Kuhlman Electric Corporation

600 Volt
Instrument
Transformers
 600 Volt Table of Contents
March 2008

Description Model Page

4 ¾” / 5 ½” Window CT – Single, Dual & Multi Ratio SCADA-BEH 3-4

5 ¾” Window CT – Single, Dual & Multi Ratio DEH-705 5-6

5 ¾” Window CT – Single, Dual & Multi Ratio SCADA-DEH 7-8

8 ⅛” Window CT – Single, Dual & Multi Ratio CEH-636 9-10

8 ⅛” Window CT – Single, Dual & Multi Ratio SCADA-CEH 11-12

Window CT – Single, Dual & Multi Ratio (High Accuracy Available) SCT-983 13-14

Saturable Reactor – FERROGUARDSM FSR-983 15-16

Window CT – Single, Dual & Multi Ratio (High Accuracy Available) PSH-993 17-18

3 ½” Window CT – Single, Dual & Multi Ratio (High Accuracy Available) RMB(X)-644 19-20

Auxiliary VT – Various Ratios & Accuracies APT-646/733 21-22

Auxiliary CT – Various Ratios & Accuracies ACT-633/645 23-26

Auxiliary CT – Single Ratios & Various Accuracies ACT-983 27-28

Indoor, Split-Core, Window CT – Single Ratio CO-9740 29-30

2
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 SCADA-BEH Current Transformer 600 Volt
Indoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios
Molded Resin, Window Type, Measurement/Relaying March 2008
application
The SCADA-BEH indoor/outdoor, window-type current transform-
er is a 600 volt, 10kV BIL rated unit. Primary current ratios are
available from 50:5 thru 1200:5 at 60 Hertz (Hz) with a Rating
Factor of up to 2.0. This dry-type, solid-cast current transformer
will operate for supervisory control and data acquisition (SCADA)
and with high accuracy for measurement or relay applications.

mechanical description
The core and coil assembly is wound and encapsulated in a mold-
ed cast resin with a window size of 4 ¾” or 5 ½”. The clamp-type
post secondary terminals are ¼”-20 slotted screws with associ-
ated hardware located inside a weather-tight aluminum conduit
box with two (2) 1” NPT conduit hubs.

accuracy performance
The SCADA-BEH can provide up to ± 2.5% Class accuracy at
2.5VA burden for measurement or relay applications (see ratings
specific to each ratio). The transformer is accurate through its
Rating Factor, and can be used continuously to this level.
testing
mounting The unit is individually tested per the IEEE C57.13 standard, in-
The SCADA-BEH is designed for mounting over the bushings of cluding applied and induced voltage, accuracy and polarity.
a distribution class recloser, circuit breaker, or cable termination.
Three adjustable mounting brackets are provided to attach to options
bushing flange bolts. Contact factory for other needs.

ORDERING INFO FOR SCADA-BEH HIGH ACCURACY N/A

Catalog Accuracy/ Rating Catalog 0.15 Accuracy Rating
Ratio
Number* Burden Factor Number Range Factor

50:5 A370050S47 ±2.5% - 1VA 2.0 -- -- --

100:5 A370100S47 ±10% - 2.5VA 2.0 -- -- --
150:5 A370150S47 ±10% - 2.5VA 2.0 -- -- --
200:5 A370200S47 ±5% - 2.5VA 2.0 -- -- --
250:5 A370250S47 ±5% - 2.5VA 2.0 -- -- --
300:5 A370300S47 ±3% - 2.5VA 2.0 -- -- --
300:5 MR A370300M47 ±2.5% - 2.5VA 2.0 -- -- --
300:5 MR A370300M55 TBD 2.0 -- -- --
400:5 A370400S47 ±3% - 2.5VA 2.0 -- -- --
450:5 A370450S47 ±3% - 2.5VA 2.0 -- -- --
450:5 MR A370450M47 ±2.5% - 2.5VA 2.0 -- -- --
500:5 A370500S47 ±3% - 2.5VA 2.0 -- -- --
600:5 A370600S47 ±3% - 2.5VA 2.0 -- -- --
600:5 A370600S55 ±3% - 2.5VA 2.0 -- -- --
600:5 MR A370600M55 ±2.5% - 2.5VA 2.0 -- -- --
800:5 A370800S55 ±3% - 2.5VA 2.0 -- -- --
1000:5 A371000S55 ±3% - 2.5VA 1.5 -- -- --
1200:5 A371200S55 ±3% - 2.5VA 1.5 -- -- --

- 1 Second Thermal/Mechanical Ratings: 80x full winding Inom / Unlimited mechanical.

