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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 >> ZW□-24(27)
 
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Mostly purpose
ZW□-24(27)type ac outdoor vacuum circult breaker is a new practical product deceloped by our company with several kinds of patent it is mainly applied for switching on or off of load current,overload current and short-circult current of power systems .in ac three-phase outdoor power distribution net with rated voltage of 24 kv and frequency of 50hz,it is used for protection and control in power substation and enterprise’s power distribution system,and is more applicable for rural power grids and frequent operation occassion.the product and its supporting control equipment can meet the automatization requirement of power distribution system and also act the traditional recloser’s function reliably and efficiently .

technic parameter
voltage ratings rated contact stroke
item
unit
parameter
rated frequency
hz
50/60
rated voltage
KV
24
1minpower frequency withstand voltage
dry
KV
60
wet
50
lightning impulse withstand voltage
KV
125
current ratings
rated current
A
630
circult resistance at lowest rated contact force
μΩ
≤80
rated short circult breaking current
KA
16
rated short time withstand current
ka
16
rated short circult duration time
s
3
rated peak &#118alue withstand current
KA
40
rated short current switching current
ka
40
rated operating sequence
o-t1-co-t2-co-t3-co-(lock)

Externality & Build in Dimension

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