process
applications where it is important to maintain continuity of
operation through a system voltage disturbance. Mechanically
latched contactors allow the contactor to remain closed during
a disturbance. Like circuit breakers, latched contactors are
opened either manually or by means of a shunt trip solenoid.
Transformers must be protected from primary and secondary
(winding or downstream) faults. In Limitamp controllers,
current-limiting fuses are applied to protect the transformer
from a primary winding fault, as well as faults in the conductors
from the controller to the transformer. The fuses are selected
to clear high-magnitude fault currents at the first fault half-cycle
and allow the contactor to energize a transformer without
operating on inrush currents. (Inrush currents occur when
transformer is energized, typically 8-12 times rated amperes
for 0.1 seconds). GE Type EJ-2 current-limiting fuses may be
applied when used with an overcurrent relay that is chosen
to coordinate with the EJ-2 fuse and protect the transformer
from damage as a result of a fault in its secondary circuit.
Capacitor Feeders
Protection
To determine a basis for protection, refer to ANSI transformer
short-circuit ratings, which define the magnitude and duration
of downstream faults that a transformer can withstand
without damage. A relay would have to be set to operate
before the damage point is reached. Base ratings, impedance
and the connection of the primary and secondary windings
of the transformer must be supplied in order to arrive at the
relay setting. The relay for this purpose can be an electronic
overload relay.
Transformer & Capacitor Feeders
Table A.4 is a listing of switching capacities for both transformer
and capacitor loads.
A common problem with single-phased transformers is a
phenomenon known as ferroresonance, which can occur
when an unloaded or lightly loaded transformer sustains an
open conductor in its primary circuit. Ferroresonance causes
system overvoltage as a result of the transformer core
inductance forming a “tuned” circuit with the system distributed
capacitance. To avoid ferroresonance, all three lines must be
switched simultaneously as with a medium-voltage contactor.
However, if one line fuse blows, then single-phasing will occur.
To prevent this, the medium-voltage contactor may be supplied
with a contactor tripping mechanism that operates from a
striker pin located in the fuse. When the fuse element burns
in two, the spring-loaded striker pin is released. It projects
upward and operates a contact that trips the contactor. This
feature, known as blown fuse trip, would provide positive
Limitamp 400 amp contactors are ideally suited for capacitor
switching applications. (Note: 800 Amp is not rated for
capacitor switching.)
Capacitors may be switched with the motor, but maximum
rating for this function must be determined by motor design.
When the capacitors are provided in Limitamp control, they
are normally mounted in an auxiliary enclosure beside the
Limitamp controller. A capacitor rated up to 200 KVAR can
be mounted in the top of a two-high CR194 enclosure with
the controller in the bottom.
Table A.4 CR194 Vacuum Switching Capacities (One-high)
8-hour Open
Rating (Amperes)
400
800
System
Voltage
2400
3-Phase
3-Phase
Transformers (kVA) Capacitors (kVAr)
1600
1200
4160
2800
2100
4800
3200
2400
7200
4800
3600
2400
3200
4160
5600
4800
6400
N/A
Future Starters
Future squirrel-cage, full-voltage non-reversing starters
can be installed in two-high construction only when factoryprepared space has been purchased with the original
Limitamp equipment.
A3
A
GE Limitamp® Medium Voltage Motor Control
General
A
Figure A.1 Medium Voltage Compartments in CR194 two-high design
Figure A.2 Medium Voltage Compartments in CR194 one-high design
The purchase of factory-prepared space provides a space
unit equipped with vertical power bus, complete interlocking
and isolating mechanisms, operating handle and high-voltage
door. It does not include electrical components.
Table A.5 Publication References for Limitamp Equipment
Publication
Description
CR194 Vacuum Design
GEH-6263
2-high Maintenance Instructions
GEH-5305
1-high Maintenance Instructions
GEH-5396
800 Amp 1-high Maintenance Instructions
GEF-8016
Contactor Renewal Parts
GEH-5306
Contactor Maintenance Instructions
Fuses and Overload Relay Curves
GES-5000
Power Fuse and Overload Relay Curves
General Purpose Controls
GEP-1260
Control Catalog
Pilot Devices
GEA-10877
CR104P Push Buttons and Pilot Lights
Relays and Timers
GEH-4115
CR120B AC Relays
GEH-4120
CR120B Latched Relays
When parts are purchased to fill a future starter, these consist
of a contactor, power fuses, control power transformer, CPT
fuses and fuse supports, current transformers, and low-voltage
panel and devices.
A4
GE Limitamp® Medium Voltage Motor Control
Controllers
CR194 Vacuum Stationary & Drawout
Features
• Easily removable contactor — The stationary or drawout
contactors can easily be withdrawn by removing easily
accessible bolts. Front access to the coil and tip wear
checks will substantially reduce the need to remove the
contactor in normal circumstances.
• 400 or 800 Ampere Contactor — Vacuum Limitamp control
meets the varying needs of industry including today’s
higher horsepower requirements.
• NEMA rated — Vacuum Limitamp control is fully rated and
designed to meet the requirements of NEMA ICS 3, Part 2
Class E2 controllers.
• UL rated — Vacuum Limitamp control is fully rated and
designed to meet the requirements of UL 347.
• Self-contained power bus — Vertical power bus is a standard
feature of Vacuum Limitamp control. Horizontal power bus
is available within the standard 90-inch height and lines
up with that of previous Limitamp designs. The power bus
ratings have capacity for extended lineups and larger
starter requirements.
• Installation ease — Provision for cable runs from the top
and bottom; easily accessible terminals and small overall
size make installation fast and easy.
• Proven reliability — Vacuum Limitamp control utilizes the
latest vacuum interrupter technology for long, reliable service.
• Simplified construction — The operating mechanisms
inside Vacuum Limitamp control have been simplified for
further improvements in reliability and ease of maintenance.
• Cooler operation — The reduced power losses of vacuum
interrupters, coupled with other design improvements,
provide a controller that is cooler operating to further
enhance service life.
• Quick-make quick-break non load-break disconnect —
Disconnection of the starter from the main bus is accompanied by a quick-make quick-break non load-break disconnect
switch. This switch improves the overall control integrity by
eliminating the need to rack out the contactor to isolate
the load from the power bus.
• Viewing window — The switch is equipped with a viewing
window for visual assurance that the disconnect contacts
are open, and a full barrier for personnel safety. When the
plunger on the handle is depressed, the CPT secondary is
(isolated) disconnected, which drops out the contactor coil.
Then, when the handle is thrown to the “off” position, the
CPT primary and the high voltage compartment are isolated
from line power.
• Dependable performance — Vacuum Limitamp control is
coordinated to provide the required motor protection functions and offer reliable overcurrent protection against the
damaging effects of overloads and short circuits.
Interrupting Ratings
The interrupting ratings of the controllers vary with the value
of the utilization voltage. The following table depicts typical
NEMA E1 (unfused) interrupting ratings for Class E1 controllers.
Table B.1 NEMA Class E1 Interrupting Ratings
Contactor Type and Rating
Interrupting Rating rms symmetrical (MVA)
2400 Volts 4200 Volts 5000 Volts 7200 Volts
CR193B Stationary 400 Amp
25
43
50
75
CR193D Drawout 400 Amp
25
43
50
75
CR193C Stationary 800 Amp
37
65
75
-
CR193E Drawout 800 Amp
37
65
75
-
In addition to normal motor protective relays, NEMA Class E1
Limitamp control must include instantaneous overcurrent
relays to signal the contactor to open on fault current. NEMA
Class E1 Limitamp control may be employed on systems
having available short-circuit currents up to the interrupting
rating of the contactor.
Relaying, metering, ground fault protection and lightning
arresters are typical of available modifications.
NEMA Class E2 Limitamp control incorporates the high-interrupting capacity of fast-acting fuses. These current-limiting
fuses protect both the connected equipment and control
against the high short-circuit current available from modern
power systems. (See Table B.2.)
Table B.2 NEMA Class E2 Interrupting Ratings
Contactor Type and Rating
Interrupting Rating rms symmetrical (MVA)
2400 Volts 4200 Volts 5000 Volts 7200 Volts
CR193B Stationary 400 Amp
200
350
400
600
CR193D Drawout 400 Amp
200
350
400
600
CR193C Stationary 800 Amp
200
350
400
—
CR193E Drawout 800 Amp
200
350
400
—
Vacuum Contactors
The vacuum contactors supplied with vacuum Limitamp are
of the magnetically held type. They are fully rated at 400 or
800 amperes in accordance with NEMA and UL standards. The
contactors differ in size, weight and method of termination.
The vacuum interrupters are also different among the various
models and are not interchangeable due to their different
current ratings, and variations in interlock and wire harness
mounting.
The contactor may be serviced in each of the designs available. This allows easy access for normal maintenance —
such as vacuum interrupter wear checks and replacement
of the operating coil — without removing the contactor. The
only time the contactor needs to be removed is to replace a
vacuum interrupter at the end of its service life.
B1
B
GE Limitamp® Medium Voltage Motor Control
Controllers
B
The standard contactors for industrial motor starters are
closed by a single magnet and are held closed by the same
magnet. This contributes to simplicity of mechanical design
and increases the mechanical life of the contactor. Standard
contactors may not need adjustment or mechanical repair
for many years, primarily due to mechanical simplicity and
sturdiness. However, preventive maintenance checks at least
once per year are recommended.
Low voltage on the contactor operating coil of an electrically
held contactor will cause the contactor to open. For most
motor applications, it is desirable to disconnect the motor
from the line when the system voltage is lost or lowered
appreciably; therefore, the electrically held contactor is
appropriate. The DC operating coil of the contactor is designed
to be used with a holding circuit to limit coil current. The
contactor coil is designed for use on 115 volts rectified AC or
125 volts DC.
For all NEMA Class E1 controllers, the contactor must be
capable of interrupting the available short-circuit current.
For these applications, instantaneous overcurrent relays
must be used to interrupt the contactor coil current. See
Table B.3 for additional technical specifications on the
vacuum contactor.
Table B.3 Vacuum Contactor Technical Specifications
Ratings
CR193B
CR193D
Rated voltage (Volts)
5000 7200
Rated current (Amperes)
400
Short circuit interrupting current (kA) symmetrical 6.0
6.0
75
Class E1 MVA
50
E2 MVA
2400 volts
200
3600 volts
300
4160 volts
350
4800 volts
400
7200 volts
600
Short-time current (amperes)
30 seconds
2400
1 second
6000
Impulse withstand (kV)
Dielectric strength 1 minute (kV)
(Power frequency dielectric test)
Vacuum integrity test (AC RMS)
Switching frequency (Operations/hour)
Mechanical life (Operations)
Electrical life (Operations)
Closing time (mS)
Opening time (mS)
(Switched on DC side of rectifier)
Pick-up voltage (% of rated)
Drop-out voltage (% of rated)
Control voltage (Volts)
Control circuit burden (VA)
Closing
Hold-in
Auxiliary contactsÀ
Ratings
Switching
Current (amperes)
Voltage (volts)
AC
DC
Contactor weight lb (kg)
Applicable standards
B2
CR193C
CR193E
5000
800
9.0
75
200
300
350
400
—
4800
12,000
60
13.25 18.2
60
13.25
20 kV
360
2 x 10 6
1 x 10 6
350
50
20 kV
360
1 x 10 6
0.25 x 10 6
270
55
85% min
85% min
10 - 65%
10 - 65%
115 rect. AC 115 rect. AC
175
30
550
110
20 maximum
(N.O. or N.C.)
10
600
6 amperes at
600 volts
1 ampere at
240 volts
77 (35)
UL 347
NEMA ICS 3,
Part 2
20 maximum
(N.O. or N.C.)
10
600
6 amperes at
600 volts
1 ampere at
240 volts
114 (52)
UL 347
NEMA ICS 3,
Part 2
GE Limitamp® Medium Voltage Motor Control
Controllers
À Limited to 10 in two-high starter.
Table B.4 Contactor Dimensions in (mm)
Key
A
B
C
D
E
F
G
H
CR193B
14.88 (378)
13.50 (343)
14.65 (372)
10.24 (260)
12.99 (330)
8.48 (215)
1.18 (30)
—
CR193D
14.88 (378)
13.50 (343)
14.65 (372)
10.24 (260)
12.99 (330)
8.46 (215)
1.18 (30)
1.93 (49)
CR193C
18.90 (480)
16.93 (450)
17.52 (445)
12.99 (330)
17.00 (432)
11.02 (280)
1.38 (35)
—
CR193E
18.90 (480)
16.93 (430)
17.52 (445)
12.99 (330)
17.00 (432)
11.02 (280)
1.38 (35)
1.50 (38)
B
Figure B.1 View from Interrupter Side
Figure B.3 400-Ampere Vacuum Contactor
Latched Contactors
There are some applications where it is not desirable to disconnect the motor from the line during voltage depression.
These applications are generally those associated with a
critical drive where the continued rotation of the drive may
be more important than possible damage to the motor from
low voltage.
CR193D
Drawout
Contactor Only
Mechanical Latch
Assembly
Figure B.2 Coil Side and Side Views
The mechanical latch maintains contactor closure under the
most severe undervoltage conditions, including complete loss
of voltage. Latched contactors may be specified if required
by the application. The standard close and trip coils are
designed for use on 120 volts rectified AC or 125 volts DC.
Trip coils are also available in 24V, 48V and 220V DC. A manual
release feature is provided as standard. Capacitor trip devices
can also be used for release on the trip coils.
The Limitamp latched contactors are identical to the unlatched
versions, with the exception of a small latch attachment
mounted on the contactor, which slightly increases the depth
of the contactor.
B3
GE Limitamp® Medium Voltage Motor Control
Controllers
B
Latched contactors are interchangeable mechanically with
the standard non-latched versions, both from latched to
non-latched, and vice versa. However, in each case, it is
necessary to change the wiring in the control circuit to the
contactor coil or coils and to change the enclosure door to
accommodate the manual latch release knob.
Application Notes — Vacuum Contactors
Switching Transients and Vacuum Contactors
Voltage transients when transmitted downstream can be
harmful to motor insulation systems. The transients occur in
most electrical systems and are usually due to switching
surges or lightning strikes. Vacuum contactor switching is only
one source of voltage transients. For these reasons GE recommends that customers install surge capacitors and arresters
at the motor terminals for vacuum as well as airbreak contactor
applications. The surge capacitors reduce the steepness of
the voltage transient wavefront, thus reducing the stress on
the motor insulation.
Vacuum contactors have proven their suitability as a reliable
and safe means of controlling motors, transformers, and
capacitor loads. This has been demonstrated by a very good
track record over a period of more than 20 years in vacuum
Limitamp equipment and much longer in GE Power-Vac
switchgear equipment.
Also, an independent Electric Power Research Institute (EPRI)
study, investigating the reliability of vacuum switching devices
a number of years ago, concluded “... motors switched by
vacuum devices had failure rates which are no higher than
those for motors switched by air or air-magnetic devices.”
Chopping Transients in Vacuum Limitamp
The vacuum switching device is among the best switching
device available because it most frequently interrupts load
currents in an “ideal” fashion — that is, when the load current
is at zero. However, there is a probability that some switching
operations may produce voltage transients due to chopping.
Chopping is a phenomenon that occasionally occurs as the
current through a contactor pole is interrupted during a
contactor opening operation.
To understand the nature of chopping, a little understanding
of what occurs as a vacuum contactor interrupts current is
necessary. When the operating coil of a vacuum contactor
is de-energized, kick-out springs in the contactor cause the
armature to open and force the vacuum interrupter tips to
part. Any current that is flowing through the tips at the instant
of parting continues to arc across the open tips. This arcing
continues until the sinusoidally varying current approaches
B4
zero. As the polarity reverses across the open tips, current
ceases to flow because all charge carriers in the arc disappear
during the zero-crossing, leaving in its place a very high
dielectric vacuum space. Chopping occurs just before the
current zero crossing because the arc becomes unstable
under the light current conditions and prematurely interrupts
the current. The instantaneous level of current change when
this interruption occurs is called the “chop” current. The
magnitude of the resulting voltage transients is the product
of the “chop current” and the load surge impedance.
GE employs special metallurgy in its tip design to minimize
chopping. The tip material consists of a sintered tungstencarbide material that is impregnated with silver. The tungsten
provides long life in hot arcing conditions, and the silver provides
for low chop currents. In chop current tests performed on GE’s
400 ampere vacuum contactors, it was found that the load surge
impedance had significant effect on the average chop current.
For example, tests with a surge impedance of 1000 ohms
yielded average chop currents of 1.2 amperes but only 0.28
amperes with 4500 ohms surge impedance. These levels of
chop currents cause little concern for motor insulation systems.
If motors are expected to be “jogged” or frequently switchedoff while accelerating up to speed, surge suppressing devices
discussed earlier should be seriously considered to minimize
the effects of long term motor winding insulation degradation
due to multiple re-ignition transients that can occur while
interrupting motor inrush currents. Multiple re-ignitions are
surges of arcing current across an opening vacuum interrupter tip that occur in the first few micro-seconds after the
tips part. Multiple re-ignitions are virtually non-existent while
interrupting normal motor running currents.
Vacuum Interrupter Integrity
The loss of interrupter integrity due to loss of vacuum is a
potential concern because the vacuum interrupter ceases to act
as an interrupter if vacuum is lost. Vacuum Limitamp interrupters
are tested three times during the manufacturing process for
vacuum integrity. Historically, this process has reliably
eliminated loss of vacuum during normal product operation.
To maintain integrity, annual hipot checks are recommended
as part of a user’s normal preventative maintenance practice.
The recommended hipot test voltage is 20 kV AC RMS for the
400 ampere and 800 ampere contactors. The hipot procedures
are described in equipment instructions GEH-5305 and
GEH-5396.
AC vs. DC Hipot
The AC hipot is recommended for vacuum interrupters because
DC hipot may indicate problems with a good interrupter. The
reason for this is complex, but in essence there may be
microscopic gap broaching “anomalies” across the open
GE Limitamp® Medium Voltage Motor Control
Controllers
interrupter tips that the DC hipot cannot distinguish from real
problems such as a loss of vacuum. AC hipot systems, on the
other hand are able to “burn-off” these anomalies, allowing
the good interrupter to recover (Normal contactor load currents
will also burn-off these anomalies).
B
If it is desired to use a DC hipot on a vacuum contactor, it is
important to recognize that the results may falsely indicate
a bad bottle. Also, DC voltage levels should not be greater
than 1.4 times the recommended AC RMS value in order to
maintain a safe margin of voltage to X-ray emission. At 35kV
small amounts of X-ray radiation may be emitted. The level
of emission is well below the allowable levels established in
ANSI 37.85-1972. Using DC hipot at 28 kV (1.4 x 20 kV AC
RMS) does maintain a safe margin to X-ray emission.
Construction
There are three basic constructions available utilizing the
vacuum contactor:
• CR194 two-high 400 Amp
• CR194 one-high 400 Amp
• CR194 one-high 800 Amp
CR194 Two-High 400 Amp
The two-high construction has basic dimensions of 36” wide,
90” high and 30” deep. An optional 40-inch-wide enclosure is
also available when additional cabling space is required.
Bolted rigid frame construction provides an accurate and
simple building platform, giving greater structural strength
and flexibility. Full top and bottom compartment isolation is
provided for greater safety, and the two-high construction is
UL/cUL approved.
A door-in-door construction provides roomy low-voltage
compartments, which offer flexibility, safety and high density.
A large low-voltage door mounting surface permits multiple
relays and metering packages, including drawout relays. The
interior of the low-voltage compartment features a white
mounting panel, which is easily accessible and provides ample
space for numerous control options.
Figure B.4 CR194 two-high construction
The enclosure will accommodate outgoing cable sizes as
shown in Table B.6 when both top and bottom compartments
house contactors. There is an option to use the top compartment as an incoming line section with limited cable sizes.
Refer to the factory for details. Otherwise, an auxiliary section
will be required.
It is not necessary to de-energize one controller to service or
install the second controller. The enclosure is designed to
safely permit termination of one set of motor leads while the
other controller is energized.
Main horizontal power bus is available in 1200, 2000 and 3000
amperes. Both the main and vertical bus may be insulated
and accessible from front and rear. The horizontal power
bus will match with existing Limitamp lineups, including
air-break units.
The current ratings are shown in Table B.5.
Table B.5 Ratings and Horsepower Limitations in CR194
Two-high Vacuum Control
Contactor
Location
Horsepower
Maximum
Current
2400 Volts
4200 Volts
7200 Volts
NonNonNonNonVented
Vented
Vented
Vented
Vented
Vented
Vented
Vented
Top
360
320
1600
1200
2800
2500
4500
4000
Bottom
400
320
1800
1200
3100
2500
4500
4000
B5
GE Limitamp® Medium Voltage Motor Control
Controllers
Table B.6 Cable Size Limits (approximate) in CR194 Vacuum Control
Construction
With Non-shielded Cable
B
With Shielded Cable and Prefabricated
Stress Cones
Per phase
With Shielded Cable and Hand- wrapped
Stress Relief
Per phase
Per phase
400-Ampere
Incoming
Load
Incoming
Load
Incoming
Load
One-high 26”-wide Case
1-500 kcmil
1-500 kcmil
1-500 kcmil
1-500 kcmil
1-500 kcmil
1-250 kcmil preferred
1-500 kcmil possible
One-high 34”-wide Case
2-500 kcmil
2-500 kcmil
2-500 kcmil
2-500 kcmil
2-500 kcmil
2-500 kcmil
One-high 36”-wide Case
2-500 kcmil
2-500 kcmil
2-500 kcmil
2-500 kcmil
2-500 kcmil
2-500 kcmil
Two-high 36”-wide Case
Contact Factory
1-500 kcmil
Contact Factory
1-250 kcmil preferred Contact Factory
1-500 kcmil possible
1-#3/0 preferred
1-#4/0 possible
Two-high 40”-wide Case
Contact Factory
1-500 kcmil
Contact Factory
1-500 kcmil
Contact Factory
1-250 kcmil
2-750 kcmil
2-750 kcmil
2-750 kcmil
2-750 kcmil
2-750 kcmil
2-750 kcmil
800-Ampere
One-high 48”-wide Case
CR194 One-High 400 Amp
The one-high packaging (one contactor per enclosure) for the
400-ampere vacuum contactor has basic dimensions of 26
inches wide, 90 inches high, and 30 inches deep, including
power bus. It is constructed from a welded enclosure to house
a single vacuum contactor in the high-voltage compartment
located at floor level. The entire upper compartment is available
for low-voltage equipment and includes a swing-out panel for
ease of component mounting and accessibility.
This enclosure will accommodate cable sizes as shown in
Table B.7. Cable runs may enter from top or bottom without
modification. Top or bottom cable entrance into the enclosure
does not need to be specified.
The one-high design will accommodate the following
combination of components:
1. One three-phase potential transformer used for metering.
2. Up to 10 kVA extra capacity CPT (34” wide only). 3 KVA max
on two-high design.
3. Up to approximately 10 control relays for induction
motor starters.
4. Two size S1 drawout relay cases.
A 34-inch-wide, one-high enclosure is available as an option,
where more cable room or multiple cable connections are
required. Power factor correction capacitors can also be
supplied and will be mounted in an auxiliary enclosure. A
36-inch-wide, one-high enclosure is also available as an
option where a drawout contactor is required. See Table B.7
for maximum cable sizes.
B6
CR194 One-High 800-Amp
The one-high enclosure for the 800-ampere vacuum contactor
has basic dimensions of 48” wide, 90” high and 30” deep in a
welded frame. Maximum cable sizes are shown in Table B.5.
Protected raceways isolate the motor and power leads from
one another. Cable runs may enter from the top or bottom
and are straight runs.
Weights and Dimensions
Vacuum Limitamp control varies in weight by controller type
and construction. The approximate weight for estimating
purposes is included in Table B.9.
Overall size of controllers vary according to type of controller
as shown in Table B.9.
Main horizontal power bus for electrically connecting sections
of Limitamp control does not add to the standard 90-inch
height.
GE Limitamp® Medium Voltage Motor Control
Controllers
Table B.7 Estimated Weights and Dimensions — CR194 Vacuum Controllers, NEMA 1 Vented Enclosure À
Controller TypeÁ
One High
(One Starter)Ä
Contactor
2400 Volts
Ampere
Rating Max HP Approx. Width in inchesÅ
3-Phase weight
(90 high x
50/60
in lbs.
30 deep)
Squirrel-Cage Induction
Full-Voltage
Nonreversing
Full-Voltage Reversing
Two-Step Part-Winding
Nonreversing
Two-Speed OneWinding FVNR
Two-Speed TwoWinding FVNR
Synchronous
Induction FVNR
Brush Type &
Brushless
Max HP
3-Phase
50/60
Approx. Width in inchesÅ
weight
(90 high x
in lbs.
30 deep)
1600
1200
26
2800
1200
26
4800
1200
34
3200
1600
1400
1500
48
58
5600
2800
1450
1500
48
58
—
—
—
1000
2800
58
1000
2800
58
400
1600
4800
98
2800
4800
98
400
1000
3000
58
1000
3000
58
400
1600
5000
66
2800
5000
98
800
3200
5200
112
5600
5200
112
400
1600
1400
58
2800
1400
58
400
1600
1600
68
2800
1600
68
400
1600
1400
58
2800
1600
58
1400
34
—
—
0.8
PF
1.0
PF
0.8
PF
1.0
PF
0.8
PF
400
1600 2000 1400
34
2500 3500
1400
34
800
3200 4000 2600
48
5600 7000
2600
48
1000
3000
68
1000
3000
68
400
1600
5000
90
2800
5000
90
Autotransformer
0.8
PF
1.0
PF
0.8
PF
B
Approx. Width in inchesÅ
weight
(90 high x
in lbs.
30 deep)
800
400
Synchronous Motor, RVNR
Primary Reactor
400
Induction/Synchronous
Motor, RVNR
Neutral Reactor
Max HP
3-Phase
50/60
400
Reduced-Voltage Nonreversing
Primary Reactor Type
400
Autotransformer Type
(Closed Transition)
7200 Volts
4000-4800 VoltsÃ
1.0
PF
4800 5500
—
—
0.8
PF
1.0
PF
1.0
PF
400
1000 1250 3200
76
1000 1250
3200
76
400
1600 2000 5200
108
2800 3500
5200
108
400
4800 5500
68
À See Enclosure & Bus Ratings Section E for NEMA 3R enclosures.
Á For wound-rotor motor starter consult factory.
 Derate by 0.8 for non-vented enclosures.
à Maximum horsepower at 4160 volts AC in one-high NEMA 1 enclosure.
Ä Two-high Starters are available in bolted-frame construction, available only for 400 ampere, squirrel-cage FVNR applications.
Dimensions are 36” wide x 90” high x 30” deep. Weight is 2000 lbs.
Å Dimensions shown are approximate, based on standard motor designs.
B7
GE Limitamp® Medium Voltage Motor Control
5kV Load-break Switches
Introduction
IC1074 load-break switches are manually operated threephase, single-throw disconnecting switches with an integral
interrupter and stored-energy spring that has the capability
of interrupting magnetizing and load current within the ratings
shown in Table C.1. They are designed and tested to comply
with the performance requirements of ANSI C37.57 and C37.58.
The IC1074 600-ampere drawout switch is designed for stab
connection at line and load terminals. This switch must be
fused. Current-limiting fuses are available up to a continuous
rating of 630 amperes for installation in the switch.
switch, fuses are available up to 960 amperes continuous.
These large fuses must be applied as line protectors for short
circuit only, relying upon branch circuits or backup overload
protection by other means.
Drawout switches must be applied as feeders only. The fixed
mounted switches may be used as incoming switches or
feeder switches.
These switches are designed specifically for use with Limitamp
control. They are available with 1000- or 2000-ampere AC
main power bus within the enclosure for easy lineup with
Limitamp starters. 3000-ampere is available with extra
depth.
Other features of these switches are:
• Viewing window to see condition and position of switch
blades.
• Blown-fuse indicator that can be seen through view window.
• Bolted fuses available for maximum reliability.
• High reliability interruption.
• Available with key-type interlocks. Maximum of three keys
per position (lock open or lock closed).
• Outside door interlocked directly to operating shaft to
prevent opening with switch energized.
• Externally operated handle that activates spring-charged
quick-make/quick-break mechanism.
• Easy inspection.
• High mechanical life.
• UL available in stationary switches only.
Figure C.1 1200-ampere stationary load-break switch
The switch is designed to accommodate the bolt-on version
of the current-limiting fuse, but clip mounting is available.
Construction may be either one- or two-high, with one-high
in a rollout design instead of drawout. Either two switches or
a combination switch and 5kV air-break starter can be
mounted in a two-high enclosure.
The IC1074 stationary switch (600- or 1200-ampere) is
designed for mounting in one-high construction only. It
contains line- and load-terminal pads for bolting incoming
and outgoing conductors directly to the switch. It may be
supplied fused or unfused. If supplied as an unfused switch,
an upstream circuit breaker with instantaneous trips must
be available to coordinate with switch capabilities — or the
switch must be supplied with key lock capabilities — for all
of the Limitamp starters in the lineup. For the 1200-ampere
C1
C
GE Limitamp® Medium Voltage Motor Control
5kV Load-break Switches
Table C.1 IC1074 Load-break Switch Technical Specifications
Type
600-Ampere Drawout Switch
(Fuse)
600-Ampere Stationary Switch 1200-Ampere Stationary Switch
(Fused or Unfused)
(Fused or Unfused)
4760 volts
4760 volts
4760 volts
N/A
N/A
600 amperes
540 amperes
1200 amperes
1020 amperes
600 amperes
540 amperes
600 amperes
540 amperes
960 amperes
840 amperes
600 amperes
600 amperes
1200 amperes
61,000 amperes
N/A
61,000 amperes
61,000 amperes
61,000 amperes
61,000 amperes
N/A
61,000 amperes
61,000 amperes
60 kV
60 kV
60 kV
200 MVA (sym)
400 MVA (sym)
200 MVA (sym)
400 MVA (sym)
Ratings
C
Maximum nominal rating
Unfused rating
Vented enclosure
Non-vented enclosure
Fused rating
Vented enclosure
Non-vented enclosure
Make/Break rating
Fault-closing rating (asym)
Fused
Unfused
Momentary rating (asym)
Unfused
Basic impulse level (BIL)
Short-circuit interrupting capacity (fused)
200 MVA (sym)
2400 volts
400 MVA (sym)
4800 volts
Dimensions
Dimensions in inches (W x H x D)
Dimensions in inches (W x H x D) Dimensions in inches (W x H x D)
One-high construction
34 x 90 x 30
38 x 90 x 30
38 x 90 x 30
One-high construction (option)
42 x 90 x 30
N/A
N/A
Two-high construction
44 x 90 x 30
N/A
N/A
Incoming 38”-wide case
N/A
2-500 kcmil per phase with or
without stress cones
2-500 kcmil per phase with or
without stress cones
Outgoing 38”-wide case
N/A
2-500 kcmil per phase with or
without stress cones
2-500 kcmil per phase with or
without stress cones
N/A
N/A
42”-wide case
2-750 kcmil per phase with or without stress cones N/A
N/A
44”-wide case
1-500 kcmil per phase with or without stress cones N/A
N/A
Outgoing
34”-wide case
42”-wide case
44”-wide case
1-500 kcmil per phase with stress cones
N/A
2-750 kcmil per phase with or without stress cones N/A
1-300 kcmil per phase with or without stress cones N/A
N/A
N/A
N/A
Cable space
Incoming (for bus only)
34”-wide case
C2
2-500 kcmil per phase without stress cones
1-500 kcmil per phase with stress cones
GE Limitamp® Medium Voltage Motor Control
Incoming Line
Cable-entrance Compartment
When incoming cable exceeds limits shown in the cable size
limits tables, an optional cable-entrance compartment is
required.
