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We have a hydro generator with a turbine, but do not have a fly wheel. When jets are open gradually generator speed up, As we need to synchronise this with national grid (50Hz) we connect a resistive load (50Kw) to the generator o/p through a contactor, contactor coil is energised only when generator voltage is build up gradually. But we experiance a sudden blast near the contactor terminals. What could be the reason for this, have any one tried something like this.
Thanks
Wajira
Thanks
Wajira