12KV FN12-12 Indoor H.V. Load Break Switch (LBS)

Summary

It is a three phase H.V. switch equipment of 12KV, 50Hz for breaking or closing load current., no-load transformer cable charging current and closing short-circuit current. The load switch with earth switch can bear short-circuit current.
It is made up of FN12-12D load switch and S()LAJ-12(XRNT()-10) H.V. current-limiting fuse box. It can break any current, load switch breaking working current and fuse box breaking short-circuit current, jointly 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 load and short-circuit. Because the switch with fuse protecting transformer etc more reliably than circuit breaker. It is especialy suitable for ring network clouble radial distribution and package substation.

Standard
a. GB3804-90 <<3-63KV AC H.V load switch>>.
b. GB16926-1997 <<High-voltage alternating current switch-fuse combinations>>(eqv, IEC62271-2002).
c. GB1995-89 <<AC H.V isolate switch and earth switch>>.

Service Condition
A. The ambient air temperature: Max.: +40 °C. Min: -10 °C.
B. The altitude ≤ 1000m.
C. The relatire humidity of air. daily 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 Ⅱ.
If requirements are not mentioned above, users can fix them with the manufacturer.

Technical Parameter and Performances

Installation diagram

Packing