Operation and maintenance of Power Current Transformer and voltage transformer

1. The operation of Power Current Transformer and voltage transformer

The operation of the Power 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 the Power Current Transformer must ensure the rated current, such as the secondary side of 5A, long-term overwork 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 Power Current Transformer and Voltage Transformer

During the operation of the Power Current Transformer, whether there is a discharge phenomenon, if so, it may be a part of the damage, which needs 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 odor; the three-phase indication value of the instrument Whether it 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. Once these problems occur, personnel must be organized for maintenance. Regardless of placement, it will cause more serious damage to the circuit, and even explosion accidents may occur, which will threaten the lives of personnel and cause huge losses to the enterprise.