When replacing the meter at the incoming line, connecting the new meter causes one of the outgoing circuits to trip
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At our factory, we are replacing the electricity meters for the I and II feeders in this substation. While removing the old meters and installing new ones, the meter for the I feeder tripped suddenly when the voltage line was connected, with a circuit number of 3647. The cause has not yet been identified; please help analyze what might have happened. It worked fine when using the old electricity meter
The comprehensive protection system of circuit 3647 indicates a low voltage trip