Transition Compartment
Limitamp control can be close-coupled to transformers and
switchgear by a transition compartment to make a continuous
lineup. The transition compartment is normally 22 inches
wide; however, this can vary. See Table D.1.
Bus Entrance Compartment
Bus entrance compartments are required in all cases where
power is fed to the controller lineup by means of bus. See
Table D.1.
Cable Terminals
Terminal lugs for both line and load cables are not
supplied unless specified.
Mechanical compression lugs or NEMA 2-hole compressiontype lugs can be supplied as options.
The customer must specify the number and size cable when
lugs are to be supplied by GE.
Where aluminum cable is to be used, special attention must
be given to terminal selection.
High-Resistance Grounding Equipment
High-resistance grounding equipment can be mounted in an
enclosure which will match and line up with Limitamp
dimensions and bus location.
Table D.1 General Guidelines for Incoming Lines
Incoming Line
Cable Compartment Top Entry
Maximum Cable Size per Phase
Enclosure Width
Typical Device Devices That Can Be Included
4-500 kcmil
22”
VM, VMS, 2 stationary PTs, lightning arresters and
surge capacitors
4-750 kcmil
32”
All of the above plus 3 CTs, AM and AMS
4-750 kcmil
38”
All of the above plus D/O PTs can replace the
stationary PTs. 1 D/O CPT can be mounted.
Cable Compartment Bottom Entry
Same as top entry except a D/O CPT
cannot be mounted in the enclosure
Bus Entrance Compartment
N/A
32”
Same as 32”-wide cable compartment
Transition to GE Switchgear
N/A
22”
VM, VMS, 2 stationary PTs, lightning arresters and
surge capacitors
Transition to GE Transformer
N/A
22”
Accessories cannot be mounted in transformer
transition. Additional auziliary enclosure is required.
38”
AM, AMS, 3 CTs, 2 stationary PTs, VM and VMS
38” and 22”
auxiliary enclosure
Same as 38” switch plus lightning arresters, surge
capacitors and switchgear relay can be mounted in
the 22” wide enclosure
38” and 38”
auxiliary enclosure
Same as 38” switch except D/O PTs can be mounted
in the auxiliary enclosure plus switchgear relays
Load-break Switch
Fused or Unfused
2-500 kcmil top or bottom
D1
D
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosures
NEMA Type 1 — General Purpose
The NEMA Type 1 is the standard Limitamp enclosure
designed primarily to prevent accidental contact with control
apparatus. This enclosure is suitable for general purpose indoor
applications with normal atmospheres. For CR194 two-high
design with vented enclosures, add 2 1/2" to the height.
NEMA Type 1A — Gasketed
The NEMA Type 1A rubber-gasketed enclosure is a dustresistant enclosure (not dust-tight), designed to give protection
against dust, and when control devices are properly selected, to
give proper operation in a dusty atmosphere. It is recommended
for all moderately dusty atmospheres, especially in those
industries whose dusts are abrasive, conductive, or form highresistance contacts. NEMA Type 1A rubber-gasketed enclosures
are not provided with steel bottoms. It is expected that the case
will sit on concrete, effectively sealing the bottom against dust.
NEMA Type 2 — Driptight
This enclosure is made to protect control apparatus against
falling moisture or dirt. All openings are rubber-gasketed
and provided with doors or covers. It is intended for use in
atmospheres where condensation is heavy or where quantities
of water are used in a process or for cleaning. (For applications
where a hose is to be directed on the equipment from any
direction except above, use NEMA Type 4.) Normal instruments,
meters and devices are mounted on the door as in NEMA
Type 1. Strip heaters are used only as the application
requires them.
Standard construction is suitable for wind velocities of 130
mph and roof loading up to 30 pounds per square foot.
Exterior finish is applied by an electro-static powder coat
process (polyester based).
E
NEMA Type 12 — Dusttight
These cases are designed to meet the requirements of
industrial locations where protection is required against
entrance of fibers and flying lint, dust, dirt, light splashings,
seepage dripping and external condensation of noncorrosive liquids.
Typical requirements for NEMA 12 are:
• A gasketed cover that is hinged to swing horizontally, and
held in place with screws, bolts or other suitable fasteners.
• No open holes through the enclosure. All openings are
sealed with gasketed cover plates.
• No conduit knockouts or knockout openings.
• Steel bottom.
Indoor Enclosure Construction
Limitamp indoor enclosures are manufactured from 12-gauge
steel throughout, except for 13-gauge on the rear covers.
For surface preparation, see the Application Data section.
Choice Of Mounting — Indoor
You may select either back-to-back (60 inches deep) or
back-to-wall (30-inches deep) mounting, letting you arrange
control lineups to your own floor space and application
requirements.rewrite to accommodate 3000A
NEMA Type 3R — Weather-Resistant
These enclosures must be suitable for outdoor installation
and offer protection against driving rain and snow storms,
as well as against dust. Limitamp NEMA 3R enclosures are
provided with solid-steel bottoms and tops, an overhanging
sloping roof and strip heaters, with provisions for future
extension.
The following types of NEMA 3R enclosures are available:
• NEMA Type 3R, weather-resistant, full-height cover door,
non-walk-in (42 inches deep by 101 inches high). (Use
when a number of devices are on the door.)
• NEMA Type 3R, weather-resistant walk-in (92 inches deep
by 111 1/4 inches high).
Back-to-back mounting
Walk-in enclosures allow ample space for inspection and
maintenance of starters within the enclosure.
Back-to-wall mounting
E1
GE Limitamp® Medium Voltage Motor Control
Enclosures
E
Table E.1 Enclosure dimensions
Type
Description
Page
CR194 400A, 2 high, 36" wide (stationary or draw-out)
E4
NEMA 1 motor CR194 400A, 2 high, 40" wide (stationary or draw-out)
starters bolted
CR194 400A, 1 high, 36" wide (stationary or draw-out)
construction
CR194 400A, 1 high, 40" wide (stationary or draw-out)
E5
NEMA 1 motor CR194 400A, 1 high, 26" wide
starters welded CR194 400A, 1 high, 34" wide
construction
CR194 800A, 1 high, 48" wide
E8
E6
E7
E9
E10
CR194 400A, 1 high, 36" wide non-walk-in (stationary or draw-out) E11
NEMA 3R motor CR194 400A, 1 high, 40" wide non-walk-in (stationary or draw-out) E12
starters bolted
CR194 400A, 1 high, 36" wide walk-in (stationary or draw-out)
E13
construction
CR194 400A, 1 high, 40" wide walk-in (stationary or draw-out)
E14
CR194 400A, 1 high, 34" wide & CR194 800A, 1 high, 48" wide
NEMA 3R motor non-walk-in
starters welded
CR194 400A, 1 high, 26" & 34" wide walk-in
construction
CR194 800A, 1 high, 48" wide walk-in (stationary or draw-out)
NEMA 1 IC1074
1200A & 600A, 1 high, 38" wide
bolted load
break switch
NEMA 3R IC1074 600A, 2 high, 44" wide non-walk-in
draw-out load
600A, 2 high, 44" wide walk-in
break switch
E15
E16
cable can be terminated at one or more points in the lineup
and the power bus employed to distribute power throughout
the length of the group.
This bus is available in ratings of 1200, 2000 and 3000 (footnote) amperes and may be tin-plated copper, silver-plated
copper or bare copper. NEMA 1 is available up to 3600A. For
higher ratings refer to factory. Derating is necessary in certain
applications. The 1200/2000A horizontal bus compartment
is located within the standard 90-inch-high enclosure in the
same position as in current and previous air-break designs,
dating back to 1960, making all compatible. Limitamp horizontal bus is rated 60kV basic impulse level (1.2 x 50? sec
wave). Mechanical strength under short-circuit currents is 50
kA RMS symmetrical.
E17
E18
E19
E20
Nameplates
Enclosure nameplates are provided for identification on front
panels and internally for identifying units and devices.
Standard unit nameplates are 1" x 3" 2-ply thermoplastic,
black letters on white background or white letters on black
background.
Front panel device nameplates are 1/2" x 1 1/2" thermoplastic.
Internal device nameplates are fabric type with adhesive
backing. Update. Optional Thermoplastic nameplates are
available as an option
Thermoplastic nameplates are available with optional corrosion-resistant steel screws.
Ground Bus
Ground bus in a Limitamp lineup provides a low-resistance
path between ground connection points in any group of
controllers. This low-resistance path is a bus bar and is for the
purpose of decreasing to a low value a possibly hazardous
voltage difference between grounding points in the starter
group. These voltage differences would occur under ground
fault conditions if a low-resistance ground path were not
provided.
The ground bus is normally located near the AC power bus on
the inside rear of the enclosure. The bus provides a common
termination point for all ground connections within each
controller, including the enclosing case, and offers a convenient
terminal for incoming ground cables. It should be noted that
the customer must make a suitable ground connection to
the bus in order to make it effective. When ground bus is not
provided, the ground connection may be made to the ground
stud provided.
Extensions to the ground bus are located in the incoming
line cable compartment and near the load termination
points in the high-voltage compartment to make grounding
cable shield terminations easy to accomplish.
Table E.2 Enclosure features
Description
Strip heater
Thermostat
Receptacle
Incandescent light
Door stops
Floor sills
NEMA 3R Non-walk-in
42” deep
Standard1
Standard
Option
Option
Standard
Standard
NEMA 3R Walk-in
92” deep
Standard2
Standard
Standard
Standard
Option
Standard
1 In starter only
2 One in starter, one in aisle
Limitamp Bus Systems
AC power bus is used for conducting power throughout a
group of starters joined together in a lineup. Incoming power
E2
Control Bus
Control (wired) bus is a convenient means of conducting
control power throughout a group of controllers joined
together in a lineup. Conductors from a single control power
source may be terminated in one unit in the lineup and the
control bus employed to distribute the power to each unit of
the grouped lineup. Control bus may also be used to distribute the power from a single control transformer located in
the lineup.
Control bus normally consists of properly sized insulated
wire conductors run between terminal boards.
Standard voltage for control bus is 120 or 240 volts AC and
GE Limitamp® Medium Voltage Motor Control
Enclosures
maximum current rating is determined by application, such
as total present and anticipated future load.
E
Potential Bus
Potential (wired) bus is a means of distributing a common
source of low voltage throughout the lineup for metering
and instrumentation. Potential bus consists of properly sized
wire connected between terminal boards typically mounted
on the top inside of enclosure. Maximum voltage is 600 volts.
Communication Bus
Communication (wired) bus is a means —-finish edit.
Insulated Power Bus
Insulating the AC power bus reduces the possibility of bus
faults from causes such as surge voltages, ionized vapors,
falling objects (tools, etc.), ground tapes, etc. It also prevents
corrosion and oxidation of the bus and its hardware.
The standard power bus consists of bare conductors on
insulator supports. Insulation for the conductors can be provided, and it may consist of various types of insulating
material, such as 130°C HV rubber splicing tape or other
material dictated by availability and individual job requirements.
The CR194 two-high Vacuum Equipment design uses epoxyinsulated 2000A max main and vertical bus as standard.
Table E.3 Bus cross section
Bus type
Main bus
Vertical bus
Ground bus
Rating
1200A
2000A
3000A
400A
800A
400A
600A
Cross section
1/4" x 3" copper
(2) 1/4" x 3" copper
(2)1/26??
1/4" x 1" copper
1/4" x 3" copper
1/8" x 2" copper
1/4" x 2" copper
E3
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
CR194 400A, 2 high, 36" wide (stationary or draw-out)
6.0
2.3
LOWER UNIT
6
M
UPPER UNIT
17.4
6
M
2.5
2.3
N
FRONT
6.8
4.0
4.0
TOP VIEW
*
2.3
C
D
E
*
*
6.5
11.7
T1
C
4.5
T3
E
5.9
B1
*
T1-T3
D
5.4
T2
L1
T2
6.5
L2
7.3
10.6
14.0
*
6.5
F
L3
31.3
F
*
D
*
11.7
52
T2
*
7.3
10.6
LOWER
UNIT
C
4.5
T3
6.5
90
43
10.0
T1
68.8
UPPER
UNIT
*
FRONT
E
T1-T3
51.0
C
42.0
*
D
5.4
G H
36
T2
18.9
21.2
2-HI
30
36
L.H. SIDE VIEW
FRONT VIEW
- 2000 lbs.
909 kg.
6.0
2.3
UPPER UNIT
Notes:
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E4
6
M
6
M
17.4
LOWER UNIT
2.5
6.1
J
3.0
(TYP)
N
9.7
4.0
FRONT
4.0
FLOOR PLAN
3.0
(TYP)
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
E
CR194 400A, 2 high, 40" wide (stationary or draw-out)
10.0
2.3
LOWER UNIT
M
6
UPPER UNIT
17.4
M
6
2.5
2.3
N
FRONT
6.8
10.0
2.3
*
2.3
C
6.5
11.7
E
5.9
T1
B1
L1
C
4.5
*
D
TOP VIEW
T3
E
*
*
T1-T3
D
5.4
T2
T2
6.5
L2
7.3
10.6
*
F
6.5
14.0
L3
*
D
*
10.0
F
43
C
4.5
T1
68.8
T3
6.5
11.7
T2
52
*
FRONT
31.3
UPPER
UNIT
C
42.0
UNIT
*
T1-T3
51.0
90
* LOWER
D
5.4
G H
T2
7.3
10.6
40
21.2
18.9
2-HI
30
40
L.H. SIDE VIEW
FRONT VIEW
- 2000 lbs.
909 kg.
10.0
2.7
UPPER UNIT
Notes:
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
17.4
6
M
6
M
LOWER UNIT
2.5
6.1
J
3.0
(TYP)
N
9.7
FRONT
10.0
3.0
(TYP)
2.7
FLOOR PLAN
E5
GE Limitamp® Medium Voltage Motor Control
Enclosures
E
Enclosure Outline Dimensions 2400-4160 Volts
CR194 400A, 1 high, 36" wide (stationary or draw-out)
6.0
2.3
6
17.4
P
6
2.5
M
2.3
N
FRONT
6.8
TOP VIEW
C
*
5
*
C
5
4.5
E
5.9
*
B1
B
*
L1
B
6.5
29
L1
4.2
L2
L2
6.5
L3
L3
90
*
D
7
T1
T1
68.8
9.25
8
5.4
T2
T2
52
*
D
9.25
9
T3
18.8
T3
G H
36
1-HI
36
30
FRONT VIEW
L.H. SIDE VIEW
- 1500 lbs.
682 kg.
6.0
2.7
Notes:
B — Incoming Power Terminal Connection
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (If Ordered)
G — Space Required to Open Doors 90°
H — Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E6
6
P
6
M
2.5
6.1
17.4
J
3.0 (TYP)
N
9.7
FRONT
3.0
(TYP)
FLOOR PLAN
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
E
CR194 400A, 1 high, 40" wide (stationary or draw-out)
10.0
2.3
UPPER UNIT
6
P
LOWER UNIT
17.4
6
2.5
M
2.3
N
FRONT
6.8
TOP VIEW
*
5
C
*
C
5
4.5
E
L1
L2
5.9
*
B1
*
6.5
B
29
L1
B
4.2
6.5
L3
L2
L3
90
*
D
7
T1
T1
68.8
9.25
8
5.4
T2
T2
52
9.25
*
D
9
T3
18.8
T3
G H
40
1-HI
40
FRONT VIEW
30
L.H. SIDE VIEW
- 1800 lbs.
818 kg.
10.0
Notes:
B — Incoming Power Terminal Connection
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (If Ordered)
G — Space Required to Open Doors 90°
H — Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
2.7
P
6
6
17.4
M
2.5
6.1 J
3.0 (TYP)
N
9.7
FRONT
3.0
(TYP)
FLOOR PLAN
E7
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
CR194 400A, 1 high, 26" wide
K
5-1/4
1-1/4
2
4-1/2
P
27-3/8
3-1/2
18-3/4
4-3/4
C
M
N
5-5/8
1-3/8
FRONT
TOP VIEW
*
3-1/2
5
C
*
*
*
E
E
B1
5-5/8
*
B
L1
34
L1
6-1/2
*
L2
6-1/2
L2
B
L3
L3
4-1/4
5
7FT 6
6
68-13/16
*
D
*
FRONT
E
T1 D
9-1/2
9-1/2
9-1/2
9-1/2
T2
52
*
1/2
7-3/16
F
T3
9-1/8
18-1/4
14-1/2
17
VACUUM 1-HI
25
26
30
L.H. SIDE VIEW
- 1000 lbs.
455 kg.
G
FRONT VIEW
1-1/2
23
Notes:
B1 — AC Power Bus (if ordered)
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
1-1/2
1-1/2
J
P
K
2-3/16
5-1/2
2
E8
*
F
1/2
2-11/16
9
M
K
25-5/8
15
1
1
N
FRONT
6-1/2
3-1/2
FLOOR PLAN
2-3/16
30
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
E
CR194 400A, 1 high, 34" wide
K
5-1/4
1-1/4
2
4-1/2
P
27-3/8
3-1/2
18-3/4
4-3/4
C
M
N
5-5/8
FRONT 1-3/8
TOP VIEW
*
3-1/2
5
*
C
*
*
E
E
B1
5-5/8
*
B
L1
34
L1
6-1/2
*
L2
6-1/2
L2
B
L3
L3
4-1/4
5
7FT 6
6
*
D
FRONT
68-13/16
*
T1 D
9-1/2
9-1/2
9-1/2
9-1/2
T2
52
*
1/2
7-3/16
F
T3
9-1/8
*
F
18-1/4
14-1/2
1/2
2-11/16
17
33
VACUUM 1-HI
34
30
L.H. SIDE VIEW
- 1000 lbs.
455 kg.
G
FRONT VIEW
31
1-1/2
2
P
K
9
M
1
25-5/8
30
15
1
K
2-3/16
13-1/2
J
Notes:
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
1-1/2
1-1/2
N
14-1/2
3-1/2
FRONT
2-3/16
FLOOR PLAN
E9
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
CR194 800A, 1 high, 48" wide
13-3/8
1-3/16
2
13-3/8
P
K
M
4-13/16
5-3/8
N
4
9
1-3/16
TOP VIEW
FRONT
C
C
4-3/16
E
3-1/2
11
5-5/8
B1
X
B
6-1/2
*
L2
9-1/2
6-1/2
T3
17
26
7FT 6
15
T2
D
6
D
T1
F
21
L3
74
68 4/5
10-1/2
L2
4-3/16
11-1/2
T2
L1
B
X
L3
52
22
4-1/8
8-3/16
E
*
L1
FRONT
E
T1,T3
F
G
6
48
27-3/4
9
16-3/4
48
FRONT VIEW
30
L.H.SIDE VIEW
- 1500 lbs.
682 kg.
1-5/8
9-3/16
2-3/16
4-5/16
30
E10
P
P
6-5/8
N
M
25-5/8
K
Notes:
B1 — AC Power Bus (if ordered)
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
2-3/8
1-1/2
2-3/16
1-1/2
14-1/2
M
1
2 /8
4-3/8
FRONT
12-5/8
45
FLOOR PLAN
2 14
K
3
1-5/16
J
1-1/2
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
E
CR194 400A, 1 high, 36" wide non-walk-in (stationary or draw-out)
W
5
C*
C
5
E 5.9
L1
L2
L3
B1
*
6.5
B
29
E
FRONT
OF
NEMA 3
L3
*
D
52
*
L1
4.2
L2
B
6.5
68.8
*
4.5
T1
9.25
T2
9.25
T3
18.8
90
7
T1
8
D
6.5
FRONT
OF
INSIDE
ENCL
6.5
102.75
APPROX
*
B1
*
5.4
T2
9
52
T3
GH
36
1.75
1-HI
36
FRONT VIEW
30
L.H. SIDE VIEW
- 1875 lbs.
852 kg.
3.0 (TYP)
6.0
3.0 (TYP)
2.7
6
6
.75
11.5
.13
4
21.63
42
R.H. SIDE VIEW
4
P
2.5
M
17.4
6.1 J
30
42
N
CL
9.7
2.5
12
FRONT
FLOOR PLAN
Notes:
B — Incoming Power Terminal Connection
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (If Ordered)
G — Space Required to Open Doors 90°
H — Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E11
GE Limitamp® Medium Voltage Motor Control
Enclosures
E
Enclosure Outline Dimensions 2400-4160 Volts
CR194 400A, 1 high, 40" wide non-walk-in (stationary or draw-out)
W
*
5
C
C
5
4.5
E 5.9
L1
L2
L3
B1
*
6.5
B
*
29
L1
4.2
L2
B
6.5
6.5
7
T1
T1
9.25
T2
9.25
T3
18.8
8
6.5
102.75
APPROX
* B1
D*
5.4
T2
9
52
T3
G H
40
1-HI
40
FRONT VIEW
30
L.H. SIDE VIEW
- 2200 lbs.
1000 kg.
6
6
P
M
2.5
17.4
1.75
.75
11.5
3.0 (TYP)
3.0 (TYP)
10.0
2.7
30
6.1 J
42
N
9.7
CL
2.5
FRONT
FLOOR PLAN
Notes:
B — Incoming Power Terminal Connection
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (If Ordered)
G — Space Required to Open Doors 90°
H — Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E12
FRONT FRONT
OF
OF
NEMA 3 INSIDE
ENCL
90
*
52
E
L3
D
68.8
*
12
.13
4
21.63
42
R.H. SIDE VIEW
4
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
E
CR194 400A, 1 high, 36" wide walk-in (stationary or draw-out)
W
4
C
*
5
C
5
E 5.9
*
B
*
D
52
2
B*
B1
L1
6.5
L2
6.5
L3
68.8
*
4.5
T1
9.25
T2
9.25
T3
18.8
4.2
L1
L2
L3
2
29
111.3
90
7
T1
D
5.4
T2
8
9
101.3
T3
G H
36
1-HI
36
FRONT VIEW
6.0
30
L.H. SIDE VIEW
- 2700 lbs.
1227 kg.
90
*
6
2.19
2.7
6
6
6.38
2
37
P
M
2.5
17.4
6.1 J
30
3.0 (TYP)
2
31
31
2
25.63
30
2
2.19
92
R.H. SIDE VIEW
SPACE REQ'D TO OPEN DOORS 90 DEGREES
N
9.7
3.0
(TYP)
92
CL
2.5
FRONT
FLOOR PLAN
Notes:
B — Incoming Power Terminal Connection
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (If Ordered)
G — Space Required to Open Doors 90°
H — Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E13
GE Limitamp® Medium Voltage Motor Control
Enclosures
E
Enclosure Outline Dimensions 2400-4160 Volts
CR194 400A, 1 high, 40" wide walk-in (stationary or draw-out)
W
4
5
C*
*
C
5
4.5
E 5.9
B1
*
L1
6.5
L2
6.5
L3
B
*
D
68.8
52
T1
9.25
T2
9.25
T3
18.8
4.2
L1
L2
L3
101.3
90
T1 *
D
5.4
T2
8
9
T3
G H
40
1-HI
40
FRONT VIEW
10.0
30
L.H. SIDE VIEW
- 3300 lbs.
1500 kg.
6
2
2.19
2.7
17.4
6
6
37
P
M
2.5
3.0
6.1 J (TYP)
N
9.7
3.0
(TYP)
C
L
2.5
FRONT
FLOOR PLAN
Notes:
B — Incoming Power Terminal Connection
B1 — AC Power Bus
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (If Ordered)
G — Space Required to Open Doors 90°
H — Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E14
111.3
90
7
2
2
B* 29
30
92
2
31
31
2
25.63
30
6.38
2
2.19
92
R.H. SIDE VIEW
SPACE REQ'D TO OPEN DOORS 90 DEGREES
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
E
CR194 400A, 1 high, 34" wide & CR194 800A, 1 high, 48" wide non-walk-in
V42D800A
42DSIDE
C
W
4-1/8
8-3/16
4-3/16
C
11
E
L1
E
6-1/2
B
L2
FRONT
OF
INSIDE
ENCL
21
5-1/2
E
L3
6.5
*
4-3/16
10-1/2
6
T1
52
15
74
D
52
7FT 6
11-1/2
T2
102.75
APPROX
B1
T2
FRONT
FRONT
OF
NEMA 3
B
6-1/2
6.5
22
3-1/2
5-5/8
D
T1,T3
T3
6
G
17
26
48
48
FRONT VIEW
30
1.75
L.H.SIDE VIEW
.75
11.5
.13
4
9-3/8
- 1500 lbs.
682 kg.
4
21.63
2-3/16
2-7/16
1-7/16
42
30 25-5/8
P 6-9/16
P
4-1/4
R.H. SIDE VIEW
N
M
K
1
2 /8
14-1/2
42
M
1-3/4
2 14
K
3
1-5/16
4-3/8
CL
12
2-3/16
2-1/2
J
FRONT
12-9/16
45
1-1/2
C
*
3-1/2
5
*
1-1/2
FLOOR PLAN
V42D34W
C
E
*
*
E
B1
5-5/8
*
B
L1
34
L1
6-1/2
L2
*
6-1/2
L2
B
L3
4 1/4
L3
4-1/4
7FT 6
6
68-13/16
*
1/2
*
F
7-3/16
FRONT
D
52
9-1/2
9-1/2
9-1/2
9-1/2
*
D
T1
T2
T3
*
9-1/8
18-1/4
14-1/2
17
33
30
L.H. SIDE VIEW
Notes:
B1 — AC Power Bus (if ordered)
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
W — Lifting Angle
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
F
1/2
2-11/16
VACUUM 1-HI
34
G
FRONT VIEW
1-1/2
- 1300 lbs.
591 kg.
31
4-1/4
3
1-1/2
2-3/16
12
J
5 1/2
P
K
K
12 4 1
/4
N
13 1/2
30
25-5/8
M
1-1/2
C
L
4
FRONT
42
2-3/16
9-1/2
12
2-1/2
FLOOR PLAN
E15
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
CR194 400A, 1 high, 26" & 34" wide walk-in
C
*
C
3-1/2
5
*
C
E
E
*
6-1/2
B
L3
L2
L2
L3
*
F
7FT 6
9-1/2
7-3/16
68-13/16
*
*
52
1/2
*
18-1/4
17
33
30
G
L.H. SIDE VIEW
9-1/2
9-1/2
T2
*
18-1/4
14-1/2
17
25
30
F
1/2
2-11/16
VACUUM 1-HI
26
G
L.H. SIDE VIEW
FRONT VIEW
FRONT VIEW
- 1300 lbs.
591 kg.
J
- 1300 lbs.
591 kg.
9-1/2
9-1/8
F
1/2
2-11/16
VACUUM 1-HI
34
9-1/8
9-1/2
7FT 6
*
D
T1
T3
T3
*
14-1/2
L2
B
L3
5
6
7-3/16
F
T2
9-1/2
D
D
T1
9-1/2
L1
*
4-1/4
6
9-1/2
34
6-1/2
L3
5
4-1/4
1/2
B
6-1/2
L1
6-1/2
D
*
L1
34
L2
*
B1
FRONT
*
B
*
C
*
5-5/8
B1
5-5/8
52
3-1/2
E
*
L1
68-13/16
*
5
*
*
E
FRONT
E
2-1/4
3
7-1/2
P
1-1/2
13 1/2
P
51/2
1-1/2
4-1/4
M
4 1/4
M
30
K
30
12
N
12
N
2-3/16
3
K
K
7-1/2
J
4
2-1/4
2-3/16
12
K
4
4
C
L
CL
7FT 8
7FT 8
V
4
4
V
9 3/16
9 3/16
FRONT
FRONT
FLOOR PLAN
2-3/16
2-3/16
FLOOR PLAN
W
SIDE
4
2
2
Notes:
B1 — AC Power Bus (if ordered)
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
Q — Recommended Position for Incoming Feeder Conduit
W — Lifting Angle
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E16
111.3
101.3
90
6
6.38
2
2
2
2
31
31
25.63
2.19
2.19
30
37
92
R.H. SIDE VIEW
SPACE REQ'D TO OPEN DOORS 90 DEGREES
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
E
CR194 800A, 1 high, 48" wide walk-in (stationary or draw-out)
1 HI-800A-48W
C
C
4-3/16
3-1/2
11
5-5/8
22
4-1/8
8-3/16
L1
6-1/2
L2
6-1/2
L3
E
B
B
5-1/2
T2
52
11-1/2
4-3/16
17
7FT 6
15
74
T2
D
10-1/2 D
6
T1 T3
26
21
E
T1,T3
6
G
48
48
FRONT VIEW
30
L.H.SIDE VIEW
W
- 1500 lbs.
682 kg.
4-5/16
30
SIDE
2-3/16
J
4-3/4
4
P
M
M
N
K
14-1/2 21/8
2
2
3
1-5/16
2
12-5/8
CL
92
111.3
101.3
FRONT
90
2-3/16
FLOOR PLAN
6
6.38
2
2.19
37
2
31
31
2
25.63
30
92
R.H. SIDE VIEW
SPACE REQ'D TO OPEN DOORS 90 DEGREES
2
2.19
Notes:
B1 — AC Power Bus (if ordered)
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
Q — Recommended Position for Incoming Feeder Conduit
W — Lifting Angle
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E17
GE Limitamp® Medium Voltage Motor Control
Enclosures
E
Enclosure Outline Dimensions 2400-4160 Volts
1200A & 600A, 1 high, 38" wide
K
P/Q
10
P/Q
9
1.5
6
FRONT
TOP VIEW
13.4
7.7
U
7.5
*
*
C
4
3.7
A
B
7.5
7.9
U
4 C
A
B
7
F
E
L1
F
6.5
BOLTED
SWITCH
L2
6.5
BOLTED
SWITCH
L3
5.9
90
B1
79.5
79.5
FUSES
IF USED
68.8
52
*
T
7.5
G H
4
7.5
7.9
4
7.5
4 (TYP)
18.4
30
SIDE VIEW
38
7.5
*
38
FRONT VIEW
T
- 1000 lbs.
455 kg.
Notes:
B1 — AC Power Bus (if ordered)
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
Q — Recommended Position for Incoming Feeder Conduit
W — Lifting Angle
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E18
J
K
2.5
30
C
L
P/Q
P/Q
10
2.5
9
1.5
FRONT
FLOOR PLAN
6
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
600A, 2 high, 44" wide non-walk-in
E
42DLBS
*
C
2-1/8
E
*
C
6
5-5/8
*
L1
L2
E
1
2 /2
B1
6-1/2
4-1/2
UPPER
UNIT
*
1
1
6 /2 6 /2
B1
*
T
*
T
6-1/2
UPPER
UNIT
L3
6-1/2
FRONT
1
2 /2
LOWER
UNIT
52
DRAW OUT
SWITCH
4-1/4
*
T LOWER
T
UNIT
8
23
4-1/2
50
3
11 /8
54
1
6 /2
32
DRAW OUT
SWITCH
H
30
44
G
L.H. SIDE VIEW
FRONT VIEW
- 2000 lbs.
909 kg.
