Motor Problem
Motor Problem
(OP)
I have Siemens make 150hp (164FLA), 460V motor (IEEE-841, premium efficiency) is causing main HMCP to trip on start-up. PdMA results shows all OK (PI-10; DDA-1.9; Average Phase resistance & inductance 0.0635ohm, 2.008mH)
Inst. Breaker set at 13*FLA. No problem with cable or starter.
Is motor resistance too low (0.0635ohm) or look for other parameter?
Inst. Breaker set at 13*FLA. No problem with cable or starter.
Is motor resistance too low (0.0635ohm) or look for other parameter?





RE: Motor Problem
Premium efficiency, hmmm. You can go higher than 1300% for that one.
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RE: Motor Problem
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RE: Motor Problem
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RE: Motor Problem
Instantaneous trip at breaker is already set to maximum, cannot go above what code allows.
RE: Motor Problem
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RE: Motor Problem
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RE: Motor Problem
Also please help me under stand why high efficiency motors will have high inrush as compared to normal motor. My thoughts were other way around.
RE: Motor Problem
htt
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RE: Motor Problem
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RE: Motor Problem
JatTiw - What is the load ? I'm wondering if a starting resistor in series with the stator for the first few cycles of the start woll solve this problem.
Muthu
www.edison.co.in
RE: Motor Problem
Electricpete & Edison123 thanks your support & shedding light on the issue.
Best Regards
RE: Motor Problem
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RE: Motor Problem
RE: Motor Problem
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