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yk
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Join Date: Jun 2011
Location: india/gujrat/Bhuj/atps
Posts: 30

Generator Rotor Resistance

11/01/2013 2:30 AM

hello sirs

anyone can give me some guidance about generator rotor resistance.we have ansaldo energia 170Mva generator.its rotor resistance value at 95°c is 0.2°Ohm(200mohm) as per data sheet.but during resistance measuring we get it only 2.31mohm with digital low resistance ohm meter(Magger make).

so please give me some hint how I get proper value. why I get only 2.31m ohm inspite of 200m ohm.

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peterjh
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Join Date: Feb 2013
Location: Australia
Posts: 26
Good Answers: 2
#1

Re: Generator Rotor Resistance

11/24/2013 1:50 AM

First thing I would like to clarify, I am presuming that you have requested the information from the manufacturer of your machine, and they have provided the correct information.

If the information is correct, then I would suggest that there possibly could be 2 short circuits on the insulation of the rotor windings.

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