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Anonymous Poster #1

CT Reversed

07/09/2011 2:25 PM

What will happen if the polarity of a CT is reversed in one phase by mistake while replacing the same that meant for protection of a power transformer( say 33/3.3KV,4MVA) ?
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TonyS
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#1

Re: CT Reversed

07/10/2011 4:31 AM

Try it and find out.

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kvsridhar
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#2

Re: CT Reversed

07/10/2011 7:29 AM

Most likely the protection will malfunction. However, please download and study this paper : http://www.gedigitalenergy.com/multilin/notes/artsci/art07.pdf

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cqbluejay
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#3

Re: CT Reversed

07/12/2011 12:22 AM

you can reversed the S1,S2,or P1,P2.

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SaurabhKS
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#4

Re: CT Reversed

07/12/2011 12:42 AM

When only P1 P2 is reversed, breaker will trip on instanteneous earth fault.
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Previous in Forum: Again Relating to Current Different Way   Next in Forum: For a Ray Transformer of 400 KV, What is the Specification of the Oil?

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