Sandi ZW7-40.5 series outdoor high voltage vacuum circuit breaker

I. Overview ZW7-40.5 series outdoor high voltage vacuum circuit breaker (hereinafter referred to as breaker) three-phase AC 50Hz, rated voltage of 40.5kV outdoor high-voltage electrical equipment. Attached spring actuator or electromagnetic actuator, can remote control electric points, closing, it may be manual storage, manual opening and closing. Design performance in line with CB1984-89 "AC high voltage circuit breakers" national standards. And meet the IEC-56 "AC high voltage circuit breakers" International Electrotechnical Commission standards. The overall structure of the product strut insulator; on porcelain interior vacuum interrupter, as the pillar under the porcelain vase. Suitable for frequent operation place. And with good sealing, anti-aging, high pressure, no burning, no explosion, long life, easy installation and maintenance advantages. Mainly used to control and protect the outdoor 40.5KV power transmission systems, also applicable to normal operation and short circuit protection of urban and rural power grids and industrial and mining enterprises. Second, the use of environmental conditions 1, ambient air temperature: up to +40 degrees, the lower limit of -40 degrees; 2, elevation: ≤2000m (if the altitude increases, the rated insulation level corresponding increase); 3, air pressure: less than 700Pa (quite wind speed 34m / s); 4, seismic intensity: less than 8 degrees; 5, pollution class: Ⅳ grade; 6, the maximum daily temperature: no more than 25 degrees; 7, relative humidity: daily average of not more than 95%, on average less than 90%; 8, non-flammable, explosion, chemical corrosion and severe vibration. Third, the model is defined Fourth, the main technical parameters of five or six dimensions, Ordering Information 1, product name, model, rated current, rated voltage, rated breaking current; 2, rated operating voltage and energy storage motor rated voltage; 3, The current ratio and current transformer with accuracy class times; 4, tank shell materials and colors; 5, if other special requirements, negotiated when ordering.