Lanzhou telephone cable mining communication cable MHYV10 * 2 * 0.97

Description :

　　The long-term allowable temperature for communication cables is -40 ° C to 50 ° C, with an average relative humidity of 25 ° C. Communication cables are allowed to be installed at a temperature not lower than -10 ° C, and the small bending radius of the cable is 15 times the outer diameter.

　　Selection of Mining Cables:

　　In the mine power supply system, high-voltage power supply lines generally use armored cables, which have a much lower failure rate compared to low-voltage power supply. The power supply in mining areas is a weak link in the power supply system, and the working environment is poor. Therefore, how to choose the type and cross-section of cables is related to the safety of power supply operation. The following introduces the selection of cables and the method of selecting cable cross-sections.

　　Mining cable control core:

　　1. Increase the flexibility of coal mining machine cables used in coal mines;

　　2. Increase the relative slippage of the control wire core;

　　3. Increase the strength of cable conductors for coal mining machines used in coal mines;

　　4. Changing the conductor from the original bundle twisting structure to regular twisting can increase its bending performance, and then weaving steel wires outside the conductor to increase its strength;

　　5. The control wire core can be woven with a mixture of tinned copper wire and steel wire, which is also a good method.

　　Requirements for fixed laying of high-voltage cables for mining cables:

　　1. In the vertical shaft or inclination angle of 45 ° C; In the above tunnels, PVC insulated thick steel wire armored PVC sheathed power cables and cross-linked polyethylene insulated thick steel wire armored PVC sheathed power cables should be used;

　　2. In horizontal tunnels or at an inclination of 45 degrees; In the following tunnels, PVC insulated steel strip or fine steel wire armored PVC sheathed power cables, cross-linked ethylene steel strip or fine steel wire armored PVC sheathed power cables should be used;

　　3. Aluminum core cables can be used in the air intake inclined shaft, underground parking lot and its vicinity, and between the substation and the mining area substation; Copper core cables must be used in other locations;

　　4. Fixed low-voltage cables should use Mw armored or unarmored cables or mobile rubber sheathed flexible cables of corresponding voltage levels;

　　5. Non fixed high and low voltage cables must use rubber sheathed flexible cables that comply with the Mr818 standard. Mobile and handheld electrical equipment should use rubber sheathed cables;

　　6. Cables used for lighting, communication, signaling, and control should be armored communication cables, rubber sheathed cables, or M-type, factory type plastic cables;

　　7. Aluminum cores should not be used for low-voltage cables, and aluminum cores are strictly prohibited for low-voltage cables in mining areas.

　　Mining cable is the abbreviation for coal mine cable. Mining cables are all flame-retardant cables and should be issued with a mining product safety mark certificate by the National Mining Product Safety Mark Center. U-shaped (M-type) rubber sheathed cable for coal mines.

　　Tianjin Cable Factory Branch, with the spirit of unity, pragmatism, dedication, and dedication, has gained a high reputation in the market through the hard work and active exploration of all employees. Welcome customers to join hands with our company for contracts, mutual benefit, and common development!

AfterSalesService :

• Multi core communication cable for coal mines