Coal flame retardant communication cable sales calls ,0316 -5960412 mine cable MHYBV cable MHYBV communication cables, MHYBV shielded cables Telephone: 13131682147TI of HYA communication cable, the HYV22 communication cables, HYA23 communication cables, HYV communication cables, HYA22 communication power Zmkj002 cable HYA53 communication cables, HYAT communication cables, the HYAT23 communication cables, HYA43 communication cables, HYAT53 communication cable, the HYAC communication cables, the HPVV communication cables, HJVV communication cable, the HJVVP communication cable, ZRHPVV communication cables, HYA33 communication cable, the HYAT33 communication cable, HYAT43 communication cables, the HYY communication cable, the HYY23 communication cables, HYY33 communication cable, the HY32 communications cable, ZRC-of HYA communication cable WDZ - as-of HYA communication cable, mine MHYV communication cables, MHYAV mine communication cables, the MHYVR Mine communication cable, MHYVP Mine communication cable, MHYAP Mine communication cable the MHYRP Mine communication cable, the MHY32 Mine communication cable, the MHYA32 Mine communication cable, the MHYBV Mine communication cable, MHJYV mine communication cable
MHYV MHYVR MHYVRP PUYV PUYVR PUYVRP MHYBV PUYV31
Gas monitoring probe line _ mine explosion-proof telephone line product standard: MT818-1999
The main technical performance indicators:
Conductor DC resistance Ω, 20 ° C / km 7/0.37 ≤ 24.5 7/0.43 ≤ 18.1 7/0.52 ≤ 12.1
Intrinsic attenuation (800 1000HZ) dB / km ≤ 1.2
20 ° C, core insulation of the cable insulation resistance MΩ.km ≥ 5000
Line capacitor (800 ~ 1000HZ) uF / km ≤ 0.10
Near-end crosstalk attenuation (800 ~ 1000HZ) dB/500m ≥ 70
Inductance (800 1000HZ)-uH / km ≤ 800
AC power frequency resistance voltage 1.5KV/1min by
DC resistance difference of 2% of ≤ loop resistance
Mining use characteristics of the communication cable
The conductor of the long-term allowable working temperature -40 to +50 ° C;
The average maximum relative humidity ≤ 95% (+25 ° C)
Allow attached and installed the temperature should not exceed -10 ° C
Minimum bending radius: MHYVR cable is 10 times the cable diameter, and other types of cable is 15 times the outer diameter of
MHYV coal polyethylene insulated PVC sheathed communication cables for the drift, Inclined and electromechanical Cave Room
MHJYV coal with enhanced line core polyethylene insulated PVC sheathed communication cables for mechanical damage higher drift and Inclined
Coal MHYBV woven with insulated galvanized steel wire armored, PVC sheathed communication cables used to higher mechanical damage of the drift and Inclined
MHYAV coal polyethylene insulated aluminum - polyethylene adhesive layer PVC sheathed communication cables used in wet and slanted
Coal MHYA32 polyethylene insulated aluminum - polyethylene bonded sheath steel wire armor fitted PVC sheathed communication cables for the shaft and inclined