12kv Indoor High Voltage Lbs-Fuse Combined Load Break Switch (VACFR12-12D)

1.General description     VACFR12-12D/T125-31.5KA type AC M.V. load switch-fuse combination units,is the VFKN12A-12D load switch and S*LAJ-12(XRNT*-10)M.V. current-limiting type fuse combination units together in the door M.V. switchgear.It can be a current breaking current;load switch breaking current,the fu

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1.General description
     VACFR12-12D/T125-31.5KA type AC M.V. load switch-fuse combination units,is the VFKN12A-12D load switch and S*LAJ-12(XRNT*-10)M.V. current-limiting type fuse combination units together in the door M.V. switchgear.It can be a current breaking current;load switch breaking current,the fuse short-circuit breaking current breaking joint working between the current and total short-circuit current of any over-current,fuse through its impact to load switches opening.
2.Main technical parameter
ItemUnitVACFR12-12D/T125-31.5
Rated voltagekV12
Rated frequencyHz50
Rated currentA125
1 min power frequency withstand voltagekVPhase to phase,to earth 42;isolating fracture 48
Lightning impulse withstand voltagekVPhase to phase,to earth 75;isolating fracture 85
Rated thermal stability currentkA20(4s)
Rated dynamic stability currentkA50
Rated making current(peak)kA50
Rated short circuit breaking current(expected value)kA31.5
Critical breaking current max.1(2).TkAAs per fuse characteristic curve
Min.breaking currentkAAs per fuse characteristic curve
Rated shift currentkA1.2
Max,breaking currentkA1.8
Breaking no-load transformer capacitykVA1250
Rated cable charged currentA10
Breaking times of rated power load currenttimes6000
Opening time of striker with load switchs<0.06
Thermal stability current of earth switchkA20(2s)
Dynamic stability current of earth switch(peak)kA50
Power voltage of motor operationVAC/DC 220
ItemUnitData
VACFR12-12D/T125-31.5
Moving contact travelmm200(+8,-2)
Inter-phase center distance(before mechanism stored energy)mm210±1.5
Moving contact opening distancemm40±2
Opening clearance between auxiliary contactmm≥150
Tri-phase closing/opening asynchronousms≤3
Just off speedm/s≥2.8
Just on speedm/s≥3.8
Distance between metal value to conduct tubemm≥125
Fracture distance of earth switchmm≥150
Main loop resistanceμΩ≤300
Max operating torqueN.m≤160
Note:1.Measure the distance between moving and fixed auxiliary contact,may measure the fixed arc contact after to conduct tube ejector nozzle end surface to add 24mm thickness.
2.While measuring main loop resistance of VFKRN12A-12D combination electrical appliance,fuse can be replaced by conduct rod whose resistance can be ignored.
3.Product show12kv Indoor High Voltage Lbs-Fuse Combination Load Break Switch (VACFR12-12D)
4.International fairs

12kv Indoor High Voltage Lbs-Fuse Combination Load Break Switch (VACFR12-12D)

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