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Description
ZW6 -12/630-16(20) type outdoor high-voltage vacuum circuit breaker is applied for AC three-phase power system of rated voltage 12 KV or below with 50Hz. It is mainly applied for switching on-ff of load current, overload current and short current in rural and urban power net or other similar occasions, and it also can be used as breaking switch for urban power net of 12KV.
Technical data
Fitting adjustment parameter of breake:
| No. | Item | Unit | Parameter | |
| 1 | Contact opening | mm | 9±1 | |
| 2 | Contact over travel | 3±1 | ||
| 3 | Average switching on speed | m/s | 0.6 ±0.2 | |
| 4 | Average switching off speed | 1.0 ±0.2 | ||
| 5 | Contact switching on bounce time | ms | ≤2 | |
| 6 | Three-phase switching off synchroneity | ms | ≤2 | |
| 7 | Switching on time | S | ≤0.1 | |
| 8 | Switching off time | Max.operation voltage | ≤0.06 | |
| Min.operation voltage | ≤0.1 | |||
| 9 | Circuit DC resistance of each phase | μΩ | ≤200 | |
| 10 | Phase-phase distance(arc-extinguishing room) | mm | 193 | |
Rated technical data of circuit breaker refers:
| No. | Name | Unit | Parameter | ||
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated insulation level | 1 min withstand voltage | Dry type | kV | 42 |
| Wet type (to earth) | 34 | ||||
| Hunder impact withstand vottage (peak value) | 75 | ||||
| 3 | Rated current | A | 630 | ||
| 4 | Rated frequency | Hz | 50 | ||
| 5 | Rated short breaking current | kA | 12.5,16,20 | ||
| 6 | Rated short making current (peak value) | 31.5,40,50 | |||
| 7 | Rated peak withstand cunent | 31.5,40,50 | |||
| 8 | Rated short-time withstand current | 12.5,16,20 | |||
| 9 | Operation sequence | off-0.3s-on off-180s-on off | |||
| 10 | Rated short switching on/off times | times | 30 | ||
| 11 | Mechanical life | V | 10000 | ||
| 12 | Rated operating volt equip wtth CT spring operating mechanism | DC24,48V,AC DC110V,220V | |||
| 13 | Allowed wearing thickness of contactor | mm | 3 | ||
| 14 | Rated current of over-current release | A | 5 | ||
| 15 | Weight | kg | 130 | ||
Overall Dimension & Outline dismension
ZW6-12 series outdoor high-voltage vacuum circuit breaker