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Hello,
We have Frame 9E-Mark Vie system GT with Natural gas & Syngas fired. At present we don't have syngas, so GT running on NG. When turbine is running, servo currents for R, S, T coils found to be -2 to -3 % ma (ideally should be -2.67%) which is understood. but when GT was in turning gear (110 RPM), servo current across VSR-1(NG) found to be 80% on EGD page & 8.8 ma in marshalling. In VSRVSR-11 (Syngas SRV) it was 100% in EGD & 10.98 ma in marshaling. Please help me to understand this, as i can't understand why the servo current value, when valves are closed, are 100% & 80%.
Best Regards,
Yasin.
We have Frame 9E-Mark Vie system GT with Natural gas & Syngas fired. At present we don't have syngas, so GT running on NG. When turbine is running, servo currents for R, S, T coils found to be -2 to -3 % ma (ideally should be -2.67%) which is understood. but when GT was in turning gear (110 RPM), servo current across VSR-1(NG) found to be 80% on EGD page & 8.8 ma in marshalling. In VSRVSR-11 (Syngas SRV) it was 100% in EGD & 10.98 ma in marshaling. Please help me to understand this, as i can't understand why the servo current value, when valves are closed, are 100% & 80%.
Best Regards,
Yasin.