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ZW6-12/630-16(20) Outdoor Vacuum circuit breaker
ZW6-21/630-1620type outdoor vacuum circuit breaker accounts for three-phase electrical system with 12 KV and 50Hz, mainly used in network for breaking or closing load current, overload current and short-circuit current, or used as breaking switch in ciry 12kV degree network.
| Table 1 for installing parameter |
| Number | Item | Unit | Prameter | | 1 | Contact distance | mm | 9±1 | | 2 | Contact travel | 3±1 | | 3 | Average switch-on speed | m/s | 0.6±0.2 | | 4 | Average switch-off speed | 1.0±0.2 | | 5 | Contact switch-on bounce time | ms | ≤2 | | 6 | Three-phase switch-off conespnding time | ms | ≤2 | | 7 | Switch-on time | s | ≤0.1 | | 8 | Switch-off time | Max.Operating voltage D | ≤0.06 | | Min.Operating voltage | ≤0.1 | | 9 | Each phase loop DC resistance | μΩ | ≤200 | | 10 | Distance between phases (arc room) | mm | 193 |
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| Table2 for rated technique parameter |
| Number | Item | Unit | Prameter | | 1 | Rated voltage | KV | 12 | | 2 | Rated insulating level | 1min power | Dry | KV | 42 | | Wet(to ground) | 34 | | Lighting impulse voltage withstand (peak) | 75 | | 3 | Rated current | A | 630 | | 4 | Rated frequency | Hz | 50 | | 5 | Rated short circuit breaking current | KA | 12.5,16,20 | | 6 | Rated short circuit closing curent (peak) | 31.5,40,50 | | 7 | Rated short circuit closing current | 31.5,40,50 | | 8 | Rated short-times of rated short-circuit 4S | 12.5,16,20 | | 9 | Operating order | | off-0.3S-on-off-180S-on-off | | 10 | Breaking times of rated short-circuit | | 30 | | 11 | Mechanical life | 10000 | | 12 | Rated operating voltage with CT spring operating dvice | V | DC24,48V AC DC110V,220V | | 13 | Permitted grinding thickness of contact | mm | 3 | | 14 | Rated current of over-current trip | A | 5 | | 15 | Weight | kg | 130(standard) |
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