Low-voltage Pole-mounted Circuit Breakers Should Undergo Relevant Tests Before Installation.

Before the Lv Pole Mounted Circuit Breakers is put into on-site assembly, relevant technicians need to perform a series of standardized preliminary testing activities to confirm that the equipment can exhibit the correct performance status under actual operating conditions.

Insulation resistance tests are conducted on the low-voltage pole-mounted circuit breakers, mainly using megohmmeters or similar instruments to measure the insulation condition between each phase and to ground. The readings are recorded for comparison with the equipment's technical documents. Contact resistance testing focuses on the consistency of resistance values ​​at each contact and the condition of the contact surfaces, which is of practical significance for arc extinction and the stability of the conductive path.