AUTOMATIC TRANSFER SWITCH
IEC SERIES
FLOOR STANDING
AUTOMATIC TRANSFER
SWITCH
The IEC Series transfer switch is preconfigured for applications requiring
the robustness and ease of operation
found in a full feature CIRCUIT
BREAKER type transfer switch.
ATS are equipped with a
microprocessor panel, which controls
the operation and displays the status of
the transfer switch’s position, timers
and available sources. The embedded
digital controller offers high reliability
and ease of unattended operation
across a range of most demanded load
transfer applications.
FEATURES
• Ratings 1000 to 6300 amps
• 3 or 4 poles
• 50 or 60Hz up to 600VAC
• Circuit breaker type.
• High transfer speed
• Standard open transition
• IEC 60947-6-1 and IEC 60439-1 listed
• ISO 9001 manufactured
• CE or GOST certification.
• Designed for emergency and standby
applications
• Easy to use and Intuitive settings
PERFORMANCE FEATURES
• Electrically and mechanically interlocked
• Automatic and manual operation.
• Equipped with Electronic Controller.
DESIGN AND CONSTRUCTION
FEATURES
• 3 phase sensing on both sources
• Adjustable voltage and frequency settings
• Test switch (fast test/load/no load) to
simulate normal source failure.
• Form 1 floor standing steel panel.
• Lockable doors
• Bottom cable entry
• Front access
• Type tested panels & bus bar
• Copper bus bar connections
• Optional withdrawable Circuit Breaker
disconnect for safe maintenance
• Components accessible for inspection
and maintenance
• Microprocessor Based controller.
• Caterpillar Solutions warranty.
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AUTOMATIC TRANSFER SWITCH
THE IEC SERIES OF AUTOMATIC TRANSFER SWITCHES (ATS)
This ATS is the result of the association of the best key components for a transfer switch
1. Full rated Circuit Breakers
2. Type tested steel electrical panels
3. Microcontroller based logic device
The transfer switches are assembled and tested in an ISO 9001 certified facility.
Max voltage
Amps Ratings
Cooling
Ambient
IP rating
Color /paint
Separations
Standards and Certifications
ATS Technical Data
600V AC
1000A, 1250A, 1600A, 2000A, 2500A, 3200A,
4000A, 5000A and 6300A
Natural
0 - 40C (Optional 50C)
IP54
RAL 7035 /epoxy polyester
Form 1
IEC 60947-6-1
IEC/EN 60947 AC1
ISO 9001 Quality System Registered
CE certification.
Optional GOST certification
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AUTOMATIC TRANSFER SWITCH
ATS Description
Circuit breakers
ABB, Siemens or similar power interrupters IEC/EN 60947 AC1 listed
Optional Tripping units will convert the interrupters into protection capable circuit breakers. This is
a quite cost saving feature when the ATS is located close to the generator set. It performs then
the generator protection and the switch function, avoiding double cost.
Steel Electrical panels and bus bar systems.
Type-tested bus bar systems
The type-tested bus bar systems consist of standard components and cover a range up to 8750
amps. The systems are tested by KEMA and ASTA according to IEC/EN 60439-1 to a short circuit
level of 120 kA for 1 sec. and a peak withstand current of max. 264kA.
The bus bar sections are easily assembled in templates and fitted into
the panel. With specially developed assembly bolt, it is not necessary
to drill holes or cut threads. The assembly bolt allows for an adjustable
connection, exactly where it is needed on the bus bar holders. All bus
bar joints are designated as maintenance-free according to
DIN 43671.
The bus bar systems are easy to install in the panel assembly.
Standard inserts are available for all kinds of circuit breakers/switches
on the market.
Type-tested connections are ensured through the use of patented flexible
copper conductors, which easily adapt to the various components makes. All inserts are
constructed with much built-in functionality for rational workshop installation and thus increased
competitiveness.
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AUTOMATIC TRANSFER SWITCH
CATERPILLAR pays much attention to both personal safety and operational dependability and
therefore, selects good tested according to the market demand, such as earthquake test, shock
test and arcing test.
Type-tested steel panel systems
The steel panels modular system is based on a concept of standard
modules for the construction of electrical panels. It is possible to
construct an enclosure using a relatively few standard parts and
components.
The versatility of the modular system makes it easy and quick to
assemble and install electrical panels as well as to extend and/or
modify existing enclosures.
These panels are all tested and/or type approved by several of the
world’s most recognized test laboratories.
Furthermore, the panels are certified according to the norms in ISO
9001.
