Intrerupatoare automate de medie tensiune

Intrerupatoare automate de medie tensiune
Circuit breakers
SF
1 to 40.5 kV
SF6 switchgear
SF
circuit breakers
1 to 40.5 kV
contents
page
SF6 gas
the universal technology
2
for medium voltage
the switchgear manufacturers' gas
3
breaking technique
auto-compression technique
4
operating
5
general
a high-performance
6
and reliable range
certified quality: ISO 9001
7
electrical characteristics
8
description
SF1 circuit breaker
10
SFset circuit breaker
11
SF2, ISF2, circuit breaker
12
auxiliaries
13
operating mechanisms
and diagrams
SF1/SFset circuit breaker
14
SF2 circuit breaker
16
protection and control/monitoring
protection units
18
VIP13 protection unit
20
VIP17 protection unit
21
VIP200/VIP201 control units
22
time/current curves
25
dimensions
SF1, SFset
28
SF2, ISF2
30
identification of units
examples of rating plates,
31
inspection sheet
order information
32
Merlin Gerin
MV distribution
1
SF circuit breakers, 1 to 40.5 kV
SF6 gas
the universal technology for medium voltage
mastering difficult currents
The absence of overvoltages is one of the
numerous advantages of the SF6 breaking
technique, eliminating the need for arresting
devices to reduce switching surges.
Short-circuit currents
The short duration of the arc in the breaking
chamber and the rapid recovery of the SF6
dielectric properties enable SF6 switchgear
to break fault currents up to 50 kA rms.
Capacitive currents
SF6 switchgear does not provoke multiple
restrikes. Capacitive currents (lines,
unloaded cables, capacitor banks) can
therefore be interrupted without creating
overvoltages that could damage equipment
connected to the network.
Low inductive currents
Using the SF6 breaking technique, the
chopping current, resulting from the
instability of the arc at low currents, is
reduced to a very low level. The
corresponding overvoltage is therefore
considerably reduced to a level that cannot
damage equipment.
Numerous tests carried out in national and
international laboratories have shown that
multiple restrikes (opening) or prestrikes
(closing) do not occur with SF6 switchgear.
SF6 switchgear ensures surge-free
breaking, eliminating successive dielectric
breakdowns and the need for surgearresting devices.
the experience of a major
manufacturer
Given its pioneer work in the puffer-type SF6
technique, Merlin Gerin naturally played a
decisive role in developing further
applications of the technique.
Merlin Gerin is today one of the foremost
manufacturers of SF6 switchgear, with:
■ more than twenty years of industrial
experience using SF6 techniques,
■ more than 500 000 switchgear units
installed around the world,
It has developed a wide range of highperformance and reliable units, operating
faultlessly on all five continents.
The company continuously innovates to
improve performance levels. In 1989, it
introduced a product based on a new
concept, the SFset circuit breaker with
integrated protection functions.
SF6 switchgear is thus capable of meeting
the most demanding requirements of public
and industrial distribution networks worldwide, up to 40.5 kV.
2
MV distribution
Merlin Gerin
the switchgear manufacturers’ gas
F
F
F
F
S
a widely available gas
sealed pressure system
Like all gases in current use, SF6 is
available in all countries of the world.
SF6 is non-toxic.
All Merlin Gerin switchgear is of the sealed
pressure system type in accordance with the
IEC 56 definition (appendix EE).
Enclosures are filled to a low relative
pressure of 0.05 to 0.35 MPa (0.5 to
3.5 bars).
The seal and the for-life lubrication of the
rotary seals is provided by an oil film.
In the MV circuit breaker field, for example,
on more than 20 000 SF6 switchgear units
installed by the French electrical utility
(EDF), the annual fault rate related to seal
problems is less than 0.05 %.
a non-inflammable gas
SF6 is an inert gas and does not sustain
combustion.
a very stable gas
F
F
The high stability of SF6 gas is due to the
6 covalent bonds of its molecule.
an insulating gas
The dielectric strength of SF6 is superior to
that of most known media, reaching 5 times
that of air at a pressure of a few tenths
of MPa.
a breaking gas
SF6 is "the" breaking gas offering a number
of advantages:
■ high capacity for carrying the heat
produced by the arc. The arc is rapidly
cooled by convection during arcing;
■ high radial thermal conduction and
high electron capturing capacity;
when the current passes through zero:
■ the SF6 permits rapid heat exchange from
the centre of the arc towards the exterior,
■ the fluorine atoms, which are highly
electro-negative, act as veritable "traps" for
electrons; since it is the electrons which are
mainly responsible for electric conduction in
the gas, the gap between the contacts
recovers its initial dielectric strength through
this electron capture phenomenon at current
zero.
endurance
The mechanical and electrical endurance of
Merlin Gerin SF6 switchgear is far above
that recommended by the IEC.
This equipment meets the needs of power
networks, even those operating under the
most severe conditions.
very low maintenance
The electrical contacts, housed in a sealedfor-life enclosure, require no special
maintenance.
The operating mechanism requires only
minimum maintenance at intervals
depending on the conditions of use.
Under normal operating conditions, no
preventive maintenance is required before
10 000 operations or 10 years of service.
anticipated service life:
more than 30 years
The breaking system is designed to operate
without maintenance for many years with in
particular:
■ no need for any SF6 refilling throughout
the service life of the unit, thanks to SF6 gas
recombination after breaking,
■ no continuous pressure monitoring.
insensitivity to the
environment
In addition to the active parts (for breaking),
the sealed enclosure contains the essential
mechanical parts (for mechanical
transmission).
The result is a fully insulated system.
Furthermore, the long creepage distances of
the insulated enclosures contribute to high
insensitivity to the outside environment.
Merlin Gerin
MV distribution
3
SF circuit breakers, 1 to 40.5 kV
breaking technique
auto-compression technique
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Upper current terminal.
Insulating enclosure.
Fixed main contact.
Fixed arcing contact.
Moving arcing contact.
Insulating nozzle.
Moving main contact.
Moving piston.
Pressure chamber.
Lower current terminal.
Connecting rod.
Crank.
Sealing system.
Shaft.
Molecular sieve.
Bottom cover.
pole-unit description
The SF pole unit consists of:
■ a main circuit with:
■ upper current terminal (1),
■ fixed main contact with self-wiping blades
(3),
■ moving main contact (7),
■ lower current terminal (10);
■ a breaking circuit with:
■ fixed arcing contact (4),
■ moving arcing contact (5);
■ an auto-compression system with:
■ pressure chamber (9),
■ moving piston (8),
■ insulating nozzle (6);
■ a transmission mechanism with:
■ shaft (14),
■ crank (12),
■ connecting rod (11);
■ a sealing system (13) of the "sealed
pressure system" type according to the
definition in IEC 56 appendix EE;
■ an insulating enclosure (2) containing all
the active components, including:
■ SF6 at low relative internal pressure,
■ molecular sieve (15),
■ bottom cover (16).
11
principle
12
13
14
15
16
4
MV distribution
Simplicity
The movement of the arcing contacts
compresses a small volume of gas behind a
piston. The compressed gas is trapped and
cannot escape between the arcing contacts
until they begin to separate.
This pre-compression stage produces an
instantaneous difference in pressure making
it possible to inject the gas by forced
convection.
Efficiency
Injection of a small quantity of gas between
the contacts suffices to “ smother ” the arc
by electron capture. This technique breaks
low currents and short-circuit currents with
equal effectiveness.
Clogging effect
During breaking of heavy currents, the
cross-section of the arc is equal to that of
the inside of the injection nozzle at full
breaking capacity, which considerably
reduces the flow of the injected gas. That is
the clogging effect.
The phenomenon has two beneficial results:
■ storage, before the current passes through
zero, of almost all the compressed gas;
■ limiting of the arcing energy by the braking
of the moving parts, thus limiting the length
of the arc.
Moreover, during breaking of low currents,
the mass flowrate is reduced and breaking is
surge-free.
Merlin Gerin
operation
fig. 1
SF6 circuit breakers use the SF6 autocompression technique.
The main contacts and the arcing contacts
are initially closed (fig. 1).
Pre-compression (fig. 2)
When the contacts begin to open, the piston
slightly compresses the SF6 gas in the
pressure chamber.
The arcing period (fig. 3)
The arc then forms between the arcing
contacts. The piston continues its downward
movement. A small quantity of gas, directed
by the insulating nozzle, is injected onto the
arc.
For the breaking of low currents, the arc is
cooled by forced convection.
However, for high currents, thermal
expansion transfers the hot gases toward
the cold parts of the pole unit.
Due to the dielectric properties of SF6, the
gap between the two arcing contacts is
sufficient at the first current zero to
definitively interrupt the current.
Sweeping overstroke (fig. 4)
The moving parts finish their travel and the
injection of cold gas continues until the
contacts are completely open.
fig. 2
fig. 3
fig. 4
Merlin Gerin
MV distribution
5
SF circuit breakers, 1 to 40.5 kV
general
a high-performance and reliable range
wide choice
Progress and innovation in SF6 technology
has led to a number of important
breakthroughs in the field of MV
switchgear.
The high performance levels and the
reliability of Merlin Gerin circuit breakers are
largely a result of the remarkable properties
of SF6 gas.
The many ways of implementing SF6
technology have led to a wide range of
switchgear units.
flexible installation
Small in size, SF6 switchgear is available in
a number of versions:
■ basic fixed units;
■ fixed units on support frames;
■ withdrawable units (please consult us).
Most can be equipped with either front or
side operating mechanisms.
intelligent and autonomous
SF1 and SF2 circuit breakers
SF1 and SF2 circuit breakers are used with
the standard protection units (Sepam,
Statimax).
SFset circuit breakers
SFset circuit breakers integrate, in a single
unit, the different functions customarily found
in separate compartments.
