Medium Frequency Furnace Frequency Conversion Electromagnetic
Induction Medium Frequency Furnace
Working principle of intermediate frequency furnace:
The medium frequency furnace is mainly composed of a power supply,
an induction ring and a crucible made of refractory materials in
the induction ring. The crucible is filled with metal charge, which
is equivalent to the auxiliary winding of the transformer. When the
induction coil is connected to the AC power supply, an alternating
magnetic field is generated in the induction coil. The magnetic
field lines cut the metal charge in the crucible, and the induction
electromotive force is generated in the charge. Since the charge
itself forms a closed circuit, the auxiliary winding is
characterized by only one turn and is closed. Therefore, induction
current is generated in the charge at the same time. When the
induction current passes through the charge, the charge will be
heated to make it melt.
Technical parameters of intermediate frequency furnace
Model: LC-ZP-500
Power supply: three-phase four wire 380V 50-60Hz
Input power: 500KW
If range: 3khz
Load rate: 100%
Input power: 500A
Boundary dimension:790 * 1000 * 1550mm
Operating rules of intermediate frequency furnace:
1. Before starting the machine, check whether the equipment body is
in good condition and whether there is any circuit short circuit or
safety hazard caused by the presence of foreign matters; Start the
water circulation system and check whether the water channels such
as the medium frequency power supply, the medium frequency furnace
body and the compensation capacitor cabinet are smooth and whether
there is water leakage. If it exists, first eliminate the potential
problems of the equipment to avoid the expansion of the fault.
2. Check whether the three-phase incoming power supply of
intermediate frequency power supply is normal.
3. Check whether the connection between the power distribution
cabinet and the induction furnace is intact. The exposed part of
the induction ring should not be attached to metal objects to
prevent the induction ring from being damaged by fire.
4. Under the condition that all the above are intact, the control
power can be sent to the door panel.
5. Turn the power adjustment potentiometer on the door panel
counterclockwise to "0" minimum.
6. Press the start button of the main circuit switch to close the
circuit breaker and connect the main circuit.
7. Turn on the if start button.
8. Amplify the power setting potentiometer on the door panel
clockwise bit by bit until the heating process requirements.
9. Purpose of fault display lamps on control circuit board
