EconiQ® Dead Tank Circuit Breaker 420 kV
Combining low carbon footprint, superior reliability and low life cycle costs
The EconiQ 420PM63-HA is the first eco-efficient Dead Tank Circuit Breaker (DTB) at transmission voltage level. It combines a low carbon footprint, superior reliability and low life cycle costs.
EconiQ is Hitachi Energy’s eco-efficient portfolio with products, services, and solutions proven to deliver exceptional environmental performance.
Throughout its complete life cycle, the EconiQ 420PM63-HA Dead Tank Circuit Breaker significantly reduces CO2 equivalent (CO2eq) emissions compared to the existing SF6 solutions.
This product offers easy operation at high-performance ratings by using well-established gas circuit-breaker technology, which has been utilized for decades in transmission systems globally.
The eco-efficient Dead Tank Circuit Breaker uses as a gas mixture of Carbon Dioxide (CO2), Oxygen (O2) and a specific fluoronitrile (C4-FN). The mixture essentially eliminates the CO2eq emissions of the insulating medium.
Applications
- Line, transformer, reactor and capacitor switching
- Point-on-wave switching
- High seismic applications
- High altitude applications
Why Hitachi Energy?
- It’s the first eco-efficient Dead Tank Circuit Breaker at transmission voltage level
- Comparable gas handling procedure to SF6 breakers, minimizing training effort and adaptation of service concepts
- Tested according to IEEE and IEC standards with mechanical endurance class M2
- Identical gas mixture across EconiQ GIS/DTB portfolio
Benefits of the eco-efficient technology
- Reduction of total life cycle emissions
- No risk of accidental leakage of SF6
- Transparent environmental performance thanks to a detailed product life cycle assessment
Brief performance data
| EconiQ 420PM63-HA | ||
|---|---|---|
| Rated voltage [kV] | 362 | 420 |
| Rated frequency [Hz] | 50/60 | |
| Rated short-duration power-frequency withstand voltage (1 min) [kV] | 555 | 610 |
| Rated lightning impulse withstand voltage (1.2/50 μs) [kV] | 1300 | 1425 |
| Rated switching impulse withstand voltage (250/2500 μs) [kV] | 900 | 1050 |
| Rated normal current [A] | up to 5000 | |
| Rated short-time withstand current [kA] | 63 | |
| Rated peak withstand current [kA] | 171 | |
| Ambient temperature [°C] | -30*) / +50 | |
*) Below -30°C with tank heaters.
The data are not limiting values. Additional data on request.