Mine cable classification and structure
Mine cable
Mine cable classification:
MY mine mobile rubber cable, mining MYQ light rubber soft cable and MYP cable
 
Conducting wire core.
Flexibility required of drill cables, mining cable machine is the highest; the following measures lead structure:
 
1, using fine diameter copper wire, soft pitch to beam, cutter. The influence of insulation and sheath structure also affected the whole cable bending and torsion of, and therefore can not be considered the finer the filament, pitch, the smaller the better.
 
2, using the same direction of the beam and the complex can improve the flexibility.
 
3, in order to facilitate the relative sliding of the conducting wire in the insulation layer and the convenient installation and maintenance. Drill cables and small section of the digging machine cable conductor monofilament tin, large section mining machine cable in the outer conductor adopts insulating isolation tape.
 
Insulation layer: 
the requirements of adequate electrical insulation properties
1, the use of rubber containing no less than thirty-five percent of the rubber.
2, the thickness of insulation than general rubber sheathed cable to be thick.
3, with good electric rubber, with good extruding process (such as continuous extruding curing production line)
 
Shielding layer
The semi conductive rubber is used as the shield layer, so that the transition resistance can be reached to the standard, so as to ensure the reliable operation of the relay protection system in the accident state.
 
Pad core
1, the pad core to fully play the role of the cable in the cable, the buffer effect, and can not over the ambassador outside diameter is too large. The gap between the insulating core wires is designed reasonably.
2, the mechanical properties should not be less than the requirements of insulating rubber.
3, can not be produced with the insulation wire core.
 
Sheath
1, the requirement has enough mechanical strength, good wear resistance. Underground cables require flame retardant. Therefore, the use of chloride butyl rubber, and the amount of plastic is not less than fifty percent.
2, 6KV moves the rubber sleeve cable to require the sheath to have enough electrical insulation, and improves the corona cracking resistance of the sheath.
 


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