Operation and maintenance of Electrical Current Transformer and voltage transformer

1. Operation of Electrical Current Transformer and Voltage Transformer

The operation of Electrical Current Transformer changes the current amplitude by changing the number of turns of the primary and secondary coils. This is based on the principle of electromagnetic induction and the operation of Lenz's law. The work of Electrical Current Transformer must ensure the rated current. For example, the secondary side is 5A. Excessive work for a long time will cause large errors. The meter cannot display accurate data, and may cause insulation aging and burn out the internal windings. The operation of the voltage transformer is allowed to work in excess, but it cannot exceed 10% of the rated value. Its function is to use the principle of electromagnetic induction to change the voltage amplitude. Since the secondary side is not allowed to short-circuit, the voltage transformer is also called instrument Use a transformer.

2. Maintenance of Electrical Current Transformer and Voltage Transformer

The maintenance of Electrical Current Transformer needs to pay attention to: Whether there is discharge phenomenon during the operation of Electrical Current Transformer, if there is, a certain part may be damaged and need to be repaired in time; check the temperature of the joint to prevent the temperature from being too high; whether there is abnormal noise Or peculiar smell; whether the three-phase indication value of the meter exceeds the rated value. The maintenance of voltage transformer needs to pay attention to: check whether there is damage to the outside of the transformer; whether there is abnormal noise; whether the cleanliness meets the standard.