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>> INTERNATIONAL>> SWITCHGEAR>> CURRENT TRANSFORMERS |
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Approvals :
KEMA - Netherlands, CPRI - India
Standards : IEC 44 - 1996 (Formerly IEC 185
- 1987),
ANSI C57. 13 - 1978. |
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| Sno. |
Type
Ref. |
Rated
Voltage (kv) |
Insulation
Level (kV/kVp) |
Rated
Current (A) |
Secondary
Current (A) |
No.
of Cores |
STR
kA/Sec |
| (a) LIVE TANK
TYPE |
| 1 |
CGC |
24 |
50/125 |
50
- 2500 |
1
OR 5 |
3 |
25/1,
3 |
| 2 |
CGC |
36 |
70/170 |
50
- 2500 |
1
OR 5 |
3 |
25/1,
3 |
| 3 |
CT |
52 |
95/250 |
50
- 2500 |
1
OR 5 |
3 |
31.5/1,
3 |
| 4 |
CT |
72.5 |
140/325 |
50
- 2500 |
1
OR 5 |
3 |
31.5/1,
3 |
| 5 |
IOSK |
123 |
230/550 |
50
- 2500 |
1
OR 5 |
5 |
40/1,
3 |
| 6 |
IOSK |
145 |
275/650 |
50
- 2500 |
1
OR 5 |
5 |
40/1,
3 |
| 7 |
IOSK |
170 |
325/750 |
50
- 2500 |
1
OR 5 |
5 |
40/1,
3 |
| 8 |
IOSK |
245 |
460/1050 |
50
- 2500 |
1
OR 5 |
5 |
40/1,
3 |
| 9 |
IOSK |
420 |
630/1425
& 1050 |
50
- 2500 |
1
OR 5 |
5 |
40/1,
3 |
| (b) DEAD TANK
TYPE |
| 1 |
IOSS |
123 |
230/550 |
50
- 800 |
1
OR 5 |
5 |
25/1 |
| 2 |
IOSS |
145 |
275/650 |
50
- 800 |
1
OR 5 |
5 |
25/1 |
*The above
are typical values.
Other specs are also feasible.
Standard value of creepage is
25 mm / kV
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