Medium Voltage Cable Application and Selection Guide for New Energy Projects
In wind and solar power projects, 35kV has established itself as the de facto standard voltage level for collector lines. But specifying that on a drawing is one thing—actually selecting the right cable, from conductor material to insulation type, from armouring structure to flame retardant rating, is a decision that directly affects project safety and economics over the entire lifecycle. This guide walks through the selection logic for 35kV medium voltage cables , grounded in real-world project conditions. Why 35kV Became the Go-To for New Energy Projects The electrical topology of a typical onshore wind farm or large-scale solar PV plant follows a consistent path: the generator or array output (690V or 10kV) first passes through a local step-up transformer to reach 35kV, then travels via collector lines to the main step-up substation, where it is boosted again for grid connection. Three objective factors explain why 35kV has become the mainstream choice f...
