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Introduction to various types of cables: mining cables
2026-04-16
(Disclaimer: Some of the information in this article is sourced from the internet. Please carefully identify and use it.)
Mining cables are special cables designed specifically for mining environments, which must meet strict requirements for safety, flame retardancy, and corrosion resistance. They are widely used in surface and underground equipment of metal/non-metal mines in coal mines. Here is an analysis of its core points:
1. Definition and Core Features
1. Basic Definition
Mining cables are key equipment for power transmission control and communication in mines, and must pass coal safety certification (MA) or mine safety certification (KA) to ensure safe operation in environments with high flammability, humidity, and mechanical stress.
2. Core Features
Flame retardancy
By conducting bundled combustion tests (as required by GB 43069-2023), the spread of fire is prevented.
Mechanical damage resistance
Tensile strength ≥ 15MPa (such as MYP cable), bending radius ≥ 6 times outer diameter.
Environmental adaptability
Acid and alkali resistant, UV resistant (working temperature of -35 ℃~90 ℃).
2. Classification and Common Models
1. According to voltage level
| Type | Voltage range | Typical model | Application scenarios |
|---|---|---|---|
| Low voltage cable | 300/500V-1.14kV | MYQ (Mining Light Rubber Jacket) | Underground lighting signal equipment |
| Medium and high voltage cables | 1.9/3.3kV-10kV | MYPTJ (Metal Shielded Monitoring Type) | High voltage power supply system for coal mining machine |
2. According to function and structure
- Mobile flexible cable: such as MCP (shielded cable for coal mining machine), containing tin plated copper wire shielding layer.
- Fixed cable laying: such as MYJV (cross-linked polyethylene insulation), used for underground fixed power distribution.
- Special cables: such as UGF (high voltage mining rubber sleeve), drag resistant and flame-retardant.
3. Usage requirements and structural characteristics
| Usage characteristics | Structural characteristics |
|---|---|
| 1. The scope of application is very wide, mainly used for specialized cable products for mining industry surface and underground equipment, involving mining drill cables, communication and lighting equipment cables, mining and transportation cables, cap light cables, and underground mobile substation power cables. 2. The usage environment of mining cables is very complex, the working environment is very harsh, and gas and coal dust accumulate, which can easily cause explosions. Therefore, the safety requirements for cables are very high. 3. This product requires frequent movement, bending, twisting, etc. during use, so it requires soft wires, stable structure, and resistance to twisting, as well as a certain degree of abrasion. | 1. Conductive wire core: made of copper core, with a flexible structure, composed of multiple single wire bundles twisted together. Flexible wire conductors generally use Class 5 or Class 6 conductor structures. 2. Insulation: Insulation materials are generally made of rubber. 3. The multiple of cable pitch is relatively small. 4. Many products use metal weaving, uniform electric field, and improve insulation sensitivity display. 5. There is a thicker outer sheath, and color separation treatment is carried out underground to enable construction personnel to understand the different voltage levels used for cables. |
4. Selection and Construction Points
1. Selection criteria
- Installation method: Flexible cables (such as MCPTJ) are selected for mobile devices, and armored cables (such as MYJV22) are selected for fixed lines.
- Flame retardant grade: High gas mines require Class A flame retardant (WDZA-YJY).
2. Construction specifications
The shielding layer needs to be grounded 360 ° to avoid parallel laying with power cables (spacing ≥ 30cm).
5. Industry Trends
- Intelligent upgrade: Integrate fiber optic units (such as MYFTJ) to achieve real-time data monitoring.
- Environmentally friendly materials: The proportion of halogen-free sheaths (LSZH) has increased, complying with the RoHS directive.
※ If you need to purchase Cable Materials, you can choose Wuxi Henglong Cable Material Co., Ltd., a well-known manufacturer in the Chinese cable materials industry.
