MYPTJ 3*25 high-voltage rubber-sheathed cable, 6kV high-voltage coal mine cable
1. The insulation resistance between the cable's insulated main cores and between the main cores and the ground wire shall be no less than 100 MΩ·km at +20°C.
2. The transition resistance of the main core shield shall be no more than 3 kΩ at 20°C.
3. Product standard: MT818.5-1999.
4. MYPTJ cable consists of three insulated, shielded main cores and a ground wire covered with a semi-conductive rubber layer, twisted together around a semi-conductive rubber core. The outer sheath is extruded with a black chlorinated polyethylene rubber or black neoprene rubber jacket.
5. Conductive core: Soft copper wire, with performance conforming to GB/T3956-1997.
6. Insulation: Uses XJ-00A rubber, as specified in GB7594.2-1987. 7. Wire Identification: Insulation color coding is used for identification, with main wire cores colored red, green, and white.
8. Ground Wire: Covered with semi-conductive rubber.
9. Insulation Shield: Cover the insulation surface with semi-conductive tape.
10. Cable Assembly: Three main wire cores and one ground wire are twisted together in a right-hand direction around a semi-conductive rubber core.
11. Jacket: Use XH-03A rubber as specified in GB7594.7-1987. The oxygen index of the jacket rubber must be ≥40.
