Outdoor vacuum circuit breaker
Outdoor vacuum circuit breaker

Outdoor vacuum circuit breaker

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Specifications

ZW8 12 / 630A 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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    Outdoor vacuum circuit breaker