20kv 35kv SIP-3 Self-Supporting Insulated Wire Cable Aluminum Alloy XLPE for Overhead Available Sizes 1X35 1X50 1X70 1X95 1X120​ The 20kV/35kV SIP-3 Self-Supporting Insulated Wire Cable represents a breakthrough in high-voltage overhead distribution, featuring a single aluminum alloy conductor (1X35 to 1X120mm²) with integrated XLPE insulation and structural support. Crafted from 6201-T81 aluminum alloy (52% IACS conductivity), it eliminates separate messenger wires, reducing installation complexity by 40%.​ Each size delivers tailored current capacities: 1X35 (130A), 1X50 (165A), 1X70 (205A), 1X95 (250A), 1X120 (290A) at 90°C, suitable for 20kV/35kV transmission. The SIP-3 design combines conductor, XLPE insulation (3.4mm thickness), and weatherproof jacket in one self-supporting unit, spanning 100m without intermediate poles.​ UV-stabilized XLPE withstands -40°C to 90°C, ensuring 30-year service. Compliant with IEC 60502-2 and ASTM B800, it balances tensile strength (180MPa) and lightweight handling (1.2-2.8kg/m), ideal for urban, rural, and industrial overhead networks requiring high-voltage reliability.