DFW-12 type High Voltage Cable Distribution Box is a kind of connection and tapping products for power cables. The product adopts SF6 load switch or vacuum circuit breaker as the control switch and has strong ability of breaks under rated active load short-circuit closing current. In addition, it can be equipped with lightning arrester and ground fault indicator according to user requirements.
u Fully insulated and sealed, maintenance-free. Guarantee personal safety.
u Strong environmental adaptability and flexible combination.
u Load switch or vacuum circuit breaker can be installed on each ring connection line. Any branch circuit can be freely exited and put into operation without affecting other ring network loops.
u Fuse can be attached to the load switch to assure power continuity of non-faulty sub-loops.
u Adoption of the flood-proof and touchable cable head greatly improves the reliability of power supply.
u Flexibility in line operation, maintenance and overhaul can be achieved by any combination of load switches or circuit breakers and cable heads.
u Temperature: Min -30℃~Max+40℃;
u Relative humidity: Daily average ≦95%; Monthly average≦90%;
u Altitude: ≦1000m;
u Shock level: Horizontal acceleration 0.4m/s 2，Vertical acceleration 0.15m/s2；
u Installation location: The place with no severe impact, serious pollution and chemical corrosion, no conductive dust and explosion risk.
When the conditions of use exceed the above range, the user shall negotiate with us to determine the allowable range or take corresponding supplementary technical measures.
Rated short-time withstand current
Rated peak withstand current
Power frequency withstand voltage( valid value)
Lightning impulse withstand voltage
Secondary circuit power frequency withstand voltage
Negative DC withstand voltage
Number of rated breaking current
Rated charging breaking current
Rated circuit-closed breaking current
SF6 gas pressure
SF6 gas leak
Maximum cross-sectional area of the cable