Mine cable

Mine cable refers to the cable and wire commodities used for road machinery and equipment and mine machinery and equipment for the production of coal mining industry. All mining cables are flame-retardant cables, which shall be issued with the safety mark certificate of mining products by the National Safety Mark Center for Mining Products. The DC rated current U0/U is 380/660V, 660/1140V, 1.9/3.5kv, 3.6/8kv, 6/10KV, 8.7/10KV.

Use of mining cables

The product is mainly used for the transmission of strong electric energy in the power generation, distribution, transmission, transformation and power supply lines, with large current (tens of amperes to thousands of amperes) and high voltage (220V to 500kV and above).    (MY) UY-0.38/0.66 mining mobile rubber-sheathed flexible cable with rated voltage of 0.38/0.66KV for power connection of various underground mobile coal mining equipment;    (MYP) UYP-0.38/0.66 mining mobile shielded rubber sheathed flexible cable with rated voltage of 0.38/0.66KV for power connection of various underground mobile coal mining equipment;    (MYP) UYP-0.66/1.14 Mine mobile shielded rubber flexible sleeve cable rated voltage is 0.66/1.14KV for power connection of various underground mobile coal mining equipment.

Model and specification of common mine cable

Mine cable includes mc cable, mcp cable, mz cable, mzp cable, myq cable, my cable, mcptj cable, myptj cable, mvv cable, mkvv cable, myjv cable, mkyjv cable, mhyv cable, ugf cable, high voltage mine cable, 10kv rubber sleeve flexible cable, 8kv mine cable, mine anti-movement cable, mine anti-insulation cable, mcpt cable, mine anti-rubber sleeve flexible cable.    3.6/6KV and below coal mine mobile resistance olefin shielded flexible cable.    1.9/3.3KV and below portable flame retardant shearer metal material shield flexible cable.    3.6/6KV portable flame-retardant metal material for coal mining shielded monitoring flexible cable.    1.9/3.3KV and below portable flame retardant coal mining machine flexible cable.    0.66/1.14KV and below portable flame-retardant flexible cable for mining.    0.3/0.5KV mine hand-proof electric drill cable.    MHYV mining high-voltage polyethylene insulation layer polyethylene sheath communication optical cable is used for general data signal transmission in the mining plant and is suitable for fixed laying.    MHYVR medium mining high-voltage polyethylene insulation layer polyethylene sheath communication flexible cable is used for general data signal transmission in the mining plant and can be used for mobile applications.    MHYVP high voltage polyethylene insulating layer for coal mining is manually woven and shielded with polyethylene sheath, and the communication optical cable is used for data signal transmission in the field with great influence of electrostatic field, which is suitable for fixed laying.    MHYVRP high voltage polyethylene insulating layer for coal mining is manually woven and shielded with polyethylene sheath, and the communication flexible cable is used for data signal transmission in the field with great influence of electrostatic field, and the cable is relatively soft.    MHYBV medium mining high-voltage polyethylene insulation layer galvanized steel wire manual braided armored cable polyethylene sheath communication optical cable is used for main data signal transmission in places with high impact of mechanical equipment.    MHY32 medium mining high-voltage polyethylene insulation layer stainless steel wire armored cable polyethylene sheath communication optical cable is used for main data signal transmission in alleys, shafts or inclined shafts

Flame retardant mechanism of mine cable

Flame retardant is added to the insulation and sheath materials of mining cables. Under the heat of combustion reaction, the flame retardant in the condensed phase decomposes and absorbs heat, slowing down the temperature rise in the condensed phase and delaying the thermal decomposition rate of materials; After thermal decomposition of the flame retardant, the chain reaction free radical cable is released, which interrupts the flame and chain reaction branches and slows down the gas phase reaction speed; The formation of coking layer or foam layer strengthened the role of these layered hard shells in blocking heat transfer; Under the action of heat, the flame retardant undergoes an endothermic phase change, which physically prevents the temperature rise in the condensed phase.

Main characteristics of mine cable

Extrude (wrap) the insulation layer outside the conductor, such as overhead insulated cable, or stranded several cores (corresponding to the phase line, zero line and ground wire of the power system), such as overhead insulated cable with more than two cores, or add a sheath layer, such as plastic/rubber sheathed wire and cable. The main process technologies include drawing, stranding, insulation extrusion (wrapping), cabling, armouring, sheath extrusion, etc. The different process combinations of various products have certain differences.