They are equipped with a fully autonomous
protection system, operating without any
auxiliary source and including:
■ a set of current sensors installed on the
lower terminal of the pole unit;
■ a VIP electronic protection unit;
■ a low-consumption Mitop release.
The various types of units available make it
possible to implement multifunction
protection systems.
6
MV distribution
Merlin Gerin
certified quality: ISO 9001
a major advantage
In each of its sites, Merlin Gerin has set up a
functional organisation vested with the
responsibility of verifying quality levels and
ensuring correct implementation of
standards.
Company procedures are:
■ uniform throughout all departments;
■ recognised by numerous customers and
inspection organisations such as the French
Electrical Authority, Framatome, SSIA
(French Military Procurement Surveillance),
General Electric, etc.
Furthermore, it is the rigorous application of
procedures that has enabled certification by
an independent organisation, the French
Association for Quality Assurance (AFAQ).
The quality system of the MV department
has been certified for conformity with the
ISO 9001 quality assurance standard.
severe and systematic
inspections
During production, each circuit breaker
undergoes routine testing to ensure quality
and conformity. The following points are
checked:
■ pole-unit seals;
■ mechanical operation of the unit and any
associated locking systems;
■ simultaneous closing of contacts;
■ insulation level at industrial frequency;
■ resistance of the main circuit;
■ insulation level of auxiliary circuits;
■ electrical resistance of the auxiliary
circuits;
■ operating speed;
■ operating cycle;
■ operating times.
Results are indicated on the test certificate
for each unit.
Merlin Gerin
MV distribution
7
SF circuit breakers, 1 to 40.5 kV
general (cont.)
electrical characteristics
type
SF1 circuit breaker
CEI 56, VDE 0670, BS 5311, UTE C 64-100/101
rated voltage (kV 50/60 Hz)
insulation level
kV rms 50 Hz-1 min
kV impulse 1.2/50 µs
rated current
400
la (A)
630
1250
2500
3150
i 17,5
breaking capacity
at (kV) :
Isc (kA rms)
24
36
40,5
making capacity (kA peak)
short-time withstand current (kA rms-3s)
capacitor breaking
for Ia (A) :
400
capacity
630
(A)
1250
2500
3150
rated operation
O-3 min-CO-3 min-CO
sequence
O-0.3 s-CO-15 s-CO
O-0.3 s-CO-3 min-CO
approximate operating
opening
times (ms)
breaking
closing
17.5
38
95
24
50
125
36
70
170
■
■
■
■
■
■
■
■
■
■
■
■
12.5
20
25
31.5
12.5
280
440
875
50
20
280
440
875
63
25
280
440
875
■
■
■
■
■
■
12.5 16
20
25
31.5
12.5
280
440
875
40
16
280
440
875
50
20
280
440
875
63
25
■
■
■
■
■
12.5
20
25
31.5
12.5
280
440
875
50
20
280
440
875
63
25
280
440
875
■
■
■
■
■
■
■
■
■
50
65
70
50
65
70
50
65
70
15.5 (2)
1
50
110
25.8 (1) (2)
1
60
150
■
■
■
■
■
25
25
25
25
25
25
68
68
68
ANSI C37.04-C37.06-C37.09
rated maximum voltage
rated voltage range
rated insolation level
rated continuous current
kV, 60 Hz
K factor
kV, rms. 60 Hz-1 mn
kV, impulse 1,2/50 µs
A
600
1200
2000
3000
kA, rms.
rated short-circuit current
(at rated max kV)
rated maximum
kA, rms
symmetrical interrupting
capability and rated short-time current
closing and
kA, crest
latching capability
(2.7 K times rated short-circuit current)
rated interrupting time
cycles 60 Hz
rating operation
CO-15 s-CO
sequence
38 (4)
1
80
150
5
5
5
■
■
■
(1) Please consult us.
(2) This values are valid for outdoor installations.
(3) Above 24 kV, the SFset is equipped with conventional current transformers.
(4) Indoor installations.
(5) Interphase barriers.
(6) Only in fix installations.
8
distribution MT
Merlin Gerin
SFset
circuit breaker with integrated protection unit
17.5
38
95
SF2 circuit breaker
36(3)
70
170
24
50
125
■
■
■
■
■
■
■
■
■
■
■
■
■
ISF2 switch
24
50
125
36
70
170
40.5
85
185
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
20
16
20
25
12.5
25
31.5
63
25
280
440
875
31.5
12.5
280
440
875
40
16
280
440
875
50
20
280
440
875
63
25
280
440
875
31.5
12.5
280
440
875
31.5
12.5
1750
63
25
79
31.5
280
440
875
1750 1750
100
40
280
440
875
1750
2200
31.5
40
63
25
79
31.5
280
440
875
1750
100
40
280
440
875
1750
2200
1750
■
31.5
79
31.5
■
■
■
■
■
■
■
■
■
■
■
■
■
50
65
70
50
65
70
50
65
70
50
65
70
50
65
70
50
65
70
25.8(1)(2)
1
60
150
■
31.5
25
■
■
38(1)(2)
1
80
200
79
31.5
25
63
25
■
■
80
150
■
■
■
■
■
■
25
25
31.5
40(1)
25
25
31.5
40(1)
68
68
85
108
5
5
5
5
■
■
■
■
■
■
Merlin Gerin
■
■
40
12.5
50
20
280
440
875
■
■ (6)
25
12.5
31.5
12.5
280
440
875
40.5
85
185(5)
■
■
■
12.5
24
50
125
■
distribution MT
9
SF circuit breakers, 1 to 40.5 kV
description
SF1 circuit breaker
application
The SF1 is a 3-pole MV circuit breaker for
indoor installation.
It is used primarily for switching and
protection of 1 to 36 kV public, industrial
and commercial distribution networks.
All standard protection units (Sepam,
Statimax) may be used with the SF1 circuit
breaker.
Note that it may also be equipped with an
integrated protection system to form a fully
autonomous circuit breaker (see the SFset).
technology
Basic fixed SF1.
Basic fixed SF1.
The SF1 implements the auto-compression
technique using SF6 gas as the current
interruption and insulation medium.
The SF1 is available in three versions:
■ basic fixed unit;
■ fixed unit with a support frame;
■ withdrawable unit (please consult us).
Each version can be equipped with an
operating mechanism installed on the right
side, left side or in front.
The basic fixed unit comprises:
■ three independent main poles that are
mechanically connected; each comprises:
■ an insulating enclosure of the "sealed
pressure system" type (in compliance with
IEC 56, 1987 edition, appendix EE) forming
a hermetic assembly filled with SF6 at a low
relative pressure (0.05 MPa, i.e. 0.5 bars or
0.2 MPa depending on system
characteristics);
■ active parts housed in the insulating
enclosure;
■ an RI-type stored-energy operating
mechanism (see the "operating mechanism"
section);
■ a front panel with all the controls and
indicators;
■ upstream and downstream terminals for
connection of the power circuits.
The fixed unit with a support frame
comprises:
■ the basic fixed unit described above;
■ a support frame fitted with:
■ rollers for handling and installation;
■ lugs for securing to the floor.
options(1)
For each version, options include:
■ an electrical RI operating mechanism;
■ a device for locking the circuit breaker in
the open position (via a keylock);
■ a keylock for the locking option;
■ a pressure switch for each pole,
equipped with an NO contact for continuous
monitoring of the SF6 (please consult us);
(1) The "operating mechanism" section describes other
specific auxiliaries.
10
MV distribution
Merlin Gerin
SFset circuit breaker
application
The SFset is a 3-poles MV circuit breaker
for indoor installation.
It is used primarily for switching and
protection of 1 to 36 kV public, industrial
and commercial distribution networks.
The SFset is equipped with an integrated
protection system that is fully autonomous
(with VIP type protection unit), operating
without an auxiliary power supply (see the
“protection and
control/monitoring” section).
technology
Basic fixed SFset.
Schematic diagram of the SFset
SF1
1
Mitop
CS
VIP
2
The SFset implements the autocompression technique using SF6 gas as
the current interruption and insulation
medium.
The SFset is available in two versions:
■ basic fixed unit;
■ fixed unit with a support frame.
Each version can be equipped with an
operating mechanism installed on the right
side, left side or in front.
The basic fixed unit comprises:
■ a SF1 circuit breaker;
■ an autonomous protection system
comprising:
■ 2 or 3 functional current sensors (2)
installed on the lower current terminals of
the pole units;
■ a VIP electronic protection unit installed
on the operating mechanism enclosure,
■ a "Mitop" low-consumption opening
release installed on the circuit breaker.
The fixed unit with a support frame
comprises:
■ the basic fixed unit described above;
■ a support frame fitted with:
■ rollers for handling and installation,
■ lugs for securing to the floor.
options(1)
For each version, options include:
■ a device for locking the circuit breaker in
the open position (via a keylock);
■ a keylock for the locking option;
■ a pressure switch for each pole,
equipped with an NO contact for continuous
monitoring of the SF6 (please consult us).
(1) The "operating mechanism" section describes other
specific auxiliaries.
(2) For voltages 24 kV, units are fitted with conventional
current transformers (please consult us).
Merlin Gerin
MV distribution
11
SF circuit breakers, 1 to 40.5 kV
description (cont.)
SF2, ISF2 circuit breaker
application
The SF2 is a 3-pole MV circuit breaker for
indoor installation.
It is used primarily for switching and
protection of 24 to 38 kV public and
industrial distribution networks.
All standard protection units (Sepam,
Statimax) may be used with the SF2
(please consult us).
special application
ISF2 is a 3-pole indoor switch-circuit
breaker. Designed to withstand high
operating rates, it is especially suitable for
the control of electric furnaces. It can switch
50.000 times with a maintenance program to
be defined in accordance with operating
conditions.
technology
Fixed SF2 with support frame.
The SF2 implements the auto-compression
technique using SF6 gas as the current
interruption and insulation medium.
