The copper-aluminum transition span is suitable for the transition connection between the aluminum wire of the power line and the incoming wire, and the connection of the copper wire of the power line and the incoming aluminum wire. Product Features: 1. Friction welding process, compact and reasonable structure 2. Reliable contact, low temperature rise, easy installation 3. The jacket insulation is very reliable Insulation cover features: 1. Power frequency withstand voltage: ≥18kV hold voltage for 1 minute without breakdown 2. Insulation resistance: >1.0×1014Ω 3. Ambient temperature: -30℃~90℃ 4. Weather resistance: good performance after 1008 hours of artificial weather aging test