Mining control cable Executive standard: MT818-1999
2, coal used to control cable use: This product is suitable for AC rated voltage U0 / U 450/750V and control monitoring circuit and protection circuit and power distribution equipment, electrical instrumentation cable.
3, for use in mines control cable to use the occasion
MKVV MKVVP MKVVRP MKVVR 0.5-10mm22-61 core is applicable to weak control system, or strong electromagnetic interference area
MKVV22 MKVV32 0.5-10mm22-61 core
Strong electromagnetic interference
4, the main technical performance and indicators
Conductor DC resistance Ω, 20 ° C / km 0.75mm 2 ≤ 24.5 1.0mm 2 ≤ 18.1 1.5mm 2 ≤ 12.1 2.5 mm 2 ≤ 7.41
20 ° C, core insulation of the cable insulation resistance MΩ.km ≥ 60
AC power frequency resistance voltage 3.0KV/5min by
Mining the characteristics of the use of cable
The conductor of the long-term allowable working temperature -40 to +50 ° C;
The average maximum relative humidity of ≤ 95 (+25 ° C)
Allow attached and installed the temperature should not exceed -10 ° C
Use characteristics: coal with long-term control of the cable conductor to allow the operating temperature of 70 ° C, cable laying temperature should be not less than 0 ℃.
Allowed bending radius of the coal used to control cable: cables with armor or copper tape shielding structure should not be less than the cable diameter
12 times. Soft cable shield structure should be not less than six times the cable diameter. Unarmored cables should not be small
6 times the cable diameter.