REACTIVAR Power Factor Capacitors

REACTIVAR Power Factor Capacitors
CLASS 5860
REACTIVAR™ Power Factor Capacitors
AV6000 ANTI-RESONANT AUTOMATIC BANKS
Square D's new REACTIVAR AV6000 Antiresonant Automatic Power Factor
Correction banks provide power factor
correction in harmonic-rich
environments.
■ Power Factor Correction without the risk of harmonic
resonance
■ Heavy duty dry capacitors provide no risk of fluid
leakage, no environmental pollution and no need for
drip pans.
■ Iron core reactors with thermal overload protection
de-tune the network to prevent resonance.
■ 100 kA current limiting fuse in each capacitor cell
provides protection against both low and high current
faults within the capacitor element.
■ System may remove up to 50% of 5th harmonic.
■ “MCC” style enclosures available up to 1200kVAR,
600V, Main lugs or main breaker.
■ Advanced microprocessor controller reduces
commissioning time by offering automatic C/K ratio
selection, CT polarity retrieval, phase rotation
retrieval and signalling of connection errors.
■ 16 character alphanumeric LCD display on controller
displays PF and connected steps, alarm conditions,
load and reactive currents, voltage THD and more.
■ Controls are viewable through a safety window.
■ Attractive finish: Units constructed with removable 16
gauge steel panels over a welded 14 gauge steel
frame. Indoor (Type 1) units finished in a mediumblue textured paint finish. ASA 61 and 49 available on
request. Outdoor (Type 3R) units are painted ASA 61
as standard.
■ Split core CT included as standard
■ Built to CSA and UL Standards
The AV6000 Capacitive/Inductive Power Factor Correction system is designed to provide
power factor correction in today's industrial networks which contain harmonic energies
which would otherwise damage standard fixed or automatic capacitor banks.
The AV6000 anti-resonance capacitor bank includes custom designed iron core reactors in
series with three phase capacitor modules. The series capacitor/reactor combination
prevents resonance by tuning the network below the first dominant harmonic (usually the
5th, or 300hz). Since three phase networks typically have little or no harmonic current below
the fifth, there is no energy available to resonate. In addition to providing power factor
correction without the risk of resonance, the AV6000 may absorb up to 50% of the 5th
harmonic current, depending upon network characteristics. This has the effect of reducing
harmonic voltage distortion, thus improving overall network conditions
The Harmonic Problem
Harmonics and Standard Capacitors don‘t mix:
Linear
Non-linear
Harmonics are a natural by-product of non-linear loads such as drives (AC and DC), motor
soft starters, welders, UPS systems, robotics and other electronic loads. Harmonics are
higher-than-60Hz currents and voltages which are produced by these devices in response to
the manner in which they draw current (see figure 1). As more and more non-linear loads
are added to the electrical distribution system, the amount of harmonic current rises.
Harmonics can cause serious problems to arise when standard fixed or automatic power
factor correction capacitors are added to the network.
The problem:
Fig. 1: Non-Linear Current
Fig. 2: Resonant Circuit Formed From Capacitor in
Parallel with Source impedance (Supply Transformer)
The solution:
The simplest method to accomplish power factor
correction while maintaining harmonic control is to add
an AV6000 anti-resonant capacitor bank. The AV6000
includes iron-core reactors in series with heavy duty
capacitor elements. The series capacitor/reactor
combination tunes the network below the first dominant
harmonic (usually the 5th). Since most three phase
networks contain little or no harmonic current below the
5th, there is no energy available to resonate. Figure 4
illustrates the effect of the AV6000 Anti-resonant bank
on the harmonic currents. Note that there is a reduction
in harmonic current amplification. In addition, because
the impedance of the AV6000 is low near the fifth
harmonic, it may actually absorb up to 50% of that
current. This has the desirable effect of reducing overall
voltage distortion.
There are two main concerns to consider when applying power factor correction capacitors.
First, capacitors are a natural low impedance path for harmonic currents and will therefore
absorb these energies. The increased capacitor current results in higher element
temperature which negatively impacts the life of the capacitor. Also, because capacitors
reduce the network impedance, capacitors can actually increase the level of harmonic
current on the network. It’s important to remember that while capacitors don’t produce
harmonic currents, they can magnify their effects. Furthermore, harmonic voltages present
on the network create voltage stresses on the capacitor dielectric which can cause
premature dielectric breakdown.
The second, and potentially more serious concern, is network resonance. When capacitors
are added to the network, they set up a parallel resonance circuit between the capacitors
and the system inductance’s (see figure 2). Harmonic current components that are close to
the parallel resonance point are magnified (see figure 3). The magnified currents can cause
serious problems such as excessive voltage distortion, nuisance fuse operation, overvoltage
trip of drives and insulation breakdown within motors, transformers and conductors.