The SF2 is available in three versions:
■ basic fixed unit;
■ fixed unit with a support frame;
■ withdrawable unit (please consult us).
The basic fixed unit comprises:
■ three independent main poles that are
mechanically connected. Each comprises:
■ an insulating enclosure of the "sealed
pressure system" type (in compliance with
IEC 56, 1987 edition, appendix EE) forming
a hermetic assembly filled with SF6 at a low
relative pressure (0.35 MPa, i.e. 3.5 bars);
■ active parts housed in the insulating
enclosure;
■ an GMh-type stored-energy operating
mechanism (see the "operating mechanism"
section);
■ a front panel with all the controls and
indicators;
■ upstream and downstream terminals for
connection of the power circuits.
The fixed unit with a support frame
comprises:
■ the basic fixed unit described above;
■ a support frame fitted with:
■ rollers for handling and installation,
■ lugs for securing to the floor.
options (1)
For the basic fixed unit or the fixed unit
with support frame, options include:
■ a device for locking the circuit breaker in
the open position (via a keylock);
■ a keylock for the locking option;
■ a pressure switch for each pole, for
continuous monitoring of the SF6.
1) The "operating mechanism" section describes other
specific auxiliaries.
12
MV distribution
Merlin Gerin
auxiliaries
Single shunt opening release
for SF1, SFset and SF2.
Auxiliary contact block
for SF1, SFset and SF2.
Double shunt opening release
for SF1, SFset and SF2.
Auxiliary contact block
for SF2.
Undervoltage opening release
for SF1, SFset and SF2.
"End of charging" and "Operating mechanism charged"
auxiliary contact block for SF1, SFset and SF2.
"Mitop" opening release for SF2.
Merlin Gerin
MV distribution
13
SF circuit breakers, 1 to 40.5 kV
operating mechanisms and diagrams
SF1 and SFset circuit breakers
SF1 and SFset circuit breakers are actuated
by an RI operating mechanism that ensures
operating speeds (opening and closing)
independent of operator action.
When equipped with an electrical operating
mechanism, the circuit breaker can take on
remote control functions and implement
reclosing cycles.
manual RI operating
mechanism
The basic version of the circuit breaker
comes with a manual RI operating
mechanism comprising:
■ a stored-energy mechanism (spring
type) that stores the energy required to close
and open the contacts;
■ a spring charging system using a built-in
lever;
■ a mechanical "opening/closing"
actuated by two pushbuttons on the front
panel;
■ an electrical "opening" system including
an opening release(2);
■ an "operating mechanism charged"
indication contact;
■ an "end of charging" contact;
■ a block with auxiliary contacts(3);
■ a black/white mechanical "open/closed"
position indicator;
■ a terminal block for connection of external
auxiliary circuits;
■ a cover to protect the operating
mechanism.
Electrical RI operating mechanism.
electrical RI operating
mechanism
The electrical RI operating mechanism,
available on request, is made up of the
manual RI operating mechanism with the
following equipment added in the factory:
■ an electrical "closing" system with a
closing release and an anti-pumping relay;
■ an electrical spring charging device
(motor-driven) that automatically recharges
the mechanism as soon as the contacts are
closed;
■ an operations counter.
options (1)
The following options are available for the
manual RI operating mechanism:
■ an electrical "closing" system including
a closing release;
■ an operations counter;
■ the common auxiliaries (see below).
The following common auxiliaries are
available for both the manual and electrical
RI operating mechanism:
■ an additional opening release(2) (see
combination possibilities below);
■ for the undervoltage release:
■ a mechanical time delay for opening,
adjustable from 0 to 3 seconds,
■ a mechanism enabling the closing of the
circuit breaker in the event of a circuit
breaker supplied by a "downstream" voltage,
■ a momentary contact to indicate tripping
by the "Mitop" release;
■ a green/red mechanical position indicator
(instead of black/white).
Auxiliaries: combination possibilities(4)
RI operating mechanism
and auxiliary contacts
power
supply
voltage
current
consumption
AC (V)
50 Hz
60 Hz
DC (V)
AC (A)
AC (VA)
DC (W)
combinable auxiliary
types and quantities (4)
for SF1 and SFset
additional combination
possibilities
for SF1
or
or
or
or
or
or
or
or
or
or
or
rated current (A)
breaking
AC 220V (cos ø ≥ 0,3)
capacity (A) DC 110/220V (L/R ≤ 0,02 s)
electrical
closing
spring
release
charging
48 - 110 - 220 - 230
120 - 240
24 - 48 - 110 - 125 - 220
opening releases
shunt
undersingle double voltage
390
390
■1
■1
■1
■1
■1
■1
■1
■1
■1
■1
■1
■1
■1
180
65
■1
180
65
■1
■1
■1
■1
■1
■1
■1
■1
■1
■1
■1
■1
■1
2 x 180
2 x 65 160
overcurrent
single
double
2à5
120
15
available
Mitop contacts (3)
NC NO CHG
2à5
120
15
1
1
■1
■1
■1
■
■
1
■
■
1
■
1
■1
■1
■
■
1
■1
■
1
■
1
■
1
1
1
1
■
1
■1
■
■
1
■
■
1
■
1
1
■
5
5
5
5
5
5
5
5
5
5
5
5
5
4
3
5
5
4
4
4
4
3
4
5
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
10
1
0.3
(1) The "description" section provides further information.
(2) Single or double shunt release, undervoltage release, or Mitop release (requiring no auxiliary source, necessary for SFset).
(3) The number of available contacts depends on the options selected.
(4) Maximum quantities with the electrical RI operating mechanism.
14
MV distribution
Merlin Gerin
auxiliary wiring diagram
RI operating mechanism for SF1(1)
J
KN
M
M1-M2
M3
Circuit breaker.
Anti-pumping relay.
Spring charging motor.
End-of-charging contacts.
"Operating mechanism charged" indication
contact.
QF
Circuit breaker auxiliary contacts.
SD
Fault (Mitop) trip indication momentary contact.
SE
Trip indication maintained contact.
Sm1
Closing pushbutton (outside).
Sm2
Opening pushbutton for shunt release (outside).
Sm3
Opening pushbutton for undervoltage release
(outside).
Sn
Closing disable contact (outside).
SP
Pressure-switch contact (please consult us).
YF
Closing release.
Y01-Y02 Shunt opening releases.
YM
Undervoltage opening release.
Mitop
Mitop opening release (autonomous).
YX1-YX2 Overcurrent opening releases.
Sm1
Sm2
Sm3
Sn
M
QF
J
M2
M1
KN
SE
Y02
Y01
M3
SP
SD
Mitop
YM
YX1
YF
YX2
RI operating mechanism for SFset(1)
J
KN
M
M1-M2
M3
QF
SD
SE
Sm1
Sm2
Sm3
Circuit breaker.
Anti-pumping relay.
Spring charging motor.
End-of-charging contacts.
"Operating mechanism charged" contact.
Circuit breaker auxiliary contacts.
Fault (Mitop) trip indication momentary contact.
Trip indication maintained contact.
Closing pushbutton (outside).
Opening pushbutton for shunt release (outside).
Opening pushbutton for undervoltage release
(outside).
Sn
Closing disable contact (outside).
SP
Pressure-switch contact (please consult us).
YF
Closing release.
Y01
Shunt opening releases.
YM
Undervoltage opening release.
Mitop
Mitop opening release.
YX1-YX2 Overcurrent opening releases.
Sm1
Sm2
Sm3
Sn
VIP
M
QF
J
M1
M2
KN
SE
M3
YF
SP
Y01
YM
Mitop
SD
YX1
YX2
(1) Dotted lines represent optional equipment.
Merlin Gerin
MV distribution
15
SF circuit breakers, 1 to 40.5 kV
operating mechanisms and diagrams (cont.)
SF2 circuit breakers
SF2 circuit breakers are actuated by a
GMh operating mechanism that ensures
operating speeds (opening and closing)
independent of operator action.
It can take on remote control functions and
implement reclosing cycles.
GMh operating mechanism
Electrical GMh operating mechanism (cover removed).
Every SF2 circuit breaker comes with a
manual and electrical GMh operating
mechanism.
The manual operating mechanism
comprises:
■ a stored-energy mechanism (spring
type) that stores the energy required to close
and open the contacts;
■ a spring charging system using a
removable lever;
■ a mechanical "opening/closing" system
actuated by two pushbuttons on the front
panel;
■ an electrical "opening" system including
an opening release(2);
■ an "operating mechanism charged"
indication contact;
■ an "end of charging" contact;
■ a block with auxiliary contacts (3);
■ a black/white mechanical "open/closed"
position indicator;
■ a terminal block for connection of
external auxiliary circuits;
■ a cover to protect the operating
mechanism.
The electrical GMh operating mechanism is
made up of the manual GMh operating
mechanism plus:
■ an electrical spring charging device
(motor-driven) that automatically recharges
the mechanism as soon as the contacts are
closed;
■ an electrical "closing" system with a
closing release and an anti-pumping relay;
■ an operations counter.
options(1)
The following options are available for the
GMh operating mechanism:
■ an additional opening release(2) (see
combination possibilities below);
■ for the undervoltage release:
■ a mechanical opening time delay,
adjustable from 0 to 3 seconds,
■ a mechanism enabling the closing of the
circuit breaker in the event of a circuit
breaker supplied by a "downstream" voltage,
■ a green/red mechanical position indicator
(instead of black/white).
