EconiQ™ gas-insulated line (GIL) ELK-3, 420 kV

EconiQ GIL ELK-3, 420 kV showcase Hitachi Energy’s commitment to reducing the volume of sulfur hexafluoride (SF₆) in transmission GIS voltage ratings. This product introduces an important step towards complete 420 kV eco-efficient switchgear by substituting the insulation gas in the product’s busducts with SF₆ -free gas mixture.

EconiQ GIL ELK-3, 420 kV is the ideal solution for a reliable eco-efficient energy supply up to a rated voltage of 420 kV. Based on a few building blocks with standardized dimensions, same footprint as SF₆ and easy operation, the product allows multiple layouts and incremental substitution of the insulation gas with an eco-efficient solution.

The EconiQ GIL of ELK-3, 420 kV, are operating with an insulation gas mixture of Fluoronitriles (C4-FN), Carbon dioxide (CO₂) and Oxygen (O₂). This mixture essentially eliminates the CO₂ equivalent emissions of the insulation medium compared to SF₆ gas.

EconiQ is Hitachi Energy’s eco-efficient portfolio for sustainability where products, services and solutions are proven to deliver exceptional environmental performance.

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

• Minimal product size allows to fit in existing layouts
  
• Complete single-phase encapsulation
• Earthquake resistant up to ground acceleration of 1g
• Ideal solutions for hydropower plants, offshore wind farms, and container solutions in combination with complete bays
• Based on the well-proven ELK-3 family and five decades of experience in the GIS technology

• Highly reliable switchgear technology with eco-efficient insulation gas in the busducts
• No risk of accidental leakage of SF₆