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vishnuelectrical
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Join Date: Oct 2013
Posts: 5

Negative Sequence Current Recognition Factor Ke

11/17/2013 10:58 PM

hi, can any one help me in understanding the negative sequence current recognition factor, Ke, in a motor?
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RAMConsult
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Engineering Fields - Power Engineering - New Member

Join Date: May 2007
Location: NYC metropolitan area.
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Good Answers: 444
#1

Re: Negative Sequence Current Recognition Factor Ke

11/18/2013 10:12 AM

Yes, the manufacturer of the microprocessor relay that you're trying to set can. Ke is a term that they use, it's the ratio of starting current to normal rated full load current, Ist/Ir. Schneider Electric is your best source for more information, please post their response to your inquiry so others can learn from your efforts.

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electricalexpert65
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Join Date: Oct 2009
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#2

Re: Negative Sequence Current Recognition Factor Ke

11/19/2013 9:59 AM

Dear Vishnu, please send me your mail ID thro this forum's mailbox; I shall send you the detailed derivation of the negative sequence factor - which I had worked out when I was a trainer with L & T - for my training session on motor protection.
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ramvinod
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#3
In reply to #2

Re: Negative Sequence Current Recognition Factor Ke

11/19/2013 6:00 PM

Dear sir

I would like to have the detailed calculation.

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vishnuelectrical
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Join Date: Oct 2013
Posts: 5
#4
In reply to #2

Re: Negative Sequence Current Recognition Factor Ke

11/25/2013 11:00 AM

Dear electricalexpert65, i have sent it.
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