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Circuit–breaker used ceramic vacuum interrupter

  • Type: TD-12/630-20(BGE610)

  • Vacuum Tube main technique parameter
  • Parameter name Unit Value
    Rated voltage kV 12
    Rated normal current A 630
    Rated frequency Hz 50
    Rated short-circuit breaking current kA 20
    Rated short-circuit making current kA 50
    Rated peak withstand current kA 50
    Rated short-time withstand current kA 20
    Rated short-circuit continuous time S 4
    Rated single capacitor unit breaking current A 630
    Rated back to back capacitor unit breaking current A 400
    Rated short-time (1 min) frequency withstand voltage kV 42
    Rated contact pressure time-limit loop resistive µΩ ≤30
    Rated short-circuit breaking current breaking times   30
    Rated lightning impulse withstand voltage V 75
    Mechanical life   10000
    Contact automatic N 80±30
    Force required to hold contacts open at full stroke N 140±40
    Contact-wear allowance thickness mm 3
    Internal gas pressure Pa ≤1.33×10-3
    Shelf life   20