Cubicle Technical data
Technical specification data
Material:
Electro-galvanized / iron-phosphated steel plate
Colour:
Light grey, RAL7035, powder lacquered 60-80 m
Neutral Supply systems
TN-C, TN-S, TN-C-S, TT and IT
Internal separation:
FORM 1, 2a, 2b, 3a, 3b, 4a, 4b
FORM 4, type 1-7
Icc
up to 120 kA
Electro-magnetic compatibility:
EMC environment 1, 2 and # 1 and 2
Type test:
According to IEC/EN 60439-1
Rated current:
Up to 8750 amps
Dielectric properties:
3.5 kV
Rated peak withstand current
Up to 264 kA
Rated short-time withstand current:
Up to 120 kA
Rated voltage, insulation:
1000 V AC
Rated operational voltage:
Up to 1000 V, 50 Hz
Degree of protection:
IP54
Vibration test:
2 G in frequency area 2.5-500 Hz in three
directions
Shock test:
30 G in 12.5 ms in six directions
Seismic test:
Earthquake test carried out with biaxial horizontal
and vertical multi-frequency movements
Arcing test:
’Type B assembly’ according to IEC 61641 as well
as to AS/NZS 3439.1
Surface treatment:
Tropical test ISO 6270, class C2 high, according
to ISO 12944
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AUTOMATIC TRANSFER SWITCH
ATS Logic Controller
The Circuit Breaker type transfer switch makes use of a fully programmable configurable
microprocessor-based controller to allow the utmost in application flexibility.
Further, the controller is offered in a wide array of configurations enabling it to meet the needs of
even the most highly critical load.
Time Delay Normal to Emergency (TDNE)
Time Delay Engine Start (TDES)
Time Delay Emergency to Normal (TDEN)
Time Delay Engine Cool-down (TDEC)
All Phase Under / Over voltage Sensing
Under/Over frequency Sensing
Plant Exerciser
Pre-transfer Signal Output
Pre-exerciser Signal Output
Transfer Fail Alarm Signal Output
Fail Alarm On Display
range : 0 ~ 300 sec
range : 0 ~ 30 sec
range : 0 ~ 300 sec
range : 0 ~ 300 sec
280VAC ~ 370VAC
390VAC ~ 480VAC
range : 40Hz ~ 59Hz
range : 51Hz ~ 70Hz
once per week
range : 1 ~ 99 sec.
range : 1 ~ 99 sec.
ATS controller front and back view
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AUTOMATIC TRANSFER SWITCH
ATS Architecture
The standard ATS architecture is the vertical one described below.
This configuration allows front access and bottom cable entry for source incomers and load
feeder.
Genset
Load
Grid
Standard architecture
Other architectures are available upon request
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AUTOMATIC TRANSFER SWITCH
Options
The IEC series ATS is offered with the below optional features.
Tripping unit
This option elegantly adds an electronic tripping device to one of
the air circuit breakers.
The tripping unit is the ABB electronic PR122 LSI type or
equivalent.
Using this option one can perform 50 and 51 ANSI protection
with the ATS.
One can add the protection to one or to both source sides of the ATS. If the unit is needed on both
sides, please add the option twice.
Please select the appropriate option of 3 or 4 poles.
Withdrawable breaker
This option converts a fixed circuit breaker in a withdrawable one. It adds a compatible drawer to
the cabinet.
Using this option one can easily perform
• service visits of the ATS
• Manual and visible lockout functions with the ATS.
One can add the protection to one or to both source sides of the ATS. If option is needed on both
sides, please add the option twice.
Please select the appropriate option of 3 or 4 poles.
Power monitor Display
Displays kW, kVAr, Amps, Volts phase-phase, phase-neutral and more.
Class 0.5s for measurement and metering according to IEC 62053-22.
The power monitor provides effective solutions for network monitoring,
installation sizing, energy management and electrical network quality
measurement.
One can add the device on one or on both source sides of the ATS. If both
side is needed please add the option twice.
Relay logic.
The relay logic is a classic relay type control of the ATS. It replaces the electronic controller
ATS380.
This option is useful in rare applications where electronic controller is not acceptable.
Generator Set Auxiliaries power feeders.
Provides feeder protection for jacket water heater, space heater and battery charger. 230V or
400V depending on configuration.
GOST certification.
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AUTOMATIC TRANSFER SWITCH
Dimensions
3 Poles
ATS1000
ATS1250
ATS1600
ATS2000
ATS2500
ATS3200
ATS4000
ATS5000
ATS6300
Amps
Rating
1000A
1250A
1600A
2000A
2500A
3200A
4000A
5000A
6300A
B
mm
1848
1848
1848
1848
1848
2040
2040
2040
2040
A
mm
1008
1008
1008
1008
1008
1392
1392
2160
2160
C
mm
816
816
816
816
816
816
816
816
816
Weight
kg
450
460
508
532
610
680
720
790
830
4 Poles
ATS1000
ATS1250
ATS1600
ATS2000
ATS2500
ATS3200
ATS4000
ATS5000
ATS6300
Amps
Rating
1000A
1250A
1600A
2000A
2500A
3200A
4000A
5000A
6300A
B
mm
1848
1848
1848
1848
2040
2040
2040
2040
2040
A
mm
1008
1008
1008
1008
1392
1392
1392
2160
2160
C
mm
816
816
816
816
816
816
816
816
816
Weight
kg
450
460
508
532
610
680
720
790
830
The above dimensions are based on bottom cable entry and front access.
The ATS can adapt to different site configuration.
Please ask your CATERPILLAR Territory Manager or the Geneva solution group.
© 2009 Caterpillar All Rights Reserved.
CAT, CATERPILLAR, their respective logos and “Caterpillar Yellow,” ACERT,
ADEM, as well as corporate and product identity used herein are trademarks
of Caterpillar and may not be used without permission.
Ref. DCQ-367-01
Version 1.2 Aug. 2009
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