* Catalog numbers ending in “47” have a 4 ¾” window; ending in “55” have a 5 ½” window.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

3
 600 Volt SCADA-BEH Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
4
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 DEH-705 Current Transformer 600 Volt
Indoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios
Molded Resin, Window Type, Metering/Relaying March 2008
application
The DEH-705 indoor/outdoor, window-type current transformer is
a 600 volt, 10kV BIL rated unit. Primary current ratios are avail-
able from 50:5 to 4000:5 at 60 Hertz (Hz) with a Rating Factor of
up to 4.0. This dry-type, solid-cast current transformer will oper-
ate with high accuracy for metering1 or relay applications.

mechanical description
The core and coil assembly is wound and encapsulated in a
molded cast resin with a window size of 5 ¾”. An optional primary
bus bar with NEMA 4-hole pads can also be provided (3000A
max). The clamp-type post secondary terminals are ¼”-20 slot-
ted screws with associated hardware located inside a clear poly-
carbonate cover. An optional weather-tight aluminum conduit box
with two (2) 1” NPT conduit hubs can be provided for SCADA
applications (see SCADA-DEH on pages 7-8).

accuracy performance
The DEH-705 can provide up to 0.3 Class accuracy for metering1
with burdens of B0.1 up to B1.8 and up to C50 for some relay ap- testing
plications (see ratings specific to each ratio). The transformer is The unit is individually tested per the IEEE C57.13 standard, in-
accurate through its Rating Factor, and can be used continuously cluding applied and induced voltage, accuracy and polarity.
to this level.
options
mounting The DEH is available with a primary bus bar kit, secondary termi-
The DEH is designed for mounting in an upright, underhung or nal box, and/or mounting feet. 1Unit can be certified for revenue
cantilever position. Mounting holes are located in the four cor- metering at certain ratio and burden levels if available and so
ners. specified on inquiries/orders. Contact factory for other needs.

ORDERING INFO FOR DEH-705 HIGH ACCURACY N/A

Catalog Accuracy/Burden Rating Catalog 0.15 Accuracy Rating
Ratio
Number1 Metering1 Relay Factor Number Range Factor

50:5 A03005S08-570 ±10% - 1VA -- 2.0 -- -- --

100:5 A0301S08-570 2.4 B0.1 -- 2.0 -- -- --
200:5 A0302S08-570 1.2 B0.1 C5 2.0 -- -- --
300:5 A0303S08-570 0.3 B0.1 C10 2.0 -- -- --
400:5 A0304S08-570 0.3 B0.2 C15 2.0 -- -- --
400:5 A0304S08-520 0.3 B0.2 -- 4.0 -- -- --
500:5 A0305S08-570 0.3 B0.2 C25 2.0 -- -- --
600:5 A0306S08-570 0.3 B0.2 C30 2.0 -- -- --
800:5 A0308S08-570 0.3 B0.5 C25 2.0 -- -- --
1000:5 A0310S08-570 0.3 B0.5 C40 2.0 -- -- --
1200:5 A0312S08-570 0.3 B0.9 C40 2.0 -- -- --
1500:5 A0315S08-570 0.3 B0.9 C40 2.0 -- -- --
1800:5 A0318S08-570 0.3 B1.8 C40 2.0 -- -- --
2000:5 A0320S08-570 0.3 B1.8 C40 2.0 -- -- --
2500:5 A0325S08-570 0.3 B1.8 C40 1.5 -- -- --
3000:5 A0330S08-570 0.3 B1.8 C50 1.5 -- -- --
4000:5 A0340S08-570 0.3 B1.8 C50 1.0 -- -- --
- Available in dual & multi-ratio designs.
- 1 Second Thermal/Mechanical Ratings: 80x full winding Inom / Unlimited mechanical.
- Units available with mounting feet. Change “08” of catalog number to “18”.
- 1Units can be certified for Revenue Metering. Change “570” of catalog number to “590”.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

5
 600 Volt DEH-705 Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
6
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 SCADA–DEH Current Transformer 600 Volt
Indoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios
Molded Resin, Window Type, Measurement/Relaying March 2008
application
The SCADA-DEH indoor/outdoor, window-type current trans-
former is a 600 volt, 10kV BIL rated unit. Primary current ratios
are available from 50:5 thru 4000:5 at 60 Hertz (Hz) with a Rating
Factor of up to 2.0. This dry-type, solid-cast current transformer
will operate for supervisory control and data acquisition (SCADA)
and with high accuracy for measurement or relay applications.

mechanical description
The core and coil assembly is wound and encapsulated in a
molded cast resin with a window size of 5 ¾”. The clamp-type
post secondary terminals are ¼”-20 slotted screws with associ-
ated hardware located inside a weather-tight aluminum conduit
box with two (2) 1” NPT conduit hubs.

accuracy performance
The SCADA-DEH can provide reasonable accuracy for measure-
ment or relay applications (see ratings specific to each ratio). testing
The transformer is accurate through its Rating Factor, and can be The unit is individually tested per the IEEE C57.13 standard, in-
used continuously to this level. cluding applied and induced voltage, accuracy and polarity.

mounting options
The SCADA-DEH is designed for mounting over the bushings of The SCADA-DEH is available with a ground shield. 1Unit can be
a distribution class recloser, circuit breaker, or cable termination. certified for revenue metering at certain ratio and burden levels
Three adjustable mounting brackets are provided to attach to if available and so specified on inquiries/orders. Contact factory
bushing flange bolts. for other needs.

