Hot sales ZW8-12kv,ZW8-12G 12KV 1250A Series Outdoor Pole mounted High Voltage Vacuum Circuit Breaker outdoor VCB

1)No.1 outdoor Vacuum circuit breaker factory 2)Export to many Asia and Africa countries 3)23 years' manufacture experience

 About us: 

       Our vacuum circuit breakers sell well all over the world, and are exported to Ethiopia, Malaysia, Thailand, Kenya, Mozambique, Congo, Rwanda, Pakistan, South Africa and so on. We have won a good reputation among customers at home and abroad. We will do our best to provide more high-quality products and services for you in the future! 

 

Trade Terms  

1.Payment: 1) 30% in advance, balanced 70% to be paid before dispatch.    2) L/C 

2.Port of loading: Ningbo,Wenzhou or Shanghai Port 

3.Discounts: offered based on order quantities 

4.Delivery time:10-30 days according to order quantities. 

 

Why Us? 

1. Quality assurance: All the products will go through lots of tests carefully before dispatch: Raw material check, Assemble test, Painting check, Nameplate check and routine tests. 

2. Competitive production capacity: monthly production more than 1500 sets 

3. Manufactuer's price: Factory direct sale, most competitive price. 

  

Technical Data 

 ZW8-12,ZW8-12G Series Outdoor High Vacuum Circuit Breaker  

1. Introduction 

ZW8-12 (G)-serial vacuum circuit breaker is rated voltage 12KV, three-phase AC 50Hz outdoor high voltage switchgear is mainly used to breaking Closing Rural power network , city network and small power system load current, overload current, short-circuit current . The product of the overall structure is box-type three-phase, three-phase vacuum interrupter placed in metal boxes, using SMC insulation material and inter-phase insulation and ground insulation, reliable performance, high dielectric strength.ZW8-12G is ZW8-12 a composite by circuit breaker and isolating switch, called the combination of circuit breakers, use for disconnect switchesThis series of operating mechanism for the CT23-type spring operating mechanism energy storage can be divided into two kinds of electric and manual. Mainly Technical parameters No Item Unit Data 6.3kA 12.5kA 20kA 1 Rated voltage kA 6.3 12 20 2 Rated current A 16 630(1250) 50 3 Rated short-circuit breaking current kA 16 12.5 50 4 Rated short circuit closed current (peak) kA 6.3 31.5 20 5 Rated peak withstand current kA   31.5   6 Rated short-circuit withstand current kA   12.5   7 Rated insulation level power frequency withstand voltages (dry)   42 Lightning impulse withstand voltage (peak) 75 8 Rated operating sequence   O-0.3s-CO-180s-CO  9 Mechanical life times 1000 10 Rated short-circuit breaking current breaking times times 20 11 Rated closing voltage of operation mechanism V 110,220 12 Rated opening voltage of operation mechanism V 110,220 13 Contact distance mm 11±1 14 Over stroke (compression length of contact spring) mm 3 (+1,-0.3) 15 Three phase closing and opening non-synchronism ms ≤2 16 Contact closing bounce duration ms ≤2 17 Average opening speed m/s 1.0±0.2 18 Average closing speed m/s 0.7±0.15 19 Opening time m/s 15-50 20 Closing time m/s 25-50 21   Resistance of main loop for each phase µΩ ≤0.06 22 Permitted accumulate wear-thickness of dynamic and static contact  mm ≤200

  

2. Other vacuum switches from our factory:

Hot sales ZW8-12kv,ZW8-12G 12KV 1250A Series Outdoor Pole mounted High Voltage Vacuum Circuit Breaker outdoor VCB