In protection core of a C.T. why Knee pont voltage is greater than SLV and in m

In protection core of a C.T. why Knee pont voltage is
greater than SLV and in metering its viceversa?

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In protection core of a C.T. why Knee pont voltage is greater than SLV and in metering its vicevers..

Answer / khaleel

the main protection core especially ps class and backup
cores have higher saturation point that metering
core.....becoz they hav to handle large fault current..that
occur in faults..so its knee point will be about 600v..

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In protection core of a C.T. why Knee pont voltage is greater than SLV and in metering its vicevers..

Answer / nur.asidik

knee point voltage should higher than required Vkp by relay to avoid CT saturated when fault happen

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