ORDERING INFO FOR SCADA-DEH HIGH ACCURACY N/A

Catalog Accuracy/Burden Rating Catalog 0.15 Accuracy Rating
Ratio
Number1 Metering1 Relay Factor Number Range Factor

*300:5 A03S0001-570 -- C10 2.0 -- -- --

*450:5 A03S0002-570 -- C15 2.0 -- -- --
*600:5 A03S0003-570 -- C25 2.0 -- -- --
600:5 A03S0009-570 0.3 B0.5 -- 2.0 -- -- --
*600:5 A03S0012-570 -- C25 2.0 -- -- --
600:5 A03S0014-570 0.3 B0.2 -- 2.0 -- -- --
*800:5 A03S0020-570 -- C30 2.0 -- -- --
*1200:5 A03S0018-570 -- C50 2.0 -- -- --
* Multi ratio design. Available in single, dual & multi-ratio designs.
- 1 Second Thermal/Mechanical Ratings: 80x full winding Inom / Unlimited mechanical.
- 1Units can be certified for Revenue Metering. Change “570” of catalog number to “590”.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

7
 600 Volt SCADA-DEH Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
8
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 CEH–636 Current Transformer 600 Volt
Indoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios
Molded Resin, Window Type, Metering/Relaying March 2008
application
The CEH-636 indoor/outdoor, window-type current transformer is
a 600 volt, 10kV BIL rated unit. Primary current ratios are avail-
able from 100:5 to 6000:5 at 60 Hertz (Hz) with a Rating Factor of
up to 4.0. This dry-type, solid-cast current transformer will oper-
ate with high accuracy for metering1 or relay applications.

mechanical description
The core and coil assembly is wound and encapsulated in a
molded cast resin with a window size of 8 ⅛”. An optional primary
bus bar with NEMA 4-hole pads can also be provided (3000A
max). The clamp-type post secondary terminals are ¼”-20 slot-
ted screws with associated hardware located inside a clear poly-
carbonate cover. An optional weather-tight aluminum conduit box
with two (2) 1” NPT conduit hubs can be provided for SCADA
applications (see SCADA-CEH on pages 11-12).

accuracy performance
The CEH-636 can provide up to 0.3 Class accuracy for metering1
with burdens of B0.1 up to B1.8 and up to C50 for some relay ap- testing
plications (see ratings specific to each ratio). The transformer is The unit is individually tested per the IEEE C57.13 standard, in-
accurate through its Rating Factor, and can be used continuously cluding applied and induced voltage, accuracy and polarity.
to this level.
options
mounting The CEH is available with a primary bus bar kit, secondary termi-
The CEH is designed for mounting in an upright, underhung or nal box, and/or mounting feet. 1Unit can be certified for revenue
cantilever position. Mounting holes are located in the four cor- metering at certain ratio and burden levels if available and so
ners. specified on inquiries/orders. Contact factory for other needs.

ORDERING INFO FOR CEH-636 HIGH ACCURACY N/A

Catalog Accuracy/Burden Rating Catalog 0.15 Accuracy Rating
Ratio
Number1 Metering1 Relay Factor Number Range Factor

100:5 A0101S08-570 ±10% - 1VA -- 2.0 -- -- --

200:5 A0102S08-570 1.2 B0.1 -- 2.0 -- -- --
300:5 A0103S08-570 0.6 B0.1 C5 2.0 -- -- --
400:5 A0104S08-570 0.3 B0.1 C10 2.0 -- -- --
500:5 A0105S08-570 0.3 B0.2 C15 2.0 -- -- --
600:5 A0106S08-570 0.3 B0.2 C15 2.0 -- -- --
800:5 A0108S08-570 0.3 B0.5 C20 2.0 -- -- --
1000:5 A0110S08-570 0.3 B0.5 C30 2.0 -- -- --
1200:5 A0112S08-570 0.3 B0.9 C40 2.0 -- -- --
1500:5 A0115S08-570 0.3 B0.9 C50 2.0 -- -- --
1600:5 A0116S08-570 0.3 B0.9 C50 2.0 -- -- --
2000:5 A0120S08-570 0.3 B1.8 C35 2.0 -- -- --
2500:5 A0125S08-570 0.3 B1.8 C40 1.5 -- -- --
3000:5 A0130S08-570 0.3 B1.8 C50 1.33 -- -- --
4000:5 A0140S08-570 0.3 B1.8 C50 1.0 -- -- --
5000:5 A0150S08-570 0.3 B1.8 -- 1.0 -- -- --
6000:5 A0160S08-570 0.3 B1.8 -- 1.0 -- -- --
- Available in dual & multi-ratio designs.
- 1 Second Thermal/Mechanical Ratings: 60x full winding Inom / Unlimited mechanical.
- Units available with mounting feet. Change “08” of catalog number to “18”.
- 1Units can be certified for Revenue Metering. Change “570” of catalog number to “590”.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

9
 600 Volt CEH–636 Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
10
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 SCADA–CEH Current Transformer 600 Volt
Indoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios
Molded Resin, Window Type, Measurement/Relaying March 2008
application
The SCADA-CEH indoor/outdoor, window-type current transform-
er is a 600 volt, 10kV BIL rated unit. Primary current ratios are
available from 100:5 thru 6000:5 at 60 Hertz (Hz) with a Rating
Factor of up to 2.0. This dry-type, solid-cast current transformer
will operate for supervisory control and data acquisition (SCADA)
and with high accuracy for measurement or relay applications.

mechanical description
The core and coil assembly is wound and encapsulated in a
molded cast resin with a window size of 8 ⅛”. The clamp-type
post secondary terminals are ¼”-20 slotted screws with associ-
ated hardware located inside a weather-tight aluminum conduit
box with two (2) 1” NPT conduit hubs.

