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Conductor connection Conductor connection requires low resistance and sufficient mechanical strength, and no sharp corners should appear at the connection. The connection of medium and low voltage cable conductors is usually crimping. Pay attention to crimping:
(1) Select a conductor connecting tube with appropriate conductivity and mechanical strength;
(2) The fit clearance between the inner diameter of the crimp tube and the outer diameter of the connected core is 0.8 to 1.4 mm;
(3) The resistance value of the joint after crimping should not be greater than 1.2 times of the conductor of equal section, and the tensile strength of the copper conductor joint is not less than 60N / mm2;
1. Internal semiconductor shielding treatment.
Where the cable body has an inner shield layer, the inner shield layer of the connector of the crimping pipe conductor must be restored when the joint is made, and a part of the inner semiconductor shield of the cable must be left in order to allow the inner shield of the connector on the connection pipe to communicate with each other. Ensure the continuity of the inner semiconductor, so that the field strength at the joint takeover is evenly distributed.
2. Treatment of external semiconductor shielding.
The outer semiconductor shield is a semi-conductive material that acts as a uniform electric field on the outside of the insulation of cables and cable joints. Like the inner semiconductor shield, it plays a very important role in cables and joints. The outer semiconductor port must be neat and uniform, and smooth transition with insulation is also required, and the semiconductor tape wrapped around the cable connector is connected with the semiconductor shield of the cable body.
