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
