Outdoor vacuum circuit breaker
ZW8-12 series outdoor high voltage AC vacuum circuit breaker (hereinafter referred to as “circuit breaker”) is a three-phase AC 50Hz outdoor high voltage switchgear; mainly used for rural power network and city network 10kV system, as the load, load current, overload current And short circuit current; can also be used for other similar places. ZW8-12 series of outdoor exchange high voltage vacuum circuit breaker in line with national standards GB1984 “AC high voltage circuit breaker” and IEC 60056 “high voltage AC circuit breaker” and other standards.
Conditions of use
1. ambient air temperature: -40 ℃ ~ +40 ℃;
2. Altitude: no more than 2000m;
3. The surrounding air can be dust, smoke, corrosive gases, steam or salt fog pollution;
4. wind speed does not exceed 34m / s (equivalent to 700Pa on the cylindrical surface);
5. Vibration or ground from the switchgear and control equipment is negligible;
6. Pollution level: Ⅲ level.
| Serial number | Name | Company | data | ||
| 1 | Rated voltage | KV | 12 | ||
| 2 | Rated insulation level | 1min Power frequency withstand voltage (RMS | KV | 42 | |
| Lightning impulse withstand voltage (peak) | KV | 75 | |||
| 3 | Rated frequency | Hz | 50 | ||
| 4 | Rated current | A | 630 1250 | ||
| 5 | Rated short-circuit breaking current | KV | 12.5 16 20 | ||
| 6 | Rated short-circuit closing current (peak) | KV | 31.5 40 50 | ||
| 7 | Rated peak withstand current | KV | 31.5 40 50 | ||
| 8 | icw | KV | 12.5 16 20 | ||
| 9 | Rated short-circuit duration | S | 4 | ||
| 10 | Rated short-circuit breaking current | second | 30 | ||
| 11 | Rated operation sequence | 0-0.3s-CO-180s-CO | |||
| 12 | Mechanical life | second | 10000 | ||
| 13 | Overcurrent tripping current | A | 5 | ||
| 14 | Two circuit 1min power frequency withstand voltage | VV | 2000 | ||
| 15 | Permissible thickness of contact | mm | 3 | ||
| 16 | Rated operating voltage and rated voltage of auxiliary circuit | V | AC220V、DC220V·DC24V | ||
Note: ZW8-12 circuit breaker rated current of 1000A, only applies to the altitude of ≤ 1250 m area
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