The intermediate frequency furnace often burns the inverter tube during use, mainly due to the loss of control caused by high current and high voltage.
　　1) High voltage out of control: When the intermediate frequency voltage rises to a certain value, the inverter overturns and cannot operate under high impedance conditions. The withstand voltage of components decreases or the cooling effect is poor, the insulation performance of the system decreases, and the machine short circuits to ground when the intermediate frequency voltage rises. Check the intermediate frequency capacitor and furnace. Interference may also cause it, and the inverter trigger line should be further away from the main circuit.
　　2) The high current is out of control, the reverse voltage angle of the intermediate frequency voltage is too small, whether there is poor contact in the triggering circuit, and also pay attention to the consistency of the turn off time.
　　3) The frequency of the inverter thyristor cannot be ignored Dongguan Chashan Runyuan Medium Frequency Electric Furnace Factory
　　Now that the quality of the components has passed the standard, if the process is good, the reliability is already very high. The inverter thyristor of the chiller unit is relatively weak. If it is frequently damaged, there must be a reason. Special attention should be paid to checking: - Dongguan Chashan Runyuan Medium Frequency Electric Furnace Factory 1) Resistance capacitance absorption circuit of the inverter tube, with a focus on checking whether the absorption capacitor is open circuited. At this point, a digital multimeter capable of measuring capacitance should be used to detect the capacitor, and simply measuring its on/off state is not enough. If the inverter absorption circuit is disconnected and the inverter tube is easily damaged; 2) Check whether the electrical parameters of the pipe meet the requirements and do not use components that have been imported from unqualified manufacturers Dongguan Chashan Runyuan Medium Frequency Electric Furnace Factory 3) Whether the water jacket and other cooling water circuits of the inverter tube are blocked, although this situation is rare, it has indeed occurred and is easy to ignore. 4) Pay attention to whether the load ignites the ground, as this can result in sudden high voltage and cause breakdown and damage to the inverter tube. 5) Excessive or insufficient operating angle can cause frequent overcurrent in the inverter tube, resulting in damage to the tube and potential long-term damage. 6) Appropriately increasing the inductance of the intermediate frequency circuit wiring from the intermediate frequency power supply to the furnace body without affecting startup can alleviate damage caused by excessive di/dt on the inverter tube.
　　Dongguan Chashan Runyuan Medium Frequency Electric Furnace Factory's main products include stainless steel melting medium frequency furnaces, copper melting medium frequency electric furnaces, medium frequency harmonic filters, forging through medium frequency electric furnaces, iron melting medium frequency furnaces, steel melting medium frequency furnaces, and aluminum melting medium frequency furnaces. Welcome all merchants to call our factory to discuss cooperation.