Analyse und Behandlung häufiger Fehler Ursachen von Vakuum -Leistungsschalter

Vacuum circuit breakers are named because the insulating medium of the arc extinguishing medium and the contact gap after arc extinguishing are both high vacuum; they have the advantages of small size, light weight, suitable for frequent operation, and arc extinguishing without maintenance, and are widely used in distribution networks. Vacuum circuit breaker technical standards Vacuum circuit breakers have been vigorously developed in my country in the past decade and are still in the ascendant. Products have developed from several varieties of ZN1~ZN5 in the past to more than dozens of models and varieties now, with a rated current of 5000A and a breaking current of 50kA, and have developed to a voltage of 35kV.

Vacuum circuit breakers are the main switching equipment in power systems. The role of vacuum circuit breakers in power systems is: when the power system is operating normally, vacuum circuit breakers can cut off and connect the no-load and load current of lines and various electrical equipment; when a fault occurs in the power system, vacuum circuit breakers and relay protection cooperate to quickly cut off the fault current to prevent the expansion of the scope of the accident.

 Main components of vacuum circuit breakergreenwatt@cngreenwatt.com

1. Bracket: The frame for installing the functional components of the circuit breaker.

2. Vacuum arc chamber: It is the arc extinguishing element of the vacuum circuit breaker.

3. Conductive circuit: The current channel formed by connecting the moving end and the static end of the arc extinguishing chamber.

4. Transmission mechanism: Realize the closing and opening operation of the arc extinguishing chamber.

5. Insulation support: The insulating support connects the functional components to meet the insulation requirements of the circuit breaker.

6. Operating mechanism: It is the power drive device of the vacuum circuit breaker. 

The basic requirements of the vacuum circuit breaker for the operating mechanism are as follows: 

a. There must be sufficient closing output power; ensure that the vacuum circuit breaker has the ability to close the short-circuit fault current.

b. The output characteristics of the mechanism should match the reaction force characteristics of the vacuum circuit breaker as much as possible.

c. The vacuum switch has sufficient dynamic stability.

d. It must ensure that it can open normally at 65%~12 opening voltage, and cannot open at 30% rated operating voltage.

e. The operating mechanism should have the function of free tripping.

f. It has electric or manual operation function.

The company has a research and development team as well as the MCCB production field, and the use of production equipment: Short current test machine，overload test machine， Medium-speed punch press machine and a series of supporting machinery composed of modern assembly line. We take environmental protection, safety (flame retardant) as the design premise, . Over the years, thanks to the support and love of new and old customers at home and abroad. If you are interested in our products or have any questions, please feel free to email us.