Common Issues And Troubleshooting with 3-Phase Power Supply for Wireless Communication Base Station Power Supply System

Three phase AC power supply for wireless communication base station power supply system, common issues  include:

1. Power phase loss: One or two phases of a three-phase power supply have a voltage of 0V, which may be due to a phase loss in the mains input or damage to switches, circuits, etc. It will cause equipment protection shutdown such as switch power supply and air conditioning.

2. Power phase error: The A, B, and C phase sequence of the power input is incorrect, usually occurring after maintenance in the mains or distribution room, which can also cause protection shutdown of equipment such as switching power supplies and air conditioners.

3. Zero line interruption: The characteristic is that the line voltage is normal, but the phase voltage is severely unbalanced, which can cause the equipment to work abnormally or even be damaged.

4. Air circuit breaker tripping: It may be caused by load or line short circuit, mismatch between air circuit breaker capacity and load current, or damage to the air circuit breaker itself.

5. Lightning arrester failure: Lightning arresters may be damaged after being struck by lightning or used for a long time, losing their lightning protection function, and even causing input to ground short circuits, resulting in input air circuit breaker tripping.