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The raising technology of high voltage vacuum circuit breakers (that could replace SF6…)

Home / Technical Articles / The raising technology of high voltage vacuum circuit breakers (that could replace SF6…)

Why vacuum circuit breakers in HV?

Because of great harmfulness of greenhouse effect, SF6 gas has to be limited. It is necessary to develop high voltage vacuum circuit breaker to replace SF6 circuit breaker. Insulating structure and arc-characteristics of vacuum interrupter are the key to development of high voltage vacuum circuit breakers.

High voltage vacuum circuit breakers - The raising technology
High voltage vacuum circuit breakers - The raising technology (photo credit: J. BRUCHER, S. GIERE, C. WATIER, A. HESSENMĂśLLER and P.E. NIELSEN at Siemens)

Let’s start this article with brief history, then device implications and differences between Vacuum / SF6 and finally 245kV prototype and some example specifications:

Contents:

  1. History of HV vacuum breakers
  2. Differences between SF6 and Vacuum (device implications)
    1. Dielectric performances
    2. Contact Stroke
    3. Internal design
    4. Capacitive switching performance
  3. 245kv vacuum circuit breaker design prototype
  4. HV vacuum circuit breaker specifications

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Ali Sepehri - Author at EEP-Electrical Engineering Portal

Ali Sepehri

Switchgear sales engineer and project manager with more than 15 year experience in pars switch company. Design, test, engineering and analyzing of medium/high voltage circuit breaker and disconnector switches.
Profile: Ali Sepehri

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