Why does the induction melting furnace have a trip failure?

When the induction melting furnace is turned on, it will automatically trip. That is, when the induction melting furnace is turned on, when the intermediate frequency start switch is turned on, the main circuit switch will perform a protective trip or overcurrent protection.

Failure reason analysis:

When the circuit of the current regulator fails, especially when the current transformer is damaged or the connection line is broken, the induction melting furnace starts without current feedback suppression, so that the DC voltage will directly reach the highest value, and the DC current will directly reach the maximum value. , Cause the electric furnace to activate over-current protection or make the main circuit switch protectively trip. In addition, it may be that the power adjustment knob of the induction melting furnace is placed at the highest point. In addition to quenching load, other load equipment must be placed at the minimum position when starting, if it is not at the minimum position, it will cause overcurrent protection or make the main circuit switch protective due to the excessive current impact Of tripping.

Ways to solve the problem:

Check whether the current transformer has been damaged; whether there is an open circuit in the wiring between the current transformer and the circuit board; whether there is any damage or open circuit in the current regulator part.