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          The quality of survival, technology and development
          Quality for survival, technology for development
          DFW-12 type High Voltage Cable Distribution Box
          DFW-12 type High Voltage Cable Distribution Box
          DFW-12 type High Voltage Cable Distribution Box

          Description:

          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.

          Features:

          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.

          Using environment:

          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.

          Technical Parameters:

          Items

          Unit

          Value

          Rated voltage

          kV

          12

          Rated current

          A

          630

          Rated short-time withstand current

          kA/4s

          20

          Rated peak withstand current

          kA

          50

          Power frequency withstand voltage( valid value)

          kV/1min

          42

          Lightning impulse withstand voltage

          kV

          75

          Secondary circuit power frequency withstand voltage

          kV/1min

          2

          Negative DC withstand voltage

          kV/15min

          52

          Partial Discharge

          PC

          20

          Number of rated breaking current

          time

          100

          Rated charging breaking current

          A

          10

          Rated circuit-closed breaking current

          A

          630

          Mechanical endurance

          time

          5000/2000

          IP grade

           

          IP33

          SF6 gas pressure

          Bar

          0.45

          SF6 gas leak

           

          0.05%/year

          Maximum cross-sectional area of the cable

          mm2

          400


          Product details
          TG网