accuracy performance
The SCADA-CEH can provide reasonable accuracy for measure-
ment or relay applications (see ratings specific to each ratio). testing
The transformer is accurate through its Rating Factor, and can be The unit is individually tested per the IEEE C57.13 standard, in-
used continuously to this level. cluding applied and induced voltage, accuracy and polarity.

mounting options
The SCADA-CEH is designed for mounting over the bushings of The SCADA-CEH is available with a ground shield. 1Unit can be
a distribution class recloser, circuit breaker, or cable termination. certified for revenue metering at certain ratio and burden levels
Mounting brackets can be provided to attach to bushing flange if available and so specified on inquiries/orders. Contact factory
bolts. Contact factory for options. for other needs.

ORDERING INFO FOR SCADA-CEH HIGH ACCURACY N/A

Catalog Accuracy/Burden Rating Catalog 0.15 Accuracy Rating
Ratio
Number1 Metering1 Relay Factor Number Range Factor

100:5 A0101S01-570 ±10% - 1VA -- 2.0 -- -- --

200:5 A0102S01-570 1.2 B0.1 -- 2.0 -- -- --
300:5 A0103S01-570 0.6 B0.1 C5 2.0 -- -- --
400:5 A0104S01-570 0.3 B0.1 C10 2.0 -- -- --
500:5 A0105S01-570 0.3 B0.2 C15 2.0 -- -- --
600:5 A0106S01-570 ±3% - 5VA C15 2.0 -- -- --
800:5 A0108S01-570 0.3 B0.5 C20 2.0 -- -- --
1000:5 A0110S01-570 0.3 B0.5 C30 2.0 -- -- --
1200:5 A0112S01-570 0.3 B0.9 C40 2.0 -- -- --
1500:5 A0115S01-570 0.3 B0.9 C50 2.0 -- -- --
1600:5 A0116S01-570 0.3 B0.9 C50 2.0 -- -- --
2000:5 A0120S01-570 0.3 B1.8 C35 2.0 -- -- --
2500:5 A0125S01-570 0.3 B1.8 C40 1.5 -- -- --
3000:5 A0130S01-570 0.3 B1.8 C50 1.33 -- -- --
4000:5 A0140S01-570 0.3 B1.8 C50 1.0 -- -- --
5000:5 A0150S01-570 0.3 B1.8 -- 1.0 -- -- --
6000:5 A0160S01-570 0.3 B1.8 -- 1.0 -- -- --
- Available in dual & multi-ratio designs.
- 1 Second Thermal/Mechanical Ratings: 60x full winding Inom / Unlimited mechanical.
- 1Units can be certified for Revenue Metering. Change “570” of catalog number to “590”.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

11
 600 Volt SCADA–CEH Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
12
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 SCT–983 Current Transformer 600 Volt
Indoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios
Molded Resin, Window Type, Metering/Relaying March 2008
application
The SCT-983 indoor/outdoor, window-type current transformer
is rated for use on 600 volt systems with 10kV BIL. Primary
current ratios are available from 50:5 to 6000:5 at 60 Hertz (Hz)
with a Rating Factor of up to 4.0. This dry-type, solid-cast cur-
rent transformer will operate with high accuracy for metering or
relay applications.

mechanical description
The core and coil assembly is wound and encapsulated in a
molded cast resin with a standard 5.0” window (other sizes from
2.0” to 7.0”). An optional primary bus bar with NEMA 4-hole
pads can also be provided (5500A max). The secondary termi-
nals are ¼”-20 copper studs with associated hardware. An op-
tional removable terminal box with two (2) 1” NPT conduit hubs
can be provided for outdoor use.

accuracy performance
The SCT-983 will operate with 0.3 Class accuracy for metering
with burdens of B0.1 up to B1.8 and up to C400 for some re- testing
lay applications. The transformer is accurate through its Rating The unit is individually tested per the IEEE C57.13 standard, in-
Factor, and can be used continuously to this level. cluding applied and induced voltage, accuracy and polarity.

mounting options
The SCT is designed for mounting in an upright, underhung or The SCT is available with a primary bus bar kit and/or second-
cantilever position. Mounting slots are provided on the alumi- ary terminal box. The unit can be offered in single or dual core
num base. designs. Contact factory for other needs.

ORDERING INFO FOR SCT-983 HIGH ACCURACY N/A

Catalog Accuracy/Burden (5” ID) Rating Catalog 0.15/0.3 @ Accuracy Rating
Ratio
Number Metering Relay Factor Number Burden Range Factor

