- 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.
