• page_banner

Product

China wholesale Sf6 Interrupter Factory – Vacuum interrupter for MV VCB(ceramic shell, Rated voltage: 7.2kV-12kV) – Shone


Product Detail

Product Tags

Related Video

Feedback (2)

We not only will try our greatest to offer you excellent services to each individual client, but also are ready to receive any suggestion offered by our buyers for Indoor Vacuum Circuit Breaker, Vacuum Switch, Load Breaker, Our corporation maintains risk-free enterprise combined by truth and honesty to maintain long-term interactions with our clients.
China wholesale Sf6 Interrupter Factory – Vacuum interrupter for MV VCB(ceramic shell, Rated voltage: 7.2kV-12kV) – Shone Detail:

Brief description of the product:

Current chopping in vacuum circuit breaker depends on the vapour pressure and the electron emission properties of the contact material. The chopping level is also influenced by the thermal conductivity–lower the thermal conductivity, lower is the chopping level.
It is possible to reduce the current level at which chopping occurs by selecting a contact material which gives out sufficient metal vapour to allow the current to come to a very low value or zero value, but this is rarely done as it affects the dielectric strength adversely.
High insulating strength: In comparison to various other insulating media used in circuit breaker vacuum is a superior dielectric medium. It is better than all other media except air and SF6, which are employed at high pressure.
When an arc is opened by moving apart the contacts in a vacuum, an interruption occurs at the first current zero. With the arc interruption, their dielectric strength increases up to a rate of thousands time as compared to other breakers.

feq
ssqdw

Pay attention

(1) Measures to prevent overvoltage. Vacuum circuit breaker has good breaking performance. Sometimes when breaking inductive load, high overvoltage is generated at both ends of inductance due to rapid change of loop current. Therefore, for dry-type transformers and other equipment with low impulse voltage resistance, it is best to install overvoltage protection devices, such as metal oxide arresters.
(2) Strictly control the load current.
The overload capacity of vacuum circuit breaker is poor. Since thermal insulation is formed between the contact and the shell of the vacuum circuit breaker, the heat on the contact and the conductive rod is mainly transmitted along the conductive rod. In order to make the operating temperature of the vacuum circuit breaker not exceed the allowable value, its working current must be strictly limited to be lower than the rated current.


Product detail pictures:

China wholesale Sf6 Interrupter Factory –  Vacuum interrupter for MV VCB(ceramic shell, Rated voltage: 7.2kV-12kV) – Shone detail pictures


Related Product Guide:

We insist on the principle of development of 'High quality, Efficiency, Sincerity and Down-to-earth working approach' to provide you with excellent service of processing for China wholesale Sf6 Interrupter Factory – Vacuum interrupter for MV VCB(ceramic shell, Rated voltage: 7.2kV-12kV) – Shone , The product will supply to all over the world, such as: Uganda, South Africa, New Zealand, On today, we've got customers from all over the world, including USA, Russia, Spain, Italy, Singapore, Malaysia, Thailand, Poland, Iran and Iraq. The mission of our company is to deliver the highest quality products with best price. We've been looking forward to doing business with you!
  • Cooperate with you every time is very successful, very happy. Hope that we can have more cooperation!
    5 Stars By Matthew Tobias from Romania - 2017.10.25 15:53
    High Quality, High Efficiency, Creative and Integrity, worth having long-term cooperation! Looking forward to the future cooperation!
    5 Stars By Kim from Ethiopia - 2017.12.31 14:53
    Write your message here and send it to us