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what is the CT of protection and CT of metering ? what is
class 5P10 & 5P20 and class PS ?
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Answer Posted / arunmozhi
there are two type of ct in field,
1,protection CT
2,metering CT
protection CT; only for protect the equipment used to
relay based.
metering CT : this is only for showing the current in
ammeter .
In different type of class in CT 5p10,5p20 And ps it is
used for protection purpose only ,
5-acurancy class.
p- protection
10-10% error.
20-20% error.
ps class:it is calculate to the knee point voltage.
| Is This Answer Correct ? | 20 Yes | 74 No |
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