Installation and maintenance of wire and cable are often much more likely than failures caused by defects in the wire and cable body. Therefore, wire and cable and accessory accessories must be correctly selected. In addition to design and construction according to the specifications, wire and cable manufacturers should also pay attention to the following points.
1. Cable laying installation should be carried out by qualified professional units or professionals. Construction and installation that do not meet the requirements of relevant regulations may result in the cable system not functioning properly.
2. When the cable is mechanically applied, the special cable laying machine is generally used and equipped with the necessary traction tools. The traction force is appropriate and the control is uniform to avoid damage to the cable.
3. The bending radius of the cable when laying is greater than the specified value. Before and after the cable installation, measure the insulation resistance between the conductors of the cable with a 1000V megohmmeter, and correct the measurement results according to the cable model specifications, length and ambient temperature.
4. Before applying the cable, check the appearance of the cable and whether the head is intact. Pay attention to the direction of rotation of the cable tray when casting. Do not flatten or scratch the outer sheath of the cable. Do not straighten the cable when it is cold in winter. In order to avoid insulation and cracking of the sheath.