Chongqing 35kV pole mounted vacuum circuit breaker ZW7 high prototype permanent magnet mechanism

product overview

Vacuum circuit breakers are used in three-phase power systems with an AC frequency of 50Hz and a voltage of 40.5kV, for breaking and closing load currents, overload currents, and short-circuit currents. Equipped with a spring operated mechanism or electromagnetic operated mechanism, it can remotely control electric opening and closing, as well as manually store energy and manually open and close.

The main functions include:

a. Adopting vacuum arc extinguishing, with high breaking capacity, long electrical life, and mechanical life of 10000 times;

b. Simple structure, maintenance free, long maintenance free cycle;

c. Good insulation performance and strong anti pollution ability;

d. Can be equipped with spring or electromagnetic operating mechanism, reliable mechanical performance, and can be operated frequently; No fire and explosion hazards;

e. Equipped with a current transformer with an accuracy of 0.2 level, it can achieve three-phase interactive protection;

f. Equipped with a condensation controller, the circuit breaker can operate reliably at a certain temperature and humidity.

Environmental conditions for product use;

a. Surrounding air temperature: upper limit+40 ℃, lower limit -30 ℃

b. Altitude: ≤ 2000m (if higher altitude is required, the rated insulation level will be correspondingly increased)

c. Wind pressure: not exceeding 700Pa (equivalent to a wind speed of 34m/s);

d. Amplitude: Earthquake intensity of 8 degrees

e. Pollution level: Level III

f. Daily temperature difference: not exceeding 25 ℃

Product organization

Chongqing 35kV pole mounted vacuum circuit breaker ZW7 high prototype permanent magnet mechanism

Vacuum circuit breakers generally use spring operated mechanisms, which are operated by springs. Spring mechanism: The contact of the arc extinguishing chamber is driven by the tension of the spring, and the energy of the spring is generally supplied by the motor. In this type of mechanism, there are usually closing springs and opening springs. Permanent magnet mechanism: driven by the magnetic force of the magnet to move the contact of the arc extinguishing chamber, divided into monostable permanent magnet mechanism and bistable permanent magnet mechanism

Principle of vacuum circuit breaker system on permanent magnet column

There are many types of column circuit breakers, which mainly consist of the following parts: isolating switch, vacuum arc extinguishing chamber, control box, permanent magnet operating mechanism, transformer, etc.

The mainstream models of ZW7-40.5 high-voltage circuit breaker products are:

ZW7-40.5/1250-25,ZW7-40.5/1250-31.5,ZW7-40.5/1600-25,ZW7-40.5/1600-31.5

ZW7-40.5/2000-20,ZW7-40.5/2000-25,ZW7-40.5/2000-31.5

And corresponding products such as ZW7-40.5/t1250-25

Customer Ordering Notice

While ensuring the progressiveness, reliability and stability of the equipment, we should constantly improve the service quality, and ensure that customers can get good services from the aspects of delivery, commissioning and opening, equipment maintenance management, technical services, user technical training, etc. from the sale to the after-sales, so as to make customers satisfied and at ease.

Please specify the voltage, capacitor capacity, wiring method, altitude high voltage, installation location, and method when placing an order.

If customers have other special requirements, they can raise them when placing an order, and our company can provide you with great satisfaction

Conclusion:

Through the above research, we can find that pole mounted circuit breakers include multiple advanced technologies such as mechanical design, advanced language programming, computer measurement and control, and material science. With the continuous development and improvement of scientific and technological levels in these fields, research on pole mounted circuit breakers is constantly developing horizontally and vertically. At present, new technologies such as non-uniform longitudinal magnetic field arc extinguishing chamber technology and bistable permanent magnet operating mechanism have emerged, and their outstanding advantages and more stable operational reliability are becoming increasingly evident. They are increasingly recognized by the power sector and users, and their development prospects are very broad. I believe that with our joint efforts, more and more advanced equipment will be invested in the construction of smart grids, and China's power construction industry will definitely have a bright tomorrow!