The wire of the
communication cable structure for
mining was annealed bare copper wire with copper wire diameter of 0.30, 0.42, 0.52, 0.60, 0.70, 0.80, 0.90 (mm). Insulation High Density Polyethylene or Polypropylene. Indicate the color of the insulated wire according to the full color standard. Insulated pairs twist two different colors of insulated wire into pairs at different pitches and use the specified chromatographic combination to identify pairs. The cable structure of the communication cable is based on one pair. Over 25 pairs of cables are grouped by unit, and each unit is wrapped around the unit band of the specified chromatogram to identify different units. 100% or more pairs of cables have a 1% reserve line pair but no more than 6 pairs. The gap in the core is filled with petroleum jelly.
The core wrap is wrapped with polyester film tape. Shielded copper wire shields or embossed (or non-embossed) metal strips, which are wrapped outside the cable glands of the communications cable. Sheathed blue low density polyethylene. Double jacketed
communication cables are also available. Identification and length marking of mining communication cables The cable has permanent identification marks on the outer surface of the cable. The marking interval is not more than 1m. The marking content includes: wire diameter, number of wire pairs, cable type, manufacturer's name and manufacturing year, and length mark. Intervals of not more than 1 m are marked on the outer surface but are staggered with the above marks. The mining communication cable adopts full-chromatization insulation, and the aluminum-plastic integrated sheath (that is, the longitudinal shielding aluminum tape of the cable is bonded with the sheath to form a seal sheath) has the advantages of superior electrical performance and convenient construction.
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