Mining cable, as the name suggests, refers to coal mining cables. Mining cables are flame-retardant and must obtain a mining product safety certificate from the National Standards and Safety Center. This includes the flame retardant mechanism of mining cables: flame retardants are added to the insulation and sheathing materials of mining cables, and the heat of the combustion reaction is in the condensation stage. There are many types of mining cables, and different types are designated differently.
Mining Cable Models
The cable name consists of eight parts.
The first part is the series code M, which is the pinyin for "coal" (coal).
The second part is the usage code, which reflects the application of the cable. The letters represent: C, for coal mining machines; D, for low-temperature environments; M, for cap lamps; Y, for coal mining equipment (mobile); Z, for electric drills.
The third part is the structural feature code, which indicates the cable's structural characteristics. The letters represent: B, braided reinforcement; J, with monitoring core; P, non-metallic shield; PT, metallic shield; Q, lightweight; R, reinforced wrap.
The fourth section is the material characteristic code. E indicates that the insulation or sheath is made of an elastomer. This section is omitted if both the insulation and sheath are made of rubber. E stands for elastomer.
The fifth section is the rated voltage U0/U (kV).
The sixth section is the number of power conductor cores * nominal cross-sectional area. A multiplication sign is used to connect the two, and the unit is square millimeters.
The seventh section is the number of ground conductor cores * nominal cross-sectional area. A multiplication sign is used to connect the two, and the unit is square millimeters.
The eighth section is the number of auxiliary conductor cores * nominal cross-sectional area. A multiplication sign is used to connect the two, and the unit is square millimeters.
The fourth and fifth sections are connected by a "-"; the sixth, seventh, and eighth sections are connected by a "+".
Mining Cable Product Designation
Products are designated by model, specification, and standard number.
1) Coal mining machine shielded rubber-sheathed flexible cable, rated voltage 0.66/1.14 kV, power conductor core 3x50, ground conductor core 1x10, control conductor core 4x4, with semi-conductive shield. Designated as: MCP-0.66/1.14 3x50+1x10+4x4 MT818.2-1999
2) Coal mining machine shielded monitoring braided reinforced rubber-sheathed flexible cable, rated voltage 0.66/1.14 kV, power conductor core 3x50, ground conductor core 1x25, control conductor core 2x2.5, with semi-conductive shield, monitoring conductor core, and braided reinforcement. Designated as: MCPJB-0.66/1.14 3x50+1x25+2x2.5 MT818.3-1999
3) Coal mining machine metal shielded monitoring rubber-sheathed flexible cable, rated voltage 0.66/1.14 kV, power conductor 3*70, ground conductor 1*25, monitoring conductor 1*35, with metal shield, designated as MCPTJ-0.66/1.14 3*70+1*35+1*35 MT 818.4-1999
4) Mobile elastomer flexible cable for coal mining, rated voltage 0.38/0.66 kV, power conductor 3*25, ground conductor 1*16, unshielded, designated as MYE-0.38/0.66 3*25+1*16MT818.5-1999
5) Mobile metal-shielded monitoring rubber-sheathed flexible cable for coal mines, rated voltage 3.6/6kV, power conductor 3*35, ground conductor 3*16/3, monitoring conductor 3*2.5, with semi-conductive shield, designated: MYPTJ-3.6/6 3*35+3*16/3+3*2.5MT818.6-1999
6) Mobile shielded rubber-sheathed flexible cable for coal mines, rated voltage 3.6/6kV, power conductor 3*25, ground conductor 1*16, for low-temperature environments, with semi-conductive shield, designated: MYDP-3.6/6 3*25+1*16 MT818.7-1999
7) Shielded elastomer cable for electric drills in coal mines, rated voltage 0.3/0.5 kV, power conductor 3*4, ground conductor 1*4, designated as: MZPE-0.3/0.53*4+1*4 MT818.8-1999
8) Mobile lightweight rubber-sheathed flexible cable for coal mines, rated voltage 0.3/0.5 kV, insulated conductor 3*2.5, unshielded, designated as: MYQ-0.3/0.5 3*2.5 MT818.9-1999
9) Miner's cap lamp cable for coal mines, insulated conductor 2*0.75, designated as: MM 2*0.75MT818.10-1999
The above mining cable models refer to those specified in MT818. According to the national standard GB12972, the series code is U, which is the second letter of the pinyin for "mining," as the first letter "K" is already occupied by control cable. The remaining codes are essentially the same.
This type of cable is only used in specific areas in our daily lives, specifically for power connections for various underground mobile coal mining equipment. After reading the above explanations of different models, it's clear that the word "cable" encompasses a vast amount of content and knowledge. Even a basic understanding will allow us to appreciate its appeal. We hope that this article on mineral cables will open a new chapter in our understanding of cables.
