MHYA32 mine flame retardant communication cable

MHYA32 mine flame retardant communication Cable

Mine communication cable structure;
1. Conductor: annealed bare copper wire with diameters of 0.30, 0.42, 0.52, 0.60, 0.70, 0.80, 0.90 (mm).
2、 Insulating material : High density polymer ethylene Or polypropylene, the color of insulated wire shall be marked according to the full chromatographic standard.
3. Insulated wire pair: Twist two insulated wires of different colors into pairs according to different pitches, and use the specified chromatographic combination to identify wire pairs.
4. Core structure of communication cable: 1 pair is taken as the basic unit, and more than 25 pairs of cables are combined according to the unit. Each unit is bound with the unit tie of the specified color spectrum to identify different units. 100 pairs or more of cables have 1% spare pairs, but the number of zui is no more than 6 pairs. The gap in the cable core shall be filled with petroleum jelly. MHYA32 mine flame retardant communication cable
5. Cable core tape: wrapped with polyester film tape.
6. Shielding: copper wire shielding or corrugated (or non corrugated) metal tape, which is longitudinally wrapped outside the core tape of communication cable.
7. Sheath: blue high-density polyethylene. Double sheathed communication cables are also available.
Identification and length marking of mine communication cable; There are * identification marks on the outer surface of the cable with an interval of no more than 1m. The contents of the marks include: conductor diameter, number of pairs, cable model, manufacturer name code and manufacturing year. The length mark is marked on the outer surface with an interval of no more than 1m, but it is staggered with the above marks. The mining communication cable adopts full chromatographic insulation and aluminum plastic composite sheath (that is, the longitudinal shielding aluminum tape of the cable is bonded with the sheath to form a sealed sheath), which is characterized by superior electrical performance and convenient construction. MHYA32 mine flame retardant communication cable

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