1, the conductor connecting conductor connection requirements of low resistance and sufficient mechanical strength, the joint cannot appear sharp. Low voltage cable conductors used are crimping, press attention:
(1) to select the appropriate electrical conductivity and mechanical strength of the conductor connection pipe;
(2) the inner diameter of the pressure connecting pipe is connected with the outside diameter of the connecting wire core to take 0.8 to 1.4mm;
(3) after the joint pressure resistance value should be less than 1.2 times the cross-section of conductor, copper conductor joint tensile strength of not less than 60N/mm2;
(4) the outer surface of the conductor and the outer surface of the conductor are coated with conductive adhesive, and the oxide film is damaged by the steel wire brush;
(5) the connecting tube, the wire core conductor on the sharp corners, edges, with a file or sandpaper smooth.
2, the inner shielding semiconductor processing where the cable body having an inner shielding layer, in the production of connectors must be recovered pressure pipe joint part of the conductor shielding layer, cable semi conductive shielding to set aside a part of, so as to make the connection pipe connection head can shield connected with each other, make semiconductor continuity, so that the joint over the uniform distribution of the electric field.
3, semiconductor shielding the semiconductor shielding cable and cable insulation external uniform electric field of semi conductive material, with semiconductor shielding, in cable and joint plays a very important role. The external semiconductor port must be in uniform and uniform and smooth transition with the insulation, and the cable connector is connected with the cable to be connected with the outside of the cable.
4, treatment construction cable response of stress cone shape, as inch accurate reaction force cone, on the conical surface potential distribution is equal, in the production of XLPE cable cone response. In general, the special cutting tool, also can use Weihuo slightly heated, with a sharp knife cutting, after the basic shape, and then 2mm thick glass scraping, finally sanded from coarse to fine grinding until smooth.
5, metal shielding and grounding processing metal shield in the cable and joint role is mainly used in the transmission cable fault short-circuit current, and electromagnetic shielding near the communication equipment of electromagnetic interference, the running state of the metal shield in the good ground state at zero potential, when the cable fault occurred. It has ability to short-circuit current conduction in a very short period of time. Grounding wire should be reliable welding, both ends of the cable box body metal shielding and armoring tape firmly welded, terminal grounding should be reliable.
6, the joint sealing and mechanical protection of the joint sealing and mechanical protection is to ensure the safety and reliability of the joint operation of the security. In the cable joint penetration of moisture and moisture should be prevented, also in the joint position should take masonry joint protective groove or installed cement protective box.