Fig. 3: Magnification of Harmonic Current When Standard
Capacitors are Added to the Network
Fig. 4: Effect on Harmonic Current when Anti-resonant
Capacitor Bank is Applied
The Harmonic Solution
When to apply an anti-resonant capacitor
bank:
It is recommended that, if more than 15% of the load
connected to the transformer is non-linear and power
factor correction is desired, a de-tuned or anti-resonant
bank should be applied. Below this value, a standard
(i.e. non-filtered) capacitor bank can be safely applied.
For example, if you have 2000 kW of connected load, of
which 400 kW is variable speed drives (AC or DC), then
the percent non-linear load is 20% (400/2000).
Therefore, an AV6000 Anti-resonant bank is
recommended.
Applying capacitors to a network which contains
harmonics may warrant special considerations. We
highly recommend that you contact the Square D/
Groupe Schneider Power Quality Correction Group for
application assistance. Trained specialists are available
to assess your conditions and make recommendations
to ensure that the most effective solution is applied. Our
specialists can provide telephone application assistance
or arrange for a site visit to assess your needs.
Solutions can include computer network simulation
resulting in custom equipment. When calling for
assistance, please have available the following:
■ 12 months of utility billing information
■ A single line diagram of the network showing nature
of loads (e.g. 150 HP FVNR starters; 200 HP VFD;
etc.)
■ Transformer(s) kVA rating and percent impedance
(%Z)
■ Primary fault current level (if available)
■ Primary & secondary voltages
■ Location of utility metering
■ Size and location of any existing capacitors
For technical assistance, please consult your
nearest Square D/Groupe Schneider sales office.
Modular construction with safety in mind:
The AV6000 is constructed with free standing, modularized “MCC style” enclosures.
Capacitor blocks wired to HRC dead-front fuse holders and Telemecanique contactors are
mounted on modular plates and wired to three phase iron core reactors. The entire
assembly can be field installed, facilitating cost effective future expansion. AV6000 systems
are constructed with up to 300 kVAR per section. For larger AV6000 systems, additional
sections are added. Standard cubicle features includes:
■
■
■
■
■
Finger-safe power and control wiring.
Dead-front fuse holders.
All copper bus, power and control wiring.
Lockable two-point flush-mount door latching.
Forced air ventilation controlled from a two stage temperature alarm. The first setpoint
turns on the fan when the ambient rises above a preset level. The second setpoint
automatically disconnects the bank to prevent damage. When the ambient returns to
normal, the unit will return to normal operation.
■ An attractive medium blue textured polyester paint (Indoor units). The textured paint finish
resists dents and scratches and the standard blue color sets the equipment apart (ASA
49 & 61 grey available). Outdoor units are painted standard ASA 61.
Modularity and Performance
Advanced controller offers userfriendly interface:
With its ergonomic design, the new Square D
Varlogic power factor controller offers
sophisticated electronic interface to facilitate
ease of set-up, installation and control.
New advanced features make commissioning and operation simple:
■
■
■
■
■
■
■
Iron Core Reactors are designed for the
AV6000:
Automatic C/K ratio selection.
Automatic CT polarity retrieval.
Automatic phase rotation polarity detection.
Manual operation with automatic return.
Automatic no-voltage release and automatic staged reconnection.
User-friendly menu-driven programming with 16 character alphanumeric LCD display
Alarm relay and indication for: low power factor, hunting, abnormal PF,
overcompensation, undervoltage, overvoltage, overcurrent, frequency not detected, high
voltage THD, capacitor overload, low capacitor output and over temperature.
■ Integral alphanumeric LCD display with graphical symbols includes display of: power
factor, steps connected, period before switching, step configuration (auto, fixed, not
used), step output status, real and reactive currents and THD Voltage.
The iron core reactors employed in the AV6000 are
custom designed and manufactured at our own factory
under tight tolerances specifically for the AV6000.
■ Reactors are constructed with an EI laminated low
hysteresis iron core with precision controlled air
gaps.
■ Three phase windings consist of rectangular cross
section, Class H insulated all-copper conductors.
■ Entire reactor assembly is impregnated and baked
with high temperature thermo-setting Epoxy resin to
provide superior insulation levels.
■ With any detuned bank, harmonic current overload is
always a concern. The most effective way to protect
the reactors is to monitor their temperature. For this
reason, each reactor has a thermistor embedded in
the center leg and wired to a Telemecanique
thermistor relay. The system will shut down and
annunciate should it overheat, usually as a result of
excessive harmonic currents unaccounted for in the
original specification. Automatic reset is standard.
