Cómo lidiar con la sobrecorriente de equipo de calentamiento por inducción de alta frecuencia?

The reasons for the overcurrent of high-frequency heating equipment are:

1. The self-made induction coil has incorrect shape and size, the distance between the workpiece and the induction coil is too small, there is a short circuit between the workpiece and the induction coil or the induction coil itself, and the prepared induction coil is affected by the customer’s metal fixture during use or The influence of nearby metal objects, etc.

Enfoque:

1. Re-make the induction coil. The coupling gap between the induction coil and the heating part should be 1-3mm (when the heating area is small), and the induction coil should be wound with a round copper tube or square copper tube with a thickness of 1-1.5mm and above φ5;

2. Compruebe si la potencia de calefacción coincide con la del protector. Si la coincidencia es correcta, compruebe si el funcionamiento es correcto, principalmente el tiempo de calentamiento;

3. When materials with poor magnetic permeability such as copper and aluminum are inductively heated, the number of induction coils should be increased;

4. El equipo debe evitar la luz solar, la lluvia, la humedad, etc .;

5. Cambie a un interruptor protector más grande, siempre que el sistema de calefacción sea normal.

Dos, sobrecorriente de arranque

1. Desglose de IGBT

2. Fallo en la placa del controlador

3. Causado por el equilibrio de pequeños anillos magnéticos.

4. La placa de circuito está mojada.

5. La fuente de alimentación de la placa de transmisión es anormal

6. Cortocircuito del sensor

Enfoque:

1. Replace the driver board and IGBT, remove the small magnetic ring from the lead, check the waterway, whether the water box is blocked, blow the board used with a hair dryer, and measure the voltage;

2. Sobrecorriente después de usar durante un período de tiempo después del arranque: la razón es generalmente una mala disipación de calor del controlador. Método de tratamiento: vuelva a aplicar grasa de silicona; compruebe si la vía fluvial está bloqueada.

Tres, aumento de potencia sobre la corriente

1. Transformador de encendido

2. The sensor does not match

3. Fallo en la placa del controlador

Enfoque:

1. The inside of the machine and the induction coil must be cooled by water, and the water source must be clean, so as not to block the cooling pipe and cause the machine to overheat and damage. The temperature of the cooling water should not be too high, it should be lower than 45℃;

2. Do not use waterproof raw material tape when installing the induction coil to avoid bad electrical connection. Do not change the induction coil soldering to brazing or silver welding;

3. There are many reasons for the influence of the number of turns of the induction coil on the current, and it can also cause overcurrent.