Basic introduction of wire and cable

Wire and cord: normally twisted by several or a number of categories of wire connections [each number of at least two], similar to ropes. Each group of wires are insulated from each other and are often twisted around a center, and the entire outer bread has a highly insulating covering layer. custom cable assembly It is mostly used to transmit, distribute electrical energy or transmit electrical signals.


Wire and cable are mainly composed of the following 4 parts


1. Conductive core: made of high-conductivity material (copper or aluminum). In accordance with the specifications of the laying and employ circumstances to the soft qualities of the cable television, every single key may be formed by a solitary wire or several cables twisted.


2. Efficiency level: The insulating material used for that cable needs to have high efficiency opposition. Widely used insulating materials in cabling incorporate oil-impregnated document, polyvinyl chloride, polyethylene, cross-linked polyethylene, silicone, etc.


3. Closed sheath: shields the insulated core from injury from equipment, moisture content, dampness, substances, gentle, etc. For insulation that is susceptible to moisture, lead or aluminum extruded sealing sheaths are generally used.


4. Defensive cover coating: used to guard the sealing sheath from technical problems. Generally, galvanized steel tape, steel wire or copper tape, copper wire, etc. are used as armor to wrap around the sheath (called armored cable), and the armor layer also plays the role of electric field shielding and preventing external electromagnetic wave interference. In order to prevent steel strips and steel wires from being corroded by the surrounding medium, they are generally coated with asphalt or wrapped with a layer of impregnated jute or extruded polyethylene or polyvinyl chloride sleeves.

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