ZW8 12 / 630A outdoor vacuum circuit breaker

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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.

◆型号意义

◆ 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
2	Rated insulation level	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