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how to find out three phase motr kw with out name plate..

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how to find out three phase motr kw with out name plate....

Answer / pramod attri

1. according to size, and dia of shaft....and run with out
load check the ampire..this will be less then full load 70
%

Is This Answer Correct ?    1 Yes 1 No

how to find out three phase motr kw with out name plate....

Answer / sachin

you have to measure the distance btween shaft & its motor
foundation lavel & shaft dia,with that you come to know
the frame size & with that you come to know the size of
motor

Is This Answer Correct ?    1 Yes 6 No

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At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC 54A as per the nameplate. At the time of starting it draws 840A instead of 390A (7.2%). As per the data sheet also its 390A starting current. it thru a dol starter from the MCC. can anyone tell what is the problem in the motor

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