Specially designed for YJV/YJLV series cables (suitable for 50-400mm ² cross-section), using an integrated stress cone and composite insulation structure (inner semiconducting layer+XLPE+anti trace layer), passing GB/T 18889-2021 type test, with temperature resistance of -40 ℃~105 ℃, lightning impulse withstand voltage of 170kV, and three-phase electric field deviation<8%. The diameter is reduced by 35% compared to traditional solutions, making it suitable for compact spaces in substation switchgear.