Auxiliaries: combination possibilities(4)
GMh operating mechanism
and auxiliary contacts
power
voltage
supply
consumption
combinable auxiliary
types and quantities(4)
electrical
closing
spring
release
charging
AC (V) 110 - 127 - 220 - 230
DC (V) 24 - 48 - 110 - 125 - 220
AC (VA) 700
120
DC (W) 570
70
■1
■1
or
■1
■1
or
■1
■1
or
■1
■1
or
■1
■1
or
■1
■1
or
■1
■1
or
■1
■1
or
■1
■1
rated current (A)
breaking
AC 220V (pf u 0.3)
capacity (A) DC 110/220V (L/R i 0.01 s)
opening release
shunt
single
double
120
70
■1
■1
■1
■2
2 x 120
2 x 70
■
1
1
■
1
■
undervoltage
Mitop
75
15
■1
■
1
■
1
■
1
■
1
1
■
available
contacts (3)
NC NO CHG
5
5
5
5
5
5
5
5
5
10
4
4
4
3
3
3
5
3
5
1
1
1
1
1
1
1
1
1
10
3
(1) The "description" section provides further information.
(2) Single or double shunt release, undervoltage release,
or Mitop release (requiring no auxiliary source, for Statimax
system).
(3) The number of available contacts depends on the
options selected.
(4) Maximum quantities with the electrical GMh operating
mechanism.
16
MV distribution
Merlin Gerin
auxiliary wiring diagram
GMh operating mechanism for SF2(1)
J
KN
M
M1-M2
M3
Circuit breaker
Anti-pumping relay
Spring charging motor
End-of-charging contacts
"Operating mechanism charged" indication
contact
QF
Circuit breaker auxiliary contacts
SE
Maintained trip indication contact
Sm1
Closing pushbutton (outside)
Sm2
Opening pushbutton for shunt release (outside)
Sm3
Opening pushbutton for undervoltage release
(outside)
Sn
Closing disable contact (outside)
SP
Pressure-switch contact
YF
Closing release
Y01-Y02 Shunt opening releases
YM
Undervoltage opening release
Mitop
Mitop opening release (autonomous)
Sm1
Sm2
Sm3
Sn
M1
M
QF
J
M1
M2
SE
KN
Y02
Y01
M3
Mitop
SP
YM
YF
(1) Dotted lines represent optional equipment.
Merlin Gerin
MV distribution
17
SF circuit breakers, 1 to 40.5 kV
protection and control/monotoring
Protection units
for SF1 and SF2
All standard protection units (Sepam,
Statimax) may be used with the SF1 and
SF2.
For further information, please consult us.
The various units ofer wide trip-current
setting ranges and are very stable over
time.
Operation
Sensors supply the protection system with:
■ “␣ current␣ ” information, used by the
protection system␣ ;
■ the electrical power required for the
operation of the protection system (VIP unit
and “␣ Mitop␣ ”release).
All settings are visible and accessible from
the front of the circuit breaker.
Possible combinations
The VIP unit mulst be selected taking into
account the network characteristics
indicated in the table below.
for SFset
VIP protection unit installed on the front panel.
The SFset is made up of a SF1 circuit
breaker with an added integrated protection
system that comprises:
■ a VIP protection unit mounted on the
operating mechanism enclosure ;
■ a set of current sensors installed on the
lower current terminals of the pole units ;
■ a low-consumption Mitop release,
installed on the operating mechanism.
The protection system is fully autonomous
and operates without an auxiliary source.
VIP protection units are available in three
models␣ :
■ VIP13, with an adjustable threshold␣ ;
■ VIP17, with an adjustable threshold,
■ VIP200 and VIP201, offering
microprocessor-based universal protection.
Depending on the model, overcurrent and
zera-sequence protection functions are
provided.
kA
25
VIP200 - VIP201
20
16
12,5
VIP13 - VIP17 - VIP200 - VIP201
0
17,5
24
36
kV
Current sensors
The table below indicates the current sensor
to be used, depending on the current setting
Is required on the protection unit.
The VIP protection units are used in
conjunction with functional current sensors.
Two interchangeable sensors, Csa and
CSb, cover all needs ranging from 10 to
1250A.
CS-type current sensors.
Sensor selection
protection sensor
unit
type
VIP13
VIP17
CSa
protection unit current setting Is:
sensor applicability(1) (for each protection unit rating INC)
(A)
10
100
INC = 20
62
CSb
630
INC = 125
VIP200,
VIP201
CSa
20
100
INC = 20
40
100
200
INC = 40
CSb
125
200
630
INC = 125
VAP5 test unit.
250
630
1250
INC = 250
test units
All VIP protection units are equipped with a
test socket for connection of the VAP5VAP6 test unit (optional).
The portables and autonomous VAP5-VAP6
units check operation of the protection
system.
18
MV distribution
(1) The coloured bars represent the rcommended values,
while the shaded bars represent the absolute limits of the
values thaat may be used.
(2) Please consult us.
Merlin Gerin
VIP 13 protection unit
The VIP13 offers the following protection
functions:
■ overload protection, with a fixed
threshold and an adjustable time delay;
■ short-circuit protection, with an
adjustable threshold and instantaneous
tripping;
■ inverse-time tripping.
VIP17 protection unit
The VIP17 offers the following protection
functions:
■ overload protection, with an adjustable
threshold and an adjustable time delay;
■ short-circuit protection, with an
adjustable threshold and instantaneous
tripping;
VIP200 protection unit
The VIP200 offers the following protection
functions;
■ overload protection, with an adjustable
(definite time) or fixed (inverse time)
threshold and delayable tripping;
■ short-circuit protection, with an
adjustable threshold and instantaneous
tripping;
■ zero-sequence protection, with two
adjustable thresholds and delayable tripping;
■ inverse-time curves (4 curves) or
definite-time curves that may be selected on
the front apnel.
The VIP 200 can also be used for local
control/monitoring functions:
■ tripping indication via a mechanical
indicator (magnetic latching);
■ reset of the mechanical indicator;
■ self-monitoring with LED indications.
VIP201 protection unit
The VIP201 offers the following protection
functions:
■ overload protection, with and adjustable
(definite time) or fixed (inverse-time)
threshods and delayable tripping;
■ short-circuit protection, with an
adjustable thresholds and delayable tripping;
■ zero-sequence protection, with two
adjustable threshods and delayable tripping;
■ inverse-time curves (4 curves) or
definite-time curves that may be selected on
the front panel.
The VIP201 can also be used for local
control/monitoring functions:
■ tripping indication via three mechanical
indicators (magnetic latching);
■ reset of the mechanical indicator;
■ ammeter with digital display.
Merlin Gerin
MV distribution
19
SF circuit breakers, 1 to 40.5 kV
protection and control/monotoring (cont.)
VIP13 Protection unit
1
2
3
78
77
Mitop
YD
vers disjoncteur
Front-plate
5
3
+
A8
.15
0
0
0
3
0
A1
A2
.3
.3
.6
1.2
5
5
.5
0
0
0
0
20A
t(s)
I
IS
.6 IS
.3
.6 INC
1.2
2.3
125A
INC
1
1
test
2
A3
Inc (a)
A4
ls(A)
Csa
Csb
20
10 - - -100
125
62 - - - 630
A5
4
t
A6
A7
–
VIP13 time/current curve
6
1 Test socket (for VAP5-VAP6 tst unit)
2 Indication of Inc.
3 Is/Inc setting (32 possibilities from 0.5 to 5).
4 High threshold setting (4 possibilities for
I>>/Is from 3 to 10).
5 Time delay at 10 Is on the inverse time curve
(16 possibilities form 0.15 to 2.4 s).
6 Table indicating the correspondence
between the characteristic values related to the
sensor.
characteristics
IS setting range
low
setting (± 10 %)
threshold time delay at 10 Is
setting
high
threshold tripping time
td (s)
1 000
500
200
continuous
thermal
withstand 1 s
peak withstand capacity
100
50
20
Definitions
10
I
Inc
Is
I>>
Td
current in the phase.
protection unit current setting.
protectioon unit current setting.
hign threshold current setting.
tripping time (value read on the
curve for a given setting).
total circuit breaker opening time:
td + 32 ms.
5
2
1
5
0,5
10 to 630 A
fixed: 1,2 x IS
0,15 to 2,4
3 à 10 IS
fixed: 30 ms
for I > 20 IS
6 x INC
20 kA rms
50 kA peak
0,2
0,1
0,05
0,02
4
0,01
I/Is
0,005
0,5
1 1,2
2
3
4
5
VIP13 setting example
Consider an installation with a phase current
I of 18 A, requiring:
■ for the fixed low trip threshold: a time
delay of 1.25s at 1.2 Is;
■ for the high trip threshold setting: 180 A
7
10
20
30
step
parameters
sensor selection
for I = 18 A, choose sensor
CSa, with INC = 20
to set IS = 18 A, calculate
IS/INC = 18/20 = 0,9
"phase" protection
low setting
thershold
curve
time
delay
high setting
thershold
20
MV distribution
50 60
fixed at 1,2 IS, i.e.
1,2 x 18 = 21,6 A
always inverse time
on the curve to a "1,25 s
delay at 1,2 IS", read td value
= to 10 IS, i.e. 0,15 s
calculate I>>/IS = 180/18 = 10
valeurs
resulting curve
à afficher
INC = 20 for
setting (2)
IS/INC = 0,9
for setting (3)
n.a.
n.a.
0,15 s
for setting (5)
I>>/IS = 10
for setting (4)
Merlin Gerin
VIP17 Protection unit
78
77
Mitop
vers disjoncteur
Front-plate
3
I>>/Inc
4
5
I>/Inc
t(s)
+
VIP17
A8
A1
+ -
A2
1
A3
A4
t
A5
1
A6
2
1Test socket (for VAP5-VAP6 test unit).
2 Indication of Inc.
3 High setting I>>/Inc (10 to 50 by steps of 2).
4 Low setting I>/Inc (0.5 to 6.25 by steps
of 0.25).
5 Time delay setting t (0.15 to 2.1 sec by
steps of 0.05).
