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----OPEN GROUP HOLDING LTD. is located in Liushi, Wenzhou, Zhejiang Province, China. It faces the 104 National Highway that run-through Zhemin Economic Zone, close to Qili Harbor and Wenzhou Airport on the south, close to the scenic spot Yandang Mountain on the north.

Quality assurance and customer satisfaction lead Open Group's top belief. OPEN GROUP HOLDING LTD. is one of the most professional manufacturers producing low-voltage and high-voltage electrical products, power equipment, cables & wires, etc. Through last 10 years' development,OPEN GROUP HOLDING LTD. has grown up as one of the biggest group companies in China, and the products range includes lightings, and lamp. We have over fifty member factories for the products above, and our products include 1,500 series and more than 15,000 industrial components.

We have precious experiences in exporting our products to the Southeast Asian, Australian, European and the American markets. Our products are well-known greatly due to high quality and reasonable price. After more than 10 years' promotion and service in the world, our products are enjoying a great share in the international market.

To present our customer more considerate service, OPEN GROUP HOLDING LTD. has modernized our production equipment, enhanced production technology and management mode. To form designing, producing, quality checking, selling as an organic whole, from quality control of the input of the raw materials and feedback of the after-sale service, etc., we have introduced TQM and other advanced producing methods to ensure the interest of our customers.

The 21st century is the era of the knowledge economy, full of the fierce competitions of technology and managing mode, but meanwhile, we can tell that there are also so many opportunities to get mutual benefits. Welcome domestic and international friends to cooperate cordially with OPEN GROUP HOLDING LTD. We believe with our best efforts, we can create the prosperity and development for both of our business.

 
 Smallclass HV fuse(20)
     Insulator
     Transducer
     Contact box Type
     Bushing Series
     Insulation tube Series
     Pull pole Series
 Smallclass cable wire(20)
  | Power Transmission & Distribution Equipment >>  Voltage vacuum circuit >> AC Outdoor HV Vacuum Breaker >> ZW7-40.5、ZW30-40.5
 

 

Mostly purpose
the zw7-40.5.zw30h-40.5 outdoor hv electrical equipment on three-phase ac50hz it is used for controller and protecting 24~40.5kv transmission and distribution system ,it can also be used for network interconnecting breaker and switching capacitor bank. matching with segmentation controllers and automatic circult reclosers ,the product realizes intellectualized segmentation and reclose control of power systems ,annexing a current transformer inside,it provides measurement and protection.matching with spring or electromagnetism opereting mechanisms.the breaker has high reliability of mechanical property and can be operated frequently,it has no burning and explosion hazard,the breaker conforms to standards GB1984-1989 AC HVbreaker and IEC56,IEC62271-100HV AC breaker,the breaker’s main feature:excellent brek performance,long mechanical life up to 10000 times,simple structure,non maintenance,excellent insuiating property and strong anti soll performance.according to customer’s it can install current transformers inside.the measuring accuracy will be level of 0.2, and it realizes three-phase interaction protection
Technic Parameter
item
unit
parameter
rated voltage
KV
15
24
36
40.5
rated insulation level
1minpower frequency withstand coltage
50
60
70
95
lightning impulse withstand voltage(peak &#118alue)
110
150
170
185
rated current
a
630/1000/1250/1600/2000
rated short circult breaking current
ka
12.5/16/20/25/31.5
rated operating sequence
o-0.3s-co-180s-co
breaking current frequency under rated shout circlt
times
12
rated short current switching current (peak &#118alue)
ka
50,63,80
rated peak &#118alue withstand current
rated short time withstand current
ka
20,25,31.5
average switch off speed
ms
1.5±0.20
1.5±0.20
1.5±0.20
1.5±0.20
average switch on speed
0.7±0.20
0.7±0.20
0.7±0.20
0.7±0.20
contact closing bounce time
≤2
≤2
≤2
≤2
three-phase switching on or off non-synchroneity
≤2
≤2
≤2
≤2
switch-on time
≤145
≤145
≤150
≤150
switch-off time
≤70
≤70
≤70
≤70
mechanism life
times
10000
rated operating voltage and auxiliary circult reted voltage
v
dc220,110,48,24
ac220,110,48,24
each phase loop dc resistance(not include instrument transformers)
μΩ
≤100
each phase loop dc resistance
mm
3
weight
kg
400
600
750
800
order the beard know
1、when order products,please offer product model;
2、name and quantity and choose related functional configuration based on operating requirements
3、if you have special requirements,please consult with us and contract with our company.
Externality & Build in Dimension

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