A brief introduction 
 Mining communication cables MHYV cable, enhanced communication cables MHJYV for drift, Inclined, and electrical and mechanical chamber for DRIFT, Inclined, good tensile strength. 
 The mining communication cables MHYV cable, MHJYV strengthen a detailed description of the type of communication cable 

 Mine communication cables MHYV cable, enhanced communication cables in MHJYV mine communication cable (mine communication cable) the-mhyv cable 

 Name the code: 

 ? coal mine with a communication cable. MH (HU) 
 ? copper wire core ... omitted 
 ? polyethylene insulation ... Y 
 ? aluminum - polyethylene adhesive sheath ... 
 ? Polyethylene jacket ...... omitted 
 ? woven steel wire armored ...... B 
 ? Blue flame retardant PVC sheath ... V 
 ? The steel wire armored, blue flame-retardant PVC outer sheath ... 32 
 Mine communication cable, that the main model name, specifications and their uses: 

 Type the name of structural use 
 Number of cores 
 MHYV (HUYV) Mine insulated, flame-retardant PVC sheathed communication cables 2-5 7/0.28 Lane, Inclined, and electrical and mechanical chamber 
 Mine MHJYV (HUJYV) polyethylene insulation, flame-retardant PVC sheath reinforced communication cables 2-5 7/0.28 
 (C steel four copper) for the drift, Inclined, good tensile strength 
 Mine MHYBV (HUYBV) insulated with polyethylene, woven galvanized steel wire armored, flame-retardant PVC sheathed communication cables 5-50 1/0.8 for mechanical shock, the higher the drift, Inclined 
 Mine MHYAV (HUYAV) insulated, aluminum / polythene bonded sheath, flame retardant PVC sheathed communication cables 10-100 1/0.8 
 1/1.0 is used to wet and slanted lines of communication 
 Mine MHYA32 (HUYA32) polyethylene insulation, aluminum / polythene bonded sheath, galvanized steel wire armored, flame-retardant PVC sheathed communication cables 10-100 1/0.8 
 1/1.0 for the mine shaft or inclined to make communication lines 

 Mining the electrical properties of the signal cable: 

 Item Unit MHYV MHJYV MHYBV MHYAV, MHYA32 

 7/0.28 7/0.28 1/0.8 1/1.0 
 +20 ° C conductor DC resistance Ω / km ≤ 45 ≤ 73 ≤ 36.7 ≤ 25.8 
 Intrinsic attenuation (800 1000HZ) dB / km ≤ 1.1 ≤ 1.30 ≤ 0.95 ≤ 0.7 
 +20 ° C conductor insulation resistance MΩ.km ≥ 3000 
 Line capacitor (800 ~ 1000HZ) uF / km ≤ 0.06 
 Far-end crosstalk attenuation (800 1000HZ) dB / km ≥ 70 
 Inductance (800 1000HZ) mH to / km ≤ 800 
 Resistance to AC power frequency voltage - 1.5KV/1min by 
 Current resistance - ≤ loop resistance of 2% 

 Working conditions: 

 ? cable using an ambient temperature of -40 ° C to +50 ° C 
 ? Cable laying temperature ≥ -10 ° C 
 ? the temperature at 25 ℃ ≤ 95% 
 Bending radius of cable laying: 
 The type MHYV cable ≥ 10 times the cable outer diameter 
 The rest of the model cable ≥ 15 times the cable diameter 
 Mine communication cable outer diameter 

 Specification 
 Number × root × conductor diameter MHYV (HUYV) MHYJV (HUJYV) 
 1 × 2 × 7/0.28 7.1 7.1 
 4 × 1 × 7/0.28 7.3 7.3 
 5 × 2 × 7/0.28 11.3 11.3 
 10 × 2 × 7/0.28 - 

 Specification 
 Number × root × conductor diameter MHYBV (HUYBV) MHYAV (HUYAV) MHYA32 (HUYA32) 
 3 × 2 × 0.8 - 14 - 
 5 × 2 × 0.8 15.3 16 18 
 10 × 2 × 0.8 17.6 18.5 22 
 20 × 2 × 0.8 21.4 20 24 
 30 × 2 × 0.8 25.5 25 26 
 50 × 2 × 0.8 30.2 29 33 
 80 × 2 × 0.8 - 36 39