K
LOWER
UNIT
7FT 6
*
J
6-1/4
2-7/8
2-1/2
P
6
14-3/8
Q
1-11/16
4-1/2
2
1/2
C
L
Q
N
30
42
6-1/2
5-3/8
5
7-5/8
2-1/2
1-1/2
12
FRONT
Notes:
B1 — AC Power Bus (if ordered)
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
Q — Recommended Position for Incoming Feeder Conduit
W — Lifting Angle
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
2-1/2
FLOOR PLAN
UPPER
UNIT
E19
GE Limitamp® Medium Voltage Motor Control
Enclosures
Enclosure Outline Dimensions 2400-4160 Volts
600A, 2 high, 44" wide walk-in
W
*
C
SIDE
2-1/8
4
E
*
C
6
*
5-5/8
E
1
2 /2
B1
6-1/2
T *
L2
2
4-1/2
UPPER
UNIT
*
B1
1
1
6 /2 6 /2
L1
*
2
T
6-1/2
L3
6-1/2
1
2 /2
UPPER
UNIT
LOWER
UNIT
52
T
8
DRAW OUT
SWITCH
4-1/4
FRONT
E
7FT 6
111.3
101.3
*
T
90
LOWER
UNIT
*
4-1/2
50
11 3/8
23
6 1/2
DRAW OUT
SWITCH
6
6.38
44
30
L.H. SIDE VIEW
2
2
31
FRONT VIEW
2
2
31
25.63
2.19
2.19
30
6-1/4
2-7/8
- 3350 lbs.
1523 kg.
37
92
R.H. SIDE VIEW
2-3/16
K
SPACE REQ'D TO OPEN DOORS 90 DEGREES
6
LOWER
UNIT
1-11/16
P
2
14-3/8
Q
18-1/8
4-1/2
1/2
30
6-1/2
Q
2-5/8
N
UPPER
UNIT
7 5/ 8
1-1/2
C
L
7FT 8
J
4
2-3/16
9 3/ 16
FRONT
FLOOR PLAN
Notes:
B1 — AC Power Bus (if ordered)
C — Control Lead Terminal Board
D — Motor Lead Terminal Connection
E — Ground Bus Terminal Connection
F — Ground Terminal Connection (if ordered)
G — Space Required to Open Doors 90°
H — Four-foot Aisle for Contactor Removal
J — Mounting Holes for 1/2" Diameter Anchor Bolts
K — Space Available for Incoming Conduit
M — Recommended Position for Incoming Motor Conduit
N — Recommended Position for Incoming Control Conduit
P — Recommended Position for Incoming Power Conduit
Q — Recommended Position for Incoming Feeder Conduit
W — Lifting Angle
* — Indicates Terminal Location - Approximate for Cable Length
s — Approximate Weight
E20
V
GE Limitamp® Medium Voltage Motor Control
Protection & Control
Fuses
Introduction
To protect the motor branch circuit against the damaging
effects of short circuits, current-limiting power fuses are used
in Limitamp control. They interrupt all overcurrents of magnitude greater than intended for contactor interruption. On full
fault, these fuses start limiting current within the first 1/4 cycle
and interrupt within the first 1/2 cycle. Because they are fast
acting, these fuses are easily coordinated with system protective relaying to give selectivity in short-circuit protection.
Standard fuses supplied with Limitamp CR194 Control are
bolt-in type. Clip-in fuses may be supplied in applications
where motor full-load current plus service factor does not
exceed 320 amperes, but they must be specified by the
customer. The blown fuse indicator and the anti-single-phase
trip are available with bolt-in fuses only.
Motor-starting fuses are current-limiting as indicated in
Figure F.1. They melt before the current in the first major loop
can reach its peak value when subjected to melting currents
within the current-limiting range. Consequently, the total
“let-through” energy involved is low because the fuses operate
with such great speed. The contactor, current transformers,
and overload relays of a Limitamp controller are coordinated
with the fuses to give full protection to the system.
A design feature of motor-starting fuses inherently limits recovery voltage to safe values, thus protecting control insulation.
Controller fuses must have sufficient capacity to carry starting
and full-load currents, and yet must interrupt fault currents at
a desirable low value. They are therefore made in a number
of ratings or sizes so that maximum protection can be obtained
over a range of motor horsepowers.
For a given set of motor characteristics, it is usually possible
to use one of several fuses. The smallest fuses will normally
be furnished. If the load is a fluctuating one, involving swings
of current above full-load, the fact should be noted in specifying a controller so that a fuse one size larger than minimum
will be furnished.
Transient conditions do not generally affect motor-starting
fuses since the sand in the fuse conducts heat away rapidly.
If transient currents do not come within 25 percent of the
minimum melting curve on a time basis, melting will not
occur. For example, if the melting curve for a given size fuse
shows melting in 10 seconds at 1000 amperes, transient
peaks of 1000 amperes would be withstood repeatedly up
to 7.5 seconds duration.
F
Peak of 96,000 amperes
without fuse
9R fuse limits peak current
to 21,000 amperes
“let-through”, approx. 1/5
the peak current without
the fuse or 1/25 the
mechanical stress on
power system components.
Figure F.1 Current-limiting action of typical fuse
For a lineup of controllers it may be desirable to use fuses
larger than minimum size to reduce the variety of spares
required. Such standardization must be specified, however.
Blown Fuse Trip And Blown Fuse Indication
The possibility of having one fuse melt, thereby causing a
large motor to single phase, has inhibited consideration of
fuse-contactor-type starters. Although such a condition is in
reality quite unlikely, GE Limitamp Control can be equipped
with an optional special mechanism which will detect a
blown fuse and cause the contactor to open. Bolt-on fuses
contain button indicators to show a blown fuse. This button
indicator can be coupled with an anti-single-phase trip
mechanism containing a control contact, which, when used
in contactor control circuit, can open the contactor to prevent
single phasing and/or provide a blown fuse indication on the
front door. Blown fuse indication on the front door is available
for CR194 equipment only.
F1
GE Limitamp® Medium Voltage Motor Control
Protection & Control
surge wave front to keep the turn-to-turn voltage stress in
the machine winding to a minimum.
F
Surge capacitors and arresters should be installed as close
to the machine terminals as possible. Capacitors and
arresters may require a 22-inch wide auxiliary enclosure if
installed in the controller.
Overload Relays
Figure F.2 Blown fuse indicator
With this feature, fuses are always bolted in place for correct
orientation and alignment. In addition to providing maximum
reliability, this feature makes it impossible to mount the fuse
in an upside down position which would nullify the trip bar
operation.
Coordination With Other Protective Devices
When Limitamp starters are installed on a given power system,
it is necessary to coordinate the time-current characteristics
of system protective devices, such as Multilin Protective
relays, with those of the starters. Use the time-current
curves included in GE Time Current Curve No. GES-5000 for
this purpose. It includes overload-relay tripping curves, fusemelting curves and fuse-clearing time curves.
Surge Protection
The economics of rotating-machine insulation dictates that
the machines be protected from voltage stresses above the
operating level insofar as is reasonably possible. Overvoltage
damages reduce the insulation life. There are many causes
of accidental overvoltage whose effects may be reduced by
protective means. The most prominent causes are:
1. Lightning.
2. Physical contact with higher voltage system.
3. Repetitive restrike (intermittent grounds).
4. Switching surges.
5. Resonance effects in series inductive capacitance circuits.
Switching transients occur in every electrical system. A wellknown phenomenon associated with vacuum interrupters is
current chop. GE utilizes vacuum interrupters constructed
with widely accepted contact tip materials to provide low
chopping currents.
Additional protection against surges for rotating machines
may be economically attractive for system voltage installations
of 2300 volts and above. This consists of a surge capacitor
and lightning arresters.
Lightning arresters reduce the amplitude of the voltage
impulse wave. The surge capacitor further reduces the
amplitude — but in addition, reduces the steepness of the
wave front. It is important to reduce the steepness of the
F2
Several types of overload relays are used in Limitamp
Control. Limitamp controllers use thermal-overload relays,
unless other types are specified.
Thermal-Overload Relays
Overload relays provided in Limitamp control have inverse-time
characteristics and are ambient compensated. Limitamp
control utilizes either a thermal-type relay or the solid-state
protective relay. These relays, operating from current transformers in the control equipment, carry current proportional
to the motor-circuit current. When motor overloads occur,
the relay operates to open the main power contactor. The
time required for operation varies inversely with the magnitude of the overload. The standard thermal relay should only
be used on motors with starting times up to 10 seconds.
External-Reset Overloads
Some industrial plants do not permit a machine operator to
open the doors of control equipment enclosures, this being
reserved for electricians. To make possible overload-relay
reset by operators, it is therefore necessary to provide some
means to do so outside the enclosing case. This is accomplished by providing a mechanical-linkage reset mechanism
between the relay and door-mounted reset button.
Where external reset is not absolutely necessary, greater
simplification of relay mounting results, and this is of benefit
to the user because it simplifies maintenance.
Inasmuch as the tripping of an overload device is indicative
of too much strain on the motor, it is preferable that only
experienced and reliable personnel be allowed to reset overloads. Such personnel should be capable of realizing whether
it was an unintentional overload on the part of the machine
operator or whether there is an electrical and/or mechanical
defect. The customer should consider this factor, however,
before electing to provide externally reset overloads.
Solid-State Overload Relays
Solid-state overcurrent protection is available as an optional
feature in place of standard thermal overload relays. The
inverse-time characteristics can be adjusted to protect
motors of various characteristics, such as long acceleration
time or short allowable-stall times. Characteristics are accurate and have a smaller error band compared to bimetal
relays. The solid-state overload relay is recommended for
GE Limitamp® Medium Voltage Motor Control
Protection & Control
hermetically sealed air-conditioning motors, and is well suited
as a stall-protection relay.
Multifunction Solid-State Relays
Large motors on vital drives need accurate protection
against overloads, phase unbalance or ground faults.
Multifunction solid-state relays are available from GE that
offer total motor protection in one compact package. Basic
protective functions such as overtemperature, overload,
instantaneous overcurrent, open-phase, phase reversal,
phase unbalance, ground-fault, load jam, load loss and
bearing overtemperature protection can be provided.
Overtemperature Relays
Some motors have RTDs placed in the stator slots. The purpose
is to obtain an indication of winding temperature by measuring the RTD resistance and its change with temperature.
Difficulty arises in obtaining a continuously accurate indication
of temperatures, however, because of the time lag of heat
transfer from the stator conductors to the RTD caused by the
insulating material surrounding the conductors. Temperature
changes in the conductor will not be reflected in RTD resistance change until heat is transferred through the thermal
resistance and capacitance of the insulating material.
Temperature
in Degrees C
160
Hot Spot of WDG in Slot
120
RTD
80
Tooth
40
Power
On
Power Off
0
0
20
40
60
80 100
Time in Seconds
120 140
Figure F.3 Approximate temperature of RTD in large motor during locked rotor
If the copper temperature is changing very rapidly, such as
during locked rotor, the RTD will lag far behind the copper
temperature as shown in Figure F.4. Consequently, monitoring
the RTD temperature is inadequate for thermal protection
during rapid-transient conditions. However, for steady-state
indication of temperature, the RTD is very accurate.
A relay which responds to changes in resistance of RTDs,
providing steady-state indication of motor-winding temperature, used in conjunction with a bimetallic overload relay
will provide reasonably precise over-temperature protection
for the motor.
Available solid-state relays contain a device which will more
accurately compute hot-spot temperature by utilizing RTD
amperes and line amperes. This relay accurately tracks
motor heating and is recommended in preference to the
separate bimetal relay and RTD relay.
F
Open-Phase And Phase-Unbalance Protection
A three-phase motor may be damaged when subjected to
unbalanced line currents. Usually, the damage occurs in the
rotor from overheating, caused by reverse sequence components of currents not detected by normal overload devices.
The rate of motor heating will be a function of the degree of
phase unbalance, the most extreme of which is the openphase condition. For that reason, open-phase relays should
operate instantaneously to avoid serious motor damage.
Likewise, a motor may be damaged over a period of time with
as little as 10% unbalance, where unbalance is a transient
condition which would not justify instantaneous shutdown.
Consequently, the time to trip should be delayed in proportion
to the percentage of unbalance.
More comprehensive open-phase or single-phase protection
can be obtained by applying a solid-state motor-protective
relay, which will trip the contactor in the event of an open
phase, regardless of the cause, even if external to the vacuum
Limitamp control.
A possible concern that may arise when applying a mediumvolt contactor to a transformer feeder is what happens to
the contactor when a voltage dip occurs. In the past, the
contactor would drop out — removing power from the primary
of the transformer when the contactor coil power is reduced
to 60 to 80 percent of full voltage. To prevent dropout during
loss of control voltage, latching contactors should be applied.
In these cases, the contactor is latched by a closing coil and
unlatched by a trip coil. A capacitor trip device can be applied
to trip the contactor in the event of total loss of control
power. (See Latched Contactors, page B4Update reference
to current page.)
Current Differential Protection
The term differential, as applied to a type of protective
relaying, designates the principle on which the scheme
operates — that is, a difference in current. The relays used
are connected in such a way as to detect a percentage
differential in current between ends of a motor winding.
Ordinarily, in a machine operating without a winding fault,
the current into one end of a phase winding is equal to the
current out the other end of the same winding. When a fault
occurs, however, the current into one end of the winding is
short circuited inside the machine (to another phase or to
ground) at the place of fault, so that a differential occurs
between current “in” and current “out.” This causes the relay
to operate. The percentage differential may at times be
quite small when the fault is located at a point of high
impedance inside the motor winding, and this is the reason
why straight over-current relays alone do not always give
adequate protection.
F3
GE Limitamp® Medium Voltage Motor Control
Protection & Control
F
The cost of this type of relaying is justified by the size of the
investment to be protected. Large motors (usually above
1500 hp) that are expensive to repair or replace often employ
differential relays.
Specifically, differential relays accomplish the following:
1. Provide for power interruption to a motor in the event of a
phase-to-phase insulation failure in the motor windings.
2. Provide for power interruption to a motor in the event of a
phase-to-ground fault in the motor winding.
The primary use of differential relays in Limitamp Controllers
is to give fast, sensitive protection for faults in the end turn
outside the stator punchings. Such faults are relatively rare
compared with ground faults. However, when they do occur,
the presence of differential relays would probably mean the
difference between minor and extensive damage.
Two methods of motor differential protection are available.
One uses six identical current transformers: three located in
the motor leads and three located in the wye points of the
motor windings, usually at the motor. In conjunction with
these six current transformers, a Multilin SR469 or similar
relay is used to detect the difference in current in the current
transformer (CTs). The other method, known as self-balancing,
uses three donut-type CTs. Both the motor leads and the
wye connections are brought back through the holes in the
donut CTs. For this system, Multilin SR469 relay can be used
Ground-Fault Relays
Ground fault relays are justified economically for all motors
rated 2300 to 7200 volts, 150 horsepower and above. The
purpose is to provide interruption of power to the motor as
rapidly as is practical after positive indication that a ground
fault has occurred. Most multifunction relays such as Multilin
SR369/469 offer ground fault protection as a standard. Refer
to component brochures for further details.
The time of interruption of ground-fault current is dependent
on several factors:
1. Sensitivity of the ground-fault relay.
(a) Instantaneous type
(b) Time-delay type
2. Magnitude of ground current.
3. Clearing time of the power interrupter.
The importance of clearing ground-fault current rapidly cannot be overstressed. Ground current inside rotating machines
causes damage to the lamination which, if not interrupted
rapidly, necessitates complete disassembly and repair of the
motor.
Although most ground-fault relays are now of the instantaneous type, few applications do require inverse-time current
relays for coordination and selectivity reasons. The use of
F4
instantaneous-type relays is made possible through the
employment of a zero-sequence window-type current
transformer installed in the starter in such a way as to permit
all three conductors of the three-phase line to be used as the
current-transformer primary.
Phase currents add to algebraic zero, regardless of magnitude,
and no secondary current flows except that induced by the
primary current going to ground. This system gives positive
indication of ground current, eliminates false tripping and
permits instantaneous relaying.
If time coordination with other ground-fault relays is necessary, time overcurrent relays may be used in the currenttransformer arrangement.
For certain sized motors where the power system permits,
ground-fault relays may be used as a less expensive alternative
to differential relays. Most phase-to-phase winding faults
detected by differential relays result in a simultaneous
phase-to-ground fault, thereby operating the ground fault
relay. For that reason, ground fault relays may be used as a
less expensive alternative to differential relays.
Another method of detecting ground currents in a three-phase
system employs three separate line-current transformers,
one in each phase, with the secondaries fed through a single
current relay. In this system, the secondary currents should
sum to zero just as they do in the primary of the window
type current transformer. And, with no ground current flowing,
the three secondary currents do add and cancel each other
out. Ground current only will cause the relay to operate. For
currents of large magnitude, however, such as motor lockedrotor current, current-transformer saturation becomes a
problem, causing residual current to flow in the relay coil...
resulting in false tripping. To prevent false tripping with the
residual connection, time-delay relays are necessary to permit
riding over the starting period of the motor. This fact makes
instantaneous relays impractical in the residual system.
Instantaneous ground-fault relays may be applied to Limitamp
(NEMA Class E2) controllers without limitation on available
ground current. The fuse and relay-contactor clearing times
are such that ground-fault currents up to and including the
fuse rating will be cleared without damage to the controller.
Standard ground-fault relay used in Vacuum Limitamp
Control is a solid-state relay which operates on approximately
4 to 12 amperes ground-fault current. If greater sensitivity is
required, other solid-state ground-fault relays may be furnished
which can be adjusted to trip as low as 1 ampere. However,
extreme care must be exercised in applying ground-fault
relays of such low pick up. They could trip falsely on systemcharging current. A magnetic ground-fault relay can be
provided on request.
GE Limitamp® Medium Voltage Motor Control
Protection & Control
Undervoltage Protection
NEMA defines undervoltage protection as a device whose
principal objective is to prevent automatic restarting of
equipment.
Instantaneous undervoltage protection is inherent to the
standard 3-wire control circuits, since the contactor will drop
out and stay out on loss of voltage.
Time-Delay
Time delay undervoltage protection (TDUV) for a Limitamp
controller can be provided to prevent shut-down of a motor
on adjustable duration voltage dips below the adjustable
dropout voltage. With either time-delay or the standard
instantaneous undervoltage protection, the motor remains
disconnected until the operator restarts the motor.
Automatic Restart
GE offers an auto-restart relay which automatically restarts
the motor following a momentary outage. It also can be set
to delay contactor reclosure following power restoration so
the motor is not re-energized out-of-phase due to residual
field or cage rotor currents,
Ride Through
This optional feature provides control to maintain a standard
electrically-held contactor in the closed position through
momentary control voltage outages up to 20 cycles (333
milliseconds). Also, protective relay operation and/or normal
stop control is configured to allow the contactor to open
without the ride-through delay.
Synchronous-Motor Control and Excitation
Synchronous Motor Control
GE Limitamp synchronous-motor controllers are offered for
both brush-type and brushless synchronous motors. As a
standard, both brush-type and brushless synchronous
motor controllers are equipped with the GE-Multilin SPM
solid-state field application and protection module. This
microprocessor-based module provides basic synchronous
motor control and protection functions including squirrelcage starting protection, power factor and pull-out running
protection, and field application control to maximize pull-in
torque (for brush-type machines only). Digital displays of
motor running line current and power factor are featured
along with a keypad for entering set-point parameters.
Available options are field loss protection, exciter voltage
check protection, field amps display, exciter volts display,
incomplete sequence protection, and power factor regulation
(when used with compatible SCR type variable field exciters).
Exciters For Brush Type Motors
For synchronous motors equipped with sliprings and brushes,
Limitamp is offered with a variety of excitation options.
Single-phase solid-state exciters can be integrated in the
controller NEMA 1 ventilated enclosure up to 9 kW (exciters
must be derated for non-ventilated enclosures). Larger
exciters require auxiliary enclosures that can be placed in
the common bussed line-up with the Limitamp controllers.
Two basic types of exciters are available:
• SFC (fixed excitation with adjustable tapped transformer)
• VFC (on-line adjustable excitation by manual or automatic
means)
Fixed Excitation
The basic exciter offering is a single-phase, tapped-transformer,
static field contactor (SFC). The SFC is a solid-state switching
device consisting of silicon controlled rectifiers (SCRs) in a
bridge circuit for rectification of AC power to DC. Additional
SCRs are provided to switch the field discharge resistor. During
starting, the SFC switches the field discharge resistor on so
that the induced field current from the motor field is passed
through the discharge resistor. The field discharge resistor is
also switched on to discharge the field current when DC is
removed at motor shutdown and if, during normal motor
operation, the motor field generates a high voltage surge
above approximately 600 volts, such as would occur if the
motor “slips” a pole. When the motor has accelerated to near
synchronous speed, the GE-Multilin SPM module signals the
SFC to apply DC to the motor field, the SFC switches the field
discharge resistor off and causes the SCRs in the rectifier
bridge to turn on, resulting in DC being applied to the motor
field. The bridge SCRs are gated “full on” so that they emulate
a diode rectifier bridge. The voltage of this DC field supply is
determined by the tap connection of the customized transformer that feeds AC power to the rectifier bridge. This
transformer has secondary taps arranged so that the DC
voltage can be adjusted in 5% increments from 70% to
130% of the transformer nominal secondary voltage by
changing connections at the transformer tap.
Variable Excitation
Another exciter offering is the electronic variable field contactor
(VFC). The VFC is available in single- or three-phase versions.
Three phase VFC exciters are recommended for sizes 20 kW
and above (125 VDC fields), and 25 kW and above (250 VDC
fields). Like the SFC (above), the VFC controls the switching of
the field discharge resistor and DC to the field depending on
inputs from the GE-Multilin SPM. The difference is that the
gating of the rectifier bridge SCRs can be controlled by varying an analog voltage at its control input. This allows on-line
control of the DC exciter voltage by any of several means:
1. Manual control via a door-mounted potentiometer.
2. Automatic control via the field current regulation module.
3. Automatic control via the GE-Multilin SPM equipped with
power factor regulation.
F5
F
GE Limitamp® Medium Voltage Motor Control
Protection & Control
F
On-Line Field Adjustment
The manual potentiometer is normally mounted on the door
and allows an operator to adjust the motor field current
while the motor is running. This provides the convenience
over the SFC type exciter of not having to shut down the
motor and physically move cables between several taps on
the exciter transformer.
Field Current Regulation
The field current regulator module also employs a manual
potentiometer for adjustment of the field current. However,
the regulator provides a closed loop control so that the VFC
DC output is automatically adjusted to maintain the set-point
field current as set by the manual potentiometer. This feature
allows the operator to set the field one time at a desired field
current. The field current will then be regulated to compensate
for field resistance changes due to field winding heating or
system voltage fluctuations. The leading reactive power
contribution of a synchronous motor is related to the level of
field current. If it is desired to maximize the contribution of
leading reactive power from the synchronous motor at all
shaft loading conditions, set the field current as high as possible without exceeding its nameplate rating. Field current
regulation is the ideal choice for maximizing the leading
reactive power because it allows the operator to set the field
current very close to rated and not worry about the current
“creeping” higher or lower from the potentiometer setting.
Power Factor Regulation
Power factor regulation is an excellent choice for applications
requiring field forcing, which is applying DC excitation above
its rating for a short time. Many drives, such as chippers, are
subject to transient impact overloads many times the motor
rating for short time intervals. By forcing the field, the synchronous motor can be enabled to deliver shaft torques
above the rating without “pulling-out” of synchronism and
shutting down. GE tests on chipper drives have demonstrated
that the power factor regulation option can provide the rapid
field forcing feature to prevent disruptive motor “pull-out.”
Power factor regulation operates on the principle that the
motor running power factor is a good predictor of motor pull
out. Before a motor pulls out of step (as a result of high shaft
loading from a hard or oversized log entering a chipper), the
power factor dips in the lagging direction drastically. By setting the regulator such that it boosts excitation as the power
factor dips more lagging than the regulator set point, the
motor running power factor is held to a “healthy” level and
motor “pull-out” is avoided. Power factor regulation also allows
the field excitation power to be conserved when the motor is
running lightly loaded or unloaded. This not only allows
energy conservation but also deeper no-load cooling of the
motor windings, so the motor runs cooler for a given level of
RMS loading. Power factor regulation can help regulate the
power system voltage by minimizing reactive power swings
over a wide range of motor loads.
F6
Brushless Synchronous Control
The GE-Multilin SPM is also designed for use with brushless
synchronous motors. It provides timed field exciter application,
power factor and pull-out protection and starting/stall protection. Included with the standard brushless synchronous
motor Limitamp controller is a variable exciter field supply
consisting of a door mounted variable autotransformer and
rectifier for on-line exciter voltage control.
Fixed-Tap Field Resistor
A fixed-tap field resistor may be used for separate DC source.
This resistor, when supplied with the Limitamp panel, is
mounted on top and is connected directly in series with the
synchronous-motor field as a means of adjusting field current.
The resistor is continuously rated with taps to adjust field
current 10-percent above and below rated full-load field current
for rated power factors in approximately 2 1/2-percent steps.
Other Options
Exciter Voltage Check Protection, field circuit continuity check
protection and field ground protection are also available on
some applications.
Control Circuits
Control Power Transformer
Control power transformers used in Limitamp starters are
single-phase, air-cooled, core-and-coil construction with
high-voltage windings covered to prevent contamination by
dust and dirt. Those furnished in standard panels have a 25kV Basic Impulse Level (BIL) rating. 750VA is standard in a basic
controller. Transformers 2 kVA and above are optional, and
above 3 kVA may require an auxiliary enclosure for mounting.
When specified, a 500VA, 60-kV BIL rated control transformers
can be furnished, but will require special space consideration.
Omission Of Control Power Transformer
A lineup of starters can use a common control power transformer or other source of control power. In either case, the
power source and control circuit must be provided with
interlocking relays so the loss of either will shut down all
operating motors. Control bus is required in all controllers if
a common source of control power is used.
A single source of control power results in some disadvantages:
(1) Unless each panel is provided with a fused control switch,
troubleshooting must be done with live wires in the panel;
(2) a single controller, if relocated independent of the lineup,
will require modification to add a control transformer and
fuses; and (3) the loss of control power will cause shutdown
of all machines.
Timing Relays
Solid State and or Electronic timing relays close or open a
GE Limitamp® Medium Voltage Motor Control
Protection & Control
circuit after a definite elapsed time on either energization or
de-energization.
Incomplete-Sequence Relay
An incomplete-sequence relay is used to shut down the
motor (squirrel-cage induction or synchronous) on reducedvoltage starting if the control fails to transfer to full voltage.
This standard feature protects the autotransformer from
energization longer than rated time. The relay can be furnished
for other sequencing functions also.
Jogging
Drives requiring “jogging” (or inching) must have the control
circuit arranged for repeatedly closing the line contactor at
short intervals to effect small movements of the driven
machine. The line contactor is held closed only as long as
the JOG button is held depressed.
An anti-kiss circuit is provided with the JOG push button,
including a jog relay. The jog relay closes when the JOG button
is depressed, energizes the line contactor coil, seals itself in
around the JOG button and is dropped out only after the line
contactor has closed and wiped in. This makes possible
repeated opening and closing of the line contactor, but also
assures that the tips wipe closed each time.
Current Interlocking
Current-operated relays indicate when the arc is completely
extinguished after the line contactor opens. These relays
then permit closure of a reversing contactor. A short circuit
may occur if a reversing contactor closes after the forward
contactor opens but before the arc has been extinguished.
This circuit is necessary in controllers with “plug stop” or
where pressing one instantaneous contact picks up reversing
contactor while running forward. Current interlocking is not
normally used on overhauling loads such as mine hoists,
since during the lowering cycle enough current may not be
drawn to operate the interlocking relays.
This circuit is not supplied on standard Limitamp reversing
controllers, as the operator is expected to turn the selector
switch to reverse only after pressing the STOP button.
Potential Interlocking
Potential interlocking is used for the same reason as in current
interlocking. Potential transformers and interlocking relays
are added to prevent closure of one primary contactor before
complete interruption of the arcs at the tips of the other
(reverse) contactor. Operation is based on the principle that
by the time the disconnected motor’s generated EMF has
decayed to the point where the interlocking relays have
dropped out, the arc in the disconnected contactor has
extinguished, and closing the reversing contactor is permissible.
Instrumentation
Ammeter
An ammeter (panel-type or switchboard-type) is used to
indicate either motor amperes or total incoming amperes. It
can either be hardwired to the current transformer of one
phase or all three phases can be monitored by the use of a
selector switch. One current transformer is required for singlephase reading; two are required for open delta three-phase
reading; three are required in a wye circuit. Three windowtype current transformers are provided as standard on
Limitamp Controllers.
Voltmeter
The voltmeter (panel-type or switchboard-type) is used to
indicate phase-to-phase potential. One potential transformer
is required if only one phase-to-phase potential is monitored.
Two potential transformers, connected in an open-delta
configuration, are required along with a selector switch to
monitor any one of the three phases. Three potential transformers mounted in an auxiliary enclosure and a selector
switch are required to read both phase-to-phase and phaseto-neutral potentials.
Power Factor Meter
A power factor meter is used to indicate power factor lead
or lag. It is useful in adjusting power factor in synchronous
motor drives and in determining the power factor of a given
drive. The addition of a power factor meter requires the
addition of potential transformers, or of some other potential
source with correct phase and accuracy. When a synchronous
starter is supplied, the GE-Multilin SPM has a digital power
factor meter built into the device.
Wattmeter
A wattmeter is used to indicate loading or useful power
being delivered to a drive at any instant. The instrument is
typically calibrated in kilowatts. Two potential transformers
connected in open delta are required for operation.
Operation Counter
The operation counter is electrically operated from a control
interlock on the line contactor. It totals the number of times
the contactor has closed and opened, and thus provides
data for the establishment of maintenance schedules, a
record of the number of batch processes initiated over a
given period of time, or any other purpose where the number
of line contactor closures may be significant.
Varmeter
The varmeter indicates lagging or leading reactive power. It
requires the addition of two potential transformers. In totaling
reactive power on a bus feeding several loads, individual
vars for each load can be measured by means of individual
varmeters on each motor and added directly.
Potential interlocking is used on hoists and other applications
having possible overhauling loads.
F7
F
GE Limitamp® Medium Voltage Motor Control
Protection & Control
F
Elapsed Time Meter
An elapsed time meter is used to indicate hours of operation
or shutdown time of a particular motor or drive for the
purpose of production records, maintenance scheduling, or
engineering records.
Transducers
Transducers are used to transmit electrical properties to
remote devices, while maintaining a high accuracy when the
cabling distance or resistance may be high. The standard
output is 4 - 20 mA DC. Current transducers require (1) CT;
voltage transducers require (1) PT; watts transducers require
(2) CTs and (2) PTs.
Test Blocks
Current and potential test blocks provide a plug-in feature
for portable meters, to obtain readings or records without
shutting down the machine.
Watt-Hour Meter
Several Power Multifunction Meters are available such as the
GE-Multilin PQM and the GE Multilin EPM series.
F8
GE Limitamp® Medium Voltage Motor Control
Components
Components
G
Typical push buttons, selector switches and control wiring
used in standard Limitamp appear below, and the following
pages detail a range of typical components.
