MHYV 1 * 4 * 7/0.43 mining communication cable

MHYV 1 * 4 * 7/0.43 mining communication cable

MHYV 1 * 4 * 7/0.43 mining communication cable

MHYV cable is a type of mining communication cable. Here is a detailed introduction about it:

1. Structural composition:
-Conductor: Copper wire is usually used, which has good conductivity to ensure effective signal transmission.
-Insulation layer: Made of polyethylene material, this material has good insulation performance and can effectively prevent current leakage, ensuring the safety of the cable during use.
-Sheath: Made of polyvinyl chloride sheath, it has good flame retardancy and corrosion resistance, and can adapt to the complex working environment in mines.
2. Performance characteristics:
-Stable signal transmission: Suitable for ordinary signal transmission in coal mines, it can maintain signal stability and accuracy during long-distance transmission, effectively expanding the coverage range of underground communication.
-High mechanical strength: It can withstand certain mechanical tensile and compressive forces, and is not easily damaged under complex terrain and working conditions in mines, ensuring the reliability and service life of cables.
-Good temperature resistance: The long-term allowable working temperature of the conductor is relatively high, generally up to around 65 ℃, and it can also work normally in high-temperature environments underground in coal mines.
-High safety: With good flame retardant properties, it can prevent the occurrence and spread of fires to a certain extent, ensuring the safety of underground workers and the normal operation of equipment.
3. Applicable scenarios: Mainly used for laying communication lines in coal mine tunnels, inclined tunnels, and mechanical and electrical chambers. In these places, MHYV cables can provide stable signal transmission for various communication equipment in the mine, such as underground telephones, monitoring systems, control systems, etc.
4. Technical parameters:
-Direct current resistance of wires: There are usually specific standard requirements, such as the resistance should meet relevant regulations at 20 ℃ to ensure the normal transmission of current.
-Insulation resistance: At 20 ℃, the insulation resistance of the cable insulation core should generally reach 3000M Ω· km or more to ensure good insulation performance.
-Working capacitance: At frequencies of 800-1000Hz, the line to line working capacitance typically does not exceed 0.06 μ F/km.
-Resistant to AC power frequency voltage: able to withstand an AC power frequency voltage test of 1.5kV/1min, ensuring safety under normal operating voltage.

Terms of Use
● Environmental temperature: -40~50 ℃
Relative temperature: 95% (+25 ℃)
Installation and laying environment temperature: ≥ -10 ℃
● Small bending radius during installation: MHYVR is 10 times the outer diameter of the cable, while other models are 15 times the outer diameter of the cable
● Cable model, name, and purpose