Selection Of Control Cables

1. Overview of control cables: The cables that connect the control center to various systems for transmitting signals or controlling operational functions are collectively referred to as control cables. The early functions of control cables were relatively simple, including indicator light display, appearance indication, operation of relays and switchgear, alarm interlocking system, etc. In recent years, due to the widespread application of weak current and computer networks, higher functionality and requirements have been put forward for the selection and application of control cables.
2. The main series of control cables include PVC insulated control cables, natural styrene butadiene rubber insulated control cables, and polyethylene insulated control cables. In addition, there are products with cross-linked polyethylene insulation and ethylene propylene rubber insulation. At present, China can still produce 600/1000V plastic insulated control cables. The additional voltage for rubber insulated control cables is 300/500V. The core wire of the control cable is copper core, with a nominal cross-section of 2.5mm2 or less, and the core wire is 2-61 cores. 4-6mm2, 2-14 cores; The working temperature of a 10mm2, 2-10 core control cable is 65 ° C for rubber insulation and 70 ° C and 105 ° C for PVC insulation. The control cables used in computer systems are usually insulated products made of polyvinyl chloride, polyethylene, cross-linked polyethylene, and fluoroplastics.