Outdoor vacuum circuit breaker

ZW7-40.5 Outdoor Vacuum Circuit Breaker

ZW7-40.5 Outdoor Vacuum Circuit Breaker

  • ZW7-40.5 Outdoor Vacuum Circuit Breaker

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ZW7-40.5 series outdoor high voltage vacuum circuit breaker is three phase AC 50Hz, rated voltage is 40.5kV outdoor high-voltage electrical equipment , attached the spring operator or electromagnetic actuator can be well controlled electricopening and closing can also be Manual storage, manually open and close. Design performance meet GB1984-89 ”AC high voltage circuit breakers“; national standards, and meet the IEC-56 “high-voltage AC circuit breakers”; International Electro-technical Commission standards. ZW7-40.5 series vacuum circuit breaker is mainly used for outdoor 35kV power transmission system control and protection also applies to urban and rural power distribution networks and industrial and mining enterprises in the normal operation and short circuit protection purposes. Theoverall structure of the insulator pillar product type; built vacuum interrupter type on the vase, porcelain vase for the next pillar vase. For frequent operation place. And has good sealing, anti-aging, high pressure, no burning, no explosion, long life, convenient installation and maintenance features.

Item Units Value
Rated voltage KV 40.5
Rated insulation level 1min power frequency withstand voltage Dry 95
Wet 80
Lighting impulse withstand voltage(peak)   185
Rated current A 1.25016E+11
Rated short-circuit breaking current KA 20,25,31.5
Rated operating sequence   O-0.3s-CO-180s-CO
Rated short-circuit breaking current breaking times times 20
Rated short- circuit closed current (peak) KA 50,63,80
Rated peak withstand current
Rated short-time withstand current 20,25,31.5
Rated short-circuit duration s 4
Average opening speed ms 1.5±0.3
Average closing speed 0.6±0.3
Contact closing bounce duration ms ≤ 5
Three phase closing and opening synchronism ≤ 2
Closing time ≤ 90
Opening time ≤ 60
Mechanism life times 10000
Rated operating voltage and auxiliary loop rated voltage V DC110/220
Phase loop DC resistance (without current transformer) µ Ω ≤ 100
Permitted accumulate wear-thickness of dynamic and static contact mm 3
Weight kg 800

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