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S. No.

Name of Items

Specification No.

STR No.

1.

25KV
AC single pole & double pole Motorised isolators

TI/SPC/PSI/ISOLTR/1060

-

2.

Traction
transformer ,30MVA,110/27kV with on load tap changer

TI/SPC/PSI/30TRN/1050

TI/STR/014

3.

Traction
transformer ,30MVA,220,132,110,66/27kV with on load tap changer

TI/SPC/PSI/30TRN/2070

TI/STR/014

4.

Power transformer 21.6 MVA, single phase 50 Hz, 220/132/110/66/27kV
for traction substation.

ETI/PSI/118 (10/93)

TI/STR/014

5.

Specification for 245/145/123/72.5 kV double pole
and triple pole isolators.

ETI/PSI/122(3/89)

-

6.

21.6 MVA, 220/132/110 / 66 kV/2x27 kV, single phase,
50 Hz Traction power transformer for AT feeding system

ETI/PSI/123(9/93)

TI/STR/014

7.

54 MVA, 220/2x27 kV Scott-connected power transformer
for 2x27 kV AT feeding system.

ETI/PSI/124(7/95)

TI/STR/014

8.

8 or 5 MVA, 2x27 kV 50 Hz, auto transformer for 2x27
kV AT feeding system.

ETI/PSI/125(7/97)

TI/STR/014

9.

25 kV double pole outdoor, vacuum interrupters for
Railway switching stations for 2x25 kV AT feeding system.

ETI/PSI/132(8/89)

TI/STR/015

10.

25 kV ac double pole isolators for 2x25 kV AT feeding
system.

ETI/PSI/133(8/89)

-

11.

25 kV ac double pole outdoor SF6 interrupters for
2x25 kV AT feeding system.

ETI/PSI/139 (12/89)

TI/STR/015

12.

Specification for SF6 gas leakage detector.

ETI/PSI/148(4/92)

-

13.

25 kV ac 50 Hz out door pole mounted SF6 interrupter.

ETI/PSI/150(4/94)

TI/STR/015

14.

25 kV ac 50 Hz single pole outdoor pole mounted vacuum
interrupter.

ETI/PSI/159 (10/94)

TI/STR/015

15.