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 |