| General Particulars |
11KV |
33 KV |
| Highest System Voltage( H.S.V.) |
12 KV
( r.m.s.) |
36 KV (r.m.s.) |
| Power frequency dry/ wet withstand voltage on primary winding for one minute |
28 KV
( r.m.s.) |
70 KV ( r.m.s.) |
| Lightning Impulse withstand Voltage ( 1.2 x 50 ?s ) |
75 KV
( r.m.s.) |
170 KV ( r.m.s.) |
| System Particaulars |
|
| 3 Phase 4 Wire with Isolated / Floating neutral as well as solidly earthed. |
3 Nos. CTs & 1 No. 3 - Phase PT
3 Nos. CTs & 3 Nos. 1 - Phase PT |
|
| 3 Phase 4 Wire with Isolated / Floating neutral as well as solidly earthed. |
2 Nos. CTs & 1 No. 3 - Phase PT
2 Nos. CTs & 3 Nos. 1 - Phase PT |
| Specific Particulars |
|
| Short Time Thermal Current (Ith) |
As per customer requirement.
In general CT is to be specified with STF of 100 for 1 Sec. or STC (lth) equal to the system fault level whichever is lower. KA ( r.m.s. ) |
| Output |
10 VA to 100 VA for VT
5 VA to 30 VA for CT |
| Accuracy Class |
0.2S, 0.2, 0.5S, 0.5, 1.0 for CT.
0.2, 0.5 & 1.0 for VT |
| Secondary Current (CT) |
1 Amp or 5 Amp |
| Primary Current (CT) |
As per customer requirement. |
| Primary Voltage (VT) |
11KV, 22KV, 33KV for 3-Phase VT
11/v3, 22/v3, 33/v3 for 1-Phase VT |