An individual droop CT's should be allowed to feed back to the AVR's. These CT's are short circuited or bypassed through relay contacts during single or isochronous operation.
I may say you have two faults to locate. first is that you have a thermally controlled cooling fan on the server unit that could be dried out of lubrication on its bearing or shaft bushing.this is causing a heavy draw of current when its called to run. second is that you have a loose connection...
You may configure your emergency stop to control both a contactor installed at the input and output of the VFD.This is to insure that the VFD and the motor are totally isolated from power.The VFD is normally run with load or load shall be connected first before command to the VFD to ramp is...
Base load operation of a generating station is sopposed to be a kind of operation with a fix number of a power generators in parallel carrying a load less than their capacity.Or a single generator is operating at a load lower to its capacity and that the load never exceeds the generator capacity.
