MHYA32 mining telephone line MHYA32 - MHYV mine with the details of the telephone line: 
 Products 


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 Product Type: 
 Product Name: mine with telephone lines 
 Features: mining the telephone line uses: mainly used in coal mine monitoring, surveillance, rail transit system for information transmission lines, communication systems can also be used for information transmission. 

 Mine the details of the telephone line: 
 Mine - mine the use of the telephone line conditions of use with telephone lines 
 ● mine telephone line environment temperature: -40 ~ 50 ℃ 

 ● mine telephone line monthly average maximum relative temperature: 95% (+25 ° C) 

 ● the mine telephone line installation to the laying of the ambient temperature: ≥ -10 ℃ 

 ● the minimum bend radius of the mine telephone line installation: MHYV, MHJYV for 10 times the cable diameter, the other models for cable diameter 15 times 

 ● mine telephone line cable model names and the use of 

 Model 
 Name 
 Use of 

 MHYV 
 Coal with polyethylene insulated PVC sheathed communication cables 
 For drift, Inclined and electromechanical Cave Room 

 MHJYV 
 Coal using enhanced line core polyethylene insulated PVC sheathed communication cables 
 For mechanical damage higher drift and Inclined 

 MHYBV 
 Coal insulated galvanized steel wire braided armored, PVC sheathed communication cables 
 For mechanical damage higher drift and Inclined 

 MHYAV 
 Mine insulated aluminum - polyethylene bonding layer PVC sheathed communication cables 
 For wet and slanted 

 MHYA32 
 Coal mine polyethylene insulated aluminum - polyethylene adhesive sheath steel wire armored, PVC sheathed communication cables 
 For shaft and inclined 





 ● structural data and technical support 

 Model structure and performance 
 MHYV 
 MHJYV 
 MHYBV 
 MHYAV 
 MHYA32 

 Specification (logarithmic \ core number) 
 1 × 2 
 2 × 2 
 1 × 4 
 5 × 2 
 1 × 2 
 2 × 2 
 5 × 2 
 10 × 2 
 20 × 2 
 20 × 2 
 30 × 2 
 50 × 2 
 30 × 2 
 50 × 2 
 80 × 2 

 Line core structure of the root / diameter (mm) 
 7/0.28 
 4/0.28 copper 

 +3 / 0.28 Telegraph 
 1/0.8 

 Bonding of the sheath and armor layer 
 - 
 - 
 Weaving of galvanized wire 0.2-0.3 
 Aluminum - polyethylene tape wrapped 
 Polyethylene wrapped with galvanized steel wire armored 

 Cable outer diameter ≤ mm, 
 7.1 
 8.6 
 8.0 
 11.5 
 7.1 
 8.6 
 15.6 
 18.4 
 23.4 
 23.4 
 27.4 
 32.6 
 32.6 
 37.3 
 43.0 

 Cable Reference Weight kg / km 
 58 
 89 
 68 
 134 
 58 
 87 
 218 
 323 
 512 
 472 
 678 
 1006 
 1450 
 1943 
 2828 

 Cable conductive core is DC resistance of ≤ Ω / km 
 45 
 73 
 36.7 

 Insulated core insulation resistance ≥ Ω / km 
 3000 

 Resistance to AC voltage 
 Cable insulation wire core and the core of the insulated wire and shielding should be able to withstand lasted 1min the, 1.5kv AC voltage 

 Working capacitance ≤ μF / km. 
 0.06 

 The far-end crosstalk attenuation ≥ dB, (500m) 
 70 

 Intrinsic attenuation ≤ dB / km 
 1.10 
 1.30 
 0.95 

 DC resistance of the cable work when the difference ≤ 
 Loop resistance of 2% 







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