A B S T R A aThe system and transformer characteristics which can result in overvoltages and ferroresonance when energizing grounded-wye/ grounded-wye distribution transformers from a remote location with single-pole switches are defined.A qualitative analysis of a system typical of those installed today is presented to show how the overvoltages can occur during single-pole switching. Full-scale laboratory tests were conducted to determine maximum overvoltages and obtain a better understanding of the phenomenon. The results show that distinct responses occur during the single-pole energization, and ferroresonance can occur contrary to statements appearing in many references.
The Task Force was formed in response to a proposal that a secondary, or low-side, current surge withstanddesign test be included in the IEEE test standards. It was charged with reviewing all information on low-side surges and determining if revisions of dielectric tests of distribution transformers are indeed warranted. Althoughagreement on astandard test has not
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.