GE - General Electric Dry Type Transformers Drive Isolation Catalog Page

Dry Type Transformers

Section 10

Drive Isolation

Aluminum

Three-Phase

Application

The use of SCR control circuitry with adjustable-speed drives has
resulted in a need for a line of isolation transformers specifically
designed to meet the demanding requirements of SCR drives.
Symmetrically placed taps and added coil bracing minimize
mechanical forces caused by the often severe SCR drive duty
cycles. These features also help protect the transformer from the
regenerative duty and more frequent short-circuits associated

15 - 220 kVA Indoor Type QL UL Listed

Input Output Wiring Weight Frame Product
Voltage Voltage kVA Frequency (Hz) Diagram No.

230 Volts Delta 230Y/133 Volts 15 60Hz 16 240 XV371 9T83B4000G29
230 Volts Delta 230Y/133 Volts 20 60Hz 16 334 XV372 9T83B4001G29
230 Volts Delta 230Y/133 Volts 27 60Hz 16 334 XV372 9T83B4002G29
230 Volts Delta 230Y/133 Volts 34 60Hz 16 334 XV372 9T83B4003G29
230 Volts Delta 230Y/133 Volts 40 60Hz 16 415 XV373 9T83B4004G29
230 Volts Delta 230Y/133 Volts 51 60Hz 16 415 XV373 9T83B4005G29
230 Volts Delta 230Y/133 Volts 63 60Hz 16 620 XV374 9T83B4006G29
230 Volts Delta 230Y/133 Volts 75 60Hz 16 620 XV374 9T83B4007G29
230 Volts Delta 230Y/133 Volts 93 60Hz 16 765 XV375 9T83B4008G29
230 Volts Delta 230Y/133 Volts 118 60Hz 16 1070 XV376 9T83B4009G29
230 Volts Delta 230Y/133 Volts 145 60Hz 16 1070 XV376 9T83B4010G29
230 Volts Delta 230Y/133 Volts 175 60Hz 16 1590 XV377 9T83B4011G29
230 Volts Delta 230Y/133 Volts 220 60Hz 16 1590 XV377 9T83B4012G29
230 Volts Delta 460Y/266 Volts 15 60Hz 16 240 XV371 9T83B4000G28
230 Volts Delta 460Y/266 Volts 20 60Hz 16 334 XV372 9T83B4001G28
230 Volts Delta 460Y/266 Volts 27 60Hz 16 334 XV372 9T83B4002G28
230 Volts Delta 460Y/266 Volts 34 60Hz 16 334 XV372 9T83B4003G28
230 Volts Delta 460Y/266 Volts 40 60Hz 16 415 XV373 9T83B4004G28
230 Volts Delta 460Y/266 Volts 51 60Hz 16 415 XV373 9T83B4005G28
230 Volts Delta 460Y/266 Volts 63 60Hz 16 620 XV374 9T83B4006G28
230 Volts Delta 460Y/266 Volts 75 60Hz 16 620 XV374 9T83B4007G28
230 Volts Delta 460Y/266 Volts 93 60Hz 16 765 XV375 9T83B4008G28
230 Volts Delta 460Y/266 Volts 118 60Hz 16 1070 XV376 9T83B4009G28
230 Volts Delta 460Y/266 Volts 145 60Hz 16 1070 XV376 9T83B4010G28
230 Volts Delta 460Y/266 Volts 175 60Hz 16 1590 XV377 9T83B4011G28
230 Volts Delta 460Y/266 Volts 220 60Hz 16 1590 XV377 9T83B4012G28

with SCR drives. Isolation transformers also reduce line-pollution
feedback resulting from SCR firing circuits. The GE delta-wye
designs meet the NEC requirements for grounded secondary
neutrals that isolate primary distribution systems. kVA ratings of
the DIT line cover most dc motor requirements from 3 to 1000 hp.

Enclosed drive isolation transformers are UL listed.

1

(Lbs) Size Number

10-40

BuyLog™Catalog

Rev. 11/13

Data subject to change
without notice

Dry Type Transformers

Section 10

Drive Isolation

Aluminum

Three-Phase

15 - 220 kVA Indoor Type QL UL Listed (continued)

Input Output Wiring Weight Frame Product
Voltage Voltage kVA Frequency (Hz) Diagram No.

