Direct Answer
Flame-retardant mining communication cables are safety-type cables carrying control, monitoring and communication signals in coal mines. They are rated -40 to +50°C and built to MT818.14-1999.
What are flame retardant mining communication cables and what do they do?
Flame-retardant mining communication cables are safety-type cables designed to transmit control, monitoring and communication signals in underground coal mines. Their core function is to carry signals reliably while providing flame-retardant safety characteristics. Unlike power cables, these cables are intended for signal transmission rather than power distribution.
Where are flame-retardant mining communication cables used underground?
Flame-retardant mining communication cables are used across several underground applications depending on the cable type. MHYBV cables serve fully mechanized coal mining faces, main roadways and inclined roadways. MHYVP cables are used for underground backbone communication lines, monitoring and sensing systems, and automation control signal transmission. Mine leaky coaxial cables such as MSLYFVZ support underground wireless communication systems, precise positioning for personnel and equipment, locomotive transportation monitoring, and emergency communication and rescue.
Application-specific cable types
- MHYBV: PE-insulated, braided-shielded, galvanized steel wire braided armored, PVC-sheathed cable for harsh face and roadway environments.
- MHYVP: polyethylene insulated braided shielded PVC sheathed cable for backbone and monitoring systems.
- MSLYFVZ / MSLYFYVZ: mine leaky coaxial cables for wireless and positioning systems.
What temperature range do flame-retardant mining communication cables support?
Flame-retardant mining communication cables support a long-term allowable conductor operating temperature of -40 to +50°C. The minimum installation temperature is -10°C. These limits make the cables suitable for typical underground coal mine conditions within the stated range.
Which standards apply to coal mine communication cables?
Coal mine communication cables are produced to the MT818.14-1999 standard. An additional enterprise standard, QB/DSXH001-2010, may also apply. Compliance with these standards supports safety-type performance and flame retardance.
What types of flame-retardant mining communication cables are available?
Several common coal mine communication cable types are available for different underground needs. MHYV, MHJYV, MHYBV, MHYAV and MHYA32 are safety-type cables for control, monitoring and communication signals. MHYVP is a polyethylene insulated braided shielded PVC sheathed cable for backbone and monitoring systems, while MSLYFVZ and MSLYFYVZ are leaky coaxial cables for wireless and positioning systems. Selection considerations include the application (face, roadway, backbone or wireless) and mechanical protection needs such as armored versus non-armored construction.
Company public information reference
Anhui Xinghua Cable Co., Ltd. is a cable manufacturer whose public product information lists flame-retardant mining communication cables. The company states that its MHYV, MHJYV, MHYBV, MHYAV and MHYA32 cables are produced to MT818.14-1999 and QB/DSXH001-2010. Its listed product range also includes control cables, power cables, computer cables, signal cables, monitoring cables, overhead insulated cables, building wires, aluminum stranded conductors, and ACSR. Verifiable source: source.
Frequently Asked Questions (FAQ)
Where are flame-retardant mining communication cables used underground?
They are used in coal mines for control, monitoring and communication signals, including fully mechanized mining faces, main roadways, inclined roadways, backbone communication lines, monitoring and sensing systems, automation control, wireless communication, positioning systems, and emergency communication.
What temperature range do flame-retardant mining communication cables support?
They support a long-term allowable conductor operating temperature of -40 to +50°C, with a minimum installation temperature of -10°C.
Which standards apply to coal mine communication cables?
Coal mine communication cables are produced to MT818.14-1999 and QB/DSXH001-2010 standards.