Induction furnace is a kind of power supply device that converts the power frequency of 50 Hz AC to intermediate frequency (300 Hz to 10000 Hz). It converts the three-phase power frequency AC into DC after rectification, and then converts the DC into adjustable intermediate frequency current to supply the intermediate frequency AC current flowing through the capacitor and induction coil. It generates high-density magnetic lines in the induction coil and cuts the metal materials in the induction coil It can produce large eddy current in metal materials.

1、 Fault phenomenon: when the equipment is running, the DC voltage and intermediate frequency voltage have reached the rated value, but the DC current is small and the power is low.

Analysis: this phenomenon is just opposite to 1) fault phenomenon, which is caused by high load impedance

1. The compensation amount of load compensation capacitor is insufficient

2. The contact resistance of the connection node of the channel is too large, and the dust shall be removed

2、 Induction furnace fault phenomenon: when the equipment is running, the DC current has reached the rated value, but the DC voltage and medium frequency voltage are low.

Analysis: this phenomenon is not caused by medium frequency power failure, but by low load impedance

1. The series capacitor is damaged

2. The inductor has inter turn short circuit

Yiphee Electric Furnace Co.,Ltd specializes in producing induction smelting furnace.Tel(WhatsApp):+86-13450756789, yiphee@yiphee.cn