DDF Measurements on Stator Windings – Part 1 Survey Answers

In the field of rotating electrical machines, the Dielectric Dissipation Factor (DDF) measurement is used for assessing the condition of the electrical insulation system and the manufacturing quality of individual stator bars/coils and stator windings. The technical brochure provides the results of an internationally distributed survey regarding operator and manufacturer practices concerning DDF measurements dedicated to complete windings (new and in-service).