• Professional Manufacturer Of High Voltage Load Break Switch,Disconnect switch,Earth switch,etc.
  • China mining light
  • Products

12KV Vacuum Load Break Switch

  • Type: FZN21

  • 1. Load Break switch main technical parameters:
  • Model No.: FZN21-12D/T630-20
  • No Item Unit Data
    1 Rated voltage kV 12
    2 Rated frequency Hz 50
    3 Rated current A 630
    4 Rated active load
    breaking current    		 A 630
    5 Rated closed load breaking current A 630
    6 5% rated active load breaking current kA 31.5
    7 Rated cable charge breaking current A 10
    8 Rated idling transformer capacity kVA 1250
    9 1min power frequency withstand voltage kV 42/48
    10 Lighting surge withstand voltage kV 75/85
    11 Rated short-time withstand current Ka/S 20/4
    12 Rated peak value withstand current  kA 5
    13 Rated short-circuit making current kA 50
    14 Rated current breaking times time 10000
    15 Mechanical life time 10000
    16 Vacuum explosion chamber contact permission attrition thickness mm 2
  • 2. Combination electric appliance engineering parameter
  • Model No.: FZRN21-12D/T125-31.5
  • Item Unit Data
    Rated voltage KV 12
    Rated frequency Hz 50
    Fuse max rated current A 125
    Rated breaking ac current A 3150
    Fuse trigger switch on/off time Ms 40±5
    Rated short-circuit breaking current(Effective value) KA 31.5
    Rated short-circuit making current(Peak value) KA 50
    1 min power frequency withstand voltage: (vacuum fracture, phase to phase, phase to earth/Isolation fracture) KV 42/48
    Lightning surge withstand voltage: (vacuum fracture, phase to phase, phase to earth/Isolation fracture) KV 75/85
    Fuse ram output energy J 2-5