| Main Parameter | Unit | Specification | |
| Rated Voltage | kV | 36 | |
| Rated Insulation Level | Lightning Impulse Withstand Voltage (1.2/50 μs) | kv | 215/200 |
| Power Frequency Withstand Voltage (1min) | 118/95 | ||
| Rated Current | A | 1600/2000 | |
| Rated Short-Circuit Withstand/Breaking Current | kA | 20/25/31.5 | |
| Rated Operating Sequence | O-0.3s-CO-180s-CO | ||
| Breaking Times at Rated Short-Circuit Withstand/Breaking Current | Times | 20 | |
| Rated Short-Circuit Breaking Current | kA | 50/60/80 | |
| Rated Short-Circuit Switching Current | kA | 50/60/80 | |
| Mechanical Life | Times | 10000 | |
| Auxiliary Circuit Rated Voltage | V | DC220/110 | |
| Rated Operating Voltage | AC220 | ||
| Contact Opening Distance | mm | 22±2 | |
| Contact Super Travel | mm | 4±1 | |
| Average Opening Speed | m/s | 1.4~1.8 | |
| Average Closing Speed | m/s | 0.4~0.9 | |
| Contact Bounce Time | m/s | 3 | |
| Synchronism of the Opening of the Three Phases | ms | 2 | |
| Closing Time | ms | 75(spring mechanism) | |
| Opening Time | ms | 60 | |
The ZW7-36 Series Circuit Breaker has the advantage of requiring minimal maintenance due to its vacuum interrupter characteristics, which typically do not necessitate frequent maintenance work.
Under dry test conditions, the 1-minute power frequency withstand voltage between phases and between phase to ground is 95/185kV; under wet test conditions, it is 80kV; the lightning impulse withstand voltage (peak value) is 215kV.
Yes, the ZW7-36 Series Circuit Breaker is suitable for locations with frequent operations because of its high mechanical life and reliable operational performance.
