Method of manufacturing a transformer winding embedded in casting resin by winding coils respectively by themselves and independently of one another for disposition thereof in tandem in axial direction of the winding includes placing the wound coils in a substantially annular casting mold having an inner...http://www.google.es/patents/US4540536?utm_source=gb-gplus-sharePatente US4540536 - Method of manufacturing transformer windings embedded in casting resin
Method of manufacturing transformer windings embedded in casting resin