Description
The ZW32-12 outdoor high-voltage vacuum circuit breaker is used in a three-phase power system with AC 50H and voltage 10-12KV. It is used for breaking and closing load current. It has overload and short-circuit protection functions to meet control and measurement requirements. Remote control, monitoring, etc. It is suitable for protection and control in power distribution systems of substations and industrial and mining enterprises, as well as frequent operation places in rural power grids.
Specifications
| No. | Item | Unit | Data | ||
| 1 | Rated voltage | kV | 12 | ||
| 2 | Rated insulation level | 1min power frequency withstand voltage | Dry test | 42 | |
| Wet test | 34 | ||||
| Lightning impulse withstand voltage (peak value) | 75 | ||||
| 3 | Rated current | A | 630；400；200 | ||
| 4 | Rated short-circuit breaking current | kA | 20；16；12.5 | ||
| 5 | Rated operating sequence | O-0.3s-CO180s-CO | |||
| 6 | Rated short circuit breaking times | times | 30 | ||
| 7 | Rated short-circuit making current (peak value) | kA | 50 | ||
| 8 | Rated peak withstand current | ||||
| 9 | Rated short circuit withstand current | 20 | |||
| 10 | Rated short circuit duration | s | 4 | ||
| 11 | Opening time (shunt trip) | MAX operating voltage | ms | 15~50 | |
| Rated operating voltage | |||||
| Min operating voltage | 30~60 | ||||
| 12 | Closing time | ms | 25~50 | ||
| 13 | full breaking time | ≤100 | |||
| 14 | Arcing time | ≤20 | |||
| 15 | Mechanical life | times | 10000 | ||
| 16 | Rated input power of energy storage motor | W | 40 | ||
| 17 | Rated operating voltage and auxiliary circuit rated voltage | V | DC220/110/24 | ||
| AC220/110/24 | |||||
| 18 | Energy storage time at rated voltage | s | ≤100 | ||
| 19 | Overcurrent release | Rated current | A | 5 | |
| Trip current accuracy | % | ±10 | |||
