- Jul 22, 2020-
Control cables mainly transmit 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 inner core of the control cable The number of wires is large, and the wires may have a separate shielding layer.
What is the difference between power cable and control cable, power cable is 0.6/1kv such as VV, YJV, control cable is 450/750v such as KVV, KVVP. Generally, power cables are within 5 cores. They are generally used for heavy current. There are more cores for control cables. Sometimes customers have different requirements, usually 37 cores, but there are more cores.
The commonly used cable classification is divided into five categories:
(1) Wires and bare inner conductor products: refers to only conductors without insulation and other structures. Such as: copper, aluminum and various composite metal single wires; various structures of overhead transmission with stranded wires, flexible wiring, profiles and profiles, etc.
(2) Electromagnetic wire: In the form of a winding, the magnetic line of force is cut in a magnetic field to induce current, or the wire that generates a magnetic field with current is called electromagnetic wire. Such as enameled wire, fiber wrapped wire, inorganic insulated wire and so on.
(3) Power cables: Wire products used to transmit and distribute high-power electrical energy in the backbone of the power system, called power cables. Such as: plastic cables of various voltage levels, oil-impregnated paper cables and non-drip, etc.
(4) Communication cables: cables used to transmit audio and various telecommunication information above audio. Such as: local telephone cables, long-distance symmetrical communication cables, coaxial communication cables, telephone equipment cables and data cables, etc.
(5) Wires and cables for electrical equipment: Wires and cables for power connection of various electrical equipment and appliances that directly transmit electrical energy from the power distribution point of the power system. 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 combine the characteristics of the equipment used and the environmental conditions 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 cables directly transmit electrical energy from the power distribution point of the power system to the power connection lines of various electrical equipment and appliances. 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.