All plastic communication cable in the cable core is mainly composed of conductor, wire insulation, cable core insulation covering layer, cable tie and etc.
1. The core is composed of metal wires and insulation. Wires are used to transmit electrical signals, with good electrical conductivity, enough softness and mechanical strength, at the same time also require easy processing, installation and use. Soft quality for electrolytic copper wire, copper wire of the wire diameter is 0.32, 0.4, 0.5, 0.6, 0.5 mm etc. Five.
2. Insulation and insulation structure
All plastic communication cable in the city of conductor insulation mainly USES the high density polyethylene, polypropylene, or ethylene propylene copolymer, such as polymer, called polyolefin plastics.
3. The conductor lay: has the twisted and star twisted two kinds, core wires twisting are commonly used for ground way.
4. Cable conductor chromatography
The cable conductor of the cable chromatography could be divided into two types: general chromatography and whole spectrum.
(1) general chromatography communication cable
General chromatography to wring concentric communication cable has rarely used.
(2) the whole spectrum communication cable
The meaning of the whole spectrum "refers to any pair of conductor of the cable, can all be units at all levels of cable tie color and line of color to identify, in other words to qualification, can find outlet, outlet can say to qualify.
(1) the whole chromatogram to wring the concentric cable core (rarely)
(2) the whole spectrum of ground unit type cable core
All chromatographic to ground unit type cable conductor was most used in such a cable. The code it is made of white (W), red (R) and black (B), yellow (Y), purple (V) as the pilot color (on behalf of a line), blue (Bl), orange (O), green (G), brown (Br), gray (S) as a circular color (B line) ten kinds of color composition to the whole spectrum line to 25, said 25 to the basic unit of U.
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