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how netral CT is selected (including its details
specification)
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Answer Posted / abobakkar
NCT selected by based on rating of
transformer
Netural CT - Netural current Transformer it can used in
transformer side only
it purpose when a current comes reverse through netural
side means it should sense by current transformer only.
then CT secondary can be connected to relay (ie.,)Earth
Fault Relay. when a current is high means it will sense
then coil will enegrised and gave trip command to breaker.
it is one of the protection of transformer from fault.
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