Lightning Protection of Distribution Capacitor Controllers

Basic recommendations are provided for enhancing the reliability of new and existing capacitor controller installations by optimizing their resistance to surges. The sources and types of surges commonly experienced by capacitor controllers are discussed with consideration given to circuit parameters that can influence the magnitude of surges reaching the controller. Different controller surge protection configurations are examined including providing auxiliary secondary-side surge protection. The discussion culminates with some basic surge protection recommendations to enhance the lightning performance of capacitor controllers