Product standard: MT818.14-1999

Mine communication cable:

MHYV (1 × 2 2 × 2 × 4 5 × 2) × 7/0.28 coal Lane Inclined communication cable for electrical and mechanical chamber with polyethylene insulated PVC sheathed mine

MHJYV 4/0.28 copper + / 0.28 steel wire 1 × 2 2 × 2 for use in mines to strengthen the line core PE insulated PVC sheathed mine communication cable for the high mechanical damage Lane and Inclined

Mine communication cable model: MHYAV-20 * 2 * 0.8 30 * 2 * 0.8 50 * 2 * 0.8 coal mine with polythene insulated aluminum polyethylene bonding layer PVC sheathed communication cables used for wet inclined peace, Lane

MHYA32 (30 × 2 50 × 2 80 × 2) × 0.8 coal with polyethylene insulated aluminum polyethylene bonding layer steel wire armored, PVC sheathed shaft and inclined mine communication cable for naming code for use in mines communication cables. the .................................. MH copper wire core ........... ................................... omitted polyethylene insulation ........... .............................. Y-aluminum polyethylene sheath ......... ............................ A, polyethylene jacket ................. ........................ omitted braided armored ...................... ................... B, PVC jacket .................... .............. V small round steel wire armored equipment, PVC outer layer ................. ......... 32 Mine communication cable 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: MHYA32 30 × 2b) with a quad the coal mines of the wire core PVC sheathed mineral insulated communication cable, said: Conductor DC resistance Ω, in MHYV 1 × 4 mine communication cable technology performance and indicators 20 ° C / km 7/0.28 ≤ 45 7 / 0.28 (3 steel, copper) ≤ 73 1/0.8 ≤ 36.7 ore inherent attenuation of the communication cable (800 ~ 1000HZ) dB / km ≤ 1.1 ≤ 1.3 ≤ 0.95 20 ° C core of the cable insulation when insulation resistance MΩ.km ≥ 3000 mine with communication cable capacitor (800 ~ 1000HZ) uF / km ≤ 0.06 Mine communication cable near-end crosstalk attenuation (800 ~ 1000HZ) dB/500m ≥ 70 mine communication cable inductance (800 ~ 1000HZ)-uH / km ≤ 800 mine communication cable resistance AC power frequency voltage 1.5KV/1min mine communication cable dc resistance difference ≤ 2% Mine mine with the use of characteristics of the communication cable communication cable conductor loop resistance permissible continuous operating temperature -40 to +50 ° C average maximum relative humidity of communication cables; mining ≤ 95% (+25 ° C) mine communication cable to allow attached and installation temperature should be less than -10 ℃ mine communication cable minimum bending radius: MHYV, MHJYV cable for 10 times the cable diameter and the other types of cable is 15 times the outer diameter of