Typical push buttons
Function
Start-Stop
Stop
Application
Device used
FVNR starters with 3-wire
CR104P momentary type
control
CR104P momentary type
Starters with 3-wire control CR104P maintained type
Starters with 2-, 3-wire
Options:
control
Mushroom head
Provisions for locking open
Forward-Reverse-Stop FVR starters
Fast-Slow-Stop
2-speed starters
CR104P momentary type
CR104P momentary type
Typical selector switches
Function
On-Off
Hand-Off-Auto
Fast-Slow-Off-Auto
Application
Permissive start with 2-,
3-wire control
Auto or manual start with
2-wire control
2-speed starters
Device used
CR104P maintained type
CR104P maintained type
CR104P momentary type
Control wiring details
Item
Control wiring type
Control wire size
Control wire terminals
Wiremarkers
Wire color code
Terminal blocks
Standard
MTW, thermoplastic, 600V, 90°C
AWG #14
Stripped wire
Plastic sleeve type
Power-Black
Control-Red
Neutral-White
Ground-Green
CR151B, 30A, 600V
Option
SIS (vulkene)
AWG #12
Insulated ring type
Heat-shrinkable labels
EB-25, 50A, 600V,
Connectron Type KUX
G1
GE Limitamp® Medium Voltage Motor Control
Components
G
Multilin 239 Motor Protection System
Applications
• Complete protection of small to medium sized motors
• Pumps, conveyors, compressors, fans, sawmills, mines
Key Benefits
• Save on installation cost – compact design
• Enhanced protection – incorporates thermal models
• Setting flexibility – multiple setpoint groups
• Simplify testing – built-in simulation features
• Asset Monitoring – temperature monitoring via optional
RTD inputs
• Access information – via Modbus RTU™
• Follow technology evolution – flash memory for product
field upgrade
Features
Protection and Control
• Thermal Overload (15 selectable curves) – Trip and alarm,
immediate current overload alarm
• Phase short circuit
• Mechanical jam
• Thermal memory lockout
• Single-Phasing /Current unbalance
• Ground fault – trip and alarm
• Overtemperature: via thermistor or optional RTD inputs
• Undercurrent
• Breaker Failure
• Trip/alarm/auxiliary/service outputs
• Multi-speed motor protection
• Motor start supervision
G2
Monitoring and Metering
• Status/current/temperature display
• Fault diagnosis
• Trending
• Trip record, last 5
• Process control
• Optional analog output
User Interface
• RS485 serial port
• Keypad
• 40 character illuminated display
• 6 LED indicators
• Includes EnerVista software
GE Limitamp® Medium Voltage Motor Control
Components
Multilin 369 Motor Protection System
G
Applications
Features
• Medium size motors
• “Down Hole” pump applications
• Suitable for applications involving Variable Frequency Drives
Protection and Control
• Full metering: A V W var VA PF Hz Wh varh demand
• Fault diagnosis
• Event record
• Statistical information & learned motor data
• Voltage/frequency/power display (M)
• 4 analog outputs (M)
• Oscillography & Data Logger
Key Benefits
• Unique and advanced protection features – Back-spin
detection, advanced thermal model, most advanced
thermal model including multiple RTD inputs for stator
thermal protection
• Complete asset monitoring – stator, bearing & ambient
temperature, optional full metering including demand &
energy
• Improve uptime of auxiliary equipment – through I/O
monitoring
• Reduce troubleshooting time and maintenance costs –
event reports, waveform capture, data logger
• Simplify testing – built-in simulation features
• Multiple communication protocols – Modbus RTU, Profibus,
Device Net
• Cost effective access information – through standard
RS232 & RS485 serial ports, and optional embedded
Ethernet and Profibus Ports
• Multiple communication ports – RS232, RS485, and Fiber
Optic and Ethernet
• Follow technology evolution – flash memory for product
field upgrade
• Long lasting life – when exposed to chemically corrosive
and humid environments with optional conformal coating
• Suitable for hazardous locations – Underwriters
Laboratory certification for Class 1 Division 2 applications
• Installation flexibility – remote display and remote RTD option
• Safe and reliable motor re-start on “Down Hole” pump
applications – unique back spin detection feature detects
flow reversal on a pump motor, enabling timely and safe
motor restarting
Monitoring and Metering
• Thermal model biased with RTD and negative sequence
current feedback
• Phase short circuit
• Undervoltage, overvoltage
• Underfrequency
• Thermal overload
• Undercurrent for load loss
• Locked rotor / mechanical jam
• Variable lockout time
• Current unbalance
• Ground fault O/C
• Overtemperature 12 RTDs (R)
• Starts/hour, time between starts
• Phase Reversal (M)
User Interface
• Front Panel 10 LEDs, key pad, and backlit LCD display
• RS232, and RS485 ports – up to 19,200 bps
• Optional embedded Ethernet port
• Optional Profibus Protocol via dedicated port
• ModBus™ RTU Protocol
• ModBus™ over TCP/IP
• Optional Device Net Protocol
• Includes EnerVista software
G3
GE Limitamp® Medium Voltage Motor Control
Components
G
Multilin 469 Motor Protection System
Applications
Features
• Protection and management of three phase medium and
large horsepower motors and driven equipment, including
high inertia, two speed and reduced-voltage start motors.
Protection and Control
• Thermal model biased with RTD and negative sequence
current feedback
• Start supervision and inhibit
• Mechanical jam
• Voltage compensated acceleration
• Undervoltage, overvoltage
• Underfrequency
• Stator differential protection
• Thermal overload
• Overtemperature protection
• Phase and ground overcurrent
• Current unbalance
• Power elements
• Torque protection
• Dual overload curves for 2 speed motors
• Reduced voltage starting control
Key Benefits
• Unique protection features – Comprehensive motor protection plus voltage dependant overload curves, torque
metering and protection, broken rotor bar protection
• Most advanced thermal model – Including multiple RTD
inputs for stator thermal protection
• Advanced monitoring functions – vibration, bearing
temperature
• Best in class man machine interface (MMI) – Large backlit
display with 40 characters to view relay information and
settings in direct sunlight, full numerical keypad, and setpoint navigation keys.
• Minimize replacement time – Draw-out construction
• Complete asset monitoring – Temperature, Analog I/O, full
metering including demand & energy
• Improve uptime of auxiliary equipment – Through I/O
monitoring
• Reduce troubleshooting time and maintenance costs –
Event reports, waveform capture, data logger
• Simplify testing – Built in simulation features
• Cost effective Access to information – Via Modbus RTU
protocol, through standard RS232 & RS485 serial ports,
and optional Modbus RTU over TCP/IP through embedded
Ethernet Port to connect to 10MB Ethernet local or wide
area networks.
• Follow technology evolution – Flash memory for product
field upgrade
• Long lasting life when exposed to chemically corrosive and
humid environments with optional conformal coating
Monitoring and Metering
• A V W var VA PF Hz Wh varh demand
• Torque, temperature
• Event recorder
• Oscillography & Data Logger (trending)
• Statistical information & learned motor data
• Motor starting reports
User Interface
• Front Panel LEDs, full key pad, and backlit LCD display
• RS232, and RS485 ports – up to 19,200 bps
• Optional Embedded 10BaseT, 10Mbs Ethernet port
• ModBus™ RTU Protocol
• ModBus™ over TCP/IP
• Optional Device Net Protocol
• Includes EnerVista software
Inputs and Outputs
• 12 RTDs, programmable
• 5 pre-defined & 4 assignable digital inputs
• 6 output relays
• 4 analog inputs
• 4 programmable analog outputs
G4
GE Limitamp® Medium Voltage Motor Control
Components
Multilin 735/737 Feeder Protection System
Applications
• Primary circuit protection on distribution networks at any
voltage level
• Backup protection of busses, transformers and power lines
Key Benefits
• Minimize replacement time – draw-out construction
• Simplify testing – built-in simulation features
• Access information - via Modbus RTU
Features
Protection and Control
• 3 phase time overcurrent
• Ground time overcurrent
• 5 curve shapes
• 4 curve shift multipliers per curve
• 10 time multipliers per curve
• ANSI, IAC, or IEC/BS142 curves
• Phase instantaneous overcurrent
• Ground instantaneous overcurrent
• Pickup level for each overcurrent
• Outputs: trip, aux trip, service
• Aux trip: 86 lockout, ground trip
• SR737 has 8 additional output relays
G
Monitoring and Metering
• Trip record of last 5 trips
• Pre-trip data includes currents
• True RMS sensing
User Interface
• 8 LED trip indicators
• 4 LED status indicators
• Current bar graph, % of CT
• RS485 or RS422 communications
• ModBus™ RTU protocol
• Baud rate up to 19,200 bps
G5
GE Limitamp® Medium Voltage Motor Control
Components
G
Multilin 750/760 Feeder Protection System
Applications
Features
• Management and primary protection of distribution feeders
• Management and backup protection of busses, transformers
and power lines
• Reliable distributed generation interconnection protection
system
Protection and Control
• Complete time, instantaneous & directional phase, neutral,
ground and negative sequence overcurrent
• Time, instantaneous & directional sensitive ground overcurrent
• Voltage restraint overcurrent
• Bus phase and line auxiliary undervoltage
• Bus phase overvoltage
• Neutral overvoltage
• Negative sequence voltage
• Undervoltage automatic restoration
• Bus underfrequency
• Underfrequency automatic restoration
• Automatic bus transfer
• Breaker failure
• Manual close control
• Cold load pickup control
• Power factor control
• 4 shot recloser
• 4 setting groups
• Syncrocheck - V, f, Hz, & dead-source
• 20 Programmable logic inputs
Key Benefits
• Unique built-in control features – comprehensive feeder
protection plus automatic Transfer Scheme, Under Voltage
and Under Frequency auto-restore
• Best in class man machine interface (MMI) – large backlit
display with 40 characters to view relay information and
settings in direct sunlight, full numerical keypad, and setpoint navigation keys.
• Accurate metering under sever system disturbances –
tracks power system frequency and adjusts sampling rate
accordingly
• Improve uptime of auxiliary equipment – through I/O monitoring
• Reduce troubleshooting time and maintenance costs –
IRIGB time synchronization, event reports, waveform capture,
data logger
• Minimize replacement time – draw-out construction
• Simplify testing – built-in simulation features
• Cost Effective Access information – via Modbus RTU and
DNP 3.0 Level 2 protocols, through standard RS232, RS485
& RS422 serial ports, and optional Modbus RTU over TCP/IP
through embedded Ethernet Port to connect to 10MB
Ethernet local or wide area networks
• Complete asset monitoring – analog I/O full metering
including demand & energy
• Follow technology evolution – flash memory for product
field upgrade
• Long lasting life – when exposed to chemically corrosive
and humid environments with optional conformal coating
G6
Monitoring and Metering
• Fault locator, record of last 10
• Breaker operation & trip failure
• VT Failure
• Power factor – two independent stages
• Analog input – level and rate
• Total breaker arcing current
• Event recorder
• Oscillography and Data Logger
• Metering: V I Hz W var VA PF
• Demand: Ia , Ib , Ic , MW, Mvar, MVA
User Interface
• Front Panel LEDs, full key pad, and backlit LCD display
• RS232, RS485 and RS422 ports - up to 19,200 bps
• Ethernet port – 10Mbs
• Multiple protocols – ModBus™ RTU, ModBus™ RTU TCP/IP,
DNP 3.0 Level 2
• Includes EnerVista software
GE Limitamp® Medium Voltage Motor Control
Components
Multilin LM10 Motor Protection System
G
Applications
Features
• Ideally suited for motor control center applications
• Low voltage motors up to 500 hp
• Motor types: full voltage reversing and non-reversing; reversing; two speed one and two windings; custom motor types
Protection and Control
• Overcurrent, current unbalance, ground fault, overvoltage/
undervoltage
• Jam, stall, load loss
• Power loss restart
• Two speed motor protection
• 6 digital inputs, 4 relay outputs
Key Benefits
• Small footprint and compact design – fits into standard
Motor Control Center “buckets”
• Easy to use – preconfigured motor setting
• Modular design – pick and choose the desired components
• PLC, SCADA, and DCS Interface – DeviceNet open protocol
standard
• Easy installation – matched CTs; panel or chassis mount
• Programmed through EnerVista Launchpad
Monitoring and Metering
• Phase current, ground current, voltage, kW, power factor,
average current, current unbalance
• Trip history and maintenance information – last 10 fault
history report
• Elapsed motor hours
User Interface
• DeviceNet open protocol
• RS232 direct PC connection
• Optional programmable display unit
• Spanish language option
• Passcode protection
G7
GE Limitamp® Medium Voltage Motor Control
Components
G
PQM II Power Quality Metering System
Applications
• Metering of distribution feeders, transformers, generators,
capacitor banks and motors
• Medium and low voltage systems
• Commercial, industrial, utility
• Flexible control for demand load shedding, power factor, etc.
User Interfaces
• Front RS232 serial port (1,200 to 19,200 bps)
• Two rear RS485 serial ports with ModBus and DNP 3.0 protocol
• Ethernet connectivity provided by MultiNet
• EnerVista software is provided for setup and monitoring
functions
• External dial-in modem capabilities
Key Benefits
• Power quality metering with waveform capture and historical data logging
• Easy to program and use with keypad and large illuminated
40 character display
• Multiple communication port for integration with DCS and
SCADA systems
• Supports DNP 3.0 and Modbus protocols
• Digital and analog I/Os for control and alarms
• Voltage disturbance recording capability for electrical sag
and swell events.
Features
Protection and Control
• A V W var VA varh Wh PF Hz unbalance
• A W var VA demand
• Load shedding
• Power factor control
• Pulse input totalizing
G8
Monitoring and Metering
• Ia Ib Ic In
• Va Vb Vc Vab Vbc Vca
• V I unbalance
• True PF crest and K factor
• Hz W var VA
• Wh varh VAh W cost
• Demand: A W var VA
• Harmonic analysis through 63rd with THD and TIF
• Event recorder – 150 events
• Waveform capture
• Data logger – 98,000 events
• Voltage Disturbance Recorder (VDR) -500 events
GE Limitamp® Medium Voltage Motor Control
Components
Multilin SPM Synchronous Motor Protection System
Applications
• Starting, synchronizing and protection of collector-ring or
brushless-type synchronous motors
Key Benefits
• Complete asset monitoring – field winding temperature
and statistical data
• Improve uptime of auxiliary equipment – through I/O
monitoring
• Access to information – RS485 Communications port and
Modbus RTU Protocol
G
Monitoring and Metering
• Motor power factor
• DC amps and voltage
• AC current
• Exciter field resistance
• Motor run time, number and type of trips
• Number and type of trips
User Interface
• RS485 serial port
Features
Protection and Control
• Field application
• DC field current loss, exciter current loss, DC field voltage
check
• PF regulation, reluctance torque synchronizing
• Protects motor during start up and in the event of asynchronous operation
• Squirrel cage winding overheating protection
• Automatic phase rotation correction
• Auto-loading and incomplete sequence
• Regulator tuning mode
• True RMS metering with DFT filtering
• Optional power factor regulator with five adjustable set points
• Power factor & pull out protection (optional)
• Speed dependent squirrel cage overload protection
• Frequent start protection
G9
GE Limitamp® Medium Voltage Motor Control
Components
G
Universal Relay™ Family
Applications
Features
• All power generation, transmission, distribution, motor
protection applications
• Generator, Differential, Phase, Transformer, Bus, Feeder,
Breaker and Motor protection, monitoring, metering and
control
• Utility substation and industrial plant automation
• Digital Fault Recorder and Sequence of Event
• Predictive maintenance through data analysis and trending
Protection and Control
• Extensive protection and control capabilities
• Up to 96 digital input and 64 digital outputs
• Solid state output modules for fast tripping
• Transducer I/Os (RTD, dcmA)
• Dual power supply (option)
Key Benefits
• Application flexibility – multiple I/O options, programmable
logic (FlexLogic™), modularity, customize to specific
requirements
• Fewer external devices required – multifunction device that
integrates protection and control functions, programmable
pushbuttons and status LEDS, and communication interfaces
• Modular construction – common hardware, reduced stock
of spare parts, plug & play modules for maintenance cost
savings and simplification
• Common platform – reduced training time and drafting costs
• Use high speed communications to reduce wiring and
installation costs – exchange inputs and outputs between
relays to achieve relay-to-relay interaction
• Cost effective and flexible access to information – multiple
communication options and protocols
• Reduce system event analyzing time and cost – sequence
of event reports, oscillography, datalogging, IRIG-B time
synchronization
• Long lasting life – when exposed to chemically corrosive
and humid environments with optional conformal coating
• Enhanced CT/VT Diagnostics – enhanced CT/VT module
diagnostics verifying the integrity of the analog signals
using an advanced algorithm ensuring reliable performance
of the relay
G10
Communications
• Networking options – Ethernet-fiber (optional redundancy),
RS422, RS485, G.703, C37.94
• Multiple protocols – IEC 61850, DNP 3.0 Level 2, Modbus
RTU, Modbus TCP/IP, IEC 60870-5-104, Ethernet Global
Data (EGD)
• Direct I/O – exchange of binary data between URs
Monitoring and Metering
• Synchrophasors
• Oscillography – up to 64 records
• Event Recorder – 1024 time tagged events, with 0.5ms
scan of digital inputs
• DataLogger – up to 16 channels with user selectable
sampling rate
• Fault locator and user programmable fault reports
• Breaker condition monitoring including breaker arcing
current (I2t)
• Metering – current, voltage, power, power factor, frequency,
current harmonics
User Interface and Programming
• Front panel display and keypad for local access; RS232
port for local PC access
• User programmable local display, LEDs and pushbuttons
• Customize protection and control functions with
FlexLogic™, FlexCurves™, and FlexElements™
• Includes EnerVista LaunchPad – Simple relay setup and
programming
• Multi-language – French, Chinese, Russian option
GE Limitamp® Medium Voltage Motor Control
Components
F60 Feeder Protection System
G
Applications
Features
• Primary protection for distribution feeders
• Stand-alone or component in automated substation
control system
• Interlocking scheme on distribution level by means of
Remote I/O features
• Throw over schemes (bus transfer scheme)
• Load shedding scheme based on frequency elements
Protection and Control
• Downed conductor detection – high impedance faults
• Phase, neutral, ground or sensitive ground and negative
sequence IOCs and TOCs with directional control
• Sensitive directional power
• Breaker failure
• Breaker control
• Four-shot autorecloser with synchronism check
• Up to 80 digital input and 56 digital outputs
• Transducer I/Os (RTD, dcmA)
• Wattmetric zero-sequence directional function
Key Benefits
• Unparalleled security/safety – downed conductor detection
• Reliable Distributed Generation interconnection protection
• Dependable and secure – performance backed up by
many years of field experience
• Cost effective and flexible access to information – multiple
communication options and protocols
• Breaker monitoring – monitor breaker conditioning
through analog I/O, rich metering, breaking arcing current,
and trip counters
• Use high speed communications to reduce wiring and
installation costs – exchange inputs and outputs between
relays to achieve relay-to-relay interaction
• Reduce installation space requirements through compact
design – multifunction device that integrates protection
and control functions, programmable pushbuttons and
status LEDS, and communication interfaces
• Maintenance cost savings and simplification – modular
construction, common hardware, reduced stock of spare
parts, plug & play modules
• Application flexibility – multiple I/O options, programmable
logic (FlexLogic™), modularity, customize to specific
requirements
• Reduce system event analyzing time and cost – sequence
of event reports, oscillography, datalogging, IRIG-B time
synchronization
• Embedded IEC 61850 Protocol – no external protocol
converter required
Communications
• Networking options – Ethernet-fiber (optional redundancy),
RS485, RS422, G.703, C37.94
• Multiple protocols – IEC 61850, DNP 3.0 Level 2, Modbus RTU,
Modbus TCP/IP, IEC 60870-5-104, Ethernet Global Data (EGD)
• Direct exchange of Inputs/Outputs – exchange of binary
data between URs
Monitoring and Metering
• Metering – current, voltage, power, energy, frequency,
voltage and current harmonics, demand (current, power)
• Oscillography – 64 samples/cycle, up to 64 records
• Event Recorder – 1024 time tagged events, with 0.5ms
scan of digital inputs
• DataLogger – up to 16 channels with user selectable
sampling rate
• Fault Locator
User Interfaces and Programming
• Front panel display and keypad for local direct access,
with an RS232 port for local PC access
• User programmable local display, LEDs and pushbuttons
• Customize protection and control functions with
FlexLogic™ FlexCurves™, and FlexElements™
• Includes EnerVista LaunchPad - Simple relay setup and
programming
• Multi-language support – French, Chinese, Russian option
• Order must include complete catalog number of required
device
G11
GE Limitamp® Medium Voltage Motor Control
Components
G
M60 Motor Protection System
Applications
Features
• Any size of AC induction or synchronous motor
• Stand-alone or component in automated control system
Protection and Control
• Phase and neutral directional overcurrent
• Thermal overload, overvoltage, undervoltage and reverse
phase sequence
• Stator-restrained differential
• VT fuse failure
• Breaker failure
• Stator differential
• Sensitive directional power – reverse and low forward power
• Current unbalance
• Configurable TOC curves with FlexCurves™
• Thermal model RTD bias function
• Up to 80 digital input and 56 digital outputs
• Transducer I/Os (RTD, dcmA)
Key Benefits
• Best in class human machine interface (HMI) – view relay
information and settings, full numerical keypad, and setpoint
navigation keys.
• Unique protection features – comprehensive motor protection
with voltage dependant overload curves
• Advanced thermal model – including multiple RTD inputs
for stator thermal protection
• Integrated monitoring functions – vibration, bearing temperature, analog !/O, full metering
• Cost effective and flexible access to information – multiple
communication options and protocols
• Use high speed communications to reduce wiring and
installation costs – exchange inputs and outputs between
relays to achieve relay-to-relay interaction
• Reduce installation space requirements through compact
design – multifunction device that integrates protection
and control functions, programmable pushbuttons and
status LEDS, and communication interfaces
• Maintenance cost savings and simplification – modular
construction, common hardware, reduced stock of spare
parts, plug & play modules
• Application flexibility – multiple I/O options, programmable
logic (FlexLogic™), modularity, customize to specific
requirements
• Reduce system event analyzing time and cost – Sequence
of event reports, oscillography, datalogging, IRIG-B time
synchronization
• Embedded IEC 61850 Protocol - no external protocol
converter required
Communications
• Networking options – Ethernet-fiber (optional redundancy),
RS485, RS422, G.703, C37.94
• Multiple protocols – IEC 61850, DNP 3.0 Level 2, Modbus
RTU, Modbus TCP/IP, IEC 60870-5-104, Ethernet Global
Data (EGD)
• Direct I/O – exchange of binary data between URs
Monitoring and Metering
• Metering – current, voltage, power, energy, frequency
• Transducer I/O to monitor condition of breaker and motor
auxiliary systems
• Oscillography – 64 samples/cycle, up to 64 records
• Event Recorder – 1024 time tagged events, with 0.5ms
scan of digital inputs
• DataLogger – up to 16 channels with user selectable
sampling rate
• User programmable fault reports
User Interface and Programming
• Front panel display and keypad for local direct access,
with an RS232 port for local PC access
• User programmable local display, LEDs and pushbuttons
• Customize protection and control functions with
FlexLogic™, FlexCurves™, and FlexElements™
• Includes EnerVista LaunchPad – simple relay setup and
programming
• Multi-language support – French, Chinese, Russian options
G12
GE Limitamp® Medium Voltage Motor Control
Components
Model GFM Ground Fault System
G
UL-listed File number E110395
Description
Features
These Class 1 model GFM ground fault protection systems
are designed to minimize damage or loss to equipment
caused by destructive arcing ground faults. This GFM system
is designed for all polyphase applications and is ideally suited
for motor control, motor control centers and high-voltage
starters. Systems can be wye or delta, grounded or resistance
grounded. When the ground fault current exceeds a preselected
condition (current only, or current and time settings), the relay
trips. The relay contacts can be connected in the control circuit
of a motor starter, to the shunt trip of a circuit breaker or
similar disconnecting or alarm devices. The system has an
inverse time characteristic to prevent nuisance tripping. The
relay tripping current value is field adjustable over the trip
current range of the sensor. The adjustable trip time delay
relay, when specified, is field settable up to 36 cycles.
• Main contact rated 30 amperes, 277 volts AC
• Auxiliary contacts rated 10 amperes continuous, 23 amperes
inrush, 120 volts AC
• Self powered
• Temperature range: -30° C to 75° C
• Positive “ON” (green) and “OFF” (red) condition indication,
manual reset
• Instantaneous only (GFM-353) standard
• Optional time delay from instantaneous to 36 cycles
(GFM-363)
Sensors
Model number Trip current Window size
GFM 250
3.5 to 11
2.5”
GFM 462
4 to 12
4.62”
G13
GE Limitamp® Medium Voltage Motor Control
Components
G
LPVRB-120 Phase Voltage Relay
Description
Features
The Model LPVRB-120 is designed to protect 3-phase loads
from damaging power conditions. Its wide operating range
combined with UL and CE compliance enables quick access to
domestic and global markets. A unique microcontroller-based
voltage and phase sensing circuit constantly monitors the
three phase voltages to detect harmful power line conditions.
When a harmful condition is detected, the LPVRB-120’s output
relay is deactivated after a specified trip delay. The output
relay reactivates after power line conditions return to an
acceptable level for a specified amount of time (Restart
Delay) or after a manual reset. The trip and restart delays
prevent nuisance tripping due to rapidly fluctuating power
line conditions. An adjustment is provided to set the nominal
line voltage from 95-120 VAC. Other adjustments include a
1-30 second trip delay, a 1-500 second restart delay, and a
2-8% voltage unbalance trip point adjustment. Two LEDs
indicate the status of the Model LPVRB-120; Run Light,
Under Voltage, Over Voltage, Phasing Fault/ Reverse Phase,
and Manual Reset. The LPVRB-120 ships with a jumper
installed for automatic restart. A connector with two 12"
wires is included for manual reset switch.
• Four adjustment pots provide versatility for all kinds of
applications
• Range from 95-120 VAC 50/60 Hz provides the versatility
needed to handle global applications
• Diagnostic LEDs indicate trip status and provide simple
troubleshooting
• Microcontroller based circuitry provides better accuracy
and higher reliability than analog designs
• Transient protected to meet IEEE and IEC standards and
operate under tough conditions
• Will detect single phase condition regardless of regenerated
voltages
• Compact design
• UL and cUL listed
• CE compliant
• Finger safe terminals
• 5 year warranty
• Made in USA
• Standard surface or DIN rail mount
• Standard 1-500 sec. variable restart delay
• Standard 2-8% variable voltage unbalance
• Standard 1-30 sec. variable trip delay
• One 10 amp general purpose Form C relay
• Optional manual reset
Key Benefits
Protects 3-Phase motors from:
• Loss of any Phase
• Low Voltage
• High Voltage
• Voltage Unbalance
• Phase Reversal
• Rapid Cycling
G14
GE Limitamp® Medium Voltage Motor Control
Components
FT Test Switch
G
Application
The ITI Type Test Switches and Test Plugs provide a safe,
simple, fast and reliable method to isolate and service
installed equipment.
Key Benefits
The FT Switches and FT Test Plugs have all the features necessary for applications involving the measurement of individual
currents and voltages to facilitate testing of substation
instrumentation and protection devices from the front of the
panel. The make-before-break current short circuit feature
also allows test personnel to test quickly and safely.
The FT Switch is built with a maximum of ten individual poles
or switch units. The switches can be assembled in a variety
of different arrangements to match customer requirements.
ITI FT Test plugs are used in conjunction with the FT Switches
to enable easy measurement, calibration, verification or
maintenance of relay, meters and instruments.
Voltage measurements can also be made directly on the FT
Switch without disturbing existing connections. There is a
test clip provision located on the top of each pole that
allows connection with standard spring clip test leads.
With the cover in place, a meter type seal can be placed
through either of the cover studs of the FT Switch to prevent
unauthorized access to the switch. As an additional feature,
a clear cover is available that can be installed and locked
with the switchblades in the open or closed position.
G15
GE Limitamp® Medium Voltage Motor Control
Components
G
CR120B Machine Tool and Industrial Relays
Description
Coil data
The CR120B and CR120BL Series A multi-circuit industrial relays
are designed to meet most panel application requirements.
They are available as standard, latched or time-delay relays.
Coil
AC relay coil
AC unlatch coil
DC relay coil
All forms of the relay mount on the same base and in the
same small panel-mounting area. Relays may be arranged
in any configuration or modified on a panel without altering
the mounting area.
Inrush VA
120
31
235
Sealed VA
15
15
2.8
Sealed watts
7
9.2
2.8
Coil data
Volts
60 Hz 115-120, 230, 460
Features
• Unique bifurcated contacts assure positive make at all voltages and give excellent fidelity, even in harsh environments.
• Transparent Lexan® contact cartridges allow inspection of
contacts
• Convertible contacts allow conversion from normally open
to normally closed or vice versa – just change the terminal
screws and invert the contact module
• Coil can be changed quickly and without removing any
screws
Latch Attachment
The latch attachment mounts on any standard CR120B
relay in the same manner as a deck adder.
G16
DC
24, 48, 125
Contact ratings
Max.
Type of Max. AC continuous
contacts voltage rating
amperes
Maximum AC
volt-ampere
rating
Make Break
Maximum
AC rating
amperes
Make Break
Maximum
DC rating
amperes
125V 250V
Maximum DC
volt-ampere
rating
300V or less
Inst.1
600
10
7200
720
60
6
1.1
0.55
138
Delay
600
5
3600
360
30
3
0.5
—
—
1 Use for CR120B contact rating.
GE Limitamp® Medium Voltage Motor Control
Components
CR104P Pilot Devices
G
Description
Type
Nameplates with chrome-plated octagonal rings project an
attractive, quality appearance. Positive-feel selector switches
give a quality touch in all illuminated, solid-color, springreturn and maintained units.
Full voltage
X
(120 Volts AC)
X
Transformer
(6 Volts AC
Secondary)
X
X
Neon
X
N/A
LED
(Transformer
type only)
X
X
Standard and illuminated push buttons and selector switches
are available with key or conventional operation. The CR104P
push button line also includes press-to-test and standard
indicating lights, mushroom-head, joystick, push-pull and
push-push operators.
Standard Push-to-test Bulb
Color
Red
#120PSB
Green
Amber
Blue
#755
White
Clear
Red
White
Neon
Amber
Clear
Red
Green
LED (6 volt)
Blue
Amber
Application
These pilot devices are specially adapted to machine-tool
service or any application where oil or coolant is present.
The convenient one-hole mounting makes this line suitable
for general purpose use in equipment of all kinds where
panel mounting is possible. This line is ideal for applications
where oil tightness, watertightness and long life are essential.
All units are suitable for use in Type 1, 3, 3R, 4, 12 and 13
environments when mounted in enclosures rated for those
same applications. (CR104PTP units suitable for Type 1, 12
and 13 only.)
Features
• Ease of assembly – One-screw contact block mounting.
Octagonal ring provides ease in front panel mounting and
enclosure applications.
• Greater torque – Due to the eight-sided ring design,
greater torque can be developed during assembly and
installation to provide oil tightness.
• Stocking inventories reduced – Forms may be furnished as
complete units or as components, allowing building-block
construction from a minimum of stock.
• Color convertible – Colored knobs and caps are available in
kit form for easy field conversion.
Contact Ratings
AC ratings, NEMA A600 heavy pilot duty
Maximum AC
600
Continuous current AC voltamperes 50/60 Hz1
amperes
Make
Break
10
7200
720
1 Maximum make and break currents are 60 and 6 amperes, respectively,
for voltages of 120 and below.
DC ratings, NEMA P600
Maximum make or break amperes
125 volts
250 volts
600 volts
1.1
0.55
0.2
CR104P Pilot Lights
Pilot lights match appearance of switches above. Standard
applications use full-voltage or transformer-type lights.
Optional nameplates match those used with switches; neon
lights are available (with limited lens colors).
