Wires and cables used to directly transmit elect […]
Wires and cables used to directly transmit electrical energy from the power distribution point of the power system to various electrical equipment and appliances. Such as: wires and cables for electrical connections and control signals in various industrial and agricultural equipment. This type of product has a wide range of applications and a wide range of varieties, and most of them must be combined with the characteristics of the equipment used and the environmental conditions used to determine the structure and performance of the product. Therefore, in addition to a large number of general-purpose products, there are many special and special products. Such as: general insulated wires, installation wires, rubber-sheathed flexible cables, control cables, signal cables, special cables for airplanes, automobiles, tractors, electrical and electrical lead wires, cables for locomotives and vehicles, wires for radio devices, cables for mining, and cables for ships , Agricultural cables, oil mine and exploration cables, cables for field work, wires for various high voltage DC equipment, flexible cables, etc.
Power cables are used in the main line of the power system to transmit and distribute large-function electrical energy. The control cable directly transmits electrical energy from the power distribution point of the power system to the power connection lines of various electrical equipment. The rated voltage of the power cable is generally 0.6/1kV and above, and the control cable is mainly 450/750V. When power cables and control cables of the same specification are produced, the thickness of the insulation and sheath of the power cables is thicker than that of the control cables.
Power cables are used to transmit electric energy, that is to say, the voltage connected to the cable and the current passing through it are both large. Generally, the insulation level is higher and the conductor cross section is larger. A cable can contain 5 core wires. As a control cable, it mainly transmits low-current electrical signals: such as connecting to drive control contactors and relays, transmitting audio and video signals, etc., the power load transmitted by the wire is small, the voltage level is low, and the control cable The number of internal core wires is large, and the wires may have a separate shielding layer.