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What is a Power Transformer ?


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The Power Transformer is used on transmission lines for transmission and distribution of relatively large quantities of energy. A power transformer is generally used for power generation and transmission and distribution Sub-Station. The voltage rating of the power transformer is generally above 11 KV.

50 MVA 132/33 KV Power-Transformer

The rating of power transformers is given below

Sl. No. Capacity and voltage ratting of Power-Transformer
1 315 MVA 400/220 KV Single ph auto transformer
2 200 MVA 220/132/33 KV Auto Transformer
3 160 MVA 220/132/33 KV Auto Transformer
4 50 MVA 132/33 KV Power-Transformer
5 31.5 MVA 132/33 KV Power-Transformer
6 20 MVA 132/33 KV Power-Transformer
7 7.5 MVA 66/33 KV Power-Transformer
8 5 MVA 66/33 KV Power-Transformer
9 5 MVA 33/11 KV Power-Transformer
10 6.3 MVA 33/11 KV Power-Transformer
11 10 MVA 33/11 KV Power-Transformer

Different parts of power Transformer

  • Main Tank.
  • H.V Bushing
  • L.V Bushing
  • Conservator Tank
  • Radiator Bank
  • Breather
  • Motor Pump
  • Protection Device of Power Transformer

  • Buchholz Relay
  • Main Tank P.R.D ( Pressure Relief Device )
  • M.O.G ( Magnetic Oil Gauge)
  • W.T.I ( Winding Temperature Indicator )
  • O.T.I ( Oil Temperature Indicator )

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