Answer / nagarajan

For example 20/25MVA Power Trans -132/6.9kv
1. FLC of Secondary=2092A
2.Phase to Phase Voltage for Secondary=6.9/1.732=3.98Kv
3.NGR =3980/2092=V/I=1.90Ohms for 30sec
It is only for power transformer.

kindly tell me how the load on generator increase by just increasing the fuel of prime mover, as if for exampple 20 MW gen set is synchronized the load ramps from zero to 20 MW gradully and during this procress only fuel of prime mover increases. Which thing determines the load on generator with respect to fuel

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