Typical pilot lights
Function
Full voltage
Transformer
Push-to-test
Device used
CR104P with 120-volt, 10,000-hour lamp
CR104P with 6-volt, 20,000-hour lamp
CR104P, full-voltage or transformer-type
Red
On, Fast, Forward, Up
Colors available Amber
Down, Reverse, Slow
Green
Stopped, Ready
G17
GE Limitamp® Medium Voltage Motor Control
Components
G
C2000 RL4 Control Relays G3
Control Relay catalog numbers are shown in the shaded area
in the Control Relay Selection and Data table. To complete
the catalog number, replace the asterisk (*) with the appropriate digit from the shaded area in the Coil Selection table.
Additional coil information is shown in the Coil Data table.
Control Relay Selection and Data
Contact Arrangement
4NO-0NC 3NO-1NC 2NO-2NC 0NO-4NC
RL4RA040T* RL4RA031T* RL4RA022T* RL4RA004T*
RL4RD040T* RL4RD031T* RL4RD022T* RL4RD004T*
AC Control Relays
DC Control Relays
Maximum
4
4
4
4
Aux. Contacts
Aux.
Maximum
Contacts
4 Front-Mount or 1 Side-Moubnt on each side
Aux.
Configuration
Contact Rating
A600 P600
Contact Rating
A600
7200VA/60A 138VA
720VA/6A
138VA
Max. Operating Voltage
600 VAC
600 VDC
Note: For DC ratings at 300 Volts or less, the make and break ratings shall be obtained
by dividing the voltampere rating by the application voltage but shall not exceed the
continuous carrying current.
The DC rating shown in the above table shall not be exceeded when applied to control
circuit devices.
A2
14
24
34
44
RL4RA040T*
RL4RD040T*
G18
A1
A2
13NO 21NC 33NO 43NO
14
22
34
Coil Suffix
—
12
24
—
48
—
125
—
—
—
250
—
—
—
1
B
D
F
G
J
K
L
N
S
T
U
W
Y
AC Voltage
Max. VA/Amps Breaking
13NO 23NO 33NO 43NO
DC Voltage
5A
Max. VA/Amps Making
A1
AC Voltage
60 Hz
50 Hz
24
24
—
—
—
—
48
42
—
—
120
110
—
—
208
—
277
220/230
240
—
—
—
480
380/400
—
415
600
500
Coil Data
P600
Continous Thermal Current 10A
Coil Selection
44
RL4RA031T*
RL4RD031T*
A1
A2
13NO 21NC 33NC 43NO
14
22
32
44
RL4RA022T*
RL4RD022T*
A1
A2
11NC 21NC 33NC 41NC
12
22
32
42
RL4RA004T*
RL4RD004T*
DC Voltage
Burden
Inrush
Holding
Pick-up Voltage (% Of Coil Volts)
45 VA
6 VA
85-110
5.5 W
5.5 W
80-110
Drop-Out Voltage (% Of Coil Volts)
40-55
20-40
6-25
8-20
35-65
40-45
6-13
6-13
30-60
30-60
9000
1200
3600
1200
Switching Delay (ms)
Switching Delay On
Coil Voltage at +10% to-20%
Coil Voltage at Rated Value
Switching Delay Off
Coil Voltage at +10% to-20%
Coil Voltage at Rated Value
Maximum Operations per Hour
No Load
Rated Load
GE Limitamp® Medium Voltage Motor Control
Components
Motor Auto-Restart Relay
Description
The DIE#SP-0330 motor restart control relay is an 11 pin
plug-in relay (socket # CIC#RB11) that provides automatic
restart of a motor following a momentary interruption of
control power. Since the control power is derived from the
power bus, the relay may be used to monitor interruptions
on the power system.
The relay consists of two adjustable timing functions. The first
timer, called the UV timer (adjustable from 0.2 - 6 seconds)
limits the time the control power may be interrupted for an
auto-restart to occur. If the interruption lasts longer than the
timer setting, the motor will not restart on restoration of power
and a manual restart will be required. If power is restored
before the timer times out, then the motor will restart automatically after a second timer delay.
G
The following diagram is a simplified elementary showing
relay wiring:
120VAC Control
120VAC Control
UVAR
(8) PWR (2)
(5)
OL Stop PB
M
MX
(6)
Start PB
MX
UV Delay: 2 Secs
Restart Timer Delay: 1 Sec
M
The second timer, called the restart delay timer (adjustable
from 0.2 - 60 seconds) is a delay on restart following
restoration of control power. This second timer can be set to
allow time for rotor currents to decay following an interruption
of power, so that a motor (particularly a synchronous motor)
is not re-energized out of phase with field or squirrel-cage
current present. Motor auto-restart relays in a group of motor
controllers can be independently set to allow for a staggered
restart of motors over a period of time to minimize impact to
the power system on restoration of power.
Please note the following restrictions:
• Overload contact must be normally closed, so Multilin
relays must have trip contact set “non-failsafe”.
• Place no contacts of any kind between UVAR (6) and MX
relay coil.
• Use this relay only when momentary start and stop pushbuttons are used. Do not use with maintained contact
start- stop schemes.
The relay also has the feature of distinguishing between
control power interruptions and “STOP” pushbutton operations.
Following a “STOP” pushbutton operation, the relay is lockedopen and inadvertent spontaneous motor starts will not occur
due to rapid momentary “STOP” pushbutton operations or
control power disturbances.
Nomenclature
UVAR - TIME DELAY UNDERVOLTAGE MOTOR AUTO-RESTART RELAY
M - MAIN MOTOR CONTACTOR
MX - CONTROL RELAY
OL - OVERLOAD OR OTHER PROTECTIVE RELAY
PB - MANUAL PUSHBUTTON
G19
GE Limitamp® Medium Voltage Motor Control
Components
G
Contactor Economizing Module
Description
The Contactor Economizing Module (CEM) is a solid state
encapsulated module that is designed to apply the proper
voltage to pick-up and seal close GE CR193B, C, D and E
medium voltage vacuum contactors. The CEM performs the
same function as the older CTM, including the anti-pump
function, except it utilizes phase control SCRs to control output
voltage instead of a series capacitor.
The CEM is powered by 115 VAC nominal AC power, 50/60
Hz. Incoming power is to be applied to terminals “1” and “2”
of the module. Use a separate contact in series with the AC
power to switch the CEM (and contactor) on and off.
Start-Stop
Control
MX
CEM
MX
1
2
MX
3
M
4
Supp
G20
The CEM DC output terminals to the contactor coil are “3” (-)
and “4” (+). It is customary to place an additional series
switching contact directly in the coil circuit to minimize the
contactor drop-out time. When the DC coil current is interrupted by this contact, the L/R coil time constant is greatly
reduced, shortening the drop out time of the contactor to
about 50 milliseconds. If this additional switching contact is
omitted, the contactor drop out time will be as much as 500
milliseconds. It is also recommended to place RC suppression
(SUPP, 0.1 MFD capacitor in series with 100 Ω resistor), cat.
no. 302A3847P1, directly across the contactor coil terminals
to reduce inductive “kick-back” voltages.
The CEM functions as follows: For one second after application
of 115 VAC to terminals “1” and “2”, the output voltage between
terminals “3” and “4” is in the range of 100 to 110 VDC when
the contactor coil is connected. After one second, the voltage
is reduced to 20 to 25 VDC for as long as AC power is applied.
When AC power is removed, the DC voltage is removed from
the contactor coil and the contactor drops out. The cycle is
repeated when AC power is reapplied to the CEM. The purpose
is to provide the high coil voltage for a long enough period
of time necessary to pick up the contactor (1 second) and
then transition to a much lower coil voltage to economically
maintain the contactor in a sealed closed condition. This
reduction in voltage reduces power consumption and greatly
reduces temperature rises in the coil.
GE Limitamp® Medium Voltage Motor Control
Components
Adjustable Power-Dip Ride-Through
G
Description
The power-dip ride-through feature is available for critical
process applications where forced motor shutdowns are
very disruptive and where power system outages are
expected to last less than 20 cycles (333 milliseconds).
If a loss of power occurs while the main contactor M is
closed (see diagram) relays UV and MX transition to the deenergized state. The normally-closed contact of UV and the
normally-open contact of MX in the coil circuit overlap as
they change state, thus avoiding an interruption of the
decaying coil current. The power to the main contactor coil
is removed but stored energy in the magnetic armature
keeps the contactor closed. After 20 cycles of outage (or less,
depending on MX relay time setting), MX (T.O.) contacts time
open and interrupt the decaying DC coil circuit, causing the
contactor to immediately open. The contactor will now remain
open until manually restarted by the START pushbutton.
If power is restored before the MX (T.O.) contacts time open,
the MX relay recloses to re-energize the main contactor coil,
maintaining the contactor tips closed throughout the outage
interval. Use 125VDC MX coil for 115-120 VAC control power
(60hz); or 110 VDC MX coil for 105-110 VAC control power
(50hz).
For a normal STOP operation (using the STOP pushbutton), it
is desired to bypass delayed contactor drop out. When the
stop pushbutton is pressed, relay MX normally-open contacts
open to remove power to both the AC and DC sides of the
Contactor Economizing Module (CEM). (The CEM provides,
among other things, the rectification of AC voltage to DC for
powering the main contactor coil).
115VAC
Control Power
115VAC
Control Power
CEM
MX
1
2
UV
MX
3
T.O.
MX
4
(+)
M
UV
*OL, etc. Stop PB
Filter
UV
MX
Start PB
MX +
Rect
M
MX
C
-
TDAD
0.3 Sec
CAUTION: Overload and other permissive interlocks such as
Multilin trip contacts must be non-failsafe. That is, they must
not open on loss of control voltage.
NOMENCLATURE
C – 10 MFD CAPACITOR (Cat. NKE#18F232)
CEM - CONTACTOR ECONOMIZING MODULE
FILTER - R-C FILTER (Cat. 302A3847P1).
M - MAIN CONTACTOR (Types CR193 B, C, D&E)
MX – CONTROL RELAY W/TIMING HEAD
OL’S - PROTECTIVE RELAY CONTACTS
PB - PUSHBUTTON
RECT - RECTIFIER (Cat. 169B7656G2)
TDAD - TIME DELAY DE-ENERGIZATION
T.O. - TIME OPENING
UV – UNDERVOLTAGE RELAY (Cat. RL4RA22TJ)
Mounting means for 10 MFD capacitor – 129B8150G1
G21
GE Limitamp® Medium Voltage Motor Control
Components
G
TPI, CPI & TSW
Description
Test Power Interlocks (TPI) and Control Power Interlocks (CPI)
are standard. The function of the CPI contacts is to disconnect
the secondary of the internal control power transformer
before the main isolation switch can be operated. This is
important because the isolation switch is rated for non-load
break duty only, and is tested to switch transformer-magnetizing current only. The TPI contacts function to transfer
control power from the internal control power transformer
(when the isolation switch handle is in the ON position), to
external test power (when the switch handle is in the OFF
position) and to prevent backfeeding the control power
transformer from test power.
TSW is a selector switch that is provided as standard to switch
from internal control power to remote test power source. It
is provided as a back-up to the TPI contacts to provide an
additional layer of protection against accidental backfeed of
the control power from test power.
G22
CPI contacts are linked to the Handle Latch Release (pusher)
bar on the external handle assembly. In the released state
(pusher not depressed) the CPI contacts are in the CLOSED
state and the ON-OFF isolation switch handle is locked in
either the ON or OFF position. If the main contactor is open,
the pusher bar may be depressed. Once the pusher bar is
depressed, the CPI contacts change to the OPEN state and the
external ON-OFF handle, that operates the controller isolation
switch, is released.
The TPI contacts are linked to the ON-OFF handle position such
that the TPI contacts change state as the handle position is
changed.
GE Limitamp® Medium Voltage Motor Control
Components
Multilin EB-27 Terminal Blocks
G
Application
EB-27 terminal blocks are used where any permanent or
temporary wiring connections are required, especially if
many wires are involved.
Description
The EB-27 terminal blocks are molded one piece design
available in 4, 6, and 12 points. They are furnished with
washer-less head binding screws (#10-32) for circuit wire
connections. The blocks are supplied with a black marking
strip with white numbers on one side, and white unmarked
on the reverse side for circuit identification. To mount the
terminal block, drill for a No. 10 screw. The board will accommodate No. 18 to No. 10 inclusive wire sizes.
The minimum spacing between the barrier separation is
11/32 inches. The distance between adjacent connection
screws is 5/8 inches.
G23
GE Limitamp® Medium Voltage Motor Control
Components
G
Fixed MV Power Factor Correction Capacitors
Application
Type HWT equipments are suitable for use on indoor or outdoor
primary circuits where small amounts of kVAR are required.
They may be installed at load centers or directly at the
terminals of 2300 and 4000 volt motors. Permissible ambient
temperatures are –40° to +45°C. Discharge resistors in each
capacitor reduce the voltage to 50 volts or less within 5 minutes of de-energization. Type HWT equipments contain less
than three gallons of flammable liquid in a single container
and therefore do not require installation in a vault to meet
the NEC.
Specifications
• Enclosed Indoor Dustproof and Outdoor Weatherproof
• 25-900 kVAR, 60 Hz
• 2400, 4160, 4800 Volts
• 1.0-200 kVAR, 240 Volt
• Line Terminals
Solderless connectors are provided on each phase:
Assembly Connector Size
One unit #10 - #4
Two unit #14 - 1/0
Three unit #6 - 250 kcmil
G24
Fuses
Protection is provided by 50,000 ampere interrupting capacity
current limiting fuses. A pop-up button on the fuse gives
visual indication of a blown fuse. GE recommends the use of
three fuses for the most complete protection against terminal-to-terminal and terminal-to-ground failures on grounded
systems. Two fuses are sufficient to provide protection
against terminal-to-terminal failures on ungrounded systems.
Blown Fuse Lights
Blown fuse lights provide a positive external indication of an
operated fuse. A glowing light makes inspection of capacitors
easy, effective, and safe. A 120 VAC source must be supplied
externally. When ordered with this option, the HWT assembly
is supplied with one light per capacitor.
GE Limitamp® Medium Voltage Motor Control
Components
Polymer Station Arresters
G
Station Class arresters are used in large utility and industrial
substations to protect transformers and other substation
equipment from lighting and switching surge-generated
overvoltages. TRANQUELL® polymer arresters provide both
excellent protective characteristics and temporary overvoltage
capability.
Insulation Characteristics
Rated Creep in. Strike Minimum 1.2 x 50 Minimum Power
Frequency (kV rms)
Voltage (mm)
in. (mm) μs Withstand
(kV rms)
(kV crest)
Wet (10 sec) Dry (1 min)
3
23 (584)
8.9 (225) 120
57
88
6
23 (584)
8.9 (225) 120
57
88
Dimensions, Leakage Distances, Mounting Clearance
& Weights
“X” Overall Height
Mounting Clearance
Weight lbs. (kg)
Rated MCOV in. (mm)
Voltage (kV
NEMA
Eyebolt Leakage Distance Centerline to Center Line NEMA
Eyebolt
(kV
rms) Pad
Terminal Terminal to Base Centerline in. to Ground Pad
Terminal
in. (mm)
(mm)
3
2.55
13.7 (348) 10.2 (259) 23 (584)
12.3 (312)
7.7 (196)
22 (10.0) 20.3 (9.2)
6
5.10
13.7 (348) 10.2 (259) 23 (584)
12.3 (312)
7.7 (196)
23 (10.4) 20.8 (9.4)
G25
GE Limitamp® Medium Voltage Motor Control
Components
G
Protective Capacitors for AC Rotating Machines
Application
Protective capacitors offer surge protection for AC generators,
synchronous condensers and large motors.
DIELEKTROL is the GE non-PCB power capacitor dielectric
system, developed to provide an environmentally acceptable
product with superior performance and reliability. Protective
capacitors contain a film dielectric and hermetically sealed
bushings, which permit mounting of capacitors in an upright
position or on the side. GE surge capacitors protect the
winding insulation by reducing the steepness of wave fronts
applied to or reflected within the machine windings.
Features and Benefits
• Surge protection for AC Generators, synchronous condensers
and large motors
• Time proven GE HAZY film foil dielectric system
• DIELECTROL Non-PCB insulating fluid
• Provides turn-to-turn insulation protection by reducing
steepness of wave fronts applied to or reflected within the
machine
• Used in combination with Tranquell station arresters for
optimum protection
• Protective capacitors contain a film dielectric and hermetically sealed bushings, which permit mounting of capacitors
in an upright position or on the side.
• Altitude: 0 to 18,000 feet
G26
GE Limitamp® Medium Voltage Motor Control
Components
CR151B One Piece Terminal Boards for Control Circuit
G
Application
These molded terminal boards are for use in wiring of control
panels. A write-on strip markable with ink or pencil is included.
Terminal boards may be mounted end-to-end without spacing.
Features
• Electrical rating – 30 amperes, 600 volts
• Rugged material – phenolic
• Number of points per board – 4, 6, 12, or 13
• Mounting – may be mounted end-to-end without spacing
• Terminal identification – 15/32-inch wide marking strip;
markable with ink or pencil
• Wiring – terminals accept wire sizes through AWG # 10
G27
GE Limitamp® Medium Voltage Motor Control
Application Data
Standard Service Conditions
Standards and Codes
Limitamp equipment is designed for the following standard
conditions: Operating ambient temperature -20° C to 40° C.
Storage ambient temperatures -40° C to 70° C; strip heaters
with thermostat control are recommended at 0° C. One heater
per enclosure. Thermostats may control up to 14 heaters.
• Altitude to 3,300 feet above sea level
• Humidity 0 to 90 percent (non-condensing)
Limitamp controllers are designed to meet NEMA Standard
ICS 3, Part 2 for Class E2 Controllers, and UL Standard 347 for
high-voltage industrial control equipment under UL File E57411.
Each UL-listed section includes a UL section nameplate and
each UL-listed motor controller includes a UL controller label.
Additional information can be found in Table A.3.
Seismic Capability
Vacuum Limitamp Controllers can be used in various applications subject to shock and/or vibration. Certain controllers
will withstand forces generated by a Zone 4 earthquake as
defined in 1985 uniform building code for non-essential
equipment when properly anchored at ground level.
For Limitamp control with seismic capability, or other vibrationtype applications, refer your application details to the factory.
Applicable ratings are:
Qualified to IEEE-693-1997 HIGH level with 2.5 amplification
factor
Qualified to IBC-2003
Sds = 2.0g. Ss =300%, Ip = 1.5,
for all z/h in accordance with
ICC-ES-AC156.
GE UL-Listed Vacuum Controllers
A. Full-voltage non-reversing induction motor starters, 24004800 volts, up to 400 amperes rating.
B. CR194 one-high NEMA 1 enclosure, 26W or 34W x 90H x
30D, with stationary mounted vacuum contactor and DC
operating coil. CR194 two-high or one-high NEMA 1 enclosure,
36W or 40W x 90H x 30D, with stationary or drawout
mounted vacuum contactor and DC operating coil.
C. GE Type RA or RB current limiting power fuses.
D. Ambient compensated thermal overload relays (CR324C).
E. Solid state overload (CR324CX).
F. 1200, 2000 or 3000 amp copper main bus.
G. Phase and ground current transformers.
H. Control power transformer with primary and secondary
fuse protection.
Altitude Derating
Vacuum Limitamp Controllers, including power fuses, require
the following derating for use at high altitudes:
For current No derating required up to 6000 feet above
sea level.
Above 6,000 feet, derate by 0.9 percent for
every 1,000 feet above sea level.
For voltage No derating required up to 3,300 feet above
sea level.
Above 3,300 feet, derate by 2 percent for every
1,000 feet above sea level. BIL rating is also
derated by the same percentage.
Approved Components For GE Controllers
A. Any UL-listed low-voltage component
B. Current transformers
C. Control wire, Type MTW, THW, SIS, XHHN
D. Power wire — MV-90 Dry
E. Control power transformers
See Table A.3 for details.
Temperature Derating
Vacuum Limitamp Controllers require the following current
derating for ambient temperature.
• Up to 40° C — No derating
• 40-45° C — Derate 10 percent
• 45-50° C — Derate 20 percent
The standard Limitamp paint system consists of the following
two processes:
Phase I — Cleaning
In a seven-stage spray washer, steel parts are cleaned and
sprayed in controlled cleaning solutions. Cleaned steel parts
enter a drying oven at 300-350° F.
Estimated Heat Loss
The following data can be used for estimating heat loss of
Limitamp controllers at rated load amps. The estimates are
based upon a single full-voltage non-reversing 400 ampere
induction motor controller with basic panel options.
• CR194 Vacuum - 370 watts per contactor
Standard Paint System —
Indoor & Outdoor Equipment
Stage
1 — Cleaning
2 — Rinse
3 — Iron Phosphate
4 — Rinse
5 — Acidated Rinse
6 — Rinse
7 — Deionized Rinse
Temperature
115-120°
105-118°
90-105°
Ambient
Ambient
Ambient
Ambient
Chemical Solution(s)
Ridoline
Bonderite
Bonderite, Soda Ash
None
Parcolene
None
None
H1
H
GE Limitamp® Medium Voltage Motor Control
Application Data
H
The preceding operating parameters have been determined
to produce an Iron Phosphate coating of a minimum of 150
milligrams per square foot to meet MIL Spec. TT-C-490.
Phase II — Painting by electro-static powder process
670-011 ANSI-61 Polyester Finish Paint (Light Gray)
Metal parts will enter a drying oven at 375-400° F and
remain for 20 minutes. The standard color finish is ANSI-61
light gray with a gloss of 60 plus or minus five and a thickness of 2.5 mils. This system will withstand a minimum of
1000 hours salt spray test.
Standard Commercial Tests and Inspections
General
The following summary description defines the standard
factory tests and inspections performed during manufacture
of Limitamp Control. All Limitamp equipment is tested and
inspected for conformance with NEMA ICS 3 part 2 and UL347.
Production tests and inspections encompass the verification
of physical configuration of assembly and workmanship, the
mechanical adjustments of parts and components, and the
sequencing and functional operations of the control systems.
These tests and inspections are performed on manufactured
products to verify conformance of the equipment to a previously
qualified design. The tests do not include type testing or other
destructive tests on equipment to be shipped to a customer.
Any additional factory tests beyond those listed in the following
paragraphs must be referred to the factory to verify availability of test facilities and qualified manpower. Additional testing
beyond the scope of the following standard commercial
tests will affect normal shipment schedules.
Production Tests
The following list of inspection activities shall be performed
to assure proper and correct materials, workmanship and for
any damage conditions in accordance with the manufacturing
documentation and drawings:
• Components, parts and material
• Physical condition of components, parts, wire insulation
• Location and orientation of components and parts
• Finish - plating - painting
• Wire/cable type, size, insulating and clamping support
• Wire terminations, insulation removal and crimping
of terminals
• Tightness of electrical connections and torque of bus
bar bolts
• Wire markers and terminal markers (where specified)
• Labeling of components, parts, etc.
• Tightness torque of assembly bolts and hardware
• Welds (spot only)
• Mechanical clearance
• Electrical clearance (potential hazards)
H2
Mechanical Operation Tests
Mechanical operating tests shall be performed to ensure
proper functioning of operating mechanisms and interlocks.
The operation of shutters, mechanical interlocks, circuitbreaker-door interlocks, operating handles, trip mechanisms,
solenoid armature travels, contact wipes, electro-mechanical
interlocks, physical clearances for mechanical and electrical
isolation including any additional mechanically related
operating functions shall be verified.
Continuity Tests — Control Wiring And Power Cables
The correctness of the individual circuit wiring contained in
each assembly and the assembly wiring interfaces shall be
verified as in accordance with the connection diagram,
wiring table, or elementary drawing. The continuity of each
circuit shall be checked.
Operations Test
All equipment shall be subjected to an operational test. The
test shall verify the functional operation of the control and
power circuits and related components, devices and subassembly-modules under simulated operating conditions
(excluding loading of the power circuits).
a. Devices
All devices, including subassembly-modules, shall be operated,
set and checked for their functional characteristics in accordance with the instructions for each and any additional
characteristic peculiar to the device:
• Pick-up
• Drop-out
• Contact wipe
• Amperes
• In-rush current
• Time-delay
Contactors must pick-up and hold-in at or below the following
percentage of rated coil voltage:
Device Type
DC
AC
DC
DC
Voltage Source
DC
AC
AC with rectifier
AC with rectifier
Pick-up (Percentage)
65
851
70 with holding resistor
70 with holding and pick-up resistor
1 If a CPT is used, apply 90% voltage to transformer primary.
b. Sequence and timing circuits
Assemblies and systems involving sequential operation of
devices and time delays shall be tested to assure that the
devices in the sequence function properly and in the order
intended.
c. Polarity — phase-sensitive circuits
The polarity of direct-current circuits and phase connections
of alternating-current circuits shall be verified by application
of power and measurement of the relative polarities and
phase sequence.
d. Grounding
The grounding circuits and buses shall be verified.
GE Limitamp® Medium Voltage Motor Control
Application Data
High Potential — Insulation Tests
a. Control wiring insulation tests
A dielectric test (hi-pot) shall be performed on circuit wiring
to confirm the insulation resistance to withstand breakdown
to a selected test voltage. The test voltage — amplitude and
waveshape, method of application and duration of time
applied — shall be specified in UL347.
b. Power cable insulation and isolation test
Power cables and buses shall be tested, phase-to-phase and
phase-to-ground for insulation breakdown resistance and
circuit isolation as specified in UL347.
H
Note: These test conditions are as specified for newly constructed equipment and performed in a clean, temperature
and humidity controlled factory environment.
Rated Circuit Voltage
AC or DC
120
140
480/600
2300
5000
7200
High Potential Test
Voltage
1500
1800
2700
7200
13,250
18200
Duration of Test
1 second
1 second
1 second
60 seconds
60 seconds
60 seconds
These test voltages include the standard test voltages:
a. For equipment rated under 600 volts RMS or DC:
2 times rated plus 1000, times 120 percent (for one-second
application).
b. For equipment rated over 600 volts RMS or DC:
2.25 times rated plus 2000 (60 seconds only).
The frequency of the test voltage shall not be less than the
rated frequency of the equipment tested and shall be essentially sinusoidal in wave shape.
Note: Consideration shall be made for low-voltage devices,
semiconductors, meters, instruments, transformers, grounding
circuits, etc., in preparation for the dielectric tests.
Insulation Resistance (Megger) Tests
Insulation resistance tests measure the amount of circuit
resistance to current leakage. This test is performed when
this resistance measurement is desired and so specified.
The test voltage and minimum insulation resistance shall be
selected as specified. Examples of test values are:
a. 500 volts DC with 10 megohms minimum
b. 1000 volts DC with 1 megohm minimum
c. 1000 volts DC with 25 megohms minimum
Desired values must be specified by the customer, as no
NEMA standard defines Megger values for motor controls.
H3
GE Limitamp® Medium Voltage Motor Control
Application Data
H
ANSI Standard Device Function Numbers
Dev. No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
H4
Function
Master Element
Time-Delay Starting or Closing Relay
Checking or Interlocking Relay
Master Contactor
Stopping Device
Starting Circuit Breaker
Anode Circuit Breaker
Control Power Disconnecting Device
Reversing Device
Unit Sequence Switch
(Reserved for future application)
Over-Speed Device
Synchronous-Speed Device
Under-Speed Device
Speed or Frequency Matching Device
(Reserved for future application)
Shunting or Discharge Switch
Accelerating or Decelerating Device
Starting-to-Running Transition Contactor
Electrically Operated Value
Distance Relay
Equalizer Circuit Breaker
Temperature Control Device
(Reserved for future application)
Synchronizing or Synchronism-Check Device
Apparatus Thermal Device
Undervoltage Relay
Flame Detector
Isolating Contactor
Annunciator Relay
Separate Excitation Device
Directional Power Relay
Position Switch
Master Sequence Device
Brush-Operating or Slip-Ring Short-Circuiting Device
Polarity or Polarizing Voltage Device
Undercurrent or Underpower Relay
Bearing Protective Device
Mechanical Condition Monitor
Field Relay
Field Circuit Breaker
Running Circuit Breaker
Manual Transfer or Selector Device
Unit Sequence Starting Relay
Atmospheric Condition Monitor
Reverse-Phase or Phase-Balance Current Relay
Phase-Sequence Voltage Relay
Incomplete Sequence Relay
Machine or Transformer Thermal Relay
Instantaneous Overcurrent or Rate-of-Rise Relay
Dev. No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
Function
AC Time Overcurrent Relay
AC Circuit Breaker
Exciter or DC Generator Relay
(Reserved for future application)
Power Factor Relay
Field Application Relay
Short-Circuiting or Ground Device
Rectification Failure Relay
Overvoltage Relay
Voltage or Current Balance Relay
(Reserved for future application)
Time-Delay Stopping or Opening Relay
Pressure Switch
Ground Protective Relay
Governor
Notching or Jogging Device
AC Directional Overcurrent Relay
Blocking Relay
Permissive Control Device
Rheostat
Level Switch
DC Circuit Breaker
Load-Resistor Contactor
Alarm Relay
Position Changing Mechanism
DC Reclosing Relay
Pulse Transmitter
Phase-Angle Measuring or Out-of-Step Protective Relay
AC Reclosing Relay
Flow Switch
Frequency Relay
DC Overcurrent Relay
Automatic Selective Control or Transfer Relay
Operating Mechanism
Carrier or Pilot-Wire Receiver Relay
Locking-Out Relay
Differential Protective Relay
Auxiliary Motor or Motor Generator
Line Switch
Regulating Device
Voltage Directional Relay
Voltage and Power Directional Relay
Field-Changing Contactor
Tripping or Trip-Free Relay
Used only for specific applications in individual
installations where none of the assigned
numbered functions from 1 to 94 are suitable.
