Gas insulated substation (GIS)

KNR  has done over 12 assignments of design and detailed engineering services for gas insulated substations up to 400kV for national and overseas clients.


  • Review of schemes & selection
  • Protection SLD
  • Technical specification for Gas Insulated
  • Switchgear
  • Analysis & selection of bay width & depth
  • Plot plan for GIS
  • Interface connection and take off arrangement
  • GIS layout
  • Transformer yard layout
  • Grounding design of GIS substation using CDEGS
  • as per CIGRE-44
  • Lightning protection
  • Indoor-outdoor lighting
  • Ventilation system

Civil and Structural

  • Analysis between PEB and RCC building
  • Economic selection of width of GIS building
  • Study of soil investigation report
  • Design of GIS building columns and beams
  • Selection of foundation type
  • Design of foundation
  • Architectural drawings
  • Floor & roof slab design
  • Crane corbel beam design