Qingdao Hengfengyou Electrical Engineering Co., Ltd.
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Hot Sale Model 12kv Outdoor Magnet Vacuum Middle Voltage High Voltage Circuit Breaker, Factory Direct Supply
Product introduction
ZW27-12 outdoor AC high voltage vacuum circuit breaker
ZW27-12 outdoor AC high voltage vacuum circuit breaker is mainly used to break and close load current, over-load current and short-circuit current in outdoor 12kV three-phase alternating current 50Hz power system, also suitable for occasion with frequent operations. The product suitable for substations, industrial and mining establishments, rural power network and occasions with frequent operation to protect and control.
Manual,electric closing,opening mechanism
electric energy storage, electric closing & opening, manual energy storage, manual closing & opening. Clear energy storage stop mark outside, as well as closing & opening estate position.
Switch crust
- good causticity durability: adopt molding pressure foundry aluminum alloy.
- stainless steel switch crust exploited up to now.
Manual, electric closing, opening mechanism
- electric energy storage, electric closing & opening, manual energy storage, manual closing& opening. Clear energy storage stop mark outside, as well as closing& opening estate position.
Spring mechanism
- improvement of the 20A mechanism. More miniature, credible performance, mechanism life reaching twenty thousand times.
Main Technical Parameter
About HFY Electrical Engineering
Qingdao HengFengYou Electrical Engineering Co. LTD. is a Chinese leading manufacturer and supplier in electricity transmission and distribution industry.
With 30 years of competition and development in China, by now HFY Electrical Engineering has 6 wholly-owned subsidiaries, 50 senior technicians, 350 employees, established sales network and customer service team. From research and development, manufacturing to the final project engineering, HFY provides better solution to clients than others.
Our main market covers medium voltage, high voltage and ultra-high voltage power distribution. In the past few years, we had annual output of 100 million US dollars. The best-seller of our products is oil-immersed transformer series, which are designed with efficiency, energy saving and performance in mind. Our other products are also well known and often seen in projects, such as dry-type transformer series, switchgear cabinet, box-type substation, high-voltage vacuum circuit breaker on columns.
With regard to contribution in this industry, HFY Electrical Engineering keeps close and long-term strategical partnership with Schneider, ABB, SIMENS. In the near future, we plan to build an intelligent workshop to produce 100,000 transformers every year so as to provide our customers with competitive and 'green' products.
Major Technical Parameters are shown below:
Note: Due to continuous product improvement, the dimensions provided in this sample are for reference only. If necessary, our company can design and produce according to user requirements. Please contact the company in time.
| Rated voltage | 12 kV |
| Rated current | 630/1,250 A |
| Rated frequency | 50/60 Hz |
| Rated short-duration (1 min) power frequency withstand voltage | 42/48kV |
| Rated short-circuit breaking current | 20/25 kA |
| Rated short-duration withstand current (4s) | 20/25 kA |
| Rated lightning impluse withstand voltage(to earth/break) | 75/85 kV |
| Rated short-circuit making current (peak value) | 50/63 kA |
| Rated peak withstand current | 50/60 kA |
| Rated short-circuit current breaking times | 30 times |
| Mechanical service life of vacuum circuit breaker | 10,000 times |
| CT transformation ratio | 600/1 or 1,250/1 |
| Rated operating sequence of circuit breaker | O-0.3s-CO-180s-CO |
| Total weight | 80+25 kg |
· Order instructions:
1. The customer needs provide main parameters of the transformer (input and output voltage, capacity, loss, etc.)
2. Other customer requirements