GE Limitamp® Medium Voltage Motor Control
Application Data
Table H.1 Motor Current Limiting Fuse And Current Transformer
Ratio Selection (For Estimating Only) Based Upon 600% Locked
Rotor Current
Typical FLA CT RatioEJ2 Rating Typical FLA CT Ratio EJ2 Rating
Motor
Horsepower
2400 volts
4160 volts
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1200
1250
1500
1750
2000
35
46
57
69
81
92
105
113
123
135
145
155
166
176
186
197
207
218
266
279
50/5
75/5
75/5
100/5
150/5
150/5
150/5
150/5
200/5
200/5
200/5
200/5
300/5
300/5
300/5
300/5
300/5
300/5
400/5
400/5
3R
4R
4R
6R
6R
6R
9R
9R
9R
9R
12R
12R
12R
12R
12R
18R
18R
18R
18R
18R
20
25
33
41
47
54
60
66
73
80
87
93
100
106
113
120
126
133
152
158
187
217
246
25/5
40/5
50/5
75/5
75/5
75/5
75/5
100/5
100/5
100/5
150/5
150/5
150/5
150/5
150/5
150/5
200/5
200/5
200/5
200/5
300/5
300/5
400/5
3R
3R
3R
3R
4R
4R
4R
6R
6R
6R
6R
6R
9R
9R
9R
9R
9R
9R
12R
12R
12R
18R
18R
Table H.4 Fuse Ratings For Transformer Feeders
(For Estimating Only)
2400 volts
Three-Phase
Transformer Full Load Current
9
2.16
15
3.6
30
7.2
45
10.8
75
18
112.5
27
150
36
225
54
300
72
500
120
750
180
1000
240
1500
361
2000
—
2500
—
Fuse
7E
10E
20E
25E
30E
40E
50E
65E
100E
150E
200E
250E
400E
—
—
4160 volts
Full Load Current
1.25
2.08
4.2
6.2
10.4
15.6
20.8
31.3
41.6
69.4
104
139
208
278
347
H
Fuse
5E
7E
15E
15E
25E
30E
40E
50E
50E
80E
125E
150E
250E
300E
400E
Table H.2 CT Ratio Based on Rated Load Current
Current
10-14A
15-24A
25-40A
41-60A
61-80A
81-120A
CT Ratio
20/5
30/5
50/5
75/5
100/5
150/5
Current
121-160A
161-255A
256-355A
356-480A
481-670A
CT Ratio
200/5
300/5
400/5
600/5
800/5
Table H.3 Fuse Selection Based On Full Load Current
FUSE SELECTIONS (Assumes 600% locked rotor)
0-44A
3R
45-62A
4R
63-94A
6R
95-140A
9R
141-184A
12R
185-276A
18R
277-360A
24R
361-408A
P425
409-510A
P550
511-630A
P630
631-800A
P800
H5
GE Limitamp® Medium Voltage Motor Control
Application Data
H
Estimating Power Factor Correction Capacitor Ratings
Table H.5 2400-Volt and 4160-Volt Motors, Enclosure Open —
Including Drip-proof and Splash-proof, GE Type K (NEMA Design
“B”), Normal Starting Torque and Current
Induction
Motor
HP
Rating
100
125
150
200
250
300
350
400
450
500
600
700
800
3600
2
Nominal Motor Speed in RPM
Number of Poles
1800
1200
900
720
4
6
8
10
Induction
Motor HP
Rating
600
12
kVAr
%
%
%
%
%
%
kVAr
kVAr
kVAr
kVAr
kVAr
AR
AR
AR
AR
AR
AR
—
—
25
25
25
50
75
75
100
100
125
150
175
—
—
9
9
9
9
9
9
9
9
9
8
8
25
25
25
50
25
50
50
50
75
100
125
150
150
11
9
9
9
8
8
8
8
8
8
8
8
7
25
25
25
50
50
75
75
100
100
125
175
200
175
12
12
12
12
12
12
12
12
12
12
12
11
10
50
25
50
50
75
100
100
100
125
125
150
150
175
24
13
13
13
13
13
12
12
11
11
11
10
10
25
25
50
75
75
100
100
125
125
150
150
200
225
14
14
14
14
14
14
14
14
14
14
14
14
13
25
50
75
100
100
125
125
150
150
200
200
200
250
20
20
20
20
20
20
19
19
19
19
17
15
15
Induction
Motor
HP
Rating
3600
2
kVAr
100
125
150
200
250
300
350
400
450
500
H6
—
—
25
25
25
50
50
75
75
75
600
12
%
%
%
%
%
%
kVAr
kVAr
kVAr
kVAr
kVAr
AR
AR
AR
AR
AR
AR
—
—
6
6
6
6
6
6
6
6
25
50
25
50
50
50
60
125
125
125
17
17
12
12
11
11
11
11
10
8
—
25
50
75
75
75
75
125
150
175
—
15
15
15
15
13
13
13
13
13
50
50
50
50
75
125
125
150
175
225
22
17
17
17
17
17
17
17
17
17
25
25
50
50
75
100
125
150
200
225
12
12
12
12
12
12
12
12
12
12
50
50
75
100
100
125
150
200
225
225
100
125
150
200
250
300
350
15
15
15
15
15
15
15
15
15
15
Nominal Motor Speed In RPM
Number of Poles
1800
1200
900
720
4
6
8
10
kVAr % AR kVAr % AR kVAr % AR kVAr % AR
—
—
—
— —
—
25
14
25
10
25
11 25
13 25
14
25
8
25
9
50
13 50
14
25
7
50
12 50
13 75
14
25
8
50
12 75
13 75
14
50
8
75
12 100 13 100 14
50
8
75
12 100 12 100 14
Table H.8 2400-Volt and 4160-Volt Motors, Totally Enclosed, Fancooled, GE Type KG (NEMA Design “C”), High-starting Torque,
Normal Starting Current
Induction
Motor HP
Rating
75
100
125
150
200
Table H.6 2400-Volt and 4160-Volt Motors, Totally Enclosed,
Fan-cooled, GE Type K (NEMA design “B”), Normal Starting
Nominal Motor Speed in RPM
Number of Poles
1800
1200
900
720
4
6
8
10
Table H.7 2400-Volt and 4160-Volt Motors, Enclosure Open —
Including Drip-proof And Splash-proof, GE Type KG (NEMA design
“C”), High-starting Torque, Normal Starting Current
Nominal Motor Speed In RPM
Number of Poles
1200
900
720
600
6
8
10
12
kVAr % AR kVAr % AR kVAr % AR kVAr % AR
—
—
—
— —
—
—
—
—
—
—
— 25
12 50
15
25
10
50
17 25
12 50
15
—
—
50
17 50
12 75
15
75
15
50
17 50
12 100 15
GE Limitamp® Medium Voltage Motor Control
Application Data
Estimated Typical Kw Ratings Of Exciters For 60-Hertz Synchronous Motors
When synchronous motors have individual exciters, the kilowatt ratings in Table H.7 represent typical kilowatt ratings for
such exciters.
H
Table H.9 Exciter ratings for synchronous motors, 60 Hz, 1.0 power factor
HP
RPM
200
250
300
350
400
450
500
600
700
800
900
1000
1250
1500
1750
2000
2250
2500
3000
3500
4000
4500
5000
5500
6000
1800
2.0
2.0
2.0
3.0
3.0
3.0
3.0
3.0
4.5
4.5
4.5
4.5
6.5
6.5
9.0
9.0
9.0
13
13
13
17
17
17
21
21
1200
3.0
3.0
3.0
3.0
3.0
4.5
4.5
4.5
4.5
6.5
6.5
6.5
6.5
9.0
9.0
13
13
13
13
17
17
21
21
25
25
900
3.0
3.0
4.5
4.5
4.5
4.5
4.5
6.5
6.5
6.5
6.5
9.0
9.0
9.0
13
13
13
13
17
17
21
21
25
25
33
720
3.0
4.5
4.5
4.5
4.5
4.5
4.5
6.5
6.5
6.5
9.0
9.0
9.0
13
13
13
13
17
17
21
21
21
25
25
33
Exciter Ratings, kW
600
514
450
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
6.5
4.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
9.0
6.5
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
12
13
13
12
13
13
12
13
13
17
13
17
17
17
17
17
17
17
21
17
21
21
21
21
25
21
25
25
25
25
33
33
33
33
33
33
33
33
33
33
400
4.5
6.5
6.5
6.5
6.5
9.0
9.0
9.0
9.0
13
13
13
13
17
17
17
21
21
21
25
33
33
33
33
40
360
4.5
6.5
6.5
6.5
6.5
9.0
9.0
9.0
9.0
13
13
13
13
17
17
17
21
21
21
25
33
33
33
33
40
300
6.5
6.5
6.5
6.5
9.0
9.0
9.0
9.0
13
13
13
13
13
17
17
21
21
21
25
25
33
33
33
33
40
240
6.5
6.5
9.0
9.0
9.0
9.0
9.0
13
13
13
13
13
17
17
21
21
21
25
25
33
33
33
40
40
40
200
6.5
9.0
9.0
9.0
9.0
13
13
13
13
13
17
17
17
21
21
21
25
25
33
33
33
40
40
40
50
180
6.5
9.0
9.0
9.0
13
13
13
13
13
13
17
17
17
21
21
25
25
25
33
33
40
40
40
40
50
400
9.0
9.0
9.0
9.0
13
13
13
13
13
17
17
17
21
21
25
25
33
33
33
40
40
50
50
50
65
360
9.0
9.0
9.0
9.0
13
13
13
13
13
17
17
17
21
21
25
25
33
33
33
40
40
50
50
50
65
300
9.0
9.0
13
13
13
13
13
17
17
17
17
21
21
25
25
33
33
33
40
40
50
50
50
65
65
240
13
13
13
13
13
17
17
17
17
21
21
21
25
25
33
33
33
40
40
50
50
50
65
65
65
200
13
13
13
13
13
17
17
17
17
21
21
21
25
25
33
33
33
40
40
50
50
50
65
65
65
180
13
13
13
17
17
17
17
21
21
21
25
25
33
33
33
40
40
40
50
50
65
65
65
65
85
Table H.10 Exciter ratings for synchronous motors, 60 Hz, 0.8 power factor
HP
RPM
200
250
300
350
400
450
500
600
700
800
900
1000
1250
1500
1750
2000
2250
2500
3000
3500
4000
4500
5000
5500
6000
1800
3.0
3.0
3.0
4.5
4.5
4.5
4.5
6.5
6.5
6.5
6.5
9.0
9.0
13
13
13
13
17
17
21
21
25
33
33
33
1200
4.5
4.5
4.5
4.5
6.5
6.5
6.5
6.5
9.0
9.0
9.0
9.0
13
13
13
17
17
17
21
25
25
33
33
33
40
900
4.5
6.5
6.5
6.5
6.5
6.5
6.5
9.0
9.0
9.0
13
13
13
17
17
17
21
21
25
25
33
33
40
40
40
720
4.5
6.5
6.5
6.5
6.5
9.0
9.0
9.0
9.0
13
13
13
13
17
17
21
21
21
25
33
33
33
40
40
50
Exciter Ratings, kW
600
514
450
6.5
6.5
6.5
6.5
6.5
9.0
6.5
9.0
9.0
9.0
9.0
9.0
9.0
9.0
13
9.0
9.0
13
9.0
9.0
13
13
13
13
13
13
13
13
13
17
13
13
17
13
17
17
17
17
21
17
17
21
21
21
25
21
21
25
25
25
33
25
25
33
33
33
33
33
33
40
33
40
40
40
40
50
40
40
50
50
50
50
50
50
65
H7
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
Limitamp Control Standard Nomenclature
1AM
2AM
A
AIL
AM
AMS
AT
AX
BFI
BFIPS
BFT
BIL
C
CC
CB
CD
CEM
CM
CPD
CPI
CPIX
CPS
CR
CT
CTB
CTD
D
DCCT
DR
DSTB
DSW
EFR
EPM
ETM
EXC
EXC RHEO
F1.F2
FC
FCX
FCY
FDRS
FGRS
FLD
FLR
FLTR
FRP
FS
FS1
FSX
FSW
FTRS
FU
GCT
GF
GFX
AC AMMETER
DC AMMETER
ACCELERATING CONTACTOR
AMBER INDICATING LIGHT
AMMETER
AMMETER SWITCH
AUTOTRANSFORMER
ACCELERATION TIMING RELAY
BLOWN FUSE INDICATOR
BLOWN FUSE INDICATOR POWER SUPPLY
BLOWN FUSE TRIP
BLUE INDICATING LIGHT
CAPACITOR
CLOSING COIL
CIRCUIT BREAKER
CALIFORNIA DISCONNECT
CONTACTOR ECONOMIZING MODULE
FIELD CURRENT CALIBRATION MODULE
CAPACITOR TRIP DEVICE
CONTROL POWER INTERLOCK
AUX. RELAY TO CPI
CONTACTOR POSITION SWITCH
CONTROL RELAY
CURRENT TRANSFORMER
CURRENT TEST BLOCK
CURRENT TRANSDUCER
DIODE
DC CURRENT TRANSFORMER
DIFFERENTIAL RELAY
DISCONNECT TERMINAL BOARD
DISCONNECT SWITCH
EXCITER FIELD RELAY
ELECTRONIC POWER METER
ELAPSED TIME METER
EXCITER
EXCITER THEOSTAT
SYNC. MOTOR FIELD LEADS
FIELD CONTACTOR
AUX. FIELD RELAY
AUX. FIELD RELAY
FIELD DISCHARGE RESISTOR
FIELD GROUND RESISTOR
SYNC. MOTOR FIELD
FIELD LOSS RELAY
FILTER
FIELD RECTIFIER PANEL
FAST SPEED CONTACTOR
FAST SPEED SHORTING CONTACTOR
AUX. RELAY TO FS
FEEDER SWITCH
FIXED TAP RESISTOR
FUSE
GROUND CURRENT TRANSFORMER
GROUND FAULT RELAY
AUX. RELAY TO GF
GIL
GND
GRB
GS
H1.H2.H3
HAM
ISW
ISR
KX
L.O.
L1.L2.L3
LA
LIT
LOR
LSW
M239
M269
M269+
GREEN INDICATING LIGHT
GROUND
GROUND BUS
GROUND SENSOR
OUTGOING TERMINALS TO TRANSFORMER
HEATER AMMETER
ISOLATING SWITCH
INCOMPLETE SEQUENCE RELAY
ANTI-KISS RELAY
LATE OPENING
INCOMING TERMINALS OR AC BUS
LIGHTNING ARRESTOR
LIGHT
LOCKOUT RELAY
LIGHT SWITCH
MULTILIN MOTOR PROTECTION RELAY
MULTILIN MOTOR MANAGEMENT RELAY
MULTILIN MOTOR MANAGEMENT
& COMMUNICATION RELAY
M369
M369 MOTOR MANAGEMENT RELAY
M469
M469 MOTOR MANAGEMENT RELAY
M
MAIN CONTACTOR
MOT
MOTOR
MOV
METAL OXIDE VARISTOR
MR
CONTACTOR HOLDING RESISTOR RELAY
MSW
MAIN DISCONNECT SWITCH
MX
AUX. RELAY TO M
N
NEUTRAL CONTACTOR
NX
AUX. RELAY TO N
OC
OPERATIONS COUNTER
OCR
OVERCURRENT RELAY
OL
OVERLOAD RELAY
OT
OVERTEMPERATURE RELAY
OTX
AUX. RELAY TO OT
PM
POLARITY MARK
PB
PUSH BUTTON
PFC
POWER FACTOR CAPACITOR
PFM
POWER FACTOR METER
PG
PLUG
PHA.PHB.PHC INCOMING LINE TERMINALS
PHF
OPEN PHASE & PHASE SEQUENCE RELAY
PLR
POWER LOSS RELAY
PQM
PQM POWER QUALITY METER
PRO
CT PROTECTOR
PT
POTENTIAL TRANSFORMER
PTB
POTENTIAL TEST BLOCK
R
RUN OR REVERSE CONTACTOR
REC
RECTIFIER
RECP
RECEPTACLE
REV
REVERSE CONTACTOR
RIL
RED INDICATING LIGHT
RM
RECTIFIER CONTACTOR
RS
RESISTOR
RTD
RESISTANCE TEMPERATURE DETECTOR
RX
AUX. RELAY TO R
S
SC
SFC
SH
SHAM
SP HTR
SPR
SR
SR735
SR737
SS
SS1
SSW
SSX
ST
STB
SX
T
TA
TC
TDAD
TDAE
TO
T1.T2.T3
TB
TH
TIE
TM
TPI
TPIX
TPSW
TR
TRP
TST
TSW
UC
UL
UV
UVTR
VCR
VDN
VFC
VFSM
VM
VMS
VRM
VRTD
VT
VTD
WHDM
WHM
WM
WTD
START CONTACTOR
SURGE CAPACITOR
STATIC FIELD CONTACTOR
SHUNT
SPACE HEATER AMMETER
SPACE HEATER
STALL PROTECTIVE RELAY
STARTING REACTOR
MULTILIN FEEDER RELAY
MULTILIN FEEDER RELAY
SLOW SPEED CONTACTOR
SLOW SPEED SHORTING CONTACTOR
SELECTOR SWITCH
AUX. RELAY TO SS
STAB
SHORTING TERMINAL BOARD
AUX. RELAY TO S
TRANSFORMER
AUX. RELAY TO TIMING MODULE
TIME CLOSING
TIME DELAY AFTER DE-ENERGIZATION
TIME DELAY AFTER DE-ENERGIZATION
TIME OPENING
OUTGOING TERMINALS TO MOTOR
TERMINAL BOARD
THERMOSTAT
TIE SWITCH
TIMING MODULE
TEST POWER INTERLOCK
AUX. RELAY TO TPI
TEST POWER SWITCH
TIMING RELAY
TRIP RELAY
THERMOSTAT ON AT OR SR
TEST-NORMAL SELECTOR SWITCH
UNLATCH COIL OR CONTACT
UNLATCH RELAY
UNDERVOLTAGE RELAY
UNDERVOLTAGE TIMING RELAY
VOLTAGE CHECK RELAY
VOLTAGE DIVIDER NETWORK
ELECTRONIC VARIABLE FIELD CONTACTOR
VARIABLE FIELD SUPPLY MODULE
VOLTMETER
VOLTMETER SWITCH
VARMETER
VAR TRANSDUCER
VARIABLE AUTOTRANSFORMER
VOLTAGE TRANSDUCER
WATTHOUR DEMAND METER
WATTHOUR METER
WATTMETER
WATTS TRANSDUCER
This diagram shows starter with the isolating switch in the disconnect position and the test power interlock in the test position.
To test: Handle must be in the disconnect (OFF) position, and test-normal selector switch (located in the low voltage compartment)
must be in the TEST position. Purchaser is to connect his test power to the proper terminals and note that the control circuit is not
grounded when disconnects are open. Be sure to turn the test-normal switch to NORMAL before moving the disconnect handle to
the ON position.
CPI — Opens only when CPI release on isolating switch handle is pushed in. Can not be opened when main line contactor is closed.
s — Start and stop push buttons are wired through terminal at “TB” in order that remote START-STOP buttons can be readily
connected into the circuit when required.
n — At a terminal on “TB”, a loop in the CT secondary circuit wire permits insertion of a hook on ammeter for measuring line current.
— Device furnished by others — mounted remote.
— Terminal board point.
I1
I
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout FVNR with M469 Relay
(Stationary also available)
SR469
(G6)
(H6)
(G7)
(H7)
C1
I
C3
(H8)
(G8)
C5
L1
L2
L3
50/5
1ST M 3ST (X1) GCT
PM (X2)
K13
K3
ISW 1FU
K12
K2
K11
K1
K1
K2
(H1)
PT
CPI (X1) (X2)
(23)
P21 P11
(24)
(?)
K3
(H3)
(H2)
3CT
(X1) PM(X2)
T3
2CT
(X1) PM(X2)
T2
T1
1CT
26
26N GND
IND.
MOTOR
GND
(?)
(X3) (25)CPI(26)
P13
P23
(3)
5FU
3A.
2FU
5FU
3A.
(2)
(4)
(G2) SR469 (G1)
P1
PM(X2)
SR469
GND
(1)
C0
(X1)
GND
(H1)SR469(H2)
P2
GRB
P3
(H1)
CPI
(15)
H15
(19)
TSW
TEST NORMAL TPI
CPI
(20) (22)
(4)
(3)
H19
(22)
H20
H22
(21)
H21
KVA
(H2)
T
(X1) XXXX/115V. (X4)
(X2)
(7) (8)
17N
(X3)
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
TSW
TEST NORMAL
17
GND
(1)
(2)
(1)
(23)
H23
3FU
(2)
TPI
X=CLOSED
(16)
16
PURCHASER'S TEST POWER
115V.
18
(1P5) M (1P6)
5
(5)
11
X=CLOSED
60
I2
61
(2P7) M (2P8)
62
(continued on next page)
12
(2P3) M (2P4)
7
7
6
(1P11) M (1P12)
(6)
17
63
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout FVNR with M469 Relay
(Stationary also available)
(continued from previous page)
7
17
I
CEM
(33)
MX
(34)
27M
(3)
(2)
(13)
7
CPS
MX
(14) (1)
17
(1)
(2)
13M
4M
(1P1)
(4)
1P1
(1P7)
M
(1P8)
(1) FLTR (2)
(1)
8
7
(2P5)
M
RIL
(1)
6A
GIL
17
(2)
17
OFF
(1)
1P2
(2)
RUN
(2P6)
7
M (1P2)
SPHTR
(2)
17
6A
MOTOR
SPACE HTR.
6A 1000W. MAX.
17
(1)
4FU
3A.
(2)
27
17
(continued on next page)
I3
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout FVNR with M469 Relay
(Stationary also available)
(continued from previous page)
27
17
I
(1)
33
27
START
STOP(2) LINK
(1)
(2)
3
1PB
2PB 1
(1P3)
M
(A1)
MX
4
(A2)
17
(1P4)
3
4
98 (F7) (E7) 99 (E9)(F8)
SR469 (E1)(F1)
(H12)
R1
R5
R6
(H11)
TRIP
BLOCK
SERVICE
(A1)
27
17
(A2)
(A3)
(E12)
1
R
T
D
(F12)
(A4)
2
(A16)
(A5)
R
T
D
(A17)
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
3
R
T
D
(A9)
(A21)
4
(A10)
(A22)
(A23)
R
T
D
(A11)
(A24)
(A12)
(A13)
(A25)
5
R
T
D
(A26)
(A14)
(A27)
6
(A15)
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(D25)
(D4)
(D26)
(1P9)
D23
M
8
(D27)
(D5)
(1P10) (D16)
(D6)
D16
(D7)
(D8)
(D17)
9
R
T
D
R
T
D
(D18)
(D9)
(D19)
(D20)
(D10)
R
10 T
D
(D21)
(D11)
(D22)
(D23)
(D12)
(D13)
(D24)
(D14)
(C1)
(D15)
(C2)
(C3)
(C4)
GROUND
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
(B1)
11 R
T
D
R
12 T
D
469-B1
(G12)
(G11)
GND
I4
GND GND
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
___ OHMS
MATERIAL ___________
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout Latched FVNR with M735 Relay
(Stationary also available)
SR735
(G1)
(H1)
(G2)
(H2)
C2
C1
C3
C4
(G3)
[9]
(10)[12] [11]
[5]
[6] (8)
(1)
L3
ISW
(X1)
K3
K13 (X1) PM (X2)
K2
K12
K1
PM(X2)
(7)
(2)
H3
T3
3CT
(X1)
PM(X2)
H2
T2
2CT
(X1)
PM(X2)
K11
AM
C0
50/5
GCT
1ST M 3ST
1FU
I
C20
C6
MANUAL
RELEASE
L2
AMS
[3]
(2) [4]
(H3)
C5
L1
AMS
(1)
26N
26
H1
T1
1CT
XFMR.
____KVA.
FLC - ___.
GND
(G4)
GND
(H4)
SR735
2FU
M
5P1
GND
LATCH
FRAME
(15)
H15
TSW
TEST NORMAL
(19)
(3)
(4)
H19
(1)
(20)
(22)
(22)
CPI
TPI
16
(33)
REC
MX
(13)
CPS
(14)(1)
(2) (1)
4M
13M
MX
17
(5)
(6)
X=CLOSED
(1P9)
1P2
MOV (2)
17
(1P2)
MCC
(1)
M (1P8)
FLTR
MR
(13)
1P2
M
(1P12)
M
(2P4)
M
(2P8)
8A
(2P7)
TM
(1)
(3)
(A1)
MR
62
(A2)
8A
TC
10
12
60
(14)
8
(2)
8
7
(1P10)
11
(2P3)
M
(1P1)
1P1
M
9
(1P11)
(4)
(1P7)
(8)
17N
(34)
27M
(3)
(7)
(X3) (X4)
GND
PURCHASER'S TEST POWER
115V.
18
(16)
(2)
7
(X1) (X2)
H21
H23
TSW
TEST NORMAL
XXXX/115V.
(21)
H22
(23)
(1)
X=CLOSED
3FU
(H2)
T
TPI
H20
(2)
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
KVA
(H1)
CPI
GRB
61
63
17
TDAE 1 SEC.
(1)
M
(2P5)
(2P6)
(1)
GIL
RIL
(2)
17
8
(2)
6A
7
17
CPD
(8)
7
(10)
17
(12) (14)
1A
(27)
CPI
NN
(1P3)
(28)
1A
M (1P4)
3
(H5)
SR735
(1P5)
M (1P6)
M
(4P1)
6
4
(1)
(G5)
(2)
3
1A
(1)
(4P2)
MTC
FLTR
(2)
NN
TRP
(1)
FLTR
(2)
NN
OPEN
(1)
1A
(2)
(H6)
7
3
2PB
SR735
(G6)
86 LOCKOUT
7
(8)
34
TRP
(4)
CLOSE
(1)
3A 1PB
(2)
(21)
4A
MR
(A1)
(22)
35
MX
(A2)
17
17
(continued on next page)
I5
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout Latched FVNR with M735 Relay
(Stationary also available)
(continued from previous page)
7
17
I
SR735
(H12)
7
(H11)
(-)
(+)
17
(G7)
(H7)
SERVICE
(G8)
A+
(H10)
B-
(H8)
GROUND
(G10)
(G11)
(G12)
GND GND
I6
RS422TX OPTION
(G9)
RS485
(RS422 RX)
(H9)
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
FGND
CHASSIS GROUND
SGND
GND
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVSS with M469 Relay
(Stationary also available)
POTENTIAL BUS
120V 3PH 60HZ
P1A
SR469
STB
P2A
P3A
BP
(G2) SR469 (G1)
P1A
(H6)
(G7)
(H7)
(G8)
(H8)
I
C3
(H1) SR469 (H2)
P2A
(G6)
C1
C1
P3A
C5
L1A
L2A
C0
L3A
ISW
1ST M 3ST
1FU
K3
GCT
K23
K13
(X1)
K2
K1
K2
(H1)
(H2)
K11
(24)
(23) (X1)
P11
2FU
2E
(X3) (25) CPI(26)
(X2)
P2
2CT
PM (X2)
T2
(X1)
1CT
T1
26N
26
GND
(G9)
GND
(H9)
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
P13
GND
(H1)
(15)
P1
P2
TO SSS
(NOT FOR CUSTOMER USE)
P3
CPI
H15
(19)
TSW
TEST NORMAL
(4)
(3)
TPI
(22)(22)
H20
H19
750VA
(1P11)
(H2)
50
T
(20)
IND.
MOTOR
SR469
GRB
PT
CPI
K21
SSS SCR BASE
GND
K3
(H3)
3CT
PM(X2)
T3
(X1)
K22
K12
K1
PM
PM (X2)
?
(X2)
(X1)
CPI
(21)
H22
H21
TSW
TEST NORMAL
XXXX/115V.
(X1)
(X2)
(7)
17N
(X3)(X4)
(2P9)
52
(8)
M (1P12)
51
M
(2P10)
53
17
GND
(1)
3FU
20A.
(2)
7
(2)
(1)
(23)
H23
X=CLOSED
TPI
(16)
16
PURCHASER'S TEST POWER
115V.
(5)
(6)
18
X=CLOSED
17
(continued on next page)
I7
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVSS with M469 Relay
(Stationary also available)
(continued from previous page)
7
MX
CEMM
I
(33)
17
(34)
27M
(3)
(2)
7
CPS
MX
(13)
(14)(1)
7
4M
17
(1)
(2)
13M
M (1P2)
(1P1)
(4)
1P1M
(1)
FLTR
1P2M
(2)
CEMBP
(3)
(2)
(13)
BPX
17
(1)
(14)
7
13BP
BP (1P2)
(1P1)
(4)
1P1BP
1P2BP
(1) FLTR (2)
(13)
CR
(14)
1-6
LINK
1-2
1-8
LINK
1-3
1-4
1-5
1-6
1-7
1-8
SSS
(TB1-2)
(TB1-3) (TB1-4)
(TB1-5) (TB1-6)
(TB1-1)
7
(TB8-9)
(A1)
(TB1-7)
(TB1-8)
(TB1-9)
MVC3-TCB
(TB8-10) (TB8-7)
MX
8-9
(A2)
8-10
(TB8-8) (TB8-5)
BPX
(A1)
8-7
(A2)
8-8
17
(TB8-6)
(1P11) BP
(TB8-3)
(TB8-4) (TB8-1)
(TB8-2)
(1P12)
8-5
8-6
8-3
8-4 8-1
8-2
LINK
(F8)
SR469
(E9)
(E1)
SR469
(F1)
A
SERVICE
(1P7)
M
8
(1)
LED
9
(1)
LED
(2)
START
(1)
2
(A1)
(2)
4-1
1PB
CR
(1P3)
(44)
3
I8
17
17
STOPPED
STOP(2)
(43)
(continued on next page)
(2)
RUN
GIL
2PB
(F7)
BLOCK
(2P12)
(1)
7
SR469
RIL
7
7
TRIP
M (1P8)
7
(2P11)
(E7)
B
M
CR
(A2)
17
(1P4)
4-1
17
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVSS with M469 Relay
(Stationary also available)
(continued from previous page)
17
7
I
(1)
4FU
3A.
(2)
SR469
(H12)
(H11)
27
17
(A1)
(A2)
(A3)
(E12)
1
R
T
D
(F12)
(A4)
(A16)
(A5)
2
R
T
D
(A17)
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
3
R
T
D
(A9)
(A21)
(A10)
(A22)
(A23)
4
R
T
D
(A11)
(A24)
(A12)
(A13)
(A25)
5
R
T
D
(A26)
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 SPARE
RTD 11 SPARE
RTD 12 AMBIENT
___ OHMS
MATERIAL ___________
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
CUSTOMER TO PROGRAM
(A14)
(A27)
6
(A15)
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(D25)
(D4)
(D26)
8
(D27)
(1P5)
D23
M (1P6)
(D5)
R
T
D
(D6)
(D16)
D16
(D7)
(D8)
(D17)
9
R
T
D
(D18)
(D9)
(D19)
(D20)
(D10)
R
10 T
D
(D21)
(D11)
(D22)
(D23)
(D12)
(D13)
(D24)
11 R
T
D
(D14)
(C1)
(D15)
(C2)
R
12 T
D
(C3)
(B1)
(C4)
GROUND
(G12)
469-B1
(G11)
GND
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
GND GND
I9
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVAT with M469 Relay
(Stationary also available)
(G6)
I
SR469
(H6)
C1
C0
(G7)
(H7)
(G8)
(H8)
C3
L1
L2
L3
(H1)
PT
5FU
3A.
(X1)
PM(X2)
PM(X2)
K3
R (FC) (3C) (1C) (0C)
(2C)
K23
K13
(X1)
K2
(FB) (3B) (1B) (0B)
(2B)
K22
(FA) (3A) (1A)(0A)
(X1)
K12
K11
K21
(X1) PM (X2)
(2A)
26N
26
(G9)
(H2)
CPI
(24) (23) (X1) (X2)
P2
P11 P21
(1)
C0
50/5
GCT
1ST M 3ST
K1
K2
C0
C5
TAPS 50-65-80%
TAP SET 65%
AT
N
ISW 1FU
K1
C0
T3
2CT
T2
1CT
T1
IND.
MOTOR
PM(X2)
GND
(H9)
GND
SR469
K3
(H3)
3CT
CPI
(X3) (25)
P23
(26)
P13
GND
(2)
2FU
(3)
5FU
3A.
(4)
(G2) SR469 (G1) (H1) SR469(H2)
P1
P2
P3
GND
(H1)
CPI
(19)
TEST NORMAL TPI
CPI
(20) (22)(22) (21)
(4) (3)
19
20
22
GRB
(H2)
T
XXXX/115V.
TSW
(15)
15
KVA
21
(X1)(X2)
ALL CONTROL
GNDS ARE CONNECTED
VIA TB TO GND BUS
TSW
TEST NORMAL
(7) (8)
(X3)(X4)
17N
17
(1P9) M (1P10)
GND
(1)
(2)
(1)
(23)
23
3FU
(2)
TPI
X=CLOSED
(16)
16
PURCHASER'S TEST POWER
115V.
18
(5)
9
(6)
10
(1P11) M (1P12)
11
X=CLOSED
12
(2P3) M (2P4)
61
60
(2P7) M (2P8)
62
7
(continued on next page)
I10
17
63
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVAT with M469 Relay
(Stationary also available)
(continued from previous page)
17
7
CEM
MX
(33)
27M
(3)
I
(34)
1P2
(2)
(13)
MX
(1)
(14)
CPS
17
(1)
(2)
M50
7
13M
1P1
(33)
SQR
M (1P2)
(1P1)
(4)
1P2
(1) FLTR (2)
(34)
M50
(E5)
M50
SR469
SQR
(F4)
(A1)
(A2)
17
8C
AUX.3
CONF. TRANSITION ON: 'CURRENT ONLY'
RED. VOLT START LEVEL: 125% FLA
RED. VOLT START TIMER: 30 SEC.
