Spring vacuum circuit breaker product
Main features of the products
- The passivation surface treatment process of zinc-cobalt alloy hexavalent chromium in Malaysia is introduced;
- Salt spray test up to 300 hours for the mechanism, 10 times that for the normal product;
- The copper-based high-pressure oil-free bearings imported from German are used to achieve self-lubrication of drive mechanism;
Main Technical Parameters
- Rated voltage: 12kV
- Rated current: 630-4000A
- Rated short-circuit breaking: 20-40kA
- Short-circuit breaking times: 20-30 times
- Mechanism life: 30,000 cycles
- Altitude: 1000m/4000m
Model and configuration
| Model and configuration | ZN139-12 | Z139-12/G | ZN139-12/GS | ZN139-12/I | Z139-12/GI | ZN139-12/GSI | |
|---|---|---|---|---|---|---|---|
| Insulation mode | Compound | ● | ● | ||||
| Solid insulation | ● | ● | ● | ● | |||
| Vacuum Bubble | CHINA | ● | ● | ● | ● | ||
| JVs | ● | ● | |||||
| Online Monitoring | ● | ● | ● | ||||
| Place of use | Ordinary economical products | Frequent action, high insulation requirements, and Class I and II load occasions | Frequent action, high insulation requirements, and Class I load occasions | Occasions not allowed with faulty operations | Frequent action, high frequency requirements, faulty operation not allowed, Class I load occasions | Frequent action, high frequency requirements, faulty operation not allowed, Class I load occasions | |
