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It has been ten years since the box substation was made by another manufacturer. It happens that we have a project to cooperate with PetroChina, so I stopped by to see and help solve the problem. The customer described the problem as the low-voltage neutral line is live, and one of the three-phase ABC phases is missing. , The electric opening of the high voltage switch fails.
On-site inspection, the customer’s high-voltage switch is a load switch, the switch can be closed manually, and the electric switch fails. Open the wiring room to check, it is really horrible, the inside is regarded as a home by snakes, a lot of grass, maybe it is winter here It’s warmer, there are snake corpses on the switches.
The wires inside have been bitten off, and no one may have checked it for a long time.
In the end, there is only a simple maintenance, just connect the wires barely, the switch opening electromagnet has not been used for a long time, it has been rusted, and the self-resetting is no longer possible.
On the way back, I met a female driver who hit the guardrail on the highway, and it seemed quite fierce.
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