| Rated power |
..……KVA |
100 |
| Type of transformer |
– |
Oil immersed ( Hermetically sealed ) |
| Standard |
– |
IEC 76 |
| Cooling System |
– |
ONAN |
| No. Of phase |
– |
3 |
| Frequency |
……….Hz |
50 |
| Rate of voltage : Primary |
……….V. |
22000 |
| : Secondary |
..………V. |
400/230 |
| Vector group |
– |
Dyn 11 |
| Tapping |
Type |
– |
Off Circuit Tap Changer |
|
No. of steps |
– |
5 |
|
Percentage of tapping |
– |
+ 2 x 2.5 % |
| Impedance voltage at 75 C |
………..% |
4 |
| NO – Load current |
…..…..% |
1 |
| Ambient temperature |
…..…….C |
40 |
| Average Temperature rise of winding |
…..…….C |
65 |
| Average Temperature rise of top oil |
…………C |
60 |
| Noise level not more than |
….……dB |
56 |
| No – Load loss |
……..Watt |
250 |
| Load loss at 75 C |
……..Watt |
1550 |
| Efficiency at P.F. = 1 |
: 25 % of rate power |
…….….% |
98.94 |
| : 50 % of rate power |
…………% |
98.08 |
| : 75 % of rate power |
………..% |
98.79 |
| : 100 % of rate power |
…..……% |
98.56 |
| Voltage regulation |
: at P.F. = 0.8 |
…….….% |
3.22 |
| : at P.F. = 0.9 |
…….….% |
2.71 |
| : at P.F. = 1. |
….…….% |
1.17 |
| Impulse Withstand Voltage |
: Primary winding |
..…….KV. |
125 |
| : Secondary winding |
………KV. |
– |
| Power Frequency |
: Primary winding |
….…..KV. |
50 |
| : Secondary winding |
………KV. |
3 |
| Terminal arrangement |
H.V. Side |
Cable |
| L.V. Side |
Cable |
| Installation on |
Pole mounted / Plantform |
