Quick Details
Description
- Place of Origin: Guangdong, China (Mainland)
- Brand Name: Powint
- Model Number: ZW28
- Type: High Voltage
- Poles Number: 3
- Color: Grey or blue
- Mechanical Life: 10000 Times
- Current: 630A
- Certificate: pccc
ZW28-12 series outdoor vacuum circuit breaker is high voltage outdoor VCB with rated voltage 12KV, alternative current 3 phases 50 Hz.
It is widely used for switch on/off the load current, over load current and short circuit current for rural grid, urban grid and small power system. Its structure is 3 phases in one enclosure, 3 phase arc extinguishing room is in metal enclosure. The insulation between phases and to ground is by SMC insulation material. It is with reliable function and good insulation.
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No.
|
Item
|
Unit
|
Data
|
|
1
|
Rated voltage
|
KV
|
12/17.5/24
|
|
2
|
Rated power frequency
|
Hz
|
50,60
|
|
3
|
Rated current
|
A
|
630,800,1000
|
|
4
|
Rated short-circuit breaking current
|
KA
|
12.5,16,20,25
|
|
5
|
Rated withstand current(peak)
|
KA
|
31.5,40,50,63
|
|
6
|
Rated short-time withstand current(4s)
|
KA
|
12.5,16,20,25
|
|
7
|
Rated short-circuit making current (peak)
|
KA
|
15,40,50,63
|
|
8
|
Mechanical life
|
Times
|
10000
|
|
9
|
Rated short-circuit breaking time
|
Times
|
30
|
|
10
|
1 min P.F withstand voltage-dry(phase to phase, to earth;across open contacts
|
KV
|
42/49,42/48,60
|
|
11
|
lighting impulse withstand voltage peak(phase to phase, to earth, across open contacts)
|
KV
|
75/85,95/110,125/145
|
|
12
|
P.F withstand voltage for secondary loop
|
KV
|
2
|
|
13
|
Net weight
|
KG
|
145,185
|
|
14
|
SF6 rated gage pressure
|
Mpa
|
"0"
|
Located in the Zhuhai Hi-tech Development Zone , Zhuhai Powint Electric Co., Ltd. is a national high-tech enterprise and demonstration base of creative industrialization in China. As a key private science and technology company of "high-tech manufacturing, high-tech industry, high-tech service industry and featured marine economy and eco-agriculture", POWINT has passed CQC verification and been granted the title of "Guangdong Trustworthy and Contract-valuing Enterprise".
Since establishment, we have adhered to the key value concept of 'making profit through wholehearted services' and devoted to facilitate the mission of Smart Grid. By upholding the principle of 'resting upon excellent product quality for survival' and 'pursuing constant technological leadership for development', we have developed into one of the biggest new high-tech enterprises in the R&D, manufacturing and marketing fields of distribution power automation terminals in China. Besides, we have maintained lasting working relationships with several hundreds of clients, including Beijing Soji, Schneider Electric China, Chint and Togmai. Chinese state grid companies and south grid companies etc.
There is a high-level R&D team in our company which has yielded over 10 national inventions and patents for utility models. And we have sold more than 600,000 control terminals with proprietary intellectual property rights to places all over China.
Moreover, our company has maintained extensive technological cooperation with Hunan University in researching small current grounding system protection, and with Xi'an High Voltage Apparatus Research Institute in studying the new type of high voltage intelligent switch.
We also possess inspection equipments and production equipments imported with original packaging from the U.S., South Korea and Japan, including integrated tester for EMC, test cabinet for temperature and humidity, oscilloscope, microcomputer relay protection calibrator, vibration testing machine, surface mounter system and AOI which have provided reliable hardware for the company's R&D and product manufacturing work. In 2006, our company was authenticated with ISO9001 and ISO14001 certifications.
With scientific management tool, solid technical power, advanced processing equipment, well-developed quality insurance system as well as excellent after-sale service, we have won wide recognition of the masses of users in high-voltage switch industry and utility industry and have developed into a brand in the field of distribution power automation terminal