Heavy duty Capacitor elements:
Merlin Gerlin Varplus M capacitors have a unique patented design that has been in service
for over 10 years on several million elements around the world. Advances in materials and
design provide reliability, safety and longevity unsurpassed in the industry:
■ The HQ (High Quality) protection system provides protection against two types of endof-life faults: High current faults are protected by an HRC cartridge fuse, low current faults
are protected by a combination of the overpressure disconnect device and the HRC fuse.
■ The self-healing metallized polypropylene film elements require no gas or liquid
impregnation, thus they are completely environmentally safe.
■ H Type cells used as standard are designed for the rigors of today's harmonic rich
networks: Elements for 480V networks are rated 590V +10% overvoltage; Elements for
600 V networks are rated 690V +10% overvoltage.
■ The unique cell design encapsulates the elements in a polyphenylene plastic housing
mounted on a moulded polycarbonate plastic base. The plastic materials virtually
eliminate the chances of ground faults originating from the cells. Furthermore, the design
of the cells leads to better heat dissipation resulting in cooler operation and longer life.
AV6000 Selection and Dimensions
AV6000 Series
480 Volt 3 Phase/60Hz◆
Main Lugsor Main Breaker
kVAR
Rating ■
Steps
kVAR per
Step ■
480V
100
150
200
250
300
350
400
450
500
550
600
(Qty x kVAR)
4x25
3x50
4x50
1x50, 2x100
2x50, 2x100
1x50,3x100
4x100
1x50,4x100
5x100
1x50,5x100
6x100
kVAR
25
50
50
50
50
50
100
50
100
50
100
AV6000 Series
Standard Lugs
Provided ■
Main Lugs
Catalogue No.●
AV010046AV2N5N
AV015046AV5N5N
AV020046AV5N6N
AV025046CV5N6N
AV030046BV5N6N
AV035046CV5N6N
AV040046AV8N6N
AV045046CV5N6N
AV050046AV8N8N
AV055046CV5N8N
AV060046AV8N8N
Encl.▼
4
4
4
4
4
5
5
5
5
5
5
(Qty x AWG)
2x1/0-2x350 MCM
2x1/0-2x350 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
4x1/0-4x500 MCM
4x1/0-4x500 MCM
4x1/0-4x500 MCM
Type 1 Enclosure ✙
Standard Lugs
Provided ■
Main Breaker
Catalogue No.●
BV010046AV2N4N
BV015046AV5N4N
BV020046AV5N4N
BV025046CV5N6N
BV030046BV5N6N
BV035046CV5N6N
BV040046AV8N6N
BV045046CV5N6N
BV050046AV8N8N
BV055046CV5N8N
BV060046AV8N8N
Encl.▼
4
4
4
5
5
5
5
5
5
6
6
(Qty x AWG)
3x2/0-3x300 MCM
3x2/0-3x300 MCM
3x2/0-3x300 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
4x1/0-4x500 MCM
4x1/0-4x500 MCM
4x1/0-4x500 MCM
600 Volt 3 Phase/60Hz◆
Main Lugsor Main Breaker
Standard Lugs
Provided ■
Standard Lugs
Provided ■
Steps
kVAR per
Step ■
600V
100
150
200
250
300
350
400
450
500
(Qty x kVAR)
4x25
3x50
4x50
1x50,2x100
2x50,2x100
1x50,3x100
4x100
1x50,4x100
5x100
kVAR
25
50
50
50
50
50
100
50
100
Catalogue No.●
AV010066AV2N5N
AV015066AV5N5N
AV020066AV5N6N
AV025066CV5N6N
AV030066BV5N6N
AV035066CV5N6N
AV040066AV8N6N
AV045066CV5N6N
AV050066AV8N8N
Encl.▼
4
4
4
4
4
5
5
5
5
(Qty x AWG)
2x1/0-2x350 MCM
2x1/0-2x350 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
4x1/0-4x500 MCM
Catalogue No.●
BV010066AV2N4N
BV015066AV5N4N
BV020066AV5N4N
BV025066CV5N6N
BV030066BV5N6N
BV035066CV5N6N
BV040066AV8N6N
BV045066CV5N6N
BV050066AV8N8N
Encl.▼
4
4
4
5
5
5
5
5
5
(Qty x AWG)
3x2/0-3x300 MCM
3x2/0-3x300 MCM
3x2/0-3x300 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
2x1/0-2x500 MCM
4x1/0-4x500 MCM
550
600
1x50,5x100
6x100
50
100
AV055066CV5N8N
AV060066AV8N8N
5
5
4x1/0-4x500 MCM
4x1/0-4x500 MCM
BV055066CV5N8N
BV060066AV8N8N
6
6
4x1/0-4x500 MCM
4x1/0-4x500 MCM
◆
●
▼
✴
✙
■
Recommended Minimum
Cable Ampacity
135% Rated Current
178
267
356
446
535
624
713
802
891
980
1069
Type 1 Enclosure ✙
kVAR
Rating ■
Main Lugs
Recommended Minimum
Size Protection Rating✴
@480V
Fuse
Breaker/Trip
250
400/200
400
400/300
500
400/400
600
800/500
700
800/600
800
800/700
900
800/800
1000
1200/900
1100
1200/1000
1200
1200/1200
1400
1200/1200
Main Breaker
Recommended Minimum
Size Protection Rating✴
@600V
Fuse
Breaker/Trip
200
400/200
300
400/250
400
400/350
500
400/400
600
800/500
700
800/600
700
800/700
800
800/800
900
800/800
1000
1100
1200/900
1200/1000
Recommended Minimum
Cable Ampacity
135% Rated Current
143
214
285
356
428
499
570
642
713
784
855
A single remote Current Transformer (included) must be located on the bus/cable at the main service entrance terminal compartment. CT included in price. Specify CT ratio at time of order.