A7
–
VIP17time/current curve
characteristics
Is setting range
low
setting ± 5 %
thershold time delay
t (s)
0,5 to 6,25 Inc
constant time
0,15
± 5 % or ± 20 ms to 2,1 sec
high
setting ± 5 %
10 to 50 Inc
thershold tripping
fixed 40 ms
time
thermal
continuous
6 Inc
withstand 1s
20 KA
peak withstand
capacity
50 KA peak
10
5
2,1
2,05
2
1,95
5
1
0,5
définitions
0,25
0,2
I
current in the phase
Inc protection unit current rating
I> low threshold current setting
I>> high threshold current setting
td tripping time
total circuit breaker opening time :
td + 32 ms.
0,15
0,05
0,02
0,01
4
0,005
3
0,002
0,001
I/Is
0,0005
0,5
1 1,2
2
3
4
5
7
10
20
30
50 60
VIP17 setting example
step
parameters
Consider an installation:
■ low threshold: I>=15A.
■ time delay: td = 350 ms.
■ high threshold: I>> = 240A.
sensor selection
for I> = 15 A, choose a sensor INC = 20 A
for setting 2
CSa (Inc = 20 A)
settings
resulting curve
t
350ms
15A
240A
A
"phase" protection
low thershold setting > = 15 A
time delay
td = 350 ms
high thershold setting I>> = 240 A
Merlin Gerin
I > /Inc = 15/20 = 0,75 write 0,75 in zone 4
t (s) = 0,35 write 0,35 s in zone 5
I>>/Inc = 240/20 = 12 write 12 in zone 3
MV distribution
21
SF circuit breakers, 1 to 40.5 kV
protection and control/monotoring (cont.)
VIP200 and VIP 201 control units
1
2
3
vers disjoncteur
Mitop
YD
78
définitions
77
I
Io
Inc
Is
I>
I>>
Ios
+
C2
alimentation
sortie
–
C1
B1
autosurveillance
B2
B3
LED
B4
I
B5
B6
CAD
P
A8
A7
B8
IO
B7
réglages
signalisation
voyants mécaniques
de déclenchement
current flowing in the phases.
zero-sequence fault current.
protection unit current rating.
protection unit current setting
low threshold current setting
high threshold current setting
zero-sequence protection current
setting.
td tripping time (value read on the curve
for given settings).
T
base time corresponding to a phase
current of 10 Is.
Time/current curves
DT Definite Time curve
SI Standard Inverse time curve
VI Very Inverse time curve
EI Extremely Inverse time curve
LTI not used
RI Dependent time curve
S2 not used
∞ low threshold disable (for “ phase ” or
“ zero-sequence ” protection).
ampèremètre
test
characteristics (as per standards IEC 255 and IEC 68)
thresholds
accuracy of:
IS setting
low threshold setting (DT curve)
low threshold time delay
high threshold setting
high threshold delay
VIP200
VIP201
temperature from 0 to 50 °C
temperature from -25 to 70 °C
frequency from 45 to 65 Hz
dropout percentage
times:
memory
fault duration without tripping
resetting
minimum zero-sequence
trip threshold(1)
input current
frequency
short time withstand capacity
continuous
1s
peak withstand capacity
environment
50 Hz-1min
insulation
impulse wave 1,2/50 µs
level
1MHz damped oscillating wave
high frequency
electrical fast transicients (5 ns)
disturbances
electrostatic discharge
radiation
mechanical endurance of circuit-breaker
mechanical vibrations
shock and
in service
out of service
bumps
degree of protection (relay front plate)
temperature range: operation
storage
maximum drift
for:
±5 %
±5 %
±5 % (or ±30 ms)
±5 %
25 ms, -0 +15 ms
25 ms to 1.575 s,
±5 % (or -0 +15 ms)
no significiant drift
±3 %
no significiant drift
95 % ±3 %
10 ms
10 ms
50 ms
10 % of INC
50 - 60 Hz
6 INC
25 kA rms
50 kA peak
2 kV rms (IEC 255-4)
5 kV choc (IEC 255-4)
2,5 kV (IEC 255-4 classe III)
4 kV (IEC 801-4 classe III)
15 kV (IEC 801)
10 V/m (IEC 801-3 classe III)
10 000 operations (CO)
IEC 255-21-1 classe I
5g
15 g (IEC 255-21-2 classe I)
IP 51
-25 to +70 °C (IEC 68-2-1 et 68-2-2)
-40 to +85 °C (IEC 68-2-1 et 68-2-2)
(1) This protection is operational only if the zero-sequence
current is greater than INC when the fault occurs.
22
MV distribution
Merlin Gerin
VIP200 front-plate
7
8
9
VIP200
I
+ –
DT
SI
VI
EI
LTI
RI
S2
2
3
1.5
.8
T(s)
3.17
8
0
1
2
3
4
5
6
7
test
IO
1
0
0
0
0
0
1.5
1
2
4
1
2
0
.05
0
0
0
0
4
.1
.1
.2
.4
.8
3
0
0
0
0
20A
5
5
10
IS
INC
20Is
125A
.10
0
0
0
0
.2
.2
.4
.8
1.6
1
0
0
0
0
0
1.5
1
2
4
1
2
0
.05
0
0
0
0
4
.1
.1
.2
.4
.8
3
0
0
0
0
x1
5
5
10
I
IS
t
T
I
IS
test
INC
11
12
10
13
14
8
1.1
.2
.2
.5
1
2
8
1
0
0
0
0
0
20 Is
x2
reset
6
5
3
4
1
The front-plate of the VIP200 includes the
following elements:
1 indicator “ reset ” button
3 Self-monitoring LED:
■ LED off ; normal VIP operation (hot
standby);
■ LED on (not flashing): internal fault;
■ LED flashing : time delay operating or
test initiated via the “ Reset ” button.
4 Test socket (for VAP5-VAP6 unit)
5 Inc indication:
■ Inc = 20 A set 20A x 1;
■ Inc = 40 A set 20 A x 2 ;
■ Inc = 125 A set 125 A x 1;
■ Inc = 250 A set 125 A x 2;
6 Used when testing with VAP5-VAP6 test
unit.
7 Time/current curves (available curves
with indication of time base to be used for
time delay settings).
8 “ Phase ” protection (I).
9 “ Zero-sequence ” protection (Io):
10 Choice of type of curve;
11 Choice of Is and Ios;
12 Low threshold current setting I/Is and Io/
Is, for definite time DT curve only;
13 Low threshold time delay setting;
14 High threshold current settings.
2
VIP201 front-plate
15
7
8
9
VIP201
I
x IS
+ –
SI
VI
EI
LTI
RI
S2
2
3
1.5
.8
3.17
1
0
0
0
0
0
1.5
1
2
4
1
2
0
.05
0
0
0
0
4
.1
.1
.2
.4
.8
3
0
0
0
0
20A
5
5
10
IS
INC
I
IS
t
T
I
IS
20Is
125A
test
INC
.10
0
0
0
0
.2
.2
.4
.8
1.6
1
0
0
0
0
0
1.5
1
2
4
1
2
0
.05
0
0
0
0
4
.1
.1
.2
.4
.8
3
0
0
0
0
x1
5
5
10
11
12
10
13
14
8
.075
.1
.2
.4
.8
T(s)
1.1
.2
.2
.5
1
2
8
.025
0
0
0
0
test
DT
8
0
1
2
3
4
5
6
7
IO
1
0
0
0
0
0
20 Is
x2
reset
The front-plate of the VIP201 includes the
same elements as the VIP200 front-plate,
with in addition:
15 Digital ammeter (displays the value of
the current flowing in the phase with the
highest load as a percentage of Is).
16 High threshold time delay
For all current values, the high accuracy of
these time delay settings makes it possible
to obtain discrimination in stages of 0.2 s
(settings from 0.025 s to 1.575 s in steps of
0.05s).
Indications
18 “ phase fault ” trip ;
19 “ zero-sequence fault ” trip ;
These indicators, with magnetic latching,
maintain fault trip indications even after the
circuit breaker has opened. The power
required for resetting the indicators is
supplied either by an internal capacitor (12
hours autonomy) or by connecting the
VAP5-VAP6 test unit.
6
5
3
Merlin Gerin
4
1
16
18
19
MV distribution
23
SF circuit breakers, 1 to 40.5 kV
dimensions
SF1, SFset
Basic fixed unit
operating mechanism on the right SF1 and SFset
E
SF1
D
P
D
P
E
Upper connection (all versions, all types of
operating mechanisms)
SF1 and SFset
SFset
20
Ø24
M8
56
17
8
H
20
13
M8
Ø40
350
350
56
20
L
W
270
E
13
+0.2
0
E
SF1 et SFset
DP
D
P
17
8
operating mechanism on the left
SF1
SFset
+0.2
0
Lower connection
SF1, insulation i 125 kV impulse
2 Ø M8
20
H
18
350
350
SF1, insulation i 170 kV impulse
270
L
W
25±0,5
52
2 Ø10,5
operating mechanism in front
SF1 and SFset
E
Ø 40
SFset
E
10
SF1
270
D
P
PD
270
60
75
SFset
H
2 Ø M8
345
345
20
20
Ø 40
WL
Dimensions and weights
rated
dimensions (mm)
current (A)
H
W
D
SF1
operating mechanism on the right or on the left
630,
750
993
290
1250(2)
750
1143
290
750
1560
365
operating mechanism in the front
630,
745
766
490
1250(2)
745
886
490
745
927
559
745
1260
565
SFset
operating mechanism on the right or on the left
630,
750
993
420
1250(2)
750
1143
420
operating mechanism in the front
630,
745
766
620
1250(2)
745
886
620
28
MV distribution
E
weight
(Kg)
rated
voltage kV
220
280
380
78
80
88
17,5
24
36
220
280
350
380
78
80
85
88
17,5
24
36
36
220
280
88
90
17,5
24
220
280
88
90
17,5
24
(2) When there are several lines of values for a given rated
current, each line corresponds to a different insulation level.