1CEM
(3)
2R
(2)
(13)
SQR
(2P9)
(14)
N
(2P10)
R24
M50
(21)
NX
17
(1)
(22)
R51
13R
R
(1P1)
(4)
1R
(13)
(1P7)
M
(1P8)
(21)
SQR
8
7
(1P9) R
(22)
NX
(14)
N29
3REC
(1P10)
MOV
(1)
(2)
N25
N23
17
(4)
N
(2P1)
(2P2)
N26
N29
(1)
(A1)
NX
FLTR
(2)
(A2)
17
N25
(1)
RIL
(2)
8
(2P5)
M
17
(2P6)
7
2R
(1) FLTR (2)
N27
(3)
(1P2)
(1)
GIL
(2)
6A
17
(1)
6A
1SPHTR
(2)
17
2SPHTR
(1)
(2)
6A
17
MOTOR
SPACE HTR.
6A
17
(1)
4FU
3A.
(2)
27
17
(continued on next page)
I11
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVAT with M469 Relay
(Stationary also available)
(continued from previous page)
27
17
I
(1)
START
LINK
TST
(2) (1) STOP(2)
(1)
33A 2PB 1
33
3
(A1)
(2)
(1P3) M
MX
(A2)
4
1PB
17
(1P4)
3
4
27
98 (F7) (E7) 99 (E9)(F8)
SR469 (E1)(F1)
(H12)
R1
R5
R6
TRIP
BLOCK
SERVICE
27
(H11)
17
(A1)
(A2)
(A3)
(E12)
1
R
T
D
(F12)
(A4)
(A16)
(A5)
2
R
T
D
(A17)
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
3
R
T
D
(A9)
(A21)
4
(A10)
(A22)
(A23)
R
T
D
(A11)
(A24)
(A12)
(A13)
(A25)
5
R
T
D
(A26)
(A14)
(A27)
6
(A15)
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(D25)
(D4)
(D26)
8
(D27)
M (1P6)
(1P5)
(D5)
(D6)
(D16)
D16
D23
(D7)
(D8)
(D17)
(D18)
(1P3)
D23
R
(1P4)
(D19)
D19
(D20)
(D21)
(D22)
FACTORY PROGRAM
GENERAL SW. A
- INPUT 1
- NAME: INCOMP. SEQ.
- NORMALLY CLOSED
- BLOCK INPUT FROM START: 1 SEC.
- ALARM: OFF
- TRIP: LATCHED
- TIME: 30 SECONDS
(D23)
(D9)
(D10)
(D14)
(C1)
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
(C2)
(C3)
(C4)
GROUND
9
R
10 T
D
(D15)
(B1)
11 R
T
D
R
12 T
D
469-B1
(G12)
(G11)
I12
R
T
D
(D11)
(D12)
(D13)
(D24)
GND
R
T
D
GND GND
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
___ OHMS
MATERIAL ___________
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVPR with M469 Relay
(Stationary also available)
SR469
(G6)
(H6)
(G7)
(H7)
C0
C1
(H8)
(G8)
C5
L1
L2
L3
ISW 1FU
1ST M 3ST
K3
K13
(X1) (X2)
PM
(X1) PM (X2)
K23
C0
C0
50/5
GCT
R
I
C0
C3
3CT
T3
2CT
T2
1CT
T1
(X1) (X2)
PM
K2
K12
K22
IND.
MOTOR
(X1) (X2)
PM
K11
K21
26N
TAPS 50-65-80%
26 GND
SET AT 65%
SR
(G9)
(H9)
(3A) SR469
(0A) (1A) (2A)
K21
K1
K1
(H1)
PT
CPI
(24)
K2
(H2)
(23) (X1) (X2)
P11 P21
K3
(H3)
P23
5FU
3A.
SR469
P1
(G1)
P2
GRB
2FU
(4)
SR469
(H1)
GND
K23
(3)
5FU
3A.
(2)
(G2)
K22
(3C)
(OC) (1C) (2C)
P13
GND
(1)
(3B)
(OB) (1B) (2B)
(X3)(25)CPI(26)
P2
GND
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
(H2)
P3
(H1)
TSW
TEST NORMAL TPI
CPI
(15)
15
(19)
(4)
19
CPI
(X1)
(20) (22)(22) (21)
(3)
20
21
22
KVA
(H2)
(1P7) M (1P8)
T
XXXX/115V. (X4)
(X2)
TSW
TEST NORMAL
17
9
3FU
(2)
7
(2) (1)
23
X=CLOSED
TPI
(23)
(16)
16
PURCHASER'S TEST POWER
115V.
18
10
(2P3) M (2P4)
GND
(1)
8
(1P9) M (1P10)
(7) (8)
17N
(X3)
7A
(5) (6)
64
X=CLOSED
66
65
(2P7) M (2P8)
67
17
(continued on next page)
I13
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVPR with M469 Relay
(Stationary also available)
(continued from previous page)
7
17
I
CEM
(33)
MX
(34)
1P2
27M
(3)
(2)
(13)
MX
(1)
(14)
CPS
17
(1)
(2)
M50
13M
(1P1)
(4)
1P1
M (1P2)
1P2
(1) FLTR (2)
1CEM
2R
(3)
(2)
(13)
M50
SQR
17
(1)
(14)
R25
1R
(E5)
M50
SR469
(A1)
R25
(1)
M50
(2P5)
M
(1)
6A
GIL
2R
(A2)
17
(2)
17
RUN
(2P6)
(1P2)
(1) FLTR (2)
SQR
(F4)
AUX.3
CONF. TRANSITION ON: 'CURRENT ONLY'
RED. VOLT START LEVEL: 125% FLA
RED. VOLT START TIMER: 30 SEC.
RIL
7
R
(1P1)
(4)
(2)
17
OFF
(1)
1SPHTR
(2)
17
6A
(1)
2SPHTR
(2)
17
6A
MOTOR
SPACE HTR.
6A
800W. MAX.
17
(1)
4FU
3A.
(2)
27
(continued on next page)
I14
17
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout RVPR with M469 Relay
(Stationary also available)
(continued from previous page)
27
17
I
(1)
START
LINK
TST
(2) (1) STOP(2)
(1)
33A 2PB 1
33
3
(A1)
(2)
1PB
(1P3) M
MX
(A2)
4
17
(1P4)
3
4
27
98 (F7) (E7) 99 (E9)(F8)
SR469 (E1)(F1)
(H12)
R1
R5
R6
TRIP
BLOCK
SERVICE
27
(H11)
17
(A1)
(A2)
(A3)
(E12)
1
R
T
D
(F12)
(A4)
(A16)
(A5)
2
R
T
D
___ OHMS
MATERIAL ___________
(A17)
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
3
R
T
D
(A9)
(A21)
(A10)
(A22)
(A23)
4
R
T
D
(A11)
(A24)
(A12)
(A13)
(A25)
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
5
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
R
T
D
(A26)
(A14)
(A27)
6
(A15)
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(D25)
(D4)
(D26)
8
(D27)
(1P5) M (1P6)
D23
(D5)
R
T
D
(D6)
(D16)
D16
(D7)
(D8)
(D17)
9
R
T
D
(D18)
(D9)
(D19)
(D20)
(D10)
R
10 T
D
(D21)
(D11)
(D22)
(D23)
(D12)
(D13)
(D24)
(D14)
(C1)
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
(C2)
(C3)
(C4)
GROUND
(D15)
(B1)
11 R
T
D
R
12 T
D
469-B1
(G12)
(G11)
GND
GND GND
I15
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary Brush FVNR with SFC, M469 Relay
(Drawout also available)
SR469
(G6)
(H6)
(G7)
(H7)
C0
C1
I
C3
(G8)
C5
L1
L2
L3
ISW 1FU
(X1)
(X1) PM (X2)
K3
K2
(H1)
PT
CPI
(24)
(23) (X1)
P21 P11
(H2)
(X2)
K12 2CT
T2
P1
SYNC.
MOTOR
(X2)
PM
K11 1CT
T1
GND
(H9)
2FU
P13
P23
(3)
5FU
3A.
(2)
GND
(4)
(G2)SR469(G1)
(X2)
PM
SR469
K3
(H3)
GND
5FU
3A.
(X2)
PM
(X3)(25)CPI(26)
P2
(1)
26N
26 GND
(G9)
K2
C0
C6
T3
(X1)
K1
(B4)
K13 3CT
(X1)
K1
(B3)
C0
50/5
GCT
M
C0
SPM
(H8)
(H1) SR469(H2)
P2
GRB
KVA (H2)
(H1)
T
XXXX/115V
P3
(X6) (X5) (X4) (X3)
CPI
(15) (19)
H15 H19
(1)
91
TSW
TEST NORMAL TPI
CPI
(20) (22)(22) (21)
(4) (3)
H20
H22
21
(2)
(1)
3FU
(2)
X=CLOSED
TPI
(23) (16)
H23
16
(X2)
(X7)
(X1)
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
90
TSW
TEST NORMAL
PG(11) (1P11)M (1P12) PG(12)
11
12
(2P7) M (2P8)
(7) (8)
17N
17
60
PURCHASER'S TEST POWER (5) (6)
115V.
18
X=CLOSED
61
(2P9) M (2P10)
62
63
MX(44)
(43)
64
91
(continued on next page)
I16
7
17
90
65
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary Brush FVNR with SFC, M469 Relay
(Drawout also available)
(continued from previous page)
7
90
91
(1)
MOV1
F1
F2
(F1) SYNC. FLD.
17
I
NOTE
SEPARATELY SHIPPED FIELD
DISCHARGE RESISTOR MUST BE
MOUNTED AND CONNECTED TO
CONTROLLER BEFORE
ENERGIZING CONTROLLER.
(2)
(F2)
F2
F1
F1
(R1)
R1
CM
(X1)
CM8 (8)
FDRS
F2
(R1)
D1RS
(VF+)
60K~
5W.
R1
DCCT
CM7 (7)
(X2)
(R3)
VDN
MOV
(A18)
D2RS
(F2)
60K~
5W.
(VF-)
SPM
(A19)
SPM+
SPM-
R1
SFC
(1)
91
(X3)
(X1)
[+]
F1
RM
(2)
89
(1) 11FU (2)
(L1)
(2) 12FU (1) (4)
SFCL2
88
(L2)
SFCL1
(X2)
[-] F2
(V+)
F1
VDN
D5RS
RM
(3)
90
D6RS (V-)
(VE-)
300K~ (VE+)
2W.
F2
300K~
2W.
(A21)SPM(A20)
VE+
VE-
SFC
PG(5) (1P5) M(1P6) PG(6)
SFC7 (9) (10)
7
(A6) SPM (A7)
SFC5
17
NOTE: SEE SFC INSTRUCTION
SHEET FOR DETAILS OF SFC.
(5)
(6)
SFC6
GND
(B9)
7
(GROUND)
(B8)
GND GND
(A5) (A4)
SPM
NOTE: READ INST-SPM
BEFORE ENERGIZING
CONTROLLER.
(A10)
NX
(A9)
GND
(A17) (A16)
(B10)
17
(A25)
CM1
CM
(5)
(A24)
(A12)
CM2
MX1
(2P3) M
(6)
MX
(3)
7
7
(A11)
(2P4)
MX1
(4)
17
17
I17
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary Brush FVNR with SFC, M469 Relay
(Drawout also available)
27
17
I
(A22) SPM (A23) (1)STOP(2) LINK
33 2PB 1
34
START
(1)
(2)
MX
(A1)
3
4
1PB
PG(3) (1P3) (1P4)PG(4)
4
M
(A2)
17
27
SR469
(H12)
27
(E1)(F1) 98 (F7)(E7) 99 (E9)(F8)
R1
TRIP
R5
R6
BLOCK SERVICE
(H11)
17
(A1)
(A2)
(A3)
(E12)
(F12)
(A4)
(A16)
(A5)
(A17)
(A18)
(A6)
(A19)
(A20)
(A7)
(A8)
(A9)
(A21)
(A10)
(A22)
(A23)
(A24)
(A12)
(A13)
(A14)
(A27)
(A15)
(B2)
(B3)
(D1)
(B4)
(D2)
(D3)
(D25)
(D26)
(D4)
(D27)
(D5)
M
PG(5) (1P5) (1P6)PG(6)
(D16)
D16
D23
(D7)
(D8)
(D18)
(D19)
(D9)
(D20)
(D10)
(D21)
(D22)
(D11)
(D23)
(D12)
(D13)
(D24)
(D14)
(C1)
(C4)
3 R
T
D
R
4 T
D
5 R
T
D
R
6 T
D
7 R
T
D
R
8 T
D
(D6)
(D17)
(C3)
2 R
T
D
(A11)
(A25)
(A26)
(C2)
1 R
T
D
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
GROUND
(D15)
9 R
T
D
R
10 T
D
11 R
T
D
R
12 T
D
(B1) 469-B1
(G12)
(G11)
GND
I18
GNDGND
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
___ OHMS
MATERIAL ___________
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary Brushless FVNR with M469 Relay
(Drawout also available)
SR469
(G6)
C1
(G7)
C3
(G8)
C5
L1
L2
L3
ISW 1FU
(B4)
C0
SPM
(B1)
(H7)
C4
(B2)
I
C0
(H8)
C0
(X1) PM(X2)
K13 (X1) PM (X2)
K3
(B3)
C0
50/5
GCT
M
SPM
(H6)
C2
3CT
T3
2CT
(X1) PM(X2)
T2
(X1) PM(X2)
K2
K12
K1
K1
(H1)
PT
CPI
(24)
P21
(1)
K2
(H2)
(23) (X1) (X2)
P2
P11
5FU
3A.
(X3) (25)CPI(26)
P13
P23
GND
26N
26
(G9)
K3
(H3)
T1
1CT
GND
GND
(H9)
SR469
(3)
2FU
5FU
3A.
(4)
(2)
(G2) SR469 (G1)
P1
P2
K11
SYNC.
MOTOR
(H1) SR469 (H2)
P3
GND
(H1)
CPI
(15)
H15
(19)
TSW
TEST NORMAL TPI
(4)
(3)
H19
(20)
H20
H22
(21)
H21
GRB
(H2)
T
XXXX/115V.
CPI
(22)(22)
KVA
(X1)
(X2) (X3)
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
TSW
TEST NORMAL
(7)
(8)
17
(X4)
GND
(1)
3FU
(2)
(1)
X=CLOSED
TPI
(23)
H23
(16)
16
PURCHASER'S TEST POWER
115V.
PG (9) (1P9) M (1P10)PG(10)
(5)
18
(6)
9
10
PG (11) (1P11) M (1P12)PG(12)
X=CLOSED
(2)
11
12
(2P7) M (2P8)
60
7
62
7
61
(2P9) M (2P10)
63
17
(continued on next page)
I19
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary Brushless FVNR with M469 Relay
(Drawout also available)
(continued from previous page)
7
17
I
MX
CEM
(3)
(2)
(13)
MX(14)
(34)
1P2
17
(1)
(4)
13M
7
(33)
27M
(1P1) M (1P2)
1P1
1P2
(1) (2)
FLTR
(A6) SPM (A7)
8
(A)
(1)
8A
FC(B)
17
(2)
FLTR
PG(7) (1P7) M (1P8) PG(8)
7
RIL
(1)
17
(2P5) M (2P6)
7
(2)
8
GIL
(1)
(2)
6A
17
SPHTR
(1)
(2)
17
6A
MOTOR
SPACE HTR.
6A 1000W. MAX.
7
I20
17
17
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary Brushless FVNR with M469 Relay
(Drawout also available)
(continued from previous page)
7
17
FLTR
(1)
I
(2)
VT
(5)
(4)
17
7
(3)
F3
(1)
4FU
3A.
DC+
(1)
7FU
10A.
(2)
(3)
7REC
(2)
(1)
MOV (2)
F4
17
(4)
DCD6RS (V-)
(VE-) 300K~
2W.
VDN
(V+) D5RS
300K ~ (VE+)
2W.
(A21)SPM(A20)
FC(2)(3) FC(4) VE+
DC+ F5
F1
VE-
(1)
(5)
(1)
DCCT
7RS
(2)(1)
8RS
FC(6)(7) FC(8)
F6
F2
(2)
50 OHMS F750 OHMS
100W.
100W.
CM
(X1)
F2
1 (8)
(7)
(X2)
2
EXC.FLD
F2
F1
(B9)
7
(G1) (B8)
GNDGND
(A5) (A4)
SPM
NOTE: READ INST-SPM
BEFORE ENERGIZING
CONTROLLER.
(A10)
NX
(A9)
GND
(A17)
(B10)
17
(A25)
(A24) (A12)
CM1 CM2
CM
(5)
7
27
(A11)
MX1
(2P3) M (2P4)
(6)
MX
(3)
(A16)
MX1
(4)
17
17
(continued on next page)
I21
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary Brushless FVNR with M469 Relay
(Drawout also available)
(continued from previous page)
27
17
I
(A22)
SPM (A23)
(1) STOP(2)
33 2PB 1
34
START
LINK
(1)
3
(A1)
(2)
1PB
MX
4
(A2)
17
PG (3) (1P3) M(1P4) PG(4)
4
27
98 (F7) (E7) 99 (E9)(F8)
SR469 (E1)(F1)
(H12)
R1
R5
R6
TRIP
BLOCK
SERVICE
27
(H11)
17
(A1)
(A2)
(A3)
(E12)
1
R
T
D
(F12)
(A4)
(A16)
(A5)
2
R
T
D
___ OHMS
MATERIAL ___________
(A17)
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
3
R
T
D
(A9)
(A21)
4
(A10)
(A22)
(A23)
R
T
D
(A11)
(A24)
(A12)
(A13)
(A25)
5
R
T
D
(A26)
(A14)
(A27)
6
(A15)
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(D25)
(D4)
(D26)
8
(D27)
(D5)
PG (5) (1P5) M (1P6) PG(6) (D16)
D16
(D6)
D23
(D7)
(D8)
(D17)
9
R
T
D
R
T
D
(D18)
(D9)
(D19)
(D20)
(D10)
R
10 T
D
(D21)
(D11)
(D22)
(D23)
(D12)
(D13)
(D24)
11 R
T
D
(D14)
(C1)
(D15)
(C2)
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
(C3)
(C4)
GROUND
(B1)
R
12 T
D
469-B1
(G12)
(G11)
GND
I22
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
GND GND
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout Brush Sync with VFC, M469 Relay
(Stationary also available)
SR469
STB
C1
NOTE:
CUSTOMER TO PROGRAM
SR469 RELAY IN FIELD.
(G6)
(H6)
(G7)
(H7)
C0
C1
C3
C3
SPM
(G8)
L1
L2
L3
C5
(H8) (B3)
C2
C5
C0
ISW 1FU
1ST M 3ST
GCT
(X1)
PM (X2)
K13
K3
K11
K1
PM
3CT
PM (X2)
T3
(X1)
2CT
PM (X2)
T2
(X1)
2FU
(G9)
C0
(X2)
SYNC.
MOTOR
T1
1CT
26N
26
GND
(B4)
C0
(X1)
K12
K2
I
C0
GND
(H9)
SR469
MOV1
(1)
(2)
F2
F1
(F1) SYNC. FLD. (F2)
F1
F1
(R1)
R1
CM
(X1)
CM8 (8)
F2
VDN
D1RS MOV D2RS
60K~
60K~
5W.
5W.
(R1)
(VF+)
(7)
(X2)
CM7
NOTE
SEPARATELY SHIPPED FIELD
DISCHARGE RESISTOR MUST BE
MOUNTED AND CONNECTED TO
CONTROLLER BEFORE
ENERGIZING CONTROLLER.
(R3)
R1
DCCT
F2
250VDC
FDRS
(F2)
VF(-)
SPM
(A18)
(A19)
SPM+
SPM-
[CW]
POT
[CCW]
(1)
(2) (3)
10K~
2W.
R1
VFC
(X3) TB2(1) SP1
(X1)TB2(2)
RM
(1)
91
11FU
(2)
89
(1)
GND
SP2
[+] TB2(3)
TB2(4) SP3
F1
(2)
(L1)
SFCL1
(2)12FU(1)
(L2)
(X2) SFCL2
[-] F2
CONTROL CARD
LOCAL REMOTE
J5
(6)
88
RM(5)
90
VDN
(V+) D5RS
F1
D6RS (V-)
(VE-) 300K ~
300K ~ (VE+)
2W.
2W.
(A21)SPM(A20)
VE+
VE-
F2
(H2)
(H1)
T
XXXX-299/115V
(X6)
(X5) (X4) (X3)
(X2)
(X7)
(X1)
90
91
GND
GRB
21
17N
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
(continued on next page)
I23
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout Brush Sync with VFC, M469 Relay
(Stationary also available)
(continued from previous page)
I
21
17N
TSW
(15)
CPI
H15
TSW
TEST NORMAL
(4)
(3)
(19)
TPI
(20)
(22) (22)
H20
H19
(1)
(2)
(23)
(1)
TEST NORMAL
(7) (8)
(21)
H22
TPI
21
16
(5)
X=CLOSED
(2)
17
17N
PURCHASER'S TEST POWER
115V.
18
(16)
H23
3FU
20A.
CPI
(6)
X=CLOSED
CEM
(3)
(33)
MX
(34)
27M
1P2
(2)
MX
(13)
(1)
(14)
CPS
17
(1)
(2)
4M
7
13M
(1P1)
(4)
1P1
M (1P2)
1P2
(1) FLTR (2)
(A)
7
(1)
M
(2P11)
(2P12)
(1)
(1)
RIL
SFC7
SPM (A7)
17
(2)
NOTE: SEE VFC INSTRUCTION
SHEET FOR DETAILS OF VFC.
SFC5
TB1(2)
SFC6
GND
(A5) (A4) (A1)
SPM
NOTE: READ INST-SPM
(B9)
BEFORE ENERGIZING
CONTROLLER.
7
(GROUND)
(B8)
(A9)
(A10)
GND GND
(A2)
(A3)
(B10)
17
(A24)
GND
(A12)
(A11)
CM2
CM1
NX
(A17) (A16)
(A25)
MX1
CM
(5)
M
(2P5)
(6)
(2P6)
MX
(3)
MX1
(4)
7
17
(1)
4FU
3A
(2)
(E1)
SR469
(F1)
(F7)
SR469
(E7)
99A
27
TRIP
(F8)
SR469
(E9)
BLOCK
(A22)
33
99
SERVICE
SPM
LINK
(A23) (1) STOP(2)
33A 2PB
START
(1)
1
2
27
I24
MX
(2)
(1P3) M
(A1)
3
1PB
2
(continued on next page)
65
(2P7)
M
(2P8)
(1P11)
M
(1P12)
68
TB1(5)
TB1(6)
TB1(1)
(1P10)
67
66
(2)
VFC
M (1P6)
7
(A6)
17
(2)
FLTR
M
64
LED
RUNNING
SFC7
(1P5)
(B)
LED
STOPPED
7B
7
GIL
(1P9)
RM
(A2)
17
(1P4)
3
17
69
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Drawout Brush Sync with VFC, M469 Relay
(Stationary also available)
(continued from previous page)
27
17
I
SR469
(H12)
(H11)
27
17
(A1)
1
(A2)
(A3)
(E12)
R
T
D
(F12)
(A4)
2
(A16)
(A5)
R
T
D
(A17)
(A6)
(A18)
(A19)
3
(A7)
(A8)
(A20)
(A9)
(A21)
4
(A10)
(A22)
(A23)
R
T
D
R
T
D
(A11)
(A24)
5
(A12)
(A13)
(A25)
R
T
D
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
___ OHMS
MATERIAL ___________
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
(A26)
(A14)
(A27)
6
(A15)
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
R
T
D
(B2)
(D1)
(B3)
7
(B4)
(D2)
(D3)
R
T
D
(D25)
(D4)
(D26)
(2P3)
M
8
(D27)
(D5)
(2P4) (D16)
(D6)
D23
D16
NOTE:
CUSTOMER TO PROGRAM
SR469 RELAY IN FIELD.
9
(D7)
(D8)
(D17)
R
T
D
R
T
D
(D18)
(D9)
(D19)
R
(D20)
(D10)
10 T
D
(D21)
(D11)
(D22)
(D23)
D23
(D12)
(D13)
(D24)
11 R
T
D
(D14)
(C1)
R
(D15)
(C2)
12 T
PT BUS - PBTB
P1
P2
P3
D
(C3)
(B1)
(C4)
GROUND
469-B1
(G12)
(G11)
GRB
GRB
(G2)
GRB
P1
SR469
(G1)
(H1)
P2
SR469
(H2)
P3
I25
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary FVR with M469 Relay
(Drawout also available)
SR469
STB
I
(G6)
(H6)
(G7)
(H7)
(G8)
(H8)
C0
C3
C0
C5
L1
L2
L3
ISW 1FU
M
K13
3CT
(X1) PM
K12
K2
2CT
(X1) PM
BFT
K1
K2
(H1)
PT
CPI
(24)
P21
(23) (X1) (X2)
P11
P2
(1)
(H2)
5FU
3A.
(2)
F
GCT
K13
K23
K12
K22
K11
K21
MECH. INTERLOCK
R
(X1) PM (X2)
K12
T1
26
26N
2STB
(G9)
K22
K11
GND
SHLD
(H9)
SR469
K21
GND
K13
2FU
2E
(3)
K23
GRB
5FU
3A.
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
(4)
(H1) 750VA (H2)
CPI
(15)
H15
(19)
TSW
TEST NORMAL TPI
(4)
(3)
H19
T
XXXX/115V.
CPI
(20)
(22)(22)
H20
H22
(21)
H21 (X1)
(X2) (X3)
TSW
TEST NORMAL
(7)
(X4)
M
(8)
17N
17
GND
(1)
3FU
10A.
(2)
(2) (1)
TPI
(23)
H23
X=CLOSED
(16)
16
PURCHASER'S TEST POWER
18
115V.
(5)
(6)
X=CLOSED
7
7
I26
IND.
MOTOR
T2
(X2)
GND
P2
(G2) SR469(G1) (H1) SR469(H2)
P1
P2
P3
(continued on next page)
T3
(X2)
1CT
K3
(H3)
(X3) (25)CPI(26)
P13
P23
GND
K11
K1
C0
C0
(X2)
(X1) PM
K3
NOTE:
SR469 TO BE PROGRAMMED
IN FIELD BY OTHERS.
C0
1
C1
17
PG(11) (1P11) (1P12) PG(12)
12
11
(2P3) M (2P4)
51
50
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary FVR with M469 Relay
(Drawout also available)
(continued from previous page)
17
7
CEM
(33)
MX
I
(34)
1P2
27M
(3)
(2)
(13)
MX
17
(1)
(14)
7
13M
(1P1)
(4)
1P1
(1P7)
F
M (1P2)
1P2
(1) FLTR (2)
(1P8)
(1)
7
7A
RIL
(2)
17
FORWARD
1CEM
2R
(3)
(2)
PG(7)
(1P7)
M(1P8) PG(8)
7
(2P9)
R
(2P10)
(13)
FX
17
(1)
(14)
7B
8
13R
F
(1P1)
(4)
1R
(1P2)
2R
(1) FLTR (2)
2CEM
4R
(3)
(2)
(1P9)
F
(1P10)
(13)
RX
17
(1)
(14)
7C
8
13N
(2P1)
(4)
3R
(2P7)
R
(2P8)
FX
1RIL
(2)
(A1)
32
RX
4R
17
REVERSE
(44)
7
(43)
(2P2)
(1) FLTR (2)
(1)
31
(43)
R
(1)
MX
(A2)
FLTR
(2)
17
(44)
7
32
(2P5)
M
(2P6)
(1)
6A
7
BFIPS
(L)
(+) B1
PG(1)
(2)
OFF
17
BFT PG(2)
RESET
BFI
(1) (2)
(B)
(3)
(4) (R)
B12
B
R
(-)
B47
(N)
GIL
B1
(1)
(2)
(7)
(8)
(5)
(6)
3PB
B
B
17
7
17
(continued on next page)
I27
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
400A Stationary FVR with M469 Relay
(Drawout also available)
(continued from previous page)
17
5
I
PG(13)
BFT PG(14)
(3) (4)
33
(1)
30
2PB
FORWARD
LINK
STOP(2)
(1)
0
1
MX
(43)
(44) (1P3)
4FU
3A.
F
27
SR469 (E1)(F1)
(H12)
98
(F7) (E7)
2A
R5
R6
(H11)
TRIP
BLOCK
SERVICE
(A1)
(A2)
(A3)
(E12)
1 R
T
D
(F12)
(A4)
(A16)
(A5)
R
2 T
D
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
(A9)
(A21)
(A10)
(A22)
(A23)
(A12)
(A13)
(A25)
R
4 T
D
5 R
T
D
(A26)
(A14)
(A27)
6
(A15)
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(D25)
(D4)
(D26)
8
(D27)
(D5)
R
T
D
(D6)
(D16)
D16
(D7)
(D8)
PG(6) (D17)
(1P6) (D18)
(D9)
(D19)
(D20)
(D10)
9
R
T
D
R
10 T
D
(1P5) (D21)
PG(5) (D22)
(D11)
(D23)
(D12)
(D13)
(D24)
(D14)
(C1)
(D15)
(C2)
(C3)
(C4)
GROUND
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
(B1)
11 R
T
D
R
12 T
D
469-B1
(G12)
(G11)
GND
4
R
FX
(A1)
(22)
4A
(1)
(2P4)
4
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
3 R
T
D
(A11)
(A24)
D23
(21)
(2)
___ OHMS
MATERIAL ___________
(A17)
GND GND
(A2)
FLTR
99 (E9)(F8)
R1
27
(1)
FX
(2)
17
(1P4)
4PB
(2P3)
M
3A
REVERSE
1
33
(A1)
(22)
3
(1)
(2)
RX
3
2A
(1)
I28
(21)
(2)
1PB
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
NOTE: SR469 TO BE PROGRAMED IN FIELD BY OTHERS.
RX
(A2)
FLTR
(2)
17
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Drawout FVNR with M469 Relay
(Stationary also available)
SR469
(G6) (H6)
C1
C0
(G7) (H7)
C3
I
C0
(G8) (H8)
C5
L1
L2
L3
ISW 1FU
C0
50/5
GCT
1ST M 3ST
(X1)PM(X2)
K13(X1) PM (X2)
K3
C0
T3
3CT
(X1)PM(X2)
K2
K12
IND.
MOTOR
T2
2CT
(X1)PM(X2)
K1
K11
(G9)
T1
1CT
26N
26 GND
GND
(H9)
SR469
P1
P2
P3
2FU
(G2) SR469(G1)
P1
(H1)
(H1)SR469(H2)
P2
P3
CPI
(15)
(19)
TSW
TEST NORMAL TPI
(4)
(3)
H15 H19
(20)
H20
(2) (1)
(1)
3FU
(22)
H22
(21)
(23)
(16)
(X1)
H21
TPI
H23
X=CLOSED
CPI
(22)
16
KVA
(H2)
T
XXXX/115V. (X4)
(X2)
(X3)
TSW
TEST NORMAL
GND
(7) (8)
17
17N
GND
PURCHASER'S TEST POWER
115V.
