outdoor vacuum circuit breaker(ZW7-40.5)

Summary: ZW7-40.5 series outdoor high-voltage vacuum circuit breaker is used in ac 50Hz, voltage 40.5Kv three-phase power system. It is used for open and close load current, overload current and short circuit. Main function: Apply the vacuum arcing, open circuit ability, long service life, mechanical electrical 10000 timesSimple structure, free maintenance, no maintenance long cycleGood insulation performance, strong ability to prevent uncleannessMatch spring or electromagnetic operation structure, mechanically sound and frequent operation, no fire and explosion hazardCurrent transformer is installed inside, precision is 0.2 level, which can realize the three-phase interactive protection.Enclosed condensation controller, can maintain a circuit breaker in a certain temperature, humidity reliable operate.Ambient condition: Ambient air temperature: below 40 centigrade degree, above minus 30 centigrade degree Height: less than or equal to 2000 meters (if need a higher altitude, then the rated insulation level increased accordingly) Wind pressure: no more than 700Pa (equivalent wind speed 34m/s) Amplitude: earthquake intensity 8 degrees Pollution level : III level Maximum daily temperature difference: no more than 25 centigrade degree Main technical parameters: Rated voltageRated insulation level power frequency withstand voltage dry/humidity draught of thunder withstand voltage(peak value)Rated currentRated short-circuit breaking currentRated operations sequenceRated short-circuit current breaking timesRated short-circuit closing current(peak value)Rated peak withstand currentRated short-time withstand current10. Rated short-circuit duration time 11. Average breaking speed 12. Average closing speed 13. Contactor closing bounce time 14. Three-phase closing synchronism jet leg 15. Closing time 16. Breaking time 17. Mechanical life 18. Rated operate voltage and subsidiary loop of rated voltage 19. Every-phase loop dc current resistance(not contain mutual inductor) 20. Move and static contactor allows wear thickness 21. Weight