LV/MV Switchgear Testing and Commissioning
Electrical installation is only the first step toward a reliable power system. Proper testing and commissioning are essential to verify the operational integrity, electrical safety, and performance of low-voltage and medium-voltage switchgear before energization.
A systematic commissioning process should include insulation resistance testing, contact resistance measurement, circuit breaker timing analysis, mechanical and electrical interlock verification, protection relay testing, primary and secondary injection tests, CT/PT polarity verification, control circuit checks, and functional trip testing, as applicable to the equipment and project requirements.
These procedures help confirm personnel safety, equipment reliability, protection coordination, compliance with applicable IEC standards, manufacturer instructions, and project specifications. They also reduce the risk of premature equipment failure, unexpected outages, and operational hazards.
A disciplined testing and commissioning program is essential for dependable switchgear operation and long-term power system reliability.