18
GRB
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
(5) (6)
X=CLOSED
(2)
(1P9) M (1P10)
9
10
(1P11) M (1P12)
11
12
60
61
62
63
(2P3) M (2P4)
(2P7) M (2P8)
7
17
(continued on next page)
I29
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Drawout FVNR with M469 Relay
(Stationary also available)
(continued from previous page)
17
7
I
CEM
(33)
MX
(34)
27M
(3)
1P2
(2)
(13)
MX
(1)
(14)
CPS
17
(1)
(2)
4M
7
13M
M
(1P1)
(4)
1P1
(1P7)
M
(1P8)
7
(1)
8
(2P5)
M
(2P6)
7
RIL
GIL
1P2
(2)
RUN
(1)
6A
(1) FLTR (2)
(1P2)
17
(2)
OFF
1SPHTR
(1)
17
(2)
17
6A
MOTOR
SPACE HTR.
6A
17
(1)
4FU
3A
(2)
27
(continued on next page)
I30
17
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Drawout FVNR with M469 Relay
(Stationary also available)
(continued from previous page)
27
17
I
(1)
34
STOP(2)
2PB
START
LINK
(1)
0
5
(1P3)
(A1)
(2)
1PB
2
M
(1P4)
5
MX
(A2)
2
27
98 (F7) (E7) 99 (E9)(F8)
SR469 (E1)(F1)
(H12)
R1
R5
R6
(H11)
TRIP
BLOCK
SERVICE
(A1)
27
17
(A2)
(A3)
(E12)
1
R
T
D
(F12)
(A4)
2
(A16)
(A5)
R
T
D
___ OHMS
MATERIAL ___________
(A17)
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
3
(A9)
(A21)
4
(A10)
(A22)
(A23)
R
T
D
R
T
D
(A11)
(A24)
(A12)
(A13)
(A25)
5
R
T
D
(A26)
(A14)
(A27)
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
6
(A15)
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
NOTE: SR469 TO BE PROGRAMED IN FIELD BY OTHERS.
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(D25)
(D4)
(D26)
(1P5)
D23
M
8
(D27)
(D5)
(1P6) (D16)
(D6)
D16
(D7)
(D8)
(D17)
9
R
T
D
R
T
D
(D18)
(D9)
(D19)
(D20)
(D10)
R
10 T
D
(D21)
(D11)
(D22)
(D23)
(D12)
(D13)
(D24)
(D14)
(C1)
(D15)
(C2)
(C3)
(C4)
GROUND
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
(B1)
11 R
T
D
R
12 T
D
469-B1
(G12)
(G11)
GND
GND GND
(continued on next page)
I31
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Drawout Latched FVNR with M735 Relay
(Stationary also available)
SR735
(G1)
(H1)
(G2)
(H2)
(G3)
(H3)
(1)
I
MANUAL
RELEASE
L1
L2
(2) [4]
ISW
50/5
GCT
1ST M 3ST
1FU
(X1)
K3
K13 (X1) PM (X2)
K2
K12
K1
K11
(10)
[5]
[6] (8)
PM (X2)
(7)
(2)
H3
H2
T2
H1
T1
1CT
GND
GND
(H4)
AM
T3
3CT
(X1)
PM (X2)
2CT
(X1)
PM (X2)
(G4)
[12] [11]
[9]
(1)
L3
AMS
[3]
AMS
XFMR.
____KVA.
FLC - ___.
SR735
2FU
M
(4P5)
GND
LATCH
FRAME
(H1)
CPI
TEST NORMAL
(4)
(19)
(H2)
T
TSW
(15)
KVA
(3)
TPI
(20)
(22)
(22)
CPI
(X1) (X2)
(1)
(2)
(1)
(23)
TPI
(7)
(16)
(33)
M
(1P10)
M
(1P12)
(2P3)
M
(2P4)
(2P7)
M
(2P8)
(1P9)
9
MX
(1P11)
(6)
(5)
PURCHASER'S TEST POWER
115V.
(2)
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
(8)
(X3) (X4)
GND
X=CLOSED
3FU
TSW
TEST NORMAL
XXXX/115V.
(21)
GRB
10
12
11
X=CLOSED
(34)
(3)
MX
(13)
(1)
(14)
CPS
REC
(1)
(2)
MOV
(2)
62
(13)
MR
M
(1P1)
(4)
(14)
MCC
(1)
TM
(1)
(1P2)
FLTR
(2)
(3)
(A1)
MR
(A2)
TC
(1P7)
TDAE 1 SEC.
M (1P8)
(1)
(2P5) M
RIL
(2)
(2P6)
(1)
GIL
CPD
(8) (10)
(12) (14)
(27)
CPI
(28)
(1P3)
M
(1P4)
(1P5)
M (1P6)
M
(4P1)
(1)
(H5)
SR735
TRP
(G5)
(2)
(1)
OPEN
(1)
FLTR
(1)
FLTR
(2)
(2)
2PB
(H6)
SR735
(G6)
86 LOCKOUT
(continued on next page)
I32
(8)
TRP
(4)
CLOSE
(1)
(2)
1PB
(21)
MR
(22) (A1)
MX
(A2)
(4P2)
(2)
(2)
63
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Drawout Latched FVNR with M735 Relay
(Stationary also available)
(continued from previous page)
7
17
I
SR735
(H12)
7
(H11)
(+)
17
(-)
(G7)
(H7)
SERVICE
(G8)
A+
(H10)
B-
(H8)
GROUND
(G10)
(G11)
(G12)
GND GND
RS422TX OPTION
(G9)
RS485
(RS422 RX)
(H9)
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
FGND
SGND
CHASSIS GROUND
GND
I33
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Stationary RVSS with M469 Relay
(Drawout also available)
PTBUS (POTENTIAL BUS) (FROM SWGR)
120V 3PH 60HZ
I
SR469
P1A
P2A
P3A
(G6)
(H6)
(G7)
(H7)
(G8)
(H8)
C0
C1
(G2)SR469(G1)
P1A
BP
(H1)SR469(H2)
C0
C3
P3A
P2A
C0
ISW 1FU
M
(X1)
GCT
K3
K13
K23 (X1) PM (X2)
K2
K12
K22
K11
K1
K2
(H1)
PT
(H2)
CPI (X1) (X2)
(23)
P11 P2
(24)
SSS SCR BASE
50/5
T3
PM
(X1) (X2)
2CT
PM(X2)
T2
PM
(X1) (X2)
1CT
T1
26N
26 GND
(G9)
K3
(H3)
50/5
GND
(H9)
2FU
2E
(G4)
GRB
CPI
P3
(15)
H15
(1)
TO SSS
(NOT FOR CUSTOMER USE)
T
XXXX/115V. (X4)
3FU
20A.
(2)
(19)
TEST NORMAL
CPI
TPI
(20) (22)(22) (21)
(4) (3)
H19
H20
(2) (1)
H21 (X1)
TPI
(23)
H23
X=CLOSED
H22
(16)
16
(X2)
(X3)
ALL CONTROL GNDS
ARE CONNECTED
VIA TB TO GND BUS
TSW
(G5)
C30
7
(H5)
C30
C33
TEST NORMAL
(7) (8)
17N
GND
PURCHASER'S TEST POWER
115V.
18
17
(5)
(1P11) M (1P12)
(6)
52
X=CLOSED
53
(2P11) M (2P12)
54
I34
C30
(H4)
C32
(H1) 750VA (H2)
(continued on next page)
(H3)
C31
GND
TSW
17
GND
C30
SR469
P13
P2
PM
(X1) (X2)
(G3)
(X3)(25)CPI(26)
IND.
MOTOR
50/5
SR469
GND
P1
K21
(X2)
PM
3CT
(X1) PM(X2)
(X1)
K1
C0
C5
L1
L2
L3
55
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Stationary RVSS with M469 Relay
(Drawout also available)
(continued from previous page)
17
7
I
CEMM
(3)
(33)
MX
(34)
27M
(2)
MX
(13)
17
(1)
(14)
7
13M
(1P1)
(4)
1P1M
M (1P2)
1P2M
(1) FLTR (2)
CEMBP
(3)
(2)
(13)
BPX
17
(1)
(14)
7
13BP
(1P1)
(4)
1P1BP
1P2BP
(1) FLTR (2)
(13)
LINK
BP (1P2)
CR
SSW
NORMAL
BYPASS
(1)
(2)
0X
(14)
LINK
1-2
1-3
1-4
1-5
1-6
1-7
1-8
2-1
2-2
X=CLOSED(MC)
SSS
(TB1-3) (TB1-4)
(TB1-2)
(TB1-5) (TB1-6)
(TB1-1)
(TB8-9)
(A1)
(TB8-10) (TB8-7)
MX
BPX
8-10
(1P7)
(TB8-8) (TB8-5)
(A1)
(A2)
M
8-7
(A2)
8-8
(1P11)
(TB8-6)
BP (1P12)
8-5
8-6
(1P8)
(2P5)
M
(TB2-1)
(TB2-2)
(TB1-9)
JP1
(TB8-3)
17
(TB8-4) (TB8-1)
(E1)
SR469
8-4
TRIP
NON-FAILSAFE
8-1
(1)
6A
8-2
LINK
RIL
(2)
LED
RUNNING
(2P6)
(TB8-2)
(F1)
8-3
(1)
8
7
7
(TB1-8)
MVC3-TCB
7
8-9
(TB1-7)
GIL
(2)
LED
STOPPED
17
17
(1)
4FU
3A.
(2)
27
17
(continued on next page)
I35
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Stationary RVSS with M469 Relay
(Drawout also available)
(continued from previous page)
27
17
I
27
1
PROVISION FOR REMOTE PERMISSIVE CONTACTS
START
(2)
(1)
STOP
(2)
(1)
1D
1E
3
SR469
BLOCK
NON-FAILSAFE
17
(A1)
1
R
T
D
(F12)
(A4)
(A16)
(A5)
2
R
T
D
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
3
R
T
D
(A9)
(A21)
(A10)
(A22)
(A23)
4
R
T
D
(A11)
(A24)
(A12)
(A13)
(A25)
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
___ OHMS
MATERIAL ___________
(A17)
5
R
T
D
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
NOTE: SR469 TO BE PROGRAMED IN FIELD BY OTHERS.
(A26)
(A14)
(A27)
6
(A15)
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(E3)
SR469
(F2)
F2
(D25)
8
(D27)
M (1P6)
(F3)
(D4)
(D26)
(1P5)
(D5)
R
T
D
(D6)
(D16)
D16
(D7)
(D8)
(D17)
(D20)
(D10)
(E5)
R
T
D
(D9)
(D19)
F3
R2 AUX.
NON-FAILSAFE
E3
SR469
(F4)
9
(D18)
R
10 T
D
E5
(E4)
E4
R3 AUX.
NON-FAILSAFE
F4
(E6)
SR469
(F5)
(D21)
F5
(D11)
(D22)
(D23)
(D12)
(D13)
(D24)
(D14)
(C1)
(D15)
(C2)
(C3)
(C4)
GROUND
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
(F6)
11 R
T
D
F6
R4 ALRM
NON-FAILSAFE
E6
R
12 T
D
(E9)
I36
SR469
(F8)
F8
(F9)
F9
(B1)
469-B1
(G12)
(G11)
GND
17
(H11)
(A2)
(A3)
(E12)
D23
(A2)
(F7) (E7)
R5
27
CR
M (1P4)
(1P3)
(H12)
(A1)
2
GND GND
R6 SERV
FAILSAFE
E9
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Drawout RVAT with M469 Relay
(Stationary also available)
(G6)
SR469
(H6)
C1
C0
(G7)
C3
TAPS 50-65-80%
TAP SET 65%
AT
N
(H2)
CPI
(24) (23) (X1) (X2)
P2
P11 P21
(1)
5FU
3A.
PM(X2)
PM(X2)
K3
(X1)
K2
(FB) (3B) (1B) (0B)
(2B)
K22
(FA) (3A) (1A)(0A)
(X1)
K11
K21
(X1) PM (X2)
(2A)
26N
26
(G9)
K2
(X1)
R (FC) (3C) (1C) (0C)
(2C)
K23
K13
K1
(H1)
PT
C0
50/5
GCT
1ST M 3ST
K12
3CT
T3
2CT
T2
1CT
T1
IND.
MOTOR
PM(X2)
GND
(H9)
GND
SR469
K3
(H3)
(H8)
C0
C5
ISW 1FU
K1
C0
(G8)
L1
L2
L3
I
(H7)
CPI
(X3) (25)
P23
(26)
P13
GND
(2)
2FU
(3)
5FU
3A.
(4)
(G2) SR469 (G1) (H1) SR469(H2)
P1
P2
P3
GND
(H1)
CPI
(19)
TEST NORMAL TPI
CPI
(20) (22)(22) (21)
(4) (3)
19
20
22
GRB
(H2)
T
XXXX/115V.
TSW
(15)
15
KVA
21
(X1)(X2)
ALL CONTROL
GNDS ARE CONNECTED
VIA TB TO GND BUS
TSW
TEST NORMAL
(7) (8)
(X3)(X4)
17N
17
(1P9) M (1P10)
GND
(1)
(2)
(23)
23
3FU
(2)
TPI
(1)
X=CLOSED
(16)
16
PURCHASER'S TEST POWER
115V.
18
(5)
9
(6)
10
(1P11) M (1P12)
11
X=CLOSED
12
(2P3) M (2P4)
61
60
(2P7) M (2P8)
62
7
63
17
(continued on next page)
I37
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Drawout RVAT with M469 Relay
(Stationary also available)
(continued from previous page)
17
7
CEM
(3)
I
(33)
27M
MX
(34)
1P2
(2)
(13)
MX
(1)
(14)
CPS
17
(1)
(2)
M51
M50
7
M
(1P1)
(4)
1P1
(1P2)
1P2
(1) FLTR (2)
SQR
(33)
(34)
M50
8C
(E5)
M50
SR469
SQR
(A1) (A2)
(F4)
17
8C
AUX.3
CONF. TRANSITION ON: 'CURRENT ONLY'
RED. VOLT START LEVEL: 125% FLA
RED. VOLT START TIMER: 30 SEC.
SQR
(13)
(14)
M50
(2P9) N (2P10)
1CEM
(3)
(2)
(21)
NX
(22)
17
(1)
13R
R51
R24
2R
1R
(13)
(1P7) M
(1P8)
(21)
SQR
(22)
8
7
(1P9)
R
(1P1)
(4)
2R
(1) FLTR (2)
NX
(14)
N29
N27
(3)
3REC
MOV (2)
(1)
R (1P10)
(1P2)
N25
N23
17
(4)
N
(2P1)
N26
(2P2)
N29
(1) FLTR (2)
NX
(A1) (A2)
17
N25
(1)
RIL
(2)
8
17
MOTOR
SPACE HTR.
6B
(2P5) M (2P6)
17
(1)
7
GIL
(2)
17
6B
1SPHTR
(1)
(2)
(2P9) M
6A
(2P10)
7
(1)
17
2SPHTR
(2)
6A
(1)
6A
3SPHTR
(2)
17
17
(1)
4FU
3A.
(2)
27
(continued on next page)
I38
17
GE Limitamp® Medium Voltage Motor Control
Typical Elementary Diagrams
800A Drawout RVAT with M469 Relay
(Stationary also available)
(continued from previous page)
27
17
I
1TST
2TST
(1)
(2) (1)
34C
34B
(2)
(1)
STOP(2)
34
2PB
START
LINK
(1)
1
3
(A1)
(2)
1PB
MX
(A2)
17
4
(1P3) M (1P4)
3
4
27
SR469 (E1) (F1)
(H12)
98
(F7) (E7)
99
(E9)(F8)
R1
R5
R6
(H11)
TRIP
BLOCK
SERVICE
(A1)
27
17
(A2)
(A3)
(E12)
1
R
T
D
(F12)
(A4)
2
(A16)
(A5)
R
T
D
(A17)
(A6)
(A18)
(A19)
(A7)
(A8)
(A20)
3
(A9)
(A21)
4
(A10)
(A22)
(A23)
R
T
D
R
T
D
(A11)
(A24)
(A12)
(A13)
(A25)
5
R
T
D
(A26)
___ OHMS
MATERIAL ___________
NOTE INSTALLER
A. DO NOT GROUND ANY RTD LEADS AT MOTOR.
IF ANY GROUND EXISTS AT MOTOR. IT MUST
BE LIFTED.
B. RTD SHIELDED CABLE SHIELDS ARE TO BE
GROUNDED AT THE SR469 MOTOR MANAGEMENT
RELAY ONLY. DO NOT GROUND SHIELDS AT MOTOR.
C. USE 3 CONDUCTOR SHIELDED CABLE BETWEEN
MOTOR AND MULTILIN SR469 RELAY.
NOTE: SR469 TO BE PROGRAMED IN FIELD BY OTHERS.
(A14)
(A27)
RTD 1 - 6 MOTOR STATOR
RTD 7 - 8 MOTOR BEARING
RTD 9 - 10 PUMP BEARING
RTD 11 PUMP CASE
RTD 12 AMBIENT
6
(A15)
R
T
D
(B2)
(D1)
(B3)
(B4)
(D2)
(D3)
7
R
T
D
(D25)
(D4)
(D26)
(1P5)
M
D23
8
(D27)
(D5)
(1P6) (D16)
(D6)
D16
(D7)
(D8)
(D17)
(D18)
(1P3)
D23
R
(1P4) (D19)
D19(D20)
(D21)
(D22)
FACTORY PROGRAM
GENERAL SW. A
- INPUT 1
- NAME: INCOMP. SEQ.
- NORMALLY CLOSED
- BLOCK INPUT FROM START: 1 SEC.
- ALARM: OFF
- TRIP: LATCHED
- TIME: 30 SECONDS
(D23)
(D9)
(D10)
(D14)
(C1)
(D15)
(C2)
MULTILIN
GE POWER MANAGEMENT
TECHNICAL SUPPORT
TEL: (905) 294-6222
FAX: (905) 201-2098
(C3)
(C4)
GROUND
R
T
D
R
10 T
D
(D11)
(D12)
(D13)
(D24)
9
R
T
D
(B1)
11 R
T
D
R
12 T
D
469-B1
(G12)
(G11)
GND
GND GND
I39
GE Limitamp® Medium Voltage Motor Control
Guideform Specifications
Controllers-CR194 Vacuum Stationary &
Drawout Contactors, 2400 -7200 Volts
One-high line-up of NEMA ____ enclosure(s) equipped with
(1000)(2000)(3000) amp horizontal AC power bus
General
These specifications cover NEMA Class E2 high-voltage
control for ____ volts, ____ phase, ____ Hertz as follows:
The power bus shall be braced for 80 kA RMS asymmetrical
or 50 kA RMS symmetrical.
Controller #1:
(Full voltage)
(Reduced voltage)
(Non reversing) controller for
(Reversing)
(Squirrel-cage induction)
(Wound-rotor induction)
(Brush-type synchronous)
(Brushless synchronous)
motor rated at ____ horsepower.
Controller #2, etc. (as shown above)
All Controllers
Controller(s) shall be fused type employing current-limiting
sand power fuses that give the controller an interrupting
rating of:
200 MVA, 3 phase symmetrical at 2400 Volts, 50/60 Hz
350 MVA, 3 phase symmetrical at 4200 Volts, 50/60 Hz
400 MVA, 3 phase symmetrical at 4800 Volts, 50/60 Hz
600 MVA, 3 phase symmetrical at 7200 Volts, 50/60 Hz
Contactors
Starter(s) shall employ magnetically held vacuum contactor(s)
rated at:
for welded enclosure:
400 amperes at 7200 volts maximum, interrupting rating of
75 MVA, 3 phase symm.
800 amperes at 5000 volts maximum, interrupting rating of
75 MVA, 3 phase symm.
for bolted enclosure:
400 amperes at 5000 volts maximum, interrupting rating of
50 MVA, 3 phase symm.
Contactor(s) shall be stationary (drawout for 400 amp contactor only) and the coil shall be removable without removing
the contactor from the enclosure. The vacuum interrupter
wear checks shall not require removal of the contactor.
Controller(s) shall be in a:
for welded enclosure:
One-high line-up of NEMA ____ enclosure(s) equipped with
3-ph (1200)(2000)(3000) amp horizontal AC bus
One-high individual NEMA ____ enclosure(s) equipped with
provisions for terminating incoming cable
for bolted enclosure:
Two-high line-up of NEMA ____ enclosure(s) equipped with
(1000)(2000)(3000) amp horizontal AC power bus
For safety to personnel, enclosure(s) shall be compartmented
into low-voltage control compartment with separate door,
high-voltage compartment with separate interlocked door,
AC bus compartment with protective barriers and cable
entrance compartment.
The controller shall be isolated by a quick-make quick-break
switch operated by an externally mounted operating handle.
The isolating device shall disconnect the secondary of the
control power transformer before opening the main circuit
contacts.
Mechanical interlocks shall be provided to prevent:
1. Closing the isolation switch with the high-voltage door open.
2. Operation of the isolation switch while under load.
3. Opening of the high-voltage door when isolation switch is on.
4. Operation of the contactor when the isolation switch is in
an intermediate position.
Note: For overload protection, one three-pole ambient-compensated thermaloverload relay, manually reset, shall be included.
Controllers rated 400 and 800 amperes shall be rated 60 kV
Basic Impulse Level (BIL).
Options
Each controller shall contain protection against single-phasing
due to a blown fuse and shall have blown fuse indication.
(Solid-state relay protection)
(Latched contactors)
Control for Wound-rotor Induction Motors
Secondary control shall be fully magnetic. It shall provide
automatic acceleration through ____ starting steps with
uniform torque peaks using a NEMA Class ____ resistor.
The control shall provide for continuous speed regulation
with ____ points of speed reduction with a maximum
reduction of ____ % from full-load speed at ____ % full load
torque.
Control for Synchronous Motors
DC field control for synchronous motors shall consist of one
GE Multilin SPM starting and protection module equipped
with digital displays for power factor, field current and line
current, one field starting and discharge resistor and one
electronic field contactor. Operation must be fully automatic.
J1
J
GE Limitamp® Medium Voltage Motor Control
Guideform Specifications
J
Static field supplies shall be:
(tapped transformer static field contactor [SFC])
(adjustable silicon controlled rectified variable field contactor
[SCR type VFC])
(adjustable VFC with power factor regulation)
(adjustable VFC with field current regulation)
Additional Functions
Control power at 120 volts shall be provided from a control
power transformer in each controller. The transformer shall be
protected by current-limiting fuses. Controller(s) shall provide
instantaneous undervoltage protection when momentary
contact push button is used, undervoltage release when
maintained contact push button is used.
(Push button)
is to be (mounted on door)
(Switch)
(remotely located)
Finish
Finish shall be:
(ANSI-61 light gray over rust-resistant phosphate undercoat
for indoor use.)
(ANSI-61 light gray over one or more rust-resistant phosphate undercoats for outdoor use.)
Controllers - CR7160 Vacuum Or Air-Break
Draw Out, 2400-7200 Volts
FOR REPLACEMENT APPLICATIONS ONLY
General
These specifications cover NEMA Class E2 high-voltage control for ____ volts, ____ phase, ____ Hertz motors as follows:
Controller #1:
(Full voltage)
(Reduced voltage)
(Non reversing) controller for
(Reversing)
(Squirrel-cage induction)
(Wound-rotor induction)
(Brush-type synchronous)
(Brushless synchronous)
motor rated at ____ horsepower.
Controller #2, etc. (as shown above)
All Controllers
Controller(s) shall be fused type employing current-limiting
power fuses that give the controller an interrupting rating of:
200 MVA, 3-phase symmetrical at 2400 volts, 50/60 Hz
350 MVA, 3-phase symmetrical at 4200 volts, 50/60 Hz
400 MVA, 3-phase symmetrical at 4800 volts, 50/60 Hz
600 MVA, 3-phase symmetrical at 7200 volts, 50/60 Hz
Starter(s) shall employ (vacuum) (magnetic air-break) line
contactor(s) rated 400 amperes, 5000 volts and have an
interrupting capacity of 50 MVA, 3-phase, symmetrical.
J2
Starter(s) shall employ magnetic air-break line contactor(s)
rated 700 amperes, 5000 volts and have an interrupting
capacity of 80 MVA, 3-phase symmetrical.
Controller(s) shall be in a:
one-high line-up of NEMA ____ enclosures with 3-phase
(1000 amp) (2000 amp) AC power bus.
free-standing one-high individual NEMA ____ enclosure(s)
with provision for terminating incoming cable.
two-high construction with NEMA ____ enclosure*, and with
3-phase (1000 amp) (2000 amp) AC power bus.
three-high construction with NEMA ____ enclosure*, and
with 3-phase (1000 amp) (2000 amp) AC power bus.
For safety to personnel, enclosure(s) shall be compartmented
into low-voltage control compartment with separate door,
high-voltage compartment with separate interlocked door,
AC bus compartment with protective barriers and cable
entrance compartment.
Line contactors shall be draw out type.
The controller shall be isolated by externally operated drawout
stabs with shutter mechanism. The isolating device shall
also open the secondary of the control power transformer.
Interlocks shall be provided to prevent (1) inadvertent operation
of the isolation mechanism underload, (2) opening the highvoltage compartment door without isolating the starter, and
(3) closing the isolation switch with door open.
Note: For overload protection, one three-pole ambient-compensated thermal
overload relay, hand-reset, shall be included.
Options
(Solid-state relay protection)
(Anti-single-phase trip bar)
(Mechanical latching)
Control for Wound-rotor Induction Motors
Secondary control shall be fully magnetic. It shall provide
automatic acceleration through ____ starting steps with
uniform torque peaks using a NEMA Class ____ resistor.
The control shall provide for continuous speed regulation
with ____ point of speed reduction with a maximum
reduction of ____ percent from full-load speed at ____ %
full-load torque.
Control for Synchronous Motors
DC field control for synchronous motors shall consist of one
GE-Multilin SPM starting and protection module equipped
with digital displays for power factor, field current and line
current, one field starting and discharge resistor and one
magnetic field contactor. Operation must be fully automatic.
GE Limitamp® Medium Voltage Motor Control
Guideform Specifications
Static field supplies shall be:
(tapped transformer SFC - Static Field Contactor)
(adjustable SCR type VFC - Variable Field Contactor)
(adjustable SCR type VFC with power-factor regulation)
(adjustable SCR type VFC with field current regulation)
Additional functions
Control power at 120 volts shall be provided from a controlpower transformer in each controller. Transformer shall be
protected by current-limiting fuses.
Controller(s) shall provide instantaneous undervoltage protection when momentary-contact push button is used,
undervoltage release when maintained-contact switch is used.
(Push button)
(Switch)
is to be (mounted on door).
(remotely located).
Finish
Finish shall be:
(ANSI-61 light gray over rust-resistant phosphate undercoat
for indoor use.)
(ANSI-61 light gray over one or more rust-resistant phosphate
undercoats for outdoor use.)
Starters - CR194 Vacuum
All Starters
Enclosure
Connections
Incoming Line
Motor Cable
NEMA Type 1 general purpose, ventilated
Entrance top or bottom. Cables separated by barrier from both low- and
high-voltage compartments.
Entrance top or bottom. Cables separated
by barrier from both low- and highvoltage compartments.
relay, hand-reset
1- NORMAL-TEST selector switch
1- Control-circuit fuse
J
On door
1- START-STOP push button, oil-tight, flush-mounted
Full-Voltage Reversing (FVR)
Same as for full-voltage non-reversing with addition of following:
Auxiliary enclosure
2- Three-pole vacuum contactors for reversing
On door
1- FORWARD-REVERSE-STOP push button, oil-tight, flushmounted (replacing START-STOP push button)
Reduced-Voltage Non-Reversing (RVNR) (Primary Reactor)
Same as for full-voltage non-reversing with addition of following:
1- Three-pole vacuum contactor used as a RUN contactor
Auxiliary enclosure (1-high)
1- Reduced-voltage starting reactor with taps for 50-, 65and 80-percent line voltage
Low voltage compartment
1- Definite time transfer relay
Reduced-Voltage Non-Reversing (RVNR)
(Autotransformer closed transition)
Same as for full-voltage non-reversing with addition of following:
1- Three-pole vacuum contactor used as a RUN contactor
Auxiliary enclosure (1-high)
2- Three-pole vacuum contactor - neutral, and 80-percent
line voltage
Low-voltage compartment
1- Definite time transfer relay
Wound-Rotor-Motor Starters
Squirrel-Cage-Motor Starters
Full-Voltage Non-Reversing (FVNR)
High-voltage compartment
1- Set of bolt-in current-limiting fuses and supports
1- Externally operated disconnect switch
1- Three-pole vacuum contactor
1- Set of mechanical interlocks to prevent opening the disconnect
when the contactor is on, to prevent opening the door when
the disconnect is on, to prevent closing the contactor when
the disconnect is in an intermediate position, and to prevent
closing of the disconnect when the high-voltage door is open
1- Fused primary control power transformer (CPT)
3- Current transformers
3- Terminals for motor cable connections
Low-voltage compartment
1- Three-pole, ambient-compensated thermal overload
Non-Reversing
Same as for squirrel-cage FVNR with addition of following:
Secondary enclosure
1- Set of intermediate accelerating contactors
1- Final accelerating contactor
1- Set of definite time accelerating relays
Resistor enclosure
1- Set of starting-duty resistors, NEMA Class 135
Reversing
Same as for non-reversing with addition of following:
High-voltage compartment
1- Three-pole vacuum contactor used for reversing
On door
1- FORWARD-REVERSE-STOP push button, oil-tight, flushmounted (replacing START-STOP push button)
J3
GE Limitamp® Medium Voltage Motor Control
Guideform Specifications
J
Brush-Type Synchronous-Motor Starters
Brushless, Synchronous-Motor Starters
Full-Voltage Non-Reversing (FVNR)
Same as for squirrel-cage FVNR with addition of following:
Low voltage compartment
1- Field application and discharge contactor
Full-Voltage Non-Reversing (FVNR)
Same as for squirrel-cage FVNR with addition of following:
Low voltage
1- Brushless-exciter field supply (7 amps maximum)
On door
1- GE-Multilin SPM solid-state synchronizing device for precision-angle field application, load-angle field removal and
squirrel-cage protection with built-in digital power factor and
line ammeter
1- Line amps display - digital readout (part of GE-Multilin SPM)
1- Field amps display - digital readout (part of GE-Multilin SPM)
Compartment
1- Variable autotransformer for exciter field supply
On top
1- Field starting and discharge resistor
On door
1- GE Multilin SPM solid-state synchronizing device for precision
time-delay field application, load-angle field removal and
squirrel-cage protection with built-in digital power factor
and line ammeter
1- Line amps display - digital readout (part of GE Multilin SPM)
1- Field amps display - digital readout (part of GE Multilin SPM)
Reduced-Voltage Non-Reversing (RVNR)
Same as for full-voltage non-reversing with addition of preceding
reduced voltage sections contactor
Reduced-Voltage Non-Reversing (RVNR)
Same as for full-voltage non-reversing with addition of preceding
reduced voltage sections
Note: Drawout contactor available only for FVNR applications.
J4
Information contained in this application guide is based on established industry
standards and practices. It is published in the interest of assisting in the
preparation of plans and specifications for medium voltage motor control.
Neither the General Electric Company nor any person acting on its behalf
assumes any liability with respect to the use of, or for damages or injury
resulting from the use of any information contained in this application guide.
GE Consumer & Industrial
41 Woodford Avenue
Plainville, CT 06062
© 2007 General Electric Company
www.geelectrical.com
imagination at work
GET-6840C (01/08)