Item Name: ZW8-12 series Outdoor Vacuum Circuit Breaker
The ZW8-12 series outdoor HV vacuum automatic circuit reclosers(short for brea) be used for switching on/off load current, overload current and short circuit current in three-phase power systms with AC 50Hz and rated voltage 12KV. Matching with recloser controllers, the breaker can identify current characteristic and realize repetitious autoeclosing or permanent fault isolation. With its own PT power, it becomes an intelligence breaker having controlled voltage and current signal output. With electric PT Power, It povides three segment compound protection of over current time delay, rush current time delay and short circuit quick break.
| Item | Unit | Data |
| Rated Voltage | kV | 12 |
| Rated Current | A | 630, 1000, 1250 |
| Rated Frequency | Hz | 50 |
| Rated insulating level | 1min power frequency withstand voltage | Dry | kV | 42 |
| Wet | 34 |
| Lightning impluse withstand voltage(peak) | 75 |
| Rated short-circuit breaking current | kA | 12.5, 16, 20 |
| Breaking times of rated short-circuit breaking current | time | 30.31.5, 50 |
| Rated short-circuit making current(peak) | kA | 31.5, 40, 50 |
| Rated peak withstand current | kA |
| Rated short-time withstand current | kA | 12.5, 16, 20 |
| Rated short-circuit current duration | s | 4 |
| Rated operating order | | O-0.3S-CO-180S-CO |
| Mechanical life | time | 10000 |
| Rated operating voltage | V | AC/DC220 |
| Over current trip rated current | A | 5 |
| Weight | KG | 160 |
Standard:Iec 6271-100&60694