50:5 A49S5005010 ±5% - 2.5VA C10 4.0 -- -- -- --

100:5 A49S1015029 1.2 B0.1 C20 4.0 -- -- -- --
200:5 A49S2015049 0.6 B0.1 C40 4.0 -- -- -- --
300:5 A49S3015069 0.3 B0.1 C60 4.0 -- -- -- --
400:5 A49S4015089 0.3 B0.2 C75 4.0 -- -- -- --
500:5 A49S5015109 0.3 B0.5 C100 4.0 -- -- -- --
600:5 A49S6015109 0.3 B0.9 C100 4.0 -- -- -- --
800:5 A49S8015159 0.3 B1.8 C150 3.0 -- -- -- --
1000:5 A49S1025209 0.3 B1.8 C200 2.0 -- -- -- --
1200:5 A49S1225259 0.3 B1.8 C250 2.0 -- -- -- --
1500:5 A49S1525259 0.3 B1.8 C250 1.5 -- -- -- --
2000:5 A49S2025409 0.3 B1.8 C400 1.5 -- -- -- --
2500:5 A49S2525409 0.3 B1.8 C400 1.0 -- -- -- --
3000:5 A49S3025409 0.3 B1.8 C400 1.0 -- -- -- --
4000:5 A49S4025409 0.3 B1.8 C400 1.0 -- -- -- --
5000:5 A49S5025409 0.3 B1.8 C400 1.0 -- -- -- --
6000:5 A49S6025409 0.3 B1.8 C400 1.0 -- -- -- --

- Available in dual & multi-ratio designs.

- IC Approval (AE-1470) is noted by bold catalog number.
- 1 Second Thermal/Mechanical Ratings: 80x full winding Inom / Unlimited mechanical.
- Units available with a secondary terminal box for outdoor use. Add a “T” as the last digit of catalog number.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

13
 600 Volt SCT–983 Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
14
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 FSR–983 Saturable Reactor 600 Volt
Outdoor 600V, 10kV BIL
Molded Epoxy, Wound Type, Ferro-resonance Supression March 2008
application
The FERROGUARDSM (Type FSR-983) outdoor rated saturable
reactor is intended to minimize the possibility of ferro-resonance
activity on wire-wound, inductive designs of voltage transformers,
distribution transformers, and power transformers. This prod-
uct is rated 600V, 10kV BIL for use in secondary circuits of ma-
jor electrical equipment to provide a variable load to counteract
the on-set of ferro-resonance. The FSR-983 is offered in 115V,
120V, 240V, 115/240V or 120/240V ratings to properly apply onto
similarly rated secondary circuits.
Under normal voltage application (voltage rating and +/-10%
variation) the saturable reactor poses a minimal burden to the
main transformer. When voltages increase above the normally
expected values, FERROGUARDSM saturates and dramatically
increases burden requirements on the main transformer, thus
preventing saturation of the protected transformer core. By avoid-
ing core saturation, the unstable conditions which give rise to
ferro-resonance are prevented. Each FSR-983 is designed to
protect a specific transformer application and is so designated on
its nameplate.

mechanical description
The core and coil assembly is wound and encapsulated in a high
dielectric strength cast polyurethane resin to provide high with-
stand capabilities, excellent ultraviolet resistance, moisture bar- mounting
rier and strong physical strength. The secondary terminals have The unit can be mounted in any orientation (either upright, hori-
¼”-20 studs equipped with flat and lock washers located inside a zontal or underhung) using the aluminum base-plate attached to
removable terminal box with two (2) 1” NPT conduit hubs and a the bottom of the saturable reactor. Mounting slots are provided
1” knockout on the bottom of the box. A small 0.75” opening is on the aluminum base.
located in the center of the unit primarily for production use, and
is not meant to be used in application. Relays are located in the testing
secondary box to provide status on the unit’s performance and The unit is individually tested to confirm secondary to ground ap-
powered state. plied voltage withstand, excitation performance and relay opera-
tion. Additional tests include DC resistance for each type, and
performance visual check for components and finish.
The FERROGUARDSM is rated to operate according to its excita-
tion curve and is sized to saturate prior to the primary equipment options
it is protecting. Typical curves shown below are standard de- Other secondary voltages available. Relay output for SCADA sig-
signs rated for 115V or 240V use. The FERROGUARDSM senses nal for ferro-resonance event. Dual or multiple application (up to
abnormal voltage/frequency conditions and reacts by absorbing four protect ranges). Fuse for protection if connected to improper
energy from the system when appropriate. high voltage. Contact factory for other needs.

ORDERING INFO FOR FSR-983

Catalog Application
DC Resistance
Number Voltage
469-0649-951 115VAC 0.5 Ohm
469-0649-952 120VAC 0.5 Ohm
469-0649-953 240VAC 1.0 Ohm
469-0649-954 115/240 VAC 0.5 Ohm/1.0 Ohm
469-0649-955 120/240 VAC 0.5 Ohm/1.0 Ohm

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

15
 600 Volt FSR–983 Saturable Reactor
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
16
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 PSH–993 Current Transformer 600 Volt
Indoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios
Molded Resin, Window Type, Metering/Relaying March 2008
application
The PSH-993 indoor/outdoor, window-type current transformer is
a 600 volt, 10kV BIL rated unit. This unit can be applied over high-
er rated system voltages provided sufficient insulation is available
on the point of application. Primary current ratios are available
from 50:5 to 12,000:5 at 60 Hertz (Hz) with a Rating Factor of up
to 4.0. This unit is ideal for old electrical substation equipment
with no internal space for BCT’s. This dry-type, solid-cast CT will
operate with high accuracy for metering or relay applications.

mechanical description
The core and coil assembly is wound and encapsulated in a
molded cast resin with various window sizes from 5” up to 14”.
The secondary terminals are ¼”-20 copper studs with associated
hardware. An optional removable terminal box with two (2) 1”
NPT conduit hubs can be provided for outdoor use.

