ZW32-12 / 630A-20 outdoor high-voltage vacuum circuit breaker pole Chengdu market price offer (hereinafter referred to as breaker) is the digestion of foreign advanced technology, combined with the characteristics of China's power industry, the latest research and development of a new generation of outdoor vacuum circuit breakers. The circuit breaker is a three-phase AC 50hz, rated voltage 12kv outdoor high voltage switchgear. Mainly used for urban and rural power substation and industrial and mining enterprises distribution system, as a sub, load current, overload current and short circuit current purposes. Due to the special properties of the vacuum breaker, especially for frequent operations and oil-free transformation of the place. zw32-12 Outdoor AC high voltage vacuum circuit breaker in line with gb1984 "AC high voltage circuit breakers", jb3855 "3.6 ~ 40kv outdoor AC high voltage vacuum circuit breaker," and related iec standard. 3 features can be equipped with spring operating mechanism, closing with a breaking load current, overload current and short-circuit current, and other basic functions, is ZW32-12 series of basic types. Circuit breakers and disconnectors with the use of the composition of a clear fracture "combination circuit breaker" (hereinafter referred to as "a combination of circuit breaker"). On the isolation switch for users to choose to use silicone rubber insulated jacket, the jacket has anti-snow sand, filthy anti-corrosion characteristics, can effectively avoid freezing and oxidation isolation switch. Breaker can be attached arresters, surge arresters can be installed in the inlet and outlet on either side according to user requirements; circuit breakers can be equipped with surge controller, it has to hide the inrush current and over-velocity off function; circuit breakers can be installed 2 to 3 measurement or metering transformers. Normal conditions 1. Ambient temperature: maximum temperature: + 40 ℃, the lowest temperature: -45 ℃; maximum daily temperature: 25 ℃; 2. humidity: daily average relative humidity ≤95%, the average monthly relative humidity ≤90%; 3. The daily average saturated vapor pressure of ≤2.2 × 10mpa, monthly average saturated vapor pressure ≤1.8 × 10mpa; 4. altitude less than 2000m; plateau does not exceed 3500m 5. seismic intensity not more than 8; 6. wind speed of not more than 35m / s; 7. Pollution degree ⅳ level; 8. No flood, explosion, chemical corrosion and recurrent severe vibration. 3.1.1 breaker main technical parameters in Table 1 No. Name Unit Data 1 Rated voltage KV 10 2 123 maximum operating voltage Rated insulation level 1min power frequency withstand dry wet test 34 test 42 Lightning impulse withstand voltage (peak) 754 Rated Current A 630 5 Rated short circuit breaking current KA 12.5 / 16/20 6 rated capacitor bank breaking current A 400/630 7 Rated operating sequence O - 0.3s - CO - 180s - CO 8 rated short-circuit breaking current Breaking times 309 rated short-circuit current (peak) KA 50 10 Rated peak withstand current 11 Rated short time withstand current 12.5 / 16/2012 rated short duration S 4 13 full-off time ms ≤100 points Opening time (Shunt Trip) maximum operating voltage of 15 to 50 rated operating voltage of 15 to 50 the minimum operating voltage of 30 to 60 25 to 5014 Closing time Mechanical life 1,000,015 times the rated operating voltage V DC, AC: 110,220 16 A spring mechanism operating mechanism to allow the moving contact wear thickness 17 mm 3 18 Weight kg 152 (182 with isolation) 19 charging motor rated input power ≤250 20 overcurrent release rated current A 5% ± 10 Accuracy trip