Mine communication cable | mine communication cable MHYVR

Mine communication cable | mine communication cable MHYVR

Mine communication cable: MHYV MHYAV MHYA32
Mine communication cable: MHYV MHYAV MHYA32 product standard the: MT818.14-1999
Mining 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
MHYAV 1/0.8 (20 × 2 30 × 2 50 × 2) × 0.8 coal with 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 steel wire armored, PVC sheathed shaft and inclined mine communication cable for
Named code
Coal with communication cables ................................... MH
Copper wire core .............................................. omission
Polyethylene insulated ........................................... Y
Aluminum polyethylene sheath ....................................
Polyethylene jacket ......................................... omitted
Braided armored .............................................. B
PVC sheathed ........................................ V
Small round steel wire armored, PVC outer layer .......................... 32
Mine communication cable representation
Mine communication cable models, specifications, said. Such as:
a) have 30 pairs of stranded core for use in mines polyethylene insulated aluminum polyethylene bonded sheath steel wire armored, PVC sheathed mine communication cable is expressed as: MHYA32 30 × 2
b) has a core of stars stranded coal mine polyethylene insulated PVC sheathed mine communication cable, is expressed as: MHYV 1 × 4
Mining the main technical performance indicators of the communication cable
Conductor DC resistance Ω, in mine communication cable 20 ° C / km 7/0.28 ≤ 45 7/0.28 (3 Steel 4 Copper) ≤ 73 1/0.8 ≤ 36.7
Mine the inherent attenuation of the communication cable (800 1000HZ) dB / km ≤ 1.1 ≤ 1.3 ≤ 0.95
Mine communication cable cable insulation wire core 20 ° C insulation resistance MΩ.km ≥ 3000
Mine 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 by
Mine communication cable dc resistance difference ≤ loop resistance of 2%
Mining use characteristics of the communication cable
Mine communication cable conductor to allow the operating temperature -40 to +50 ° C;
Mining the average maximum relative humidity of the communication cables for ≤ 95% (+25 ° C)
Mine is affiliated with the installation of communication cables allow the temperature should be less than -10 ℃
Mine communication cable minimum bending radius: MHYV, MHJYV cable is 10 times the cable diameter, other types of cable outer diameter of 15 times.