What are the precautions during the operation of Power Current Transformer

The secondary side of the Power Current Transformer must not be open during operation. Once the secondary side is open, it will burn out due to excessive iron loss and high temperature, or the voltage of the secondary winding will increase and the insulation will break down, resulting in the risk of high-voltage electric shock. Therefore, when changing meters, such as interchange of ammeters, active meters, and reactive meters, the current loop should be short-circuited before the metering meter interchange should be stopped. When the meter is adjusted, first connect it to the secondary circuit and then remove the short wiring and check whether the meter is normal. If sparks are found when the short wiring is removed, the Power Current Transformer has been opened at this time, and it should be re-shorted immediately, and the short wiring can be removed only when it is found that there is no open circuit in the meter circuit. When you stop removing the short circuit of the Power Current Transformer, you should stand on the insulating pad. In addition, you should consider disabling the maintenance and installation of the Power Current Transformer circuit. After the work is completed, the maintenance and installation can be put into operation.

When the insulation resistance of the secondary side coil of the Power Current Transformer is lower than 10-20 megohms, the drying process must be stopped to restore the insulation before it can be used.

One end of the secondary side of the Power Current Transformer, the shell must be firmly grounded.

If there is a buzzing noise in the Power Current Transformer, check whether the internal dead center can be loosened, and tighten the dead center bolt.