EconiQ™ gas-insulated switchgear (GIS) ELK-04, 145 kV
Eco-efficient modular GIS solution for reliable energy supply
EconiQ ELK-04, 145 kV is the most robust SF6-free gas-insulated switchgear (GIS). It combines a low carbon footprint, superior reliability and low lifecycle costs in a flexible product layout.
It is sustainable and eco-efficient product proven to significantly reduce the CO2 equivalent (CO2 eq) emissions during the complete lifecycle of the product, compared to the SF6 solution.
Based on the well-known modular design of ELK-04 with the largest installed base of any sub-transmission GIS worldwide. It offers easy operation at high-performance ratings and broad flexibility for optimizing substation layouts.
EconiQ ELK-04, 145 kV is using a 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.
Applications
- Power transmission
- Integration of renewable power generation units to the grid
- Offshore and onshore wind power connections
Why Hitachi Energy?
- Most reliable eco-efficient GIS solution on the market
- Exceptional engineering design
- Using a well-proven gas circuit breaker technology
- Softer switching characteristic of gas circuit breakers with low stress to neighbouring quipment
- Based on the ELK-04 product family with the largest installed base of any sub-transmission GIS
- Earthquake resistant up to ground acceleration of 1g
Benefits of the eco-efficient technology
- Future proof to environmental regulations
- No risk of accidental leakage of SF6
- Transparent environmental performance, thanks to the detailed product life cycle assessment
Brief performance data
EconiQ GIS ELK-04, 145 kV | |
---|---|
Rated voltage [kV] | 145 |
Rated short-duration power-frequency withstand voltage [kV] | 275 |
Rated short-duration power-frequency withstand voltage across [kV] | 315 |
Rated lightning impulse withstand voltage [kV] | 650 |
Rated lightning impulse withstand voltage across isolating distance [kV] | 750 |
Rated normal current [A] | 3150 |
Rated short-time withstand current [kA] | 40 |
Rated duration of short-circuit [s] | 3 |
Rated peak withstand current [kA] | 108 |
Rated operating sequence | O-CO |
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