What are the manifestations of a damaged rectifier bridge?
Jul 21,2025
After the rectifier bridge is damaged, the entire circuit will be unable to function, unable to rectify, and there will be no DC input in the circuit. If the diode is broken down, it may cause a short circuit.
The function of a rectifier bridge is to convert alternating current into direct current.
Damage and causes of rectifier bridge module:
The damage to the rectifier module is usually caused by grid voltage or internal short circuit. After ruling out the internal short circuit, replace the rectifier bridge.
Inverter module damage is usually caused by motor or cable damage and drive circuit failure.
No display when powered on, usually caused by damage to the switch power supply or soft charging circuit, resulting in no DC power in the DC circuit
Displaying overvoltage or undervoltage is usually caused by input phase loss, circuit aging, and circuit board moisture.
Overcurrent or ground short circuit display is usually caused by damage to the current detection circuit. Such as Hall elements, operational amplifier circuits, etc.
The power supply and driver board display overcurrent during startup. Usually caused by damage to the drive circuit or inverter module.
The no-load output voltage is normal, but it displays overload or overcurrent after being loaded. Usually, the overcurrent protection function is caused by improper parameter settings or aging of the drive circuit, as well as module damage.
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