1. Product executive standard

MT 818-2009 / enterprise standard.

2. Product application scope

Myptj-3.6/6, myptj-6 / 10 and myptj-8.7/10 are applicable to the power connection of underground mobile transformer and similar equipment, and are not applicable to frequent movement, winding, bending, retraction and release.

3. Product use characteristics

3.1. Rated voltage: 3.6/6kv, 6 / 10kV, 8.7/10kv.

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: 3.5uo, no breakdown.

3.7. Partial discharge test: the discharge capacity of the cable is & le; 20pc under the test voltage of 1.73 U0.

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 performance of EPDM based insulating rubber shall meet the requirements of xj-30a type in GB / T 7594.8, and the tensile strength shall not be less than 6.5MPa.

4.3. Core identification: main core: coding or color yarn identification.

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.