Why CT's shall not be kept open?
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Answer Posted / abhishek goyal
CT always connecting into the series position. If we have
some work on the Meter, we need to short the CT terminal. If
CT in open condition (it can't connected to the meter)its
step down the current in terms of 300/5AMP (for example).
After few second or minute it will drawn the more current at
infinite level at that time CT temperature also increase. If
we can't short the CT it will make big blast or sever
damage.
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