Energy Conservation Program: Test Procedure for Distribution Transformers

The U.S. Department of Energy (``DOE'') is initiating a data collection process through this RFI to consider whether to amend DOE's test procedure for distribution transformers. To inform interested parties and to facilitate this process, DOE has gathered data, identifying several issues associated with the currently applicable test procedure on which DOE is interested in receiving comment. The issues outlined in this document mainly concern the degree to which the per-unit load (``PUL'') testing measurement accurately represents in- service distribution transformer performance, and provides test results that reflect energy efficiency, energy use, and estimated operating costs during a representative average use cycle of an in-service transformer; sampling; representations; alternative energy determination methods (``AEDMs''); and any additional topics that may inform DOE's decisions in a future test procedure rulemaking, including methods to reduce regulatory burden while ensuring the procedure's accuracy. DOE welcomes written comments from the public on any subject within the scope of this document (including topics not raised in this RFI).