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coolyaar
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Join Date: Jul 2011
Posts: 286
Good Answers: 1

Setting Of Negative Sequence Protection

08/06/2011 6:25 PM

hi,

i want to know that what should be the %age setting of the negative sequence value for a given equipment i.e. motor, generator e.t.c. kindly give a refrence e.g IEC,IEEE etc for your statement so that i may use that reference in my documentation.also i want to know that if my line voltages are unbalanced by say 6% , then by how much %age will my line currents be unbalanced.kindly give a formula for this .
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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: setting of negative sequence protection

08/06/2011 9:15 PM

Kindly Google on your thread's title and enjoy going through the 17,100,000 documents that are found in 0.20 seconds. After a thorough review we will answer specific questions.

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TonyS
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United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 181
#2

Re: setting of negative sequence protection

08/07/2011 3:45 AM

Coolyaar, haven't you got it yet? We won't do your homework.

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soebfatehi
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Join Date: Jun 2009
Posts: 223
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#3
In reply to #2

Re: setting of negative sequence protection

08/08/2011 12:11 AM

TonyS . . . or for that matter earn a wage for you to collect . . .
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raghunath7
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Join Date: Apr 2011
Location: Bengaluru, India
Posts: 128
Good Answers: 3
#4

Re: Setting Of Negative Sequence Protection

08/08/2011 2:59 AM

set it below I**2t= K characteristic of the equipment provided by the manufacturer.

or simply below negative sequence thermal with stand characteristics provided by the equipment supplier.

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