Problems that should be paid attention to in the operation of Electrical Current Transformer

1. The secondary side of the Electrical Current Transformer must not be opened during operation. Once the secondary side is opened, it will burn out due to excessive iron loss and high temperature, or the secondary winding voltage will rise and the insulation will be broken down, resulting in high-voltage electric shock. Danger. Therefore, when replacing the meter, such as exchanging the ammeter, active meter, reactive meter, etc., the current loop should be short-circuited first and then the metering meter should be exchanged. When the meter is adjusted, first connect it to the secondary circuit, then remove the shorting wire and check whether the meter is normal.

2. If the Electrical Current Transformer has a humming sound, check whether the inner iron core is loose, and tighten the iron core bolts.

3. At one end of the secondary side of the Electrical Current Transformer, the shell must be grounded reliably.

4. When the insulation resistance of the secondary coil of the Electrical Current Transformer is lower than 10-20 megohms, it must be dried to restore the insulation before it can be used.