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What is ZCT? it operating principle and how is work with
RCCB (residual current circuit breaker)?

Answer Posted / bhoot

ZCT is a neutral CT which is based on zero sequence current
detection. What happens during leakage, the current in the
phases are not the same & hence the in is not equal to
zero. This difference of current flows into the neutral CT
whicgh trips the RCC

Is This Answer Correct ?    14 Yes 4 No



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