The First 5 Things to Check After a Transformer Has Been Idle for Months
Idle equipment gathers more than just dust. It absorbs moisture, loses calibration, and may shift ever so slightly just from thermal cycles or air movement.
A transformer that’s been sitting disconnected for months won't behave the same as one in regular service.
Powering it up without checks could lead to false trips. Or worse, silent degradation.
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