Gas-insulated switchgear ELK-3 C up to 420 kV
High performance ratings in a compact design
The gas-insulated switchgear ELK-3 C is the new generation ELK-3 for 420 kV, 5000 A, 63 kA designed to reduce complexity, life cycle costs and environmental impact. The compact design fits any installation environment and features convenient operation and serviceability. A single interrupter circuit breaker enables manufacturing, testing and shipment of entire bays, which reduces installation and comissioning time.
Applications
- Power transmission
- Integration of renewable power generation units to the grid
- Industry applications
Why Hitachi Energy?
- Eco-efficient, compact design based on a single interrupter circuit breaker
- Reduces use of SF6 gas by 35 percent compared with predecessor products and features excellent gas tightness for minimum leakage
- Reduces weight, grey energy (energy used in production) and thermal losses
- Excellent accessibility, convenient operation
- Small bay width of 2250 mm
- Frontal access to drives for manual operation
- Integrated access platform for inspection
- Shipment of completely assembled and tested bays on flat racks reduces installation and commissioning time by 60 percent, compared with predecessor products
- Monitoring, control, protection and communication features for smooth integration into digital substation systems using IEC 61850
Brief performance data
| GIS ELK-3 C | |
|---|---|
| Rated voltage [kV] | 420 |
| Rated frequency [Hz] | 50/60 |
| Rated short-duration power-frequency withstand voltage (1 min) [kV] | 650 |
| Rated lightning impulse withstand voltage (1.2/50 µs) [kV] | 1,425 |
| Rated switching impulse withstand voltage (250 / 2,500 µs) [kV] | 1,050 |
| Rated normal current – busbar / feeder [A] | 4,000/5,000 |
| Rated short circuit-breaking current [kA] | 63 |
| Rated short-time withstand current (up to 3 s) [kA] | 63 |
| Rated peak withstand current [kA] | 170 |
| Bay width [mm] | 2,250 |
| Ambient temperature range [°C] | -30 … +55 |
| Installation | indoor / outdoor |
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