• What are the requirements for the processing of cable supports?

    What are the requirements for the processing of cable supports?

    10-12-2018

    Answer: (1) The steel should be straight and there is no obvious distortion. The blanking error should be within 5mm. The incision should be free of curling and burrs; (2) The bracket shall be welded firmly, without obvious deformation, and the vertical clearance and design deviation between the cross braces shall not exceed 5 mm; (3) The metal bracket must be treated with anti-corrosion treatment...

  • Briefly describe the process of 10KV cross-linked cable heat-shrinking to make indoor terminal heads?

    Briefly describe the process of 10KV cross-linked cable heat-shrinking to make indoor terminal heads?

    03-12-2018

    Answer: (1) Preparation stage: Check whether the heat-shrinkable cable accessories are complete, whether the models match, check and confirm the cable with moisture, and check the cables. (2) Cut off the excess cable and determine the cable length according to the site conditions. (3) Stripping the sheath. (4) Solder the grounding wire and weld the grounding wire to the steel strip. (5) Fill the t...

  • For cable network and cable network automation

    For cable network and cable network automation

    26-11-2018

    Following the continuous implementation and application of power cables in the distribution network, the distribution network can be divided into cable networks and overhead networks (including overhead and cable hybrid networks). "The implementation status and compensation for the "Urban Medium and Low Voltage Distribution Network Transformation Skills Guide" also made specific requests for cable...

  • What are the installation steps for indoor and outdoor prefabricated terminals?

    What are the installation steps for indoor and outdoor prefabricated terminals?

    16-11-2018

    Answer: (1) Place the cable in place according to the predetermined position, fix and clean the surface, and peel off the outer sheath according to the instructions. If there is special need, the outer sheath stripping length can be adjusted, and the copper strip and the outer sheath are respectively led out. 2 sets of ground wire. (2) Take the required size from the outer sheath opening, cut off ...

  • What are the main properties of the insulation material of the power cable?

    What are the main properties of the insulation material of the power cable?

    10-11-2018

    A; should have the following main features: (1) high breakdown strength; (2) low dielectric loss; (3) A fairly high insulation resistance; (4) Excellent discharge resistance; (5) has a certain degree of softness and mechanical strength; (6) The insulation performance is stable for a long time.

  • What inspections should be carried out before the cable is laid?

    What inspections should be carried out before the cable is laid?

    01-11-2018

    Answer: (1) The bracket should be complete and the paint should be complete. (2) Cable type, voltage and specifications are in accordance with the design. (3) The cable insulation is good. When there is doubt about the sealing of the oil-paper cable, it should be judged by damp; the direct-buried cable and the small-bottom cable should pass the DC withstand voltage test; the oil sample of the oil-...

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