Generator stator ground fault

Phenomenon:(l) the insulation of the generator stator grounding and relevant supervisory devices are the police (2) the insulation monitoring device alarm,one phase voltage is reduced,the other two

phase voltage rise.2.2.5.2 Processing:(l) measure the insulation of the generator of the zero

sequence voltage and relevant supervisory device (2) check the PT primary fuse,such as fuse,should be replaced (3) isolated from generators,PT and the electrical connection part,narrowing the scope of

the fault.Check three phase generator the generator in detail a loop,Such as pick up location inside the generators,unloading stop immediately,wholesalemotor.blogspot.com if you are on the

outside of the generator,should also be quick Find out the reason and eliminate it.In front of the grounding and eliminate cause,allowing the generator short running,but No more than half an hour.If appear in the process of generator starting motor fan booster ground signal,should immediately check protection Screen,such as harmonic caused three times and other instructions is normal,can continue to step up,if fundamental grounding caused,Should immediately step-down,check,until find out why.