Language: 熔断器 high voltage fuse fusibles de alta tensión Предохранитель высоковольтный الجهد العالي فيوز
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H.V ac vacuum load switch

It is a three phase H.V switch equipment of 12kV.50Hz for breaking or closing load current.no-load transformer cablecharging current and closing shortcircuit current.The load switch with earth switch can bear short-circuit current.

 H.V ac vacuum load switch

  • AC H.V Vacuum Load Switch
  • Summary
  • It is a three phase H.V switch equipment of 12kV.50Hz for breaking or closing load current.no-load transformer cablecharging current and closing shortcircuit current.The load switch with earth switch can bear short-circuit current.
  • It is made up of FNl2-12D load switch and S口LAJ-12(XRNT口-10)H.V current-liInitirlg fuse box.It can break any current,load switch breaking working current and fuse box breaking short-circuit current.joinfly breaking any current between short-circuit current. meantime.fuse box make the switch off of with the striker.
  • Application
  • It is used in the ring network city distribution and industrial equipment of 12kV and three-phase AC 50Hz to cortrol loadand short-circuit. because the switch with fuse protecting transformer etc more reliably than circuit breaker.it is especialy suitablefor ring network clouble radial distribution and package substation.
  • Standard
  • a. GB3804-90(3~63kV AC H.V load switch).
  • b. GBXXXX-XX(AC H.V load switch with fuse box)(the same IEC420-1990).
  • C. GBl995-89(AC H.V isolator switch and earth switch).
  • Service condition
  • A. The ambient air temperature:Max.:+40℃.Min.:-10℃.
  • B. The altitude≤l000m.
  • C. The relatire humidity of air.daffy average≤90%.monthly average≤95%.
  • D. The ambient air should not be obviously polluted by corrosivity or the flammability gas and geam.etc.
  • E. Without frequent shake.
  • F. Enviroment degree:grade ll.
  • If requirements are not mentioned above,users can fix them with the manufacturer.
  • Type and meaning

Mechanical characteristic parameter

 

  • Note:
  • 1. When measuring auxiliary contact distance. Add 24mm static contact to the conducting pipe.
  • 2. When measuring FN12 - 12(R)D main loop resistance, the fuse box can be replaced by the conducting bar ignoring its resistance.