accuracy performance
The PSH-993 can provide 0.3 Class accuracy for metering with testing
burdens of B0.1 up to B1.8 and up to C800 for some relay ap- The unit is individually tested per the IEEE C57.13 standard, in-
plications (see ratings specific to each ratio). Upon request, 0.15 cluding applied and induced voltage, accuracy and polarity.
Class metering accuracy is available with burdens of B0.1 up to
B1.8 (see ratings specific to each ratio). The transformer is ac- options
curate through its Rating Factor, and can be used continuously The PSH is available with a secondary terminal box for outdoor
to this level. use. The unit can be offered in single, dual or multiple core de-
signs. Through careful calculation, steel selection and testing,
mounting existing current transformer characteristics can be matched. Ex-
The PSH is designed for mounting in the upright position only. isting characteristic curve would be required. Contact factory for
Open end slots are provided on the aluminum base. other needs.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

17
 600 Volt PSH–993 Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
18
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 RMB(X)–644 Current Transformer 600 Volt
Indoor/Outdoor 600V, 10kV BIL, Single, Dual & Multi Ratios
Molded Resin, Window Type, Metering/Relaying March 2008
application
The RMB(X)-644 indoor/outdoor, window-type current transform-
er is rated for use on 600 volt systems with 10kV BIL. Primary
current ratios are available from 200:5 to 4000:5 at 60 Hertz (Hz)
with a Rating Factor of up to 4.0. This dry-type, solid-cast current
transformer will operate with high accuracy for metering or relay
applications.

mechanical description
The core and coil assembly is wound and encapsulated in a
molded cast resin with a standard 3 ½” window (other sizes from
2” to 6”). An optional primary bus bar with NEMA 4-hole pads
can also be provided (4000A max). The secondary terminals are
¼”-20 copper studs with associated hardware located inside a
removable terminal box with two (2) 1” NPT conduit hubs.

accuracy performance
The RMB-644 will operate with 0.3 Class accuracy for metering
with burdens of B0.1 to B1.8 and up to C800 for some relay ap-
plications. The transformer is accurate through its Rating Factor,
and can be used continuously to this level. The RMBX-644 will
operate with 0.15 Class high accuracy for metering applications
with burdens of B0.1 to B1.8. The transformer maintains 0.3 ac-
curacy from 1% of Inom through its Rating Factor, and can be used
continuously to this level (for 0.15 accuracy range, see ratings testing
specific to each ratio). The unit is individually tested per the IEEE C57.13 standard, in-
cluding applied and induced voltage, accuracy and polarity.
mounting
The RMB is designed for mounting in an upright, underhung or options
cantilever position. Open end slots are provided on the aluminum The RMB is available with a primary bus bar kit. Contact factory
mounting legs. for other needs.

ORDERING INFO FOR RMB-644 HIGH ACCURACY RMBX-644

Catalog Accuracy/Burden (3.5” ID) Rating Catalog 0.15/0.3 @ 0.15/0.3 Rating
Ratio*
Number* Metering Relay* Factor Number Burden Acc Range Factor

200:5 A120200S1 0.3 B0.2 C100 3.0 -- -- -- --

300:5 A120300S1 0.3 B0.5 C200 3.0 -- -- -- --
400:5 A120400S1 0.3 B0.9 C250 3.0 A120400X1 B0.5/B0.9 400/4 to 1200A 3.0
500:5 A120500S1 0.3 B1.8 C300 3.0 A120500X1 B0.5/B1.8 500/5 to 2000A 4.0
600:5 A120600S1 0.3 B1.8 C400 3.0 A120600X1 B0.9/B1.8 600/6 to 2400A 4.0
800:5 A120800S1 0.3 B1.8 C400 2.0 A120800X1 B0.9/B1.8 800/8 to 3200A 4.0
1000:5 A121000S1 0.3 B1.8 C400 2.0 A121000X1 B1.8 10 to 4000A 4.0
1200:5 A121200S1 0.3 B1.8 C400 2.0 A121200X1 B1.8 12 to 4800A 4.0
1500:5 A121500S1 0.3 B1.8 C400 2.0 A121500X1 B1.8 15 to 4500A 3.0
2000:5 A122000S1 0.3 B1.8 C400 2.0 A122000X1 B1.8 20 to 4000A 2.0
2500:5 A122500S1 0.3 B1.8 C400 2.0 -- -- -- --
3000:5 A123000S1 0.3 B1.8 C800 2.0 -- -- -- --
4000:5 A124000S1 0.3 B1.8 C800 1.5 -- -- -- --

600:5 MR A120600M1 0.3 B1.8 C400 2.0 -- -- -- --

1200:5 MR A121200M1 0.3 B1.8 C400 2.0 -- -- -- --
2000:5 MR A122000M1 0.3 B1.8 C400 2.0 -- -- -- --
3000:5 MR A123000M1 0.3 B1.8 C400 2.0 -- -- -- --
4000:5 MR A124000M1 0.3 B1.8 C400 2.0 -- -- -- --

