Friday, March 4, 2011

Importance of transformer

In our country power generate at l1.5kv. At this voltage current will high and if we transmit power on this voltages line losses will increase because P=I2R. For transmission we use high voltages i.e. 500kv, 220kv, 132kv and 66kv. At these voltages current will low and power losses will also less. For this purpose we use a step up transformer which increase the voltage and decrease the current and at grid station a step down transformer convert again these voltages in 11.5kv. We can’t use these high voltages and the help of step-down transformer we convert voltage as requirement.

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