Siemens APT relay - the cause and solution of the fault of the high-voltage relay

Create Date: 2024-8-30 12:03:23|Source: APT/Siemens Shanghai Ergong

1. Some common faults of high-voltage relay coils

1. The common fault cause of the coil is often disconnected: whether the ultrasonic wave is used to clean the high-voltage relay, or whether the overvoltage is added to the coil will also promote the probability of the coil being disconnected.

2. The common fault reasons for the lack of power engineering in the coil are: first of all, the working voltage of the high-voltage relay coil must be determined, and it is assumed that the working voltage of the power supply system to the coil is lower than the posture working voltage, which will cause the contact to be out of posture.

3. Common fault causes of coil optical rotation connection: check whether the diode equipped with the high voltage relay is equipped with optical rotation error, which will make the contact not operate.

4. Appear coil communication AC with; The DC DC power supply system is incorrect, and common fault reasons: if the AC voltage is added to the high-voltage relay coil of the AC coil, then there will be a hot coil, which is very likely to cause ablation, and if the AC current is added to the high-voltage relay coil of the DC coil, it will make the moving iron sheet vibrate continuously and then cannot work normally.

5. If a part of the coil is connected to the power supply for a long time, it will lead to the hot coil and the malignant transformation of the insulation layer, which will promote the common fault of the high-voltage relay posture.

Second, some common fault solutions for high-voltage relay coils

1. A simpler and better way is to disassemble and replace the high-voltage relay again.

2. There is also to determine the working voltage of the coil to prevent the working voltage supplied by the coil from being less than the working voltage.

Siemens APT relay - the cause and solution of the fault of the high-voltage relay

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