| 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 |