Electrical warming device for electrical component e.g. machine stator, has heating current fed to both coil winding and shaft of component

摘要

The warming device (1) has a transformer (3) provided by the carrier (2.3) of the electrical component, a separate coil (3.1) supplied with an AC heating current and a core (3.2) which is fed through the component, with the coil acting as the primary side of the transformer and the carrier acting as the secondary side of the transformer.