Top entry is standard. For alternate entry, consult your nearest Square D/Groupe Schneider sales office.
For dimensions, see below.
Consult local Electrical Codes for proper sizing of Moulded Case Circuit Breakers and Disconnect Switches.
Type 3R enclosure available. Consult your nearest Square D/Groupe Schneider sales office.
For additional sizes, ratings or options, please consult your nearest Square D/Groupe Schneider sales office.
Dimensions ✘
6.00
(152)
Dimensions “B” (width)
Type
Encl.
Sections
AV6000
4
5
6
1
2
3
IN
(mm)
23.5
47.0
70.5
597
1194
1791
✘ Dimensions are approximate only. Do not use for construction. For actual
dimensions, contact your local Square D/Groupe Schneider sales office.
APPROX.
56.00
(1410)
TOP
VIEW
Options and Wiring Diagram
Other products and services:
Available Options
■ REACTIVAR low voltage Fixed Capacitors
■ AV4000 and AV5000 standard automatic capacitor
banks for power factor correction in electrical
networks which have less than 15% non-linear loads.
■ AV7000 Harmonic filters for removal of harmonics
■ Active (electronic) filters
■ AV8000 and AV9000 Real Time Reactive
Compensation banks and filters for highly transient
loads.
■ Medium voltage fixed and automatic switched banks
up to 37 kV
■ Medium voltage Real Time Reactive Compensation
Banks up to 15 kV
■ Engineering services such as:
- Size and rating assistance
- Harmonic analysis
- Computer simulations
- Commissioning
- Service contracts
Silver flashed copper bus, power and control wiring
Heavy duty capacitor elements
Iron core reactors with thermistor overload protection
Heavy duty control transformer w/ Class A ground fault protection
Finger safe control & power wiring
Advanced 12 step controller
C/W:Digital display incl. power factor meter
Capacitance loss each step
Automatic commissioning incl. auto C/K selection
Comprehensive alarms incl. voltage THD
Ambient overload protection
Split core CT
CT shorting block
Main lugs
Main breaker
Top entry
Bottom or side entry
Type 1 Enclosure (precaution blue standard)
Type 3R Enclosure (ASA 61 standard)
ASA 49 paint (Type 1 or 3R)
Powerlogic circuit monitor
Special control arrangements
Other voltages or frequencies
Other staging ratio's
Fixed stages
■ Standard feature
O Available option
Consult your nearest Square D/Groupe Schneider
sales office for pricing
Application Note:
It is imperative to ensure that no other capacitors (fixed
or automatic) are connected to the same network as the
AV6000 Anti-resonant Automatic Capacitor Bank. The
components within the AV6000 are carefully chosen to
avoid network resonance between the substation
transformer and the AV6000 capacitor elements.
Additional capacitors on the network will alter the
characteristics of the AV6000, possibly leading to
network resonance. The application of this product may
warrant special consideration, please contact the
Square D/Groupe Schneider Power Quality Correction
Group, or your nearest Square D/Groupe Schneider
field office for application assistance before sizing a unit.
AV6000
■
■
■
■
■
■
■
■
■
■
■
■
■
■
O
■
O
■
O
O
O
O
O
O
O
Wiring Diagram
Specifications are subject to change without notice.
VISIT OUR WEBSITE AT WWW.REACTIVAR.COM
Schneider Electric
Schneider Electric
Schneider Canada
6675 Rexwood Road
Mississauga ON L4V 1V1
Tel: (905) 678-7000
Fax: (905) 678-9873
19 Waterman Avenue
Toronto, Ontario M4B 1Y2
www.schneider.ca
www.squared.com
Tel.: (416) 752-8020
Fax: (416) 752-6230
5860HO9701R1
© 1998 Schneider Canada, All Rights Reserved
November, 1998
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