Medium frequency furnace is a kind of equipment used for casting, forging and hot processing. It is composed of frequency conversion device, furnace body and furnace front control.

The startup equipment cannot start normally

Fault phenomenon: the equipment cannot be started. When starting, only the DC ammeter has indication, and there is no indication of DC voltage and intermediate frequency voltage.

The main differences between power frequency furnace and medium frequency induction furnace are as follows

Crucible of medium frequency furnace and refractory mastic lining

affected by furnace lining refractory, furnace drying process and service process, which are introduced below.

According to different magnetism, all metals and alloys can be divided into two categories:

Fault phenomenon: the equipment operates normally and the DC current indication is high. If the current is set at the rated value, the voltage is too low, and the indicated value of the power meter is inconsistent with the product of DC voltage and DC current, which was consistent before.

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.

Fault phenomenon: when the equipment is running, the DC current has reached the rated value, but the DC voltage and intermediate frequency voltage are low. Observe the intermediate frequency voltage waveform with an oscilloscope. The waveform is normal and the front angle of the inverter is also normal.

Fault phenomenon: there is no response when the equipment is started. After observation, the phase loss indicator on the control circuit board is on.

When current flows through a conductor, a magnetic field is formed around the conductor. When the conductor flows through alternating current, that is, the value and direction of current change periodically, the magnetic field also changes with it.