1. Product executive standard

Enterprise standards.

2. Product application scope

Wd-my-0.38/0.66: it is applicable to the power connection of various underground mobile coal mining equipment with rated voltage of 0.38/0.66kv, and it is not applicable to the places with frequent winding and retraction.

Wd-myp-0.38/0.66: it is applicable to the power connection of various underground mobile coal mining equipment with rated voltage of 0.38/0.66kv, and it is not applicable to the places with frequent winding and retraction.

Wd-myp-0.66/1.14kv: suitable for power connection of various underground mobile mining equipment with rated voltage of 0.66/1.14kv, not suitable for frequent winding and retraction.

3. Product use characteristics

3.1. Rated voltage: 0.38/0.66kv, 0.66/1.14kv.

3.2. The maximum allowable working temperature of conductor is 90 ℃, and the maximum temperature of conductor in case of short circuit (the short circuit time shall not exceed 5S) is 250 ℃.

3.3. The minimum bending radius of cable is 6 times of cable diameter.

3.4. The normal applicable ambient temperature of the cable is - 25 ℃ ~ + 65 ℃..

3.5. The flame retardant performance of the cable shall meet the requirements of flame retardant performance in MT 818-2009.

3.6 power frequency withstand voltage of cable: 0.38/0.66kv voltage: 3.0kv/5min without breakdown, 0.66/1.14kv voltage: 3.7kv/5min without breakdown.

4. Main technical indexes of cable

4.1. Conductor structure: bare copper conductor, conforming to the 5th soft copper conductor in GB / T 3956.

4.2. Insulating material: the power wire core is made of ethylene propylene rubber as the base material. Its performance shall comply with the provisions of xj-30a type in GB / T 7594.8, and its tensile strength shall not be less than 6.5MPa.

4.3. Core identification: main core: red, white, blue, ground core: black.

4.4. Sheath: it shall comply with XH & mdash; 03A in GB / T 7594.7, and its tear strength shall not be less than 5N / mm, and shall also meet the performance requirements of low smoke halogen-free flame retardant mixture.