Electric Drill Cable with Voltage of 0.3/0.5kV for Coal Mine

1. Scope of Application
This product is suitable for power supply connection of electric drills with rated voltage below 0.3/0.5kV in coal mines.

2. Standards Implemented
MT 818.1-2009 Cables for Coal Mines: Part 1: Mobile flexible cables for coal mines - General provisions.
MT 818.8-2009 Cable for Coal Mine: Part 8: Electric drill cable for coal mine with rated voltage of 0.3/0.5kV.

3. Features
The conductor of this cable adopts the same-direction structure, which not only improves the flexibility of the cable, but also reduces the outer diameter of the cable; XJ-30A ethylene-propylene rubber is used for insulation of power wire core, and XH-03A chloroprene rubber is used for outer sheath. The flame retardant grade meets the requirements of MT386-2011 Test Methods and Judgment Rules for Flame Retardancy of Flame Retardant Cables for Coal Mines. By adopting the above materials and technologies, the safety and reliability of cable operation are ensured.

4. Model, Name and Use of Cable

5. Cable Structure Diagram

6. Cable Working Conditions
6.1 The rated voltage Uo/U is 0.3/0.5kV.
6.2 The minimum bending radius of cable is 6 times of the cable diameter.
6.3 The ground wire of cable shall be well grounded.

7. Power Frequency Voltage Test
Insulated power wire core and control wire core shall go through the power frequency voltage test specified in Table 4 and shall not breakdown.

Table 2