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vinodk
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Join Date: Mar 2008
Posts: 25

transformers

06/30/2008 2:15 AM

hi,

any guidelines in selecting the CT rating to be used for winding temperature indicators used in transformers
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Anonymous Poster
#1

Re: transformers

07/02/2008 4:20 AM

pRIMARY CURRENT SHULD BE EQUAL TO RATED CURRENT & SECONDARY MAY BE 1.75 Amp OR 5 aMP AS PER THE WTI. CLASS 3 & VA 10/5 IS OK.
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vinodk
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Join Date: Mar 2008
Posts: 25
#2
In reply to #1

Re: transformers

07/02/2008 5:23 AM

thanks for the reply. our transformer rated current(LV) is 629 Amps we have specified 630/5A CT with 20VA class 1 is this OK or can lesser VA rating be used.
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