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    Hello! welcomeZhejiang Xikai Electric Co. , Ltd.
    Zhejiang Xikai Electric Co. , Ltd.
    Contact
    Zhejiang Xikai Electric Co. , Ltd.
    Mailbox:wzxikai@wzxikai.com
    Tel:+86 577 61666 016
    address:No.271, Weishiqi Road, Yueqing Economic Development Insuatrial Zone, Yueqing, Zhejiang.

    product list

    Indoor high voltage load switch
    14/5000 Indoor vacuum circuit breaker
    Outdoor vacuum circuit breaker
    Outdoor high voltage load switch
    Outdoor high voltage disconnector
    Outdoor drop fuse
    High voltage current limiting fuse series
    High voltage complete set
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    Product Center

      • FZN21 Series Indoor Vacuum Load Break Switch

      FZN21 Series Indoor Vacuum Load Break Switch

      FZN21 series indoor M.V. Vacuum load break switch and its fuse combination are applied for 12kV, 24kV and 40.5kV, 50/60Hz power systems. It widely use for industrial and mining area, to cooperate for Ring Main Units and Terminals. It can distribute, control and protect the electric power. This product fulfill with the requirements of following standards:IEC 60265-1/FDIS,IEC 60420 , GB16926 , GB3804 . This model of switch was combined with frame, isolator, Vacuum interrupter, earth switch, spring mechanism. It has good breaking capacity, safety, and long electrical endurance. This model can break on load current, over load current, and after cooperate with XRNT fuse, that can break short circuit current and protect the equipment work under loss phase. There are visible fracture. There is interlock between isolator, V-LBS and ES, which can forbidden mis-operation.

      Technical Information

      Technical Specification

       

       

       

       

      Rated voltage

      kV

      12

      24

      40.5

      Rated current

      A

      630

      630

      630

      Rated power frequency

      Hz

      50/60

      50/60

      50/60

      Short circuit making capacity

      kA Peak.

      50

      31.5

      31.5

      Peak withstand current

      kA Peak.

      50

      50

      50

      Short time current

      kA eff.

       

       

       

      1Sec.

       

      25

       

       

      3Sec.

       

      20

      20

      20

      Max. breaking capacity in co-operation with fuses IEC 62271-105(IEC 420 1990-11)

      A

      2000

      2000

      1700

      Max. fuse current(XRNT Fuse)

      A

      200

      200

      100

      Power frequency withstand voltage 50Hz 1 min,:

       

       

       

       

      - To earth and between poles

      kV

      42

      65

      95

      - Across isolating distance

      kV

      48

      79

      110

      Impulse withstand voltage 1.2/50μ s:

       

       

       

       

      - To earth and between poles

      kV

      75

      125

      185

      - Across isolating distance

      kV

      85

      145

      215

      Mechanism Endurance

       

       

       

       

      -Vauum interrupter

      cycles

      10000

      10000

      10000

      -Main switch and Earth Switch

      cycles

      2000

      2000

      2000


      Overall and installation dimensions


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