Preprints are manuscripts made publicly available before they have been submitted for formal peer review and publication. They might contain new research findings or data. Preprints can be a draft or final version of an author's research but must not have been accepted for publication at the time of submission.
This paper will discuss the key applicable North
American Standards defining performance, testing, installation and routine
field maintenance of liquid-immersed distribution substation transformers.
These transformers, typically applied in commercial and industrial power
systems, can be installed either in outdoor or indoor locations, applied as
remote or close-coupled to either primary or secondary switchgear, or both. Recommendations based on these standards for
selection, installation and factory/field testing industry users should specify
to maximize reliability, operational efficiency and safety will follow.