Intermediate frequency power supply design and manufacturing standards

1. The induction melting furnace shall be equipped with a conductor intermediate frequency power supply device conforming to JB/T8669-1997. The power supply unit should be connected to the furnace

The sub-load circuit has a good match and should ensure the performance requirements of the furnace. The output power should be adjustable within the range of 10% to 100% to meet the different requirements of oven, melting and insulation. The operating frequency range should be The rated frequency corresponds.

The rated power of the IF power supply unit is +5% when the voltage of the oscillating circuit compensation capacitor bank does not exceed the rated value.

2, the intermediate frequency coreless induction furnace is equipped with a compensation capacitor cabinet. The power factor of the load circuit should be automatically adjustable and not lower than the specifications of its product standard. The compensation capacitor shall comply with the provisions of JB/T 7110-1993.

3. The intermediate frequency power supply unit of the induction melting furnace, except for the initial stage of melting of the cold furnace, the majority of the melting cycle should be operated at constant rated power; if necessary, the whole melting cycle can be operated at constant rated power. For high-capacity high-power furnaces, it is recommended to configure a computer process monitoring system to ensure operational reliability at high melt rates.

4. Intermediate frequency power supply devices with power greater than 500 kW should generally be equipped with a rectifier transformer. The type of rectifier should be beneficial to the reduction of harmonics in the power grid. If necessary, configure the harmonic absorption device on the primary side (primary side) of the rectifier transformer.

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