Report of PD and breakdown behaviour of components exposed to high voltage gradients including verification methods; including results of WP2

A report of the activity will be delivered. The report will focus on the impact of increasing slew rates on the partial discharge and breakdown behaviour of typical components used in the aerospace environment (including the impact of varying pressure, humidity and temperature). The document will define the list of materials subjected to investigation. This will include materials already adopted in aerospace applications and materials, not already certified, but that are likely to be used. The document will derive guidelines to (a) prevent PD inception when the aircraft is cruising at high altitudes and (b) to understand the voltage to apply during quality tests carried out on complete stators at the ground level. Then, it will identify tests/methods for the verification and qualification of new insulation systems.