- Available in dual-ratio designs (ratings same as single ratio above, change catalog digit “S” to “D”).
* Units can also be supplied with C800 ratings (add “-512” to the end of the catalog number).
- 1 Second Thermal/Mechanical Ratings: 80x full winding Inom / Unlimited mechanical.
- Available with a primary bar kit (maximum 4000A). Change last digit of catalog from 1 to 3.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

19
 600 Volt RMB(X)–644 Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
20
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 APT–646/733 Voltage Transformer 600 Volt
Indoor 600V, Single, Dual & Multi Ratios
Varnish Insulated, Wound Type, Ratio Correction March 2008
application
The APT-646 / 733 indoor, auxiliary voltage transformer is a 600
volt rated unit for use in secondary circuits. This unit is used to
change the effective voltage for operating watt-hour meters, re-
lays, and other control and metering devices and for secondary
circuit isolation. Due to superior saturation characteristics, these
transformers generally do not saturate under extreme high fault
currents.

mechanical description
The core is made of grain oriented silicon steel laminations. Pri-
mary and secondary coils are of wound type construction from
high temperature resistant magnet wire. After assembly, core and
coils are impregnated with an insulating varnish to prevent mois-
ture penetration, control vibration and increase dielectric strength. mounting
The primary and secondary terminals are 10-32 brass washer- The APT is designed for mounting in an upright, underhung or
head screws for #22 - #10 AWG conductors. The 600V/30A rated cantilever position using the angled mounting feet.
terminal block is conveniently located on top of the transformer.
For multi tap units, two terminal blocks or 12” primary/secondary testing
#12 AWG TEFZEL leads may be supplied. The unit is individually tested per the IEEE C57.13 standard, in-
cluding dielectric tests, accuracy and polarity.
accuracy performance
The APT will operate with 0.6 Class accuracy for voltage correc- options
tion and circuit isolation applications with burdens of 0, W, X and The APT is available in virtually any combination of ratio and ac-
M. The transformer is accurate from 90% to 110% of rated sec- curacy with a Thermal Burden Rating of up to 2000VA. Contact
ondary voltage. factory for other needs.

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
21
 600 Volt APT–646/733 Voltage Transformer
March 2008

22
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 ACT–633/645 Current Transformer 600 Volt
Indoor 600V, Single, Dual & Multi Ratios
Varnish Insulated, Wound Type, Ratio Correction March 2008
application
The ACT-633 / 645 indoor, auxiliary current transformer is a 600
volt rated unit for use in secondary circuits. This unit is used to
change the effective current ratio for operating watt-hour meters,
relays, and other control and metering devices and for secondary
circuit isolation. Due to superior saturation characteristics, these
transformers generally do not saturate under extreme high fault
currents.

mechanical description
The core is made of grain oriented silicon steel laminations. Pri-
mary and secondary coils are of wound type construction from
high temperature resistant magnet wire. After assembly, core and
coils are impregnated with an insulating varnish to prevent mois-
ture penetration, control vibration and increase dielectric strength. mounting
The primary and secondary terminals are 10-32 brass washer- The ACT is designed for mounting in an upright, underhung or
head screws for #22 - #10 AWG conductors. The 600V/30A rated cantilever position using the angled mounting feet.
terminal block is conveniently located on top of the transformer.
For multi tap units, two terminal blocks or 12” primary/secondary testing
#12 AWG TEFZEL leads may be supplied. The unit is individually tested per the IEEE C57.13 standard, in-
cluding dielectric tests, accuracy and polarity.
accuracy performance
The ACT will operate with up to T800 Class accuracy for ratio options
correction and circuit isolation applications. The transformer is The ACT is available in virtually any combination of ratio and ac-
accurate through its Rating Factor, and can be used continuously curacy with a Rating Factor of up to 1.5. Contact factory for other
to this level. needs.

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
23
 600 Volt ACT–633/645 Current Transformer
March 2008

24
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 ACT–633/645 Current Transformer 600 Volt
March 2008

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

25
 600 Volt ACT–633/645 Current Transformer
March 2008

26
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 ACT–983 Current Transformer 600 Volt
Indoor/Outdoor 600V, (10kV BIL), Single Ratios
Molded Epoxy, Wound Type, Metering/Relaying March 2008
application
The ACT-983 indoor/outdoor auxiliary current transformer is a
600 volt rated unit for use in secondary circuits. The unit can be
provided with 10kV BIL for use in primary circuits. This dry-type,
solid-cast current transformer will operate with high accuracy for
metering or relay applications. The unit is best suited for use in
changing the effective current ratio for operating watt-hour me-
ters, relays, and other control and metering devices needing rev-
enue metering accuracy. Due to superior saturation characteris-
tics, these transformers generally do not saturate under extreme
high fault currents.

mechanical description
The core and coil assembly is wound and encapsulated in a
molded cast resin. The secondary terminals are ¼”-20 copper
studs with associated hardware. An optional removable terminal
box with two (2) 1” NPT conduit hubs can be provided for outdoor
use.

accuracy performance
The ACT-983 will operate with 0.3 Class accuracy for metering
with burdens of B0.1 up to B1.8 and up to C800 for ratio correc- testing
tion and circuit isolation applications. The transformer is accurate The unit is individually tested per the IEEE C57.13 standard, in-
through its Rating Factor, and can be used continuously to this cluding applied and induced voltage, accuracy and polarity.
level.
options
mounting The ACT is available in virtually any combination of ratio and ac-
The ACT is designed for mounting in an upright, underhung or curacy with a Rating Factor of up to 4.0. Unit can be provided
cantilever position. Mounting slots are provided on the aluminum for use in primary circuits with 4kV isolation. Contact factory for
base. other needs.

