What is the purpose of compressing cable conductors during manufacturing?

Compressing cable conductors serves multiple technical purposes: it smooths the conductor surface to achieve uniform electric field distribution and ensures tight insulation wrapping, reducing the risk of partial discharge. Additionally, compressed conductors have a smaller outer diameter, which saves insulation and sheath materials. The minimized gaps between strands also prevent moisture ingress and water treeing, while lowering contact resistance to improve current-carrying capacity.