Method and arrangement for reactor manufacturing, and a reactor

A reactor (1) is manufactured such that in a first step resin-dipped fibrous reinforcement material, such as roving thread (11), is wound to form a cylinder. On top of the obtained insulation layer there is wound an insulated conductor (5) to form a conductor layer (8). On the conductor layer (8) there is wound an intermediate layer (9) of resin-dipped fibrous reinforcement material. On the intermediate layer (9) there is wound a new insulated conductor layer (5). On top of the outermost conductor layer (5) there is wound an outer layer (7) of resin-dipped fibrous reinforcement material.