Method and device for determining moisture content and for drying an insulation

摘要

The method involves measuring a dielectric response of a paper insulation. An insulation moisture content is determined based on the response. Information displaying an influence of a geometry of the insulation on the response, is determined based on the response. A moisture content of a press board (18) of the insulation is determined based on the insulation moisture content and the information. The insulation moisture content is determined as the board moisture content if the information for successive measurements of the response displays constant influence of the geometry on the response. Independent claims are also included for the following: (1) a device for determining a moisture content of a component of an insulation of an electrical operating unit (2) a drying device.