460 Volts Delta 230Y/133 15 60 Hz 16 240 XV371 9T83B4000G23
460 Volts Delta 230Y/133 20 60 Hz 16 334 XV372 9T83B4001G23
460 Volts Delta 230Y/133 27 60 Hz 16 334 XV372 9T83B4002G23
460 Volts Delta 230Y/133 34 60 Hz 16 334 XV372 9T83B4003G23
460 Volts Delta 230Y/133 40 60 Hz 16 415 XV373 9T83B4004G23
460 Volts Delta 230Y/133 51 60 Hz 16 415 XV373 9T83B4005G23
460 Volts Delta 230Y/133 63 60 Hz 16 620 XV374 9T83B4006G23
460 Volts Delta 230Y/133 75 60 Hz 16 620 XV374 9T83B4007G23
460 Volts Delta 230Y/133 93 60 Hz 16 765 XV375 9T83B4008G23
460 Volts Delta 230Y/133 118 60 Hz 16 1070 XV376 9T83B4009G23
460 Volts Delta 230Y/133 145 60 Hz 16 1070 XV376 9T83B4010G23
460 Volts Delta 230Y/133 175 60 Hz 16 1590 XV377 9T83B4011G23
460 Volts Delta 230Y/133 220 60 Hz 16 1590 XV377 9T83B4012G23
460 Volts Delta 460Y/266 15 60 Hz 16 240 XV371 9T83B4000G22
460 Volts Delta 460Y/266 20 60 Hz 16 334 XV372 9T83B4001G22
460 Volts Delta 460Y/266 27 60 Hz 16 334 XV372 9T83B4002G22
460 Volts Delta 460Y/266 34 60 Hz 16 334 XV372 9T83B4003G22
460 Volts Delta 460Y/266 40 60 Hz 16 415 XV373 9T83B4004G22
460 Volts Delta 460Y/266 51 60 Hz 16 415 XV373 9T83B4005G22
460 Volts Delta 460Y/266 63 60 Hz 16 620 XV374 9T83B4006G22
460 Volts Delta 460Y/266 75 60 Hz 16 620 XV374 9T83B4007G22
460 Volts Delta 460Y/266 93 60 Hz 16 765 XV375 9T83B4008G22
460 Volts Delta 460Y/266 118 60 Hz 16 1070 XV376 9T83B4009G22
460 Volts Delta 460Y/266 145 60 Hz 16 1070 XV376 9T83B4010G22
460 Volts Delta 460Y/266 175 60 Hz 16 1590 XV377 9T83B4011G22
460 Volts Delta 460Y/266 220 60 Hz 16 1590 XV377 9T83B4012G22
575 Volts Delta 230Y/133 15 60 Hz 16 240 XV371 9T83B4000G27
575 Volts Delta 230Y/133 20 60 Hz 16 334 XV372 9T83B4001G27
575 Volts Delta 230Y/133 27 60 Hz 16 334 XV372 9T83B4002G27
575 Volts Delta 230Y/133 34 60 Hz 16 334 XV372 9T83B4003G27
575 Volts Delta 230Y/133 40 60 Hz 16 415 XV373 9T83B4004G27
575 Volts Delta 230Y/133 51 60 Hz 16 415 XV373 9T83B4005G27
575 Volts Delta 230Y/133 63 60 Hz 16 620 XV374 9T83B4006G27
575 Volts Delta 230Y/133 75 60 Hz 16 620 XV374 9T83B4007G27
575 Volts Delta 230Y/133 93 60 Hz 16 765 XV375 9T83B4008G27
575 Volts Delta 230Y/133 118 60 Hz 16 1070 XV376 9T83B4009G27
575 Volts Delta 230Y/133 145 60 Hz 16 1070 XV376 9T83B4010G27
575 Volts Delta 230Y/133 175 60 Hz 16 1590 XV377 9T83B4011G27
575 Volts Delta 230Y/133 220 60 Hz 16 1590 XV377 9T83B4012G27
575 Volts Delta 460Y/266 15 60 Hz 16 240 XV371 9T83B4000G26
575 Volts Delta 460Y/266 20 60 Hz 16 334 XV372 9T83B4001G26
575 Volts Delta 460Y/266 27 60 Hz 16 334 XV372 9T83B4002G26
575 Volts Delta 460Y/266 34 60 Hz 16 334 XV372 9T83B4003G26
575 Volts Delta 460Y/266 40 60 Hz 16 415 XV373 9T83B4004G26
575 Volts Delta 460Y/266 51 60 Hz 16 415 XV373 9T83B4005G26
575 Volts Delta 460Y/266 63 60 Hz 16 620 XV374 9T83B4006G26
575 Volts Delta 460Y/266 75 60 Hz 16 620 XV374 9T83B4007G26
575 Volts Delta 460Y/266 93 60 Hz 16 765 XV375 9T83B4008G26
575 Volts Delta 460Y/266 118 60 Hz 16 1070 XV376 9T83B4009G26
575 Volts Delta 460Y/266 145 60 Hz 16 1070 XV376 9T83B4010G26
575 Volts Delta 460Y/266 175 60 Hz 16 1590 XV377 9T83B4011G26
575 Volts Delta 460Y/266 220 60 Hz 16 1590 XV377 9T83B4012G26

1

See page 10-45 for wiring diagrams.

NOTE: Full capacity symmetrical taps (1) +5% and (1) –5%, in primary windings for 230 and 460 Y thru 550 kVA; (1) +6.2% and (1) –6.2% at 750 kVA; (1) +6.4% and (1) –6.4%)

at 1000 kVA. With 575 V primary, symmetrical 5% taps apply thru 750 kVA; at 1000 kVA, (1) +5.1% and (1) –5.1%. For ratings less than 15 kV contact GE Energy Sales
Office.

1

(Lbs) Size Number

Conversion Chart

Decimal Fraction

.13 1/8
.38 3/8
.63 5/8
.88 7/8

Rev. 11/13

Data subject to change
without notice

BuyLog™Catalog

10-41