EconiQ® gas-insulated switchgear (GIS) ELK-3, 550 kV

EconiQ GIS ELK-3, 550 kV, is the most robust SF₆-free gas-insulated switchgear (GIS). It combines a low carbon footprint, superior reliability and low life cycle costs in a flexible product layout.

EconiQ GIS ELK-3, 550 kV, is a sustainable and eco-efficient product proven to significantly reduce the CO₂ equivalent emissions during the complete life cycle of the product, compared to the SF₆ solution.

The EconiQ ELK-3, 550 kV, uses a gas mixture of carbon dioxide (CO₂), oxygen (O₂) and C4-fluoronitrile (C4-FN). The mixture essentially eliminates the CO₂ equivalent emissions of the insulating medium.

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

• Most reliable eco-efficient GIS solution on the market
• Exceptional engineering design
• Using a well-proven gas-circuit breaker technology
• A standard eco-efficient insulation gas for high-voltage equipment will enable the industry to adopt a standardized, eco-efficient gas approach from transmission to ultra-high voltage
• Softer switching characteristic of gas-circuit breakers with low stress to neighboring equipment
• Based on the well-proven ELK-3 family with the largest installed base of any transmission GIS
• Earthquake resistant up to ground acceleration of 1g

• Best-in-class life-cycle assessment result
• Highly reliable switchgear technology with eco-efficient insulation gas
• No risk of accidental leakage of SF₆

* Higher ratings than IEC according to GB standard. The data are not limiting values. Additional data on request.