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Hello everyone,
We have recently replaced 11KV XLPE cable of Alternator (from alternator to 11KV GCB) of one of our Gas Turbine (Fr 5, GE make, 20 MW).
After replacement of the HT cable when we first started the GT, we wanted to raise the voltage manually step by step so that voltage would build up gradually and hence put the DAVR (Brush make) in manual mode.
But the moment we switched ON the excitation, the voltage rose automatically to 11 KV, which was not desired. Kindly guide us where might the problem be for rectification purpose.
We have recently replaced 11KV XLPE cable of Alternator (from alternator to 11KV GCB) of one of our Gas Turbine (Fr 5, GE make, 20 MW).
After replacement of the HT cable when we first started the GT, we wanted to raise the voltage manually step by step so that voltage would build up gradually and hence put the DAVR (Brush make) in manual mode.
But the moment we switched ON the excitation, the voltage rose automatically to 11 KV, which was not desired. Kindly guide us where might the problem be for rectification purpose.