Merlin Gerin
Fixed unit with support frame
operating mechanism on the right
SF1 and SFset
SF1
E
D
E
operating mechanism on the left
SF1
SFset
SFset
D
D
SF1 and SFset
D
E
E
H(1)
(1)
(1)
H
(1)
775
775
775(1)
775(1)
W
W
operating mechanism in front
SF1 and SFset
SF1
E
SFset
D
E
H
D
(1)
775(1)
775(1)
W
Dimensions and weights
rated
dimensions (mm)
current (A)
H
W
D
SF1
operating mechanism on the right or on the left
630,
1175
1065
600
1250(1)(2)
1175
1215
600
1175
632
600
operating mechanism in the front
630,
1175
853
600
1250(1)(2)
1175
973
600
1175
1347
600
SFset
operating mechanism on the right or on the left
630,
1175
1065
600
1250(1)(2)
1175
1215
600
operating mechanism in the front
630,
1175
853
649
1250(1)(2)
1175
973
649
E
weights
(Kg)
rated
voltage kV
220
280
380
103
105
113
17,5
24
36
220
280
380
103
105
113
17,5
24
36
220
280
103
105
17,5
24
220
280
103
105
17,5
24
(1) Additional holes are provided on the frame for positioning the unit 215 mm lower.
(2) When there are several lines of values for a given rated current, each line corresponds to a different insulation level.
Merlin Gerin
MV distribution
29
SF circuit breakers, 1 to 40.5 kV
dimensions (cont.)
SF2 - ISF2
Basic fixed unit SF2
E
D
P
E
Connection SF2
630, 1250 A
300
2500, 3150 A
190
32.5
10
35
70
100
90
35
H
49.5
8 Ø13
90
18.5
372
70
63
26 26
47
10
L
W
117
Fixed unit with support frame SF2 - ISF2
E
P
190
E
2000 A(1)
300
78
2 Ø M12
30
30
20
Ø 60
H
630
L
Connection ISF2
2500 A
78
644
3150 A
32.5
2 Ø M12
35
30
SF2 dimensions and weights
rated
dimensions (mm)
current (A)
H
W
basic fixed unit
630, 1250
825
910
825
1110
825
1224
2500, 3150
942
910
942
1110
942
1224
fixed unit with support frame
630, 1250
1030
910
1030
1110
1030
1224
2500, 3150
1147
910
1147
1110
1147
1224
30
D
E
weight
(kg)
rated
voltage (kV)
750
750
750
777
777
777
300
400
457
300
400
457
159
212
242
174
227
242
24
36
40,5
24
36
40,5
750
750
750
777
777
777
300
400
457
300
400
457
179
239
272
194
254
272
24
36
40,5
24
36
40,5
20
Ø 60
100
35
49.5
8 Ø13
70
10
117
(1) This connection terminal is specific to the ANSI standard 2000 A current rating.
ISF2 dimensions and weights
rated
dimensions (mm)
current (A)
H
W
fixed unit with frame
3150 A
1147
910
2500 A
1147
910
D
E
weight
(kg)
rated voltage
(Kv)
777
777
300
300
194
194
24
40,5 (2)
(2) With interphases barriers.
30
MV distribution
Merlin Gerin
D
identification of units
examples of rating plates
units complying with IEC
standards
Circuit breaker, electrical operating mechanism and auxiliaries
IEC 56
n°
U ------------kV
Uw ----------- kV
Isc ----------kA---------sec In -------------- A
Seq --------------------------f -------------- Hz
tension de fermeture - closing voltage
Einschaltspannung - tension de cierre
tensione di chiusura ---------------------------------------------------------------------------------tension d'ouverture - opening voltage
Ausschaltspannung - tension de apertura
tensione di apertura --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------tension du moteur - motor voltage
Motorenspannung - tension del motor
tensione del motore ---------------------------------------------------------------------------------schema - diagram
Schaltbild - esquema
schema --------------------------------------------------------------------------------------------------
!
units complying with ANSI
standards
SF6 : P = -------- bars
Circuit breaker
Electrical operating mechanism
and auxiliaries
n°
Rated frequency
Rated cont.current
Rated max.voltage
Range factor k
BIL
Rated SC current
Rated interr.time
Operating pressure
Weight
Instruction book
Std. duty cycle
Hz
A
kV
kV
kA
Cycles
b
n°
Closing control voltage ----------V
Tripping control voltage----------V
Closing current --------------------A
Tripping current--------------------A
Wiring diagram ---------------------------
inspection sheet
units complying with IEC
and ANSI standards
All devices
département DOMT.F
garantie qualité
le
par
Merlin Gerin
MV distribution
31
order information
General information
Person ordering
Order number
User
Name of project
Operating manuals
quantity
...........................................................................................
...........................................................................................
...........................................................................................
...........................................................................................
french
english
...............................................
Network characteristics
Service voltage
Frequency
Insulation level
...........................................................
...........................................................
...........................................................
...........................................................
V
Hz
kV rms 1 min
kV impulse 1.2/50 µs
Unit characteristics
Rated current
Breaking capacity
Short-time withstand current
Standards
Circuit-breaker model
........................................................... A
........................................................... kA rms
........................................................... kA rms .................. s
IEC
ANSI
SF
.................................................. quantity
Version
basic fixed unit
fixed unit with support frame
Installation
indoor
special panel
outdoor
Operating sequence
standard (O - 3 min - CO - 3 min - CO)
rapid 1 (O - 0,3s - CO - 3 min - CO)
rapid 2 (O - 0,3s - CO - 15 s - CO)
Protection unit
For SFset
For SF1 et SF2
Selection of additional auxiliaries
and accessories depends on the type
of switchgear.
Consult the options proposed in the
"description" and "operating mechanism
and diagrams" sections.
quantity(1)
Auxiliaries and accessories
Operating mechanism
Opening release
Additional auxiliaries
Accessories
(1) If the selected protection unit includes zero-sequence
protection (VIP200 and VIP201), 3 sensors are required.
(2) Momentary contact to indicate tripping by the "Mitop
release.
unit type
VIP
sensor type
please consult us
manual
manual and electric
spring charging motor ...................... V, ...........................
closing release ................................. V, ...........................
shunt
single .......... V, ...........................
quantity
double ......... V, ...........................
undervoltage
.................... V, ...........................
mechanical time delay .................... yes
.................... no
close enabling
.................... yes
mechanism
.................... no
overcurrent
single .......... A
quantity
double ......... A
Mitop (necessary for Fluarc SFset) :
without momentary contact (2)
with momentary contact (2)
pressure switch
...........................................................................................
...........................................................................................
"green-red" mechanical indicators
operation counter (for manual RI operating mechanism)
locking device: without locks
with locks
VAP5 test unit
quantity
...........................................................................................
...........................................................................................
32
MV distribution
Merlin Gerin
MV Distribution
Circuit-breakers
LF1 - LF2 - LF3
1 to 17.5 kV
Contents
Presentation
Page
2
RI stored energy operating mechanism
4
Technical features
6
Dimensions and weights
7
1
Presentation
Application
The Merlin Gerin LF circuit-breakers are three-pole
indoor circuit-breakers using SF6 technology.
Designed to operate and protect public and industrial
distribution networks from 1 to 17.5 kV, they comply
with the IEC 56 standard.
The advantages of tried and tested technology
Safety
The breaking medium is sulphur hexafluoride (SF6) used at low pressure
(0.15 MPa, i.e. 1.5 relative bar).
The insulating enclosure containing the 3 poles is equipped with safety membranes.
With self-expansion, the breaking technique used in LF circuit-breakers, all current
types, capacitive and inductive, can be made or broken without generating
overvoltage which could damage your installation.
Moreover, the nominal features, nominal current breaking under nominal voltage,
are maintained at 0 relative bar of SF6.
Reliability
The motor charged spring stored energy operating mechanism is a key factor
of device reliability: Schneider draws on 25 years of experience on this type
of mechanism, 150,000 of which are already in operation.
Schneider’s mastery of design and checking of sealed systems guarantees
sustained device performance well at least 30 years.
Increased endurance
The mechanical and electrical endurance of LF circuit-breakers are superior
to those recommended by the IEC.
Bare fixed LF1.
The LF circuit-breakers have successfully passed mechanical endurance tests for
well over 10,000 switching operations, as well as electrical endurance tests several
dozen times short-circuit current: these circuit breakers are able to break their
nominal current 10,000 times.
Less maintenance
Throughout device service life, which in normal operating conditions may be at least
30 years, the only maintenance required is on the mechanical operating mechanism
once every 10 years or every 10,000 operations.
Although no maintenance is performed on poles, a diagnosis is possible:
c contact wear can be checked by external pole measurement,
c SF6 pressure can be continually monitored by a pressure switch.
Environmentally-friendly
The LF circuit-breakers are designed to ensure protection of the environment:
c the materials used, both insulating and conductive, are identified, and easy
to separate and recycle,
c the SF6 can be recovered at end of service life and re-used after treatment.
Quality
Each circuit-breaker undergoes systematic routine tests in order to check quality
and conformity:
c pole sealing check,
c checking proper mechanical operation of the device, plus its associated
locking mechanisms,
c checking simultaneous closing of contacts,
c checking power frequency insulation level,
c checking main circuit resistance,
c checking auxiliary circuit insulation,
c checking switching speeds,
c checking switching cycle,
c measuring switching times.
The results are recorded on the test certificate for each
device.
The withdrawable version of the LF circuit-breakers
is designed to equip the MV functional units
of the MCset range.
The entire circuit-breaker creation and manufacturing
process undergoes quality control in accordance
with the requirements of the French Quality Assurance
Association (AFAQ): ISO 9001 and ISO 9002 certification.
1
ISO 900
The LF circuit-breakers have successfully passed
the type tests required by the IEC 56.
