Analysis of the AC-contactor electrical behavior under voltage dips

This paper proposes a study of the AC contactor coil responses under voltage dips with different magnitude and duration. Existing standards and previously published work are reviewed and related to the obtained results, and a detailed description of the testing procedure is presented. Considering few previous contributions have been reported on the AC contactor electrical behavior under voltage dips, the main contribution of this work is focused on identifying from the experiments performed the presence of a relevant scatter-band where the sensitivity of contactors in the presence voltage dips responds to stochastic issues.