Abstract: A method for impregnating at least one wire winding of a component. The at least one wire winding has a winding head on at least one end side of opposing end sides of the component and runs in an intermediate region between the end sides along an extension direction of the component. The method includes: heating the component ; aligning the component so the extension direction runs vertically and the winding head is on the vertically upper end side; applying an impregnating material, to at least one first component region of the component on the vertically upper end side to coat the winding head with the impregnating material so the impregnating material flows from the winding head, via the intermediate region, in the direction of the vertically lower end side according to the force of gravity and/or capillary action; and solidifying the impregnating material.

Abstract: A test device to localize a partial discharge in or at an electrical component may include at least one antenna to capture an electromagnetic wave caused by a partial discharge in the electrical component. The test device includes multiple microphones arranged in an environment around the electrical component. The microphones capture sound waves caused by the partial discharge. It is examined if an intensity of the electromagnetic wave exceeds a first limit value and/or the intensity of the sound wave captured by one of the multiple microphones exceeds a second limit value. Depending on the captured sound wave and/or the electromagnetic wave and on the examination relating to the first and/or second limit value, a location of the partial discharge can be determined.

Abstract: A test device to localize a partial discharge in or at an electrical component may include at least one antenna to capture an electromagnetic wave caused by a partial discharge in the electrical component. The test device includes multiple microphones arranged in an environment around the electrical component. The microphones capture sound waves caused by the partial discharge. It is examined if an intensity of the electromagnetic wave exceeds a first limit value and/or the intensity of the sound wave captured by one of the multiple microphones exceeds a second limit value. Depending on the captured sound wave and/or the electromagnetic wave and on the examination relating to the first and/or second limit value, a location of the partial discharge can be determined.