1. Product executive standard

Enterprise standards.

2. Product application scope

Mvfp-0.38/0.66 is suitable for the control system of frequency conversion device of coal mine with rated voltage of 0.38/0.66kv as power supply cable or electrical connection, only suitable for fixed laying, not suitable for frequent moving, winding, bending, retracting and releasing.

Mvfp-0.66/1.14 is suitable for the control system of frequency conversion device of coal mine with rated voltage of 0.66/1.14kv as power supply cable or electrical connection, only suitable for fixed laying, not suitable for frequent moving, winding, bending, retracting and releasing.

Mvfp-1.9 / 3.3 is suitable for the control system of frequency conversion device of coal mine with rated voltage of 1.9/3.3kv as power supply cable or electrical connection, only suitable for fixed laying, not suitable for frequent moving, winding, bending, retracting and releasing.

3. Product use characteristics

3.1. Rated voltage: 0.38/0.66kv, 0.66/1.14kv, 1.9/3.3kv.

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, 1.9/3kv voltage: 6.8kv/5min without breakdown.

4. Main technical indexes of cable

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

4.2. Insulating material: the insulating rubber based on ethylene propylene rubber shall meet the requirements of xj-30a type in gb7594.8, but the tensile strength shall not be less than 6.5MPa.

4.3. Core identification: 0.66/1.14kv and below main core: red, white, blue, ground wire: black

1.9/3.3kv main core: code or color yarn identification, ground wire: black.

4.4. Sheath: the sheath rubber or other materials with similar performance using neoprene as the base material shall meet the requirements of xh-03a in GB / T 7594.7, and the tear strength shall not be less than 5.0n/mm.