ISO
2
9002
Description of the device
The basic fixed version consists of:
c 3 poles incorporated in an insulating enclosure of the “sealed pressure system”
type. The sealed assembly is filled with SF6 at low pressure (0.15 MPa, i.e. 1.5 bar).
c a RI type operating mechanism,
c a front panel housing the manual operating mechanism and the status indicators,
c upstream and downstream terminals for power circuit connection,
c a terminal block for connection of the external auxiliary circuits.
Optional:
c a supporting frame equipped with rollers and ground fixing brackets for simplified
handling and installation,
c circuit-breaker locking in open position by keylock installed on the front plate
of the operating mechanism,
c wiring of the pressure switch mounted on the cover of the insulating enclosure.
LF3 on supporting frame.
a
b
Principle of the self-expansion
breaking technique
This technique is the result of many years’ experience in SF6 technology
and of major research work.
It combines the effect of thermal expansion to the rotating arc technique in order
to create arc blowing and quenching conditions.
The result is reduced stored energy and arcing contact erosion, i.e. increased
mechanical and electrical endurance.
Fig.2
Fig.1
The operating sequence of a self-expansion breaking chamber whose moving part
is driven by the mechanical operating mechanism is as follows:
Fig.1: the circuit-breaker is closed.
Fig.2: on opening of the main contacts (a), the current is shunted
into the breaking circuit (b) ;
Fig.3: on separation of the arcing contacts, an electric arc appears in the expansion
volume (c). This arc rotates under the effect of the magnetic field created by the coil
(d) through which flows the current to be broken. The overpressure created by the
temperature build-up of the gas in the expansion volume (c) causes a gaseous flow
blowing the arc inside the tubular arcing contact (e) and resulting in arc quenching
when the current passes through the zero point.
d
c
e
Fig.4: the circuit-breaker is open.
Fig.3
Fig.4
Electric arc in a self-expansion breaking chamber.
3
RI stored energy
operating mechanism
Operation of the mechanical
operating mechanism
This mechanism guarantees the device an opening and closing speed unaffected
by the operator, for both electric and manual orders.
It carries out the O and CO cycles and is automatically recharged by a gear motor
within less than 15 s after closing.
It consists of:
c the stored energy operating mechanism which stores in springs the energy
required to open and close the device.
c a gear motor electrical charging device with optional manual charging by lever
(useful on loss of auxiliary supply).
c manual order devices by push buttons on the front panel of the device.
c an electrical remote closing device containing a release with an antipumping relay.
c an electrical opening device containing one or more releases, for example:
v shunt trip devices,
v undervoltage releases with time delay adjustable from 1 to 3 sec,
v mitop, a low consumption release, used only with the Sepam 100 LA
protection relay.
c an operation counter.
c a position indication device by mechanical indicator (black and white)
and a module of 14 auxiliary contacts whose availability varies according
to the diagram used.
c a device for indicating “charged” operating mechanism status by mechanical
indicator and electrical contact.
RI operating mechanism.
Standard diagram
Sm1
Sm2
Sm3
Sn
J
KN
M
M1-M2
M3
QF
SD
SE
Sm1
Sm2
Sm3
Sn
SP
YF
Y01-Y02
YM
Mitop
4
Circuit breaker.
Anti-pumping relay.
Spring charging motor.
End-of-charging contacts.
“Operating mechanism charged” indication contact.
Circuit breaker auxiliary contacts.
Fault (Mitop) trip indication momentary contact.
Trip indication maintained contact.
Closing pushbutton (outside).
Opening pushbutton for shunt release (outside).
Opening pushbutton for undervoltage release (outside).
Closing disable contact (outside).
Pressure-switch contact.
Closing release.
Shunt opening releases.
Undervoltage opening release.
Mitop opening release (autonomous).
M
QF
J
M1
M2
SE
KN
Y02
Y01
M3
YM
YF
SD
Mitop
SP
RI operating mechanism low voltage auxiliaries
Electrical spring charging
closing release
opening releases
M
YF
YO1, YO2
YM
MITOP
supply voltages
AC (V)
50 HZ
48 - 110 - 220
48 - 110 - 220
48 - 110 - 220
Sepam 100 LA supply
AC (V)
60 HZ
120 - 240
120 - 240
120- 240
Sepam 100 LA supply
DC (V)
24-30-48-60-110-125-220
24-30-48-60-110-125-220
24-30-48-60-110-125-220
Sepam 100 LA supply
consumptions
AC
380 VA
160 VA
160 VA
100 VA
DC
380 W
50 W
50 W
10 W
Opening release combination choices
1st release
single shunt
release (Y01)
double shunt
release (Y02)
undervoltage
release (YM)
MITOP
5O - 4C - 1I
5O - 3C - 1I
2nd release
without
5O - 5C - 1I
5O - 5C - 1I
single shunt
release (Y01)
5O - 4C - 1I
5O - 4C - 1I
double shunt
release (Y02)
5O - 3C - 1I
5O - 3C - 1I
undervoltage
release (YM)
5O - 4C - 1I
5O - 3C - 1I
MITOP
5O - 4C - 1I
5O - 3C - 1I
number of contacts
available:
O: open
C: closed
I: changeover
5O - 5C - 1I
5O - 5C - 1I
Specific points
Conditions for use
This circuit-breaker operates in the following
atmospheric and climatic conditions:
c climatic condition(1): - 5 °C to + 40 °C.
Standard packaging
Basic fixed assembly: packaging on untreated
wooden pallet.
Fixed assembly with frame: packaging on 2 untreated
wooden pallets.
(1)
For other values, please consult us.
5
Technical features
LF1, LF2 circuit-breakers
IEC 56
LF1
LF2
rated voltage
kV, 50/60 Hz
7.2
12
7.2
12
17.5
insulation level
kV rms 50 Hz - 1 mn
20
28
20
28
38
kV, impact 1.2/50 µs
60
60
75
95
A
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
c
rated current
630
1250
2000
breaking capacity Isc
kA, rms
making capacity
kA, peak
75
(1)
25
31.5
25
31.5
50
40
31.5
79
63
79
63
79
125
100
permissible short time withstand current kA, rms, 3 s
25
31.5
25
31.5
50
40
31.5
capacitor breaking capacity
A
440
440
440
440
440
rated switching sequence
operating times
O-3 mn - CO-3 mn - CO
c
c
c
c
c
O-0.3 s - CO-15 s - CO
c
c
c
c
c
O-0.3 s - CO-3 mn - CO
c
c
c
c
c
ms
48
opening
48
48
48
48
breaking
70
70
70
70
70
closing
65
65
65
65
65
LF3 circuit-breaker
IEC 56
LF3
rated voltage
kV, 50/60 Hz
7.2
12
17.5
insulation level
kV, rms 50 Hz - 1 mn
20
28
38
kV, impact 1.2/50 µs
60
75
rated current (Ia)
A
breaking capacity Isc
kA, rms
making capacity
kA, peak
95
c
1250
2500
c
c
c
c
c
c
c
c
c
3150
c
c
c
c
c
c
c
c
c
c
c
25
31.5
40
50
25
31.5
40
50
25
31.5
63
79
100
125
63
79
100
125
63
79
permissible short time withstand current kA, rms, 3 s
25
31.5
40
50
25
31.5
40
50
25
31.5
capacitor breaking
capacity
A
440
440
440
rated switching sequence
operating times
O-3 mn - CO-3 mn - CO
c
c
c
O-0.3 s - CO-15 s - CO
c
c
c
O-0.3 s - CO-3 mn - CO
c
c
c
ms
opening
48
48
48
breaking
70
70
70
closing
65
65
65
ANSI C37.04-C37.06-C37.09
LF3
rated maximum voltage
kV, 60 Hz
4.76
8.25
15
rated voltage range
K factor
1.24
1.25
1.3
36
rated insulation level
kV, rms 60 Hz - 1 mn
19
36
kV, impact 1.2/50 µs
60
95
95
A
1200
c
c
c
2000
c
c
c
3000
c
c
c
kA, rms
29
33
28
maximum symmetrical interrupting
kA, rms
capability and rated short-circuit current
36
41
36
closing and latching capability
kA, peak
(2.7 K times rated short-circuit current)
97
111
97
rated interrupting time
5
5
5
rated continuous current
rated short-circuit current
(at rated max kV)
(1)
6
Used only in fixed installations: consult us.
60 Hz cycles
Basic fixed assembly
LF1 - LF2 - LF3
50
connection
50
35
on
off
LF1
LF2
LF3
493
554
728
weight (kg)
106
128
149.5
330
on
off
590
A
270
50
25
536
A
34
Fixed assembly
with supporting frame
LF1 - LF2 - LF3
on
off
330
on
off
995
LF1
LF2
LF3
B
542
602
776
C
160
180
240
D
145
165
225
E
145
165
225
weight (kg)
124
148
168
555
B
539
34
Connections
Direct connection on device:
Connection on pads:
c LF1
c LF2:
c LF2 < 2000 A
2000 A
c LF2 < 95 kV impact
1250 A (at 95 kV impact)
c LF3
52
128
630 A (at 95 kV impact)
8 holes ø12.2
3 x 40
11
20
3 x 30
11
32
15
40
C
E
20
40
E
D
15
66
60
7.5
40
3 x 2M10 x 26 (used)
63
22.5
4 x ø12
7
Power supply to electric furnaces
ISF2 : Switch/circuit-breaker
for the control of
heavy duty furnaces
Description
The ideal technology for electric furnace
control
Safety
The SF6 breaking technique is especially well suited to making and breaking furnace
currents while avoiding any overvoltages likely to damage equipment on the furnace
supply line.
The ratings, rated current breaking under rated voltage, are held at 0 relative bars.
Each pole-unit, filled to a pressure of 0.15 MPa (i.e. 1.5 relative bars), is fitted with a
safety disk and diagnostic system for continuous monitoring of the SF6 pressure.
Durability suitable for heavy duty
The mechanical durability of the ISF2 is 50,000 mechanical switching operations
with maintenance every 10,000 operations.
