Maintenance Suggestions For Low-voltage Pole-mounted Circuit Breakers

During the configuration and wiring phase, the insulation resistance and grounding status of the primary circuit should be carefully checked in accordance with the equipment specifications to ensure that the breaking capacity and short-circuit breaking capacity of the Lv Pole Mounted Circuit Breakers are within the design range. The safety clearance design between the wiring and the busbar support must be carried out in accordance with the standard to prevent the risk of poor insulation or leakage caused by adjacent grounding parts or metal components being too close.

During the operation and maintenance phase, the operating procedures must follow a complete work flow sheet, with each step executed sequentially, clearly defining personnel responsibilities and equipment status. Disorganized operating sequences or skipping confirmation steps can lead to misoperation, electric shock, or damage to the circuit breaker itself. Before maintenance, insulation, grounding, and load imbalance tests should be performed on the busbars and circuits. Low-voltage pole-mounted circuit breakers sometimes bear unbalanced loads and must be able to operate safely under these conditions.