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Installation and Commissioning Services

Systems Power Engineering Limited has extensive experience in both the installation and commissioning of all manufacturers new and refurbished high voltage distribution equipment. Commissioning services include but are not limited to the following:-

High Voltage Switchgear

  • AC pressure testing of the primary circuit
  • AC pressure testing of the secondary circuit
  • Current transformer mag curves, flick, ratio tests
  • Voltage transformers polarity and ratio check
  • Primary injection testing of protection relays
  • Secondary injection testing of protection relays
  • Circuit breaker timing testing
  • Functionality checks

Testing of Transformers

  • High voltage winding insulation resistance
  • Low voltage winding insulation resistance
  • Winding ratio testing
  • Buchholz relay testing
  • Oil sampling and testing

Protection Testing

  • Overcurrent and earth fault schemes
  • Directional overcurrent and earth fault schemes
  • Differential schemes
  • Bias differential schemes
  • Unit protection schemes
  • Time limit fuse schemes
  • Buchholz protection schemes
  • Restricted earth fault schemes
  • Stand by earth fault schemes
  • Neutral voltage displacement schemes
  • Bus zone schemes
  • Frame leakage schemes

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