Mass failure of electricity meters
My clients lost 2 three-phase and one modular single-phase meters in a cafe, stable and bathhouse when I was on shift and could not come. All are powered from one switch. Before the failure, a quiet whistle was heard. Electrical appliances, thank God, were not affected. Previously, there was a case of applying an underestimated three-phase voltage of the order of 300 from a transformer substation. One of the consequences is a low voltage on one phase in the stable, this is fixable, the contact on the support apparently worsened. I suspect that the matter is low-quality electricity, but what exactly happened is not possible to determine. Energy naturally shut off. What could it be?
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Hello! Rather, a high voltage surge or phase imbalance. It is necessary to check the input wires, if they are through the air - maybe there was a strong wind? If possible, measure the voltage at the support, or at least with the load off at the input to the object.
Energetics certainly hide. It seems to be like substations should have meters for power surges and power failures - you can dig in this direction. The organization on whose balance sheet this TP is obliged to provide a certificate stating that there were jumps if something went wrong.