Switchgear Testing and Commissioning Requirements
This blog covers testing and commissioning procedures for all the segments of medium voltage switchgear like a circuit breaker, disconnect and grounding switches, instrument transformers (current/voltage), etc. Set an objective To test the physical condition and proper connections of the bus bar What is Test Equipment Required? Insulation test (Megger) Micro ohmmeter High voltage tester Torque wrench What is the Test Procedure? 1. Mechanical Checks and Visual Inspection: Inspect switchgear and all segments for any physical damage/faults. Check nameplate data for accuracy. Inspect enclosures for foundation fixing, precise alignment, and grounding and vermin entry. Inspect all caps, panels’ section and doors for paintwork and proper fit. Check all the transport locks are excluded. Check for uniform and proper movement of racking mechanisms, rollers, shutter, rails and guides. Check proper alignment of the primary and secondary contacts. Check operation of all mechanical interlocks...