HOW TO ORDER

When ordering ACT type Auxilliary CTs, include the following information:
1. Current ratio - ____________ (Primary:Secondary, i.e. 5:3.33)
2. Type of Circuit - ____________ (i.e. Primary or Secondary)
3. Accuracy and burden requirements, for example,
Metering - ____________ (0.3 B0.1 thru B1.8)
Relaying - ____________ (C100, C200, C400, or C800 or other)
If IEC ratings, list class and burden - ____________ (e.g.,class 0.2-20 VA, 5P20-40 VA)
4. Continuous Rating Factor - ____________ (standard is RF=1.5)
5. Frequency - ____________ (standard is 60 Hz)
6. OPTIONAL: Conduit Box Hub Size - ____________ (standard is 1” NPT)
NOTE – Units are custom manufactured to customer specifications. Contact factory to dicuss other options.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

27
 600 Volt ACT–983 Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
28
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage
 CO–9740 Current Transformer 600 Volt
Indoor 600V, 10kV BIL, Single Ratios
Tape Wound, Split Core, Window Type, Metering/Relaying March 2008
application
The CO-9740 indoor, split-core window-type current transformer
is a 600 volt, 10kV BIL rated unit. Primary current ratios are avail-
able from 100:5 to 4000:5 at 60 Hertz (Hz) with a Rating Factor
of up to 4.0. This unit is convenient to install where the primary
conductor cannot be broken or opened. This tape-wound, split-
core current transformer will operate with reasonable accuracy
for metering1 or relay applications.

mechanical description
The windings are high temperature resistant magnet wire wound
on 3 legs of a rectangular cut core wrapped in polyester tape.
Window sizes are available in standard 2 ½”, 5 ½” and 9” square
openings. After assembly, the tape-wound core and coil are im-
pregnated with a black insulating varnish to prevent moisture pen-
etration, control vibration and increase dielectric strength. The
core is in two completely removable halves, joined by a stainless
steel strap and worm gear and is marked to assure correct align-
ment during reassembly. The secondary terminals are #10-32
zinc plated screws.

accuracy performance
The CO-9740 can provide up to a 0.3 Class accuracy for meter-
ing1 with burdens of B0.1 up to B1.8 and up to C400 for some
relay applications (see ratings specific to each ratio). The trans- testing
former is accurate through its Rating Factor, and can be used The unit is individually tested per the IEEE C57.13 standard, in-
continuously to this level. cluding dielectric tests, accuracy and polarity.

mounting options
The CO is designed for mounting over large cables or insulated The CO is available with a mounting base, in non-standard win-
bus and may rest against a 600 volt conductor or on a nearby dow sizes and can be provided for certain outdoor applications.
mounting surface. However, for best results it is recommended 1
Unit can be certified for revenue metering at the site once the
that the unit be centered around the conductor. two halves are reconnected. Contact factory for other needs.

ORDERING INFO FOR CO-9740 HIGH ACCURACY N/A

Catalog Accuracy/Burden (5.5” ID) Rating Catalog 0.15 Accuracy Rating
Ratio
Number* Metering Relay Factor Number Range Factor

100:5 A19R55S01-570 1.2 B0.1 C10 4.0 -- -- --

200:5 A19R55S02-570 0.6 B0.1 C25 4.0 -- -- --
300:5 A19R55S03-570 0.3 B0.2 C35 4.0 -- -- --
400:5 A19R55S04-570 0.3 B0.5 C50 4.0 -- -- --
500:5 A19R55S05-570 0.3 B0.5 C50 4.0 -- -- --
600:5 A19R55S06-570 0.3 B0.9 C75 4.0 -- -- --
800:5 A19R55S08-570 0.3 B1.8 C100 3.0 -- -- --
1000:5 A19R55S10-570 0.3 B1.8 C100 2.0 -- -- --
1200:5 A19R55S12-570 0.3 B1.8 C150 2.0 -- -- --
1500:5 A19R55S15-570 0.3 B1.8 C150 1.5 -- -- --
1600:5 A19R55S16-570 0.3 B1.8 C200 1.5 -- -- --
2000:5 A19R55S20-570 0.3 B1.8 C200 1.0 -- -- --
3000:5 A19R55S30-570 0.3 B1.8 C300 1.0 -- -- --
4000:5 A19R55S40-570 0.3 B1.8 C400 1.0 -- -- --

- 1 Second Thermal/Mechanical Ratings: 80x full winding Inom / Unlimited mechanical.

* Units available in different window sizes, 2.75” and 9.0”. Change “55” in cat # to “27” or “90”.

3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage

29
 600 Volt CO–9740 Current Transformer
March 2008

NOTE: OUTLINES ARE FOR REFERENCE ONLY. CONTACT FACTORY FOR ACTUAL DESIGN DRAWINGS.
30
3022 NC 43 North • Pinetops, NC 27864 • Phone: +1 252 827-3212 • www.abb.com/mediumvoltage