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AZW pole type vacuum circuit breaker

Specification   No. Item AZW-12 Pole vacuum load breaker Unit Parameters 1 Rated voltage kV 12 24 2 Rated frequency Hz 50/60 3 Rated current A 630 4 1 min Power frequency withstand voltage Common value kV 42 50 Across insulate distance kV 49 60 5 Lightning impulse withstand voltage Common value kV 75 125 Across insulate distance kV 85 145 6 Rated short circuit breaking current kA 20 16.2 7 Rated peak value withstand current kA 50 40.5 8 Rated short time withstand current kA 20/4s 20/2s 9 Rated short circuit making current kA 50 50 10 Mechanism lifetime times 10000 11 Rated short circuit breaking current breaking times times 34 30 12 Rated operation sequence   on - 0.3s -on off - 180s -on off 13 Second loop 1 min power frequency withstand voltage kV   2 14 Rated operating voltage V DC48?110?220      AC 220 15 Weight kg 70   16 Connector over stroke mm   <=2 17 3 phases breaking periodic ms   <=2 18 Connector open distance mm   15±1.5 19 Rated breaking time S   <=0.06 20 Rated making time S   <=0.1

General Description

AZW-12 type outdoor overhead high-voltage vacuum circuit breaker, an outdoor distribution equipment with the rated voltage of 12kV and three-phase alternating current 50Hz, is mainly used to cut off and make the load current, overload current and short-circuit current in electrical system, which is suitable to protect and control for the distribution system of transformer substation, mining and industrial enterprise, more suitable for country's electric networks and the fields with frequent operation. The product is in conformity with the standards of GB1984-2003 «Alternating Current High voltage Circuit Breaker»,JB3855-1996«3.6~40.5kV Indoor Alternating Current High Voltage Vacuum Circuit Breaker», DL403-91«Technical Condition Of Order For 10~35kV Indoor Alternating Current High Voltage Circuit Breaker»and the requirement of IEC56.