35KV outdoor high voltage vacuum circuit breaker ZW7-40.5 Technical Parameters

1.1 Overview ZW7 series 40.5KV type outdoor vacuum circuit breakers, Shaanxi Tai Electric Equipment Co., Ltd. developed the international level of the early nineties outdoor products. It is used for both non-oil power plants, substations, power equipment and power line control and protection, can also be used to place frequent operation, she not only for the construction of a new substation, but also to the old substation transformation. 1.2 Purpose and conditions of use ZW7 series 40.5KV Outdoor vacuum circuit breaker for AC 50HZ three-phase power system, as a sub, load current, overload current and short circuit current purposes. Products based on the conditions of use can be divided into ordinary type, pollution prevention and Plateau standard: GB1984 "AC high voltage circuit breakers" and IEC56 "AC high voltage circuit breakers" standard, and ONJ.520.023JT (outdoor high voltage vacuum circuit breaker technology conditions ). Ordinary products Conditions:. A maximum ambient air temperature + 40 ℃ lower limit of the general area of ??-30 ℃, alpine region -40 ℃ b. Elevation:. 2000 m c partial pressure of not more than 700Pa (equivalent to wind speed 34 m / S) d.. seismic intensity, no more than 8 degrees e. air pollution level Ⅲ