how can we calculate ct ratings ?its any formula ?

Answer Posted / manohar

we calculate ct rating not by turns ratio factors considered
are application & va required. You need 5A OR 1A secondary
of ct. Generally we use in ht side 1A CT's & 5A CT'S IN LT SIDE.
Application means Metering or ProtectionIf you dont know
please read the name plate of CT's

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