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Gas-insulated switchgear ELK-14 C up to 245 kV

Eco-efficient and compact solution

Gas-insulated switchgear ELK-14 C is the new generation for 245 kV designed to reduce complexity, life cycle costs and environmental impact. The compact design fits any installation environment and offers convenient operation and serviceability.


  • Power transmission
  • Integration of renewable power generation units to the grid
  • Industry applications

Why Hitachi Energy?

  • Eco-efficient, small, lean three-phase enclosure with single-phase insulators
  • Compact design reduces infrastructure costs and environmental impact
  • Reduced weight, grey energy (energy used in production) and thermal losses
  • Frontal access to drives for manual operation
  • Provisions for excellent service continuity during maintenance and repair jobs
  • Monitoring, control, protection and communication features for smooth integration into digital substation systems using IEC 61850

Brief performance data

GIS ELK-14 C  
Rated voltage [kV] 245 / 253
Rated frequency [Hz] 50 / 60
Rated short-duration power-frequency withstand voltage (1 min) [kV] 460
Rated lightning impulse withstand voltage (1.2/50 µs) [kV] 1050
Rated switching impulse withstand voltage (250 / 2500 µs) [kV] n/a
Rated normal current – busbar / feeder [A] 3150
Rated short circuit-breaking current [kA] 50
Rated short-time withstand current (up to 3 s) [kA] 50
Rated peak withstand current [kA] 135
Ambient temperature range [°C] -30 … +50
Installation indoor/outdoor/offshore

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