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Electrical Test Riddle No.6 - Generator rotor resistance
we have 170MVA ansaldo make generator which rotor resistance is 0.2 Ohm as per data sheet .but recently when we measured it shown 2.30 mOhms.what is the problem.please guide me thanks
Author : Unknown
Sat, November 2nd, 2013 - 08:16
I checked typical value for 200 MVA generator, 0.2 ohm is an expected value for mentioned rating. It seems you should recheck the rotor wiring diagram and measuring devices. 
Author : Hamid - From: Iran
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