What kinds of decision are made about CT from it's Knee
point(voltage & current)?
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Answer Posted / raj
For Protection CTs knee point voltage is always high than
Metering CTs to avoid saturation of CTs during fault
current.But to increase the knee voltage core size should
be increase which is practically possible or economical so
another method to reduce the burden on CTs by using
secondary ratio 1A inplace of 5A.
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