• Professional Manufacturer Of Vacuum interrupter,Vacuum tube etc.
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Load switch used vacuum interrupter

  • Type: TF-40.5/1250(BGE730)

  • Vacuum Tube main technique parameter
  • Parameter name Unit Value
    Rated voltage kV 40.5
    Rated normal current A 1250
    Rated frequency Hz 50
    Rated short-time (1 min) frequency withstand voltage kA 70
    Rated lightning impulse withstand voltage kA  
    Rated short-time withstand current kA 25
    Rated short-circuit continuous time S 4
    Rated peak withstand current kA 63
    Rated short-circuit making current kA 63
    Rated active load breaking current A 1250
    Rated loop-locked breaking current A 1250
    Rated electric cable be charged breaking current A 10
    Mechanical life   10000
    Contact automatic N 80±30
    Force required to hold contacts open at full stroke N 140±40
    Rated contact pressure time-limit loop resistive µΩ ≤30
    Contact-wear allowance thickness Mm 3
    Internal gas pressure Pa ≤1.33×10-3
    Shelf life   20