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How to ensure operator protection by GIS switchgear

2021-03-19

  • The gas-insulated switchgear is safe to touch thanks to its earthed metal enclosure.
  • HV HRC fuses and cable terminations are only accessible if branch circuits are earthed.
  • Operation is only possible if the enclosure is fully sealed (and any doors closed).
  • A maintenance-free pressure absorption system, laid out as “special cooling system” reduces pressure-related and thermal impacts of an arc fault so that personnel and building will be safe.

Congo plant for boilters protection control 24kV switchgear

Project for NGCP National Grid Corporation of the Philippines

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