The S18/20/22 series renewable energy (wind/PV) Scott-type transformers have a main body consisting of a three-phase two-winding oil-immersed, self-cooling, off-circuit tap-changing, fully sealed structure. They are composed of the transformer active part, tank, radiators, high and low voltage insulating bushings, oil level gauge, pressure release valve, temperature controller, conservator (generally required for capacity ≥ 630kVA), Buchholz relay, breather, etc., serving as a key core component of the Scott-type unit substation. Together with the high-voltage electrical components (HV disconnector, HV fuse, etc.), low-voltage electrical components (LV disconnector, LV current transformer, fuse, etc.), and enclosure, they form the complete Scott-type unit substation. The series offers a wide capacity range and is available for voltage levels up to and including 40.5kV.
These transformers meet the latest national energy efficiency standards, feature strong overload capability, and are energy-saving and environmentally friendly. They are suitable for urban and rural buildings, residential communities, high-tech development zones, small and medium-sized factories, mines, wind power projects, as well as wind and photovoltaic projects requiring large installed capacity per unit substation.
