Cable Distribution Box with SF6 Load Switch

Adoption of three-position SF6 load switch with ingenious design of left/right wire incoming and outgoing, it enjoys compact structure and strong cable configuration function
Product description

Model meaning


Product overview

Adoption of three-position SF6 load switch with ingenious design of left/right wire incoming and outgoing, it enjoys compact structure and strong cable configuration function, incoming / outgoing wire as many as 8 circuits. It is the ideal equipment for renovation of urban power grid, not only remains the advantages of traditional distribution boxes, but also possesses some merits of ring main units. It is featured with small size, maintenance free, good technological economy, high reliability, simple installation and convenient operation. Cable distribution box with SF load switch has three chambers in the box, one of the three chambers is hermetic with slightly pressurized SF6 gas inside, has one group of load switch at least, whose operating mechanism is set in the operating and driving chamber. There are cable terminal wires and cable terminals in the cable chamber, the cable terminals are connected with the loads. Load switch in the hermetically sealed chamber is of rotary moving/static contact type, each load switch has three layers of symmetrical sector fixed on the rotating shaft. Cables in the cable chamber are arranged in groups, three phases in one group, the three cable terminals are arranged in parallel and downwards obliquely, each cable terminal is vertical to the cable terminal wire, and three cable terminal wires are co-equal. The hermetic chamber is equipped with pressure relief pipeline. 


Environmental conditions

● Ambient temperature: -30℃~+40℃;

● Wind speed: 34m/s (not higher than 700Pa);

● Relative humidity: daily average value shall not exceed 95%; monthly average value shall not exceed 95%;

● Quakeproof level: horizontal acceleration not exceed 0.4m/s; vertical acceleration not exceed 0.15m/s;

● Degrees of inclination of the installation site: no more than 3°;

● Installation environment: free of obvious pollution of corrosive or flammable gas or steam. No severe vibration in the installation site.


Technical parameters

Rated voltage 12KV
Rated current 630A
Rated short-time withstand current (2s) 20KA
 Rated short-circuit making current (peak) 50KA
Rated transfer current 2000A
Lightning impulse voltage 85KV
Power frequency withstand voltage  48KV
Mechanical life 2000 times
Rated pressure of SF6 gas  0.03MPa
Annual leakage rate of SF6 gas ≤0.5%


Structural drawing

If you the cable distribution box with sf6 load switch caters to your requirement, welcome to buy the high quality equipment made in China from us. As one of the leading manufacturers and suppliers of various industrial electrical products in China, we won't let your down.

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