Installation cable gland Precautions
1. The conductor connection requires low resistance and sufficient mechanical strength, and no sharp corners should appear at the connection. The commonly used connection of medium and low voltage cable conductors is crimping, and the crimping should be noted:
Choose a conductor connecting pipe with appropriate conductivity and mechanical strength;
The fit gap between the inner diameter of the crimping tube and the outer diameter of the connected core is 0.8～1.4mm;
The resistance value of the joint after crimping should not be greater than 1.2 times that of the conductor of equal cross-section, and the tensile strength of the copper conductor joint should not be less than 60N/mm2;
Before crimping, coat the outer surface of the conductor and the inner surface of the connecting pipe with conductive glue, and use a wire brush to destroy the oxide film;
Use a file or sandpaper to smooth the sharp corners and burrs on the connecting tube and the core conductor.
2. Internal semiconductor shielding treatment.
Where the cable body has an inner shielding layer, the inner shielding layer of the conductor part of the crimping tube must be restored when the joint is made. A part of the inner semiconductor shielding of the cable must be reserved so that the inner shielding of the connector on the connecting tube can communicate with each other. Ensure the continuity of the internal semiconductor, so that the field strength at the junction is evenly distributed.