MHYAV communication cable details

MHYAV communication cable the-MHYAV mine communication cable the-MHYAV mine with telephone lines
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Mine communication cable - mine communication cables - mining using standard signal cable products: MT818.14 the 1999 MHYV (1 × 2 2 × 2 × 4 5 × 2) × 7/0.28 coal PVC insulated Mine communication cable jacket for drift Inclined the the electromechanical chamber MHJYV 4/0.28 copper + / 0.28 steel wire 1 × 2 2 × 2 for use in mines to strengthen the wire core PE insulated PVC sheathed mining communication cable for higher mechanical damage Lane and the Inclined MHYAV 1/0.8 (20 × 30 × 2 50 × 2) × 0.8 coal with polyethylene insulated aluminum polyethylene bonding layer PVC sheathed communication cables for the relatively moist and slanted MHYA32 (30 × 50 × 2 80 × 2) × 0.8 coal using polythene insulated aluminum polyethylene adhesive layer steel wire armored, PVC sheathed communication cables for the shaft and inclined mine communication cable : MHYV MHYAV MHYA32 products using standard: MT818.14 the 1999 MHYV (1 × 2 2 × 2 × 4 5 × 2) × 7/0.28 coal, polyethylene insulated PVC sheathed mine communication cable is used to drift Inclined and the electromechanical chamber MHJYV 4/0.28 copper + / 0.28 steel wire 1 × 2 2 × 2 coal strengthen the line core PE insulated PVC sheathed mine communication cable for the high mechanical damage Lane and ramp the Lane MHYAV 1/0.8 (20 × 2 30 × 2 50 × 2) × 0.8 for use in mines polyethylene insulated aluminum polyethylene bonding layer PVC sheathed mine communication cable used in the more humid and slanted MHYA32 (30 × 2 50 × 2 80 × 2) × 0.8 coal with polyethylene insulated aluminum polyethylene bonding layer of steel wire armored, PVC sheathed shaft and inclined named code-named coal mine communication cable for communication cables .... ............................... MH copper wire core .......... the ................................ omitted polyethylene insulation .............. ........................... Y-aluminum polyethylene sheath ............ ................... A, polyethylene sheath .................... ..................... omitted braided armored ......................... ............... B, PVC jacket ....................... ................. V small round steel wire armored, PVC outer layer .................... The ... 32 mine communication cable, said method of mining communications cable models, specifications, said. Such as: a) 30 pairs stranded core for use in mines polyethylene insulated aluminum polyethylene bonded sheath steel wire armored, PVC sheathed mine communication cable, said: MHYA32 30 × 2 b) has a star stranded core of the coal with polyethylene insulated PVC sheathed mine communication cable, and is expressed as: Conductor DC resistance Ω, 1 × 4 mine MHYV technical performance and indicators of communication cable 20 ° C / km 7/0.28 ≤ 45 7 / 0.28 (3 Steel 4 copper) ≤ 73 1/0.8 ≤ 36.7 inherent attenuation (800 ~ 1000HZ) dB / km ≤ 1.1 ≤ 1.3 ≤ 0.95 20 ° C, insulation resistance of cable insulation wire core MΩ.km ≥ 3000 line of work capacitance ( 800 ~ 1000HZ) uF / km ≤ 0.06 near-end crosstalk attenuation (800 ~ 1000HZ) dB/500m ≥ 70 inductance (800 1000HZ)-uH / km ≤ 800 resistance to AC power frequency voltage 1.5KV/1min DC resistance difference ≤ ring hindered 2 percent mining use characteristics of the communication cable conductors long-term allowable working temperature of -40 ~ +50 ° C; average maximum relative humidity ≤ 95% (+25 ° C) to allow attached and installed the temperature should not exceed -10 ℃ The minimum bending radius: MHYV, MHJYV cable 10 times the cable diameter, the other types of cable outer diameter of 15 times.