The IEEE C37.59-2018 describes medium-voltage voltage categories as 600V to 69 kV. Metal-clad switchgear assemblies, indoor or outdoor, rated above 1000 volts AC, incorporating draw-out medium voltage power circuit breakers and/or load interrupter switches, are described in the NEMA SG 5 standards.
Rated Characteristics / Rated Frequency The rated values for HV switchgear are 50. Hz and 60 Hz. Other values are possible, for example 16 2/3 Hz and 25 Hz for railways applications. Rated Characteristics / Rated Frequency.
FKN12-12D/630-20 air high voltage load break switch with fuse is a three phase high voltage switch equipment of 12kv, 50hz for breaking or closing load current, loop closed current. No-load transformer and cable charging electric current,close short circuit current. The load switch with earthing switch can bear short-circuit current. FKN12-12RD/125-31.5 air high voltage load break switch-fuse combination unit is made of FKN2-12D load switch and S*LAJ-12(XRNT*-12) H.V current-limiting fuse box. I can be areliable short-circuit breaking current up to any current: breaking work load switch current, fuse short-circult breaking current breaking joint working between the current and the full shor-circuit current in any over-current, while fuse allows, through its impact load switch sub-gate.
Custom Indoor AC Hv Vacuum Load Switch can be customized to fit your specific application requirements while reducing maintenance costs and improving reliability.
Gear is configured to meet any system or application need
Switches and fuses never need adjusting, programming, or dielectric testing
Utility-grade design withstands time and the elements
Preassembled and simpler construction requirements
Lower up-front and maintenance costs than metal-clad switchgear
Fuses offer faster fuse-clearing time and reduce system stress compared to circuit breakers