After the electrical equipment to be repaired is out of power, an electrical test must be carried out. The electroscope must meet the voltage level, and the high-voltage part must wear insulating gloves. After confirming that there is no electricity, lay the grounding wire and hold the infrared insulating rod to discharge to the ground.
After the circuit breaker trips, whether we plan to perform repairs or try to close, we must know the cause of the last trip to narrow the scope of the suspected fault. Circuit breakers have two major protection functions-overload (short-circuit is a special form of overload) protection and leakage protection. So how can we know whether the circuit breaker tripped due to overload or leakage? In fact, by observing the circuit breaker after tripping, it can be recognized at a glance.
In some power plants and power transmission places, you can see dry-type transformers. In the process of power transmission, electric energy can be converted into high-voltage current form, which can reduce the loss of belt energy during the transmission process and achieve good savings.