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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 >> ZW37H-40.5
 
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Mostly purpose
zw37h-40.5type outdoor av high-voltage vacuum circult breaker.an ac three-phase 50hz outdoor high-voltage switching device with rated voltage of 40.5kv,is mainly breaking and closing of load current,overload current and short-circult current in power system.
it is applied for protection and control in substation,industrial and mining enterprise and urban and rural power network and automatic power distribution in urban and rural power network
the product has passed the overrall type test by beijing power science research institute and complies with following standards:
gb/t1984《high-voltage av circult breaker》
gb/t11022《commom technical requirement for standard of high-voltage switching and control equipemnt》
d1402《technical conditions for ordering ac high-voltage circult breaker》

Features
miniaturized vacuum arc-extinguishing chamer:maximum reliability,long service life,enclosed with epoxy resin;
epoxy resin enclosure:
it complies with environmental protection requirement,it owns widely validated outdoor performance and resistance to ozone and ultraviolet radiation,it is firm light hard to be crisp and easy for tranportation:
reasonable structure design:
epoxy resin bushing suport porcelator is with wpoxy APG cast vacuum arc-exitingunishing chamber on upper size,support porcelan insulator on lower side and insulating pull rod and linkage rod inside, hte three phase of support porcelain insulator are installed on one commom mechanism box,and the moving end of arc-extinguishing chamber is connected with output axis of mechanism through insulating pull rod;
safe and reliable,simple debugging and maintenance:
the insulating pull rod and output axis of mechanism is connected vertically and moving straightly,it is safe and reliable and is easy for debugging and maintenance, it is with automatic distribution interface,which can be wasily equipped with remote controlled auxiliary contact and meets the automatization requirement of power distribution;also it is with hiogh performance as the rated current reaches 2000a and the rated short-circult breaking current reaches 31.5ka.
Technic parameter
item
unit
parameter
rated voltage
kv
40.5
rated current
a
630,1250,1600,2000
rated short circult breaking current
ka
20
25
31.5
rated short current switching current (peak &#118alue)
ka
50
63
80
rated short time withstand current
ka
20
25
31.5
rated peak &#118alue withstand current
ka
50
63
80
rated short circult duration time
2
4
rated insulation level
1minpower frequency withstand coltage
kv
95
lightning impulse withstand voltage(peak &#118alue)
185
rated operating sequence
o-0.3s-co-180s-co
breaking current frequency under rated shout circlt
20
mechanism life
10000
rated operating voltage
v
220(dc,ac)
remark:modify the coefficent according to corresponding insuiation level when the applied altitude is more than 1000m.

Externality & Build in Dimension

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