The thin film of sticky oil might have attracted dust particles over the slip ring, which might increase brush friction. Increse in brush friction will increse the brush wear rate. The temperature increase might be due to the following,
1. The thin film of the oil between the brush and slip ring...
An ungrounded generator neutral will shift depending on the harmonic content of the generator. Based on this neutral the continuous current rating of the Grounding resister is designed. hence if there is no fault in your system as discussed above you may check your neutral grounding resister.
tyboy,
You have mentioned that you face reverse power problem when you synchronise A & C, do you face the same problem when you synchronise A & B and A with other two generators running i.e B & C. What is the revese power setting in KW and trip time of the generators. Immediately after...
