LV / HV Switchboard Checklist

  1. Check name plate, labelling, ID tags and warning signs correct to drawings/data sheets.
  2. Holding down arrangement correct and secure, as per project specification.
  3. Confirm no mechanical damage and door seals undamaged, doors open/close correctly.
  4. Earth bar and earthing correct and tight. Check earth path resistance. (_________________Ω)
  5. Bus bar alignment to vendor spec. and connecting links tight to specified torque and joints insulated.
  6. Phase identification correct.
  7. Instruments, ammeter and voltmeter scales and indication lamps correct.
  8. Confirm internal breaker/door mechanical interlocks correct.
  9. Heaters correctly installed.
  10. Confirm isolation locking mechanisms functional.
  11. Confirm busbar/circuit shutter padlocking operation correct.
  12. Check internals for cleanliness.
  13. Check manual operation of selector switch, MCB, push button, etc…
  14. Incoming cable condition and correct termination kit.
  15. Confirm spare cable entries are correctly sealed.
  16. All internal cabling and wiring neat, correct and undamaged.
  17. Environmental protection correct.
  18. CTs and VTs correct to drawing and undamaged, including externally mounted.
  19. Circuit breaker mechanical operation checked with breaker in “service, test and earth” position.
  20. Check pressure relief system undamaged and un-obstructed.
  21. Perform ductor tests across all bolted shipping joints and confirm parts are adequately protected.
  22. All racking tools, door and switch keys available.
  23. Confirm correct alignment and operation of circuit breaker lift truck with at least one circuit breaker.
  24. Confirm alignment and operation of incomer and bus section circuit breaker racking mechanisms.
  25. Confirm all cubicle doors are free from obstruction and earth bonded to the chassis.
  26. Confirm all covers/bolts are of correct type and fitted.
  27. Shutter operation, padlock facility and correct colour coding and warnings i.e. bus side shutter (coloured red with the word ‘Danger’), circuit side shutter (coloured yellow with the word ‘Caution’).
  28. Installation drawings have been “Red Lined” as per the Project Completions Procedure.

keywords: checklist, MV switchgear, LV switchgear, oil & gas project, electrical

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