Reliability
The mechanical operating mechanism, based on energy storing springs, is a key
feature of the device’s reliability: Schneider has 25 years of experience in these
types of mechanism.
Because Schneider fully masters the design and monitoring of sealing systems,
the device will give you lasting performances throughout its service life.
ISF2
Application
The ISF2 is a three-phase switch/circuit-breaker for
indoor use based on SF6 technology.
It carries out control of electric furnaces up to 40.5 kV
and complies with IEC standard publications 56 and
694.
Environmentally friendly
The ISF2 furnace switch has been designed for environmental protection:
c the materials used, insulators and conductors, are identified, easy to separate
and recyclable,
c the SF6 can be recovered at the end of the device service life and reused after
being treated.
Quality
Each switch undergoes systematic routine tests for checking quality and conformity:
c pole-unit sealing tested,
c correct mechanical operation of the device tested together with associated locking
systems,
c simultaneous contact closing tested,
c power frequency insulation level tested,
c main circuit resistance tested,
c auxiliary circuit insulation tested,
c switching operation speed tested,
c switching cycle tested,
c switching operation times tested.
The results obtained are recorded on each device’s test certificate.
The entire switch creation and manufacturing process is quality controlled in
compliance with the French association for quality assurance (AFAQ): ISO 9002
certification. The ISF2 switch has passed type tests in compliance with IEC 56 and
265 standards.
2
ISF2 switch/circuit-breaker
Device description
The ISF2 is a disconnectable fixed device made up of:
c 3 separate pole-units, each being built into a “sealed pressure system” type
insulating enclosure; each pole-unit is filled with SF6 at low pressure (0.15 MPa,
i.e. 1.5 bars),
c a Gmh type spring stored energy operating mechanism,
c a front panel with the manual operating mechanism and position indicators,
c upstream and downstream terminals for power circuit connection,
c a multipin socket for auxiliary circuit connection,
c un dispositif d’auto-diagnostic, pour le contrôle permanent du gaz SF6 sur chacun
des 3 pôles, équipé de :
v 1 “low threshold” contact, for possible pressure drop indication,
v 1 “high threshold” contact, for indication of a rise in pressure due to abnormal
overheating of the pole-unit or the arcing contact wear limit being reached.
a
Principle of the breaking technique
auto-compression
This breaking technique has been widely tried and tested and produces high
performances.
The arc is blown and thus extinguished by forced convection.
b
Fig 1: The circuit-breaker is closed.
Fig 2: When the main contacts open (a), the current is sent into the breaking circuit (b).
Fig 1
Fig 2
Fig 3: When the arcing contacts separate an electric arc appears: this is controlled
by the insulating nozzle; a piston (c) attached to the moving contact moves
downwards and compresses the gas in (d); the gas then escapes via the holes in the
piston into the tubular arcing contact zone, cools down and deionizes the electric arc
zone, thus extinguishing the arc when the current reaches 0 point.
Fig 4: The circuit-breaker is open.
Ratings
c
d
Fig 3
Fig 4
CEI 56
rated voltage
insulation level
rated current
Isc breaking capacity
making capacity
allowable short time
with stand current
rated switching cycle
operating time
electrical durability
kV, 50/60 Hz
r.m.s. kV, 50 Hz - 1 mn
kV, 1.2/50 µs impulse
A
r.m.s. kA
peak kA
r.m.s. kA, 3 s
peak kA
O - 3 mn - CO - 3 mn - CO
ms
opening
breaking
closing
number
time
total
24
50
125
2500
31.5
79
31.5
79
c
45 to 65
60 to 80
70 to 90
10
see curve p.5
40.5(1)
85
185(1)
2500
25
62.5
25
62.5
c
45 to 65
60 to 80
70 to 90
10
see curve p.5
(1) For voltage of 36 to 40.5 kV, suitable inter-phase barriers supplied with the device must be
installed by the contractor.
ISF2 switch/circuit-breaker
3
Application example
Simplified diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
HV circuit-breaker
HV/MV step-down transformer
Power factor correction device
Protective circuit-breaker
Earthing switch
Isolation switch
ISF2 for furnace control
Voltage transformer
Current transformer
Surge arrester
RC circuit
Furnace MV/LV transformer
Furnace electrodes
HV MV
1
2
10 MV LV
6
4
3
5
7
8
9
5
12
11
13
Schneider offers complete solutions for the power supply to your furnaces:
consult us.
ISF2 mounting in a cubicle
8
7
4
9
ISF2 switch/circuit-breaker
Maintenance
Life expectancy of pole-units
cycles
50000
The stress that the device has to withstand is variable depending on the type of
installation and the operating rules. The life expectancy of the poles is essentially
proportional:
c to the number of load current making and breaking cycles,
c to the value of the furnace supply transformer rated current.
40000
30000
Example: for an arc furnace fed by a 100 MVA transformer at 30 kV (or 67 MVA
at 20 kV) with a load cycle of 2000 A, the life expectancy of an ISF2 is 28,000
CO cycles (or 50,000 CO cycles when the set of pole-units is replaced).
20000
Electrical durability
10000
I (A)
0
0
500
1000
1500
2000
2500
Fig 1 - Life expectancy of a set of pole-units (number of
CO cycles) depending on the furnace load current I.
This depends on:
c the furnace load current,
c the circuit configuration when the device switches:
v opening
v closing
c the rating of the furnace transformer and in particular of the inrush current during
no-load energization,
c the elements inserted in the furnace supply line, saturable reactor, non-saturable
reactor, etc.
The electrical durability can be estimated using the graph in figure 1 based on the
following operating hypotheses:
1- Protection of overload currents above 2 In is carried out by the circuit-breaker
located upstream.
2 - Switching operations are carried out with the electrodes out of the bath.
3 - The no-load inrush current of the furnace transformers is below 4 In.
Maintenance
SF6 breaking devices do not generally require special maintenance.
However, since the furnace operating mechanism undergoes heavy stress, it is
advisable to carry out basic maintenace involving the following operations:
c depending on the ambient environment, clean the surface of the insulating
enclosures;
c every 10,000 switching operations:
v measure the wear on the arcing contacts without removing the pole-units during
inspection and maintenance operations (the auto-diagnostic system monitors wear
on the pole-units throughout the device service life);
v clean the operating mechanism, grease it and check the nuts and bolts.
ISF2 switch/circuit-breaker
5
Gmh stored energy operating mechanism
Operating mechanism
The ISF2 is fitted with a Gmh type operating mechanism based on stored energy
which gives the device a closing and opening speed which is not dependent on the
operator.
The GMh operating mechanism is made up of:
c a stored energy mechanism which stores the energy required for device closing
and then opening in springs;
c a manual charging mechanism using a removable lever;
c an electrical charging mechanism with a motor which automatically recharges the
operating mechanism as soon as the device is closed;
c a mechanical “opening-closing” mechanism actuated by 2 pushbuttons located on
the front panel;
c an electrical “closing” mechanism including:
v 1 closing release for remote control,
v 1 anti-pumping relay;
c an electrical “opening”system, including 1 shunt opening release; an optional
undervoltage release can be added to this device;
c a mechanical position indicator with “white-black” or “red-green” mechanical
indicators;
c a switching operations counter.
c A 14 strong auxiliary contact block including:
v 2 contacts for the electrical operating mechanism,
v 1 contact for the shunt release,
v 11 available contacts;
c 1 closing contact for “operating mechanism charged” indication;
c 1 “open” position key-lock support (lock supplied);
c a multipin connector (male and female) with 36 pins and a 2 metre lead.
Gmh operating mechanism
Operating mechanism low voltage auxiliaries
supply voltages
AC (V)
50 HZ
AC (V)
60 HZ
DC (V)(2)
consumption
AC
DC
Auxiliary contacts
rated current
breaking capacity
CA
CC
charging motor
M
closing release(1)
YF
opening release
YO1, YO2
50 - 110 - 127 - 220
50 - 110 - 127 - 220
50 - 110 - 127 - 220
120 - 240
120 - 240
120 - 240
24 - 48 - 60 - 110 - 127 - 230
24 - 48 - 60 - 110 - 127 - 230
24 - 48 - 60 - 110 - 127 - 230
700 VA
570 W
120 VA
70 W
120 VA
70 W
YM
100 VA
10 W
10 A
10 A at 220 V (cos ϕ <i 0.3)
3 A at 110 ou 220 V (L/R <i 0.01 s)
(1) With anti-pumping relay.
(2) For other values, please consult us.
6
ISF2 switch/circuit-breaker
Operating mechanism wiring diagram
J
KN
M
M1-M2
M3
QF
SE
Sm1
Sm2-Sm4
Circuit-breaker.
Anti-pumping relay.
Charging motor.
End-of-charging limit switches.
“Operating mechanism charged” contact.
Circuit-breaker auxiliary contacts.
Trip hold contact.
Closing pushbutton (external).
Opening pushbuton for shunt
release(external).
Opening pushbutton for undervoltage
release (external).
Closing disable contact (external).
Pressure switch contacts.
Closing release.
Shunt opening release.
Undervoltage release.
Sm3
Sn
SP1-SP2
YF
Y01-Y02
YM
Sm2
Sm1
Sn
Sm4
Sm3
M1
M
QF
J
M1
M2 KN
SE
Y01
M3
Y02
SP1
SP2
YM
YF
Dimensions and weights
Connection pad:
690
910
78
300
736
190
300
300
2 Ø 14
d
30
30
20
Ø 60
c
1060
1108
630
e
b
a:
b:
c:
d:
e:
35
1010
a
322
644
fixing lugs supplied on the frame are used to anchor the device to the ground;
the device is fitted with rollers to facilitate handling and installation;
multipin connector;
inter-phase barriers delivered with the 40.5 kV version;
removable charging lever.
Approximate weight: 194 kg
ISF2 switch/circuit-breaker
7
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