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Comments Sought on Revised Energy Test Procedures for External Power Supplies

The U.S. Department of Energy (DOE) is seeking input by 4 February on a proposal to revise its energy test procedures for external power supplies (EPSs). Specifically, the agency is proposing to add a definition for “commercial and industrial power supply” in its regulations to differentiate between EPSs and other non-consumer power supplies that are not subject to the test procedures. Also under consideration is a definition to address an adaptive EPS that conforms to the Universal Serial Bus Power Delivery (USB-PD EPS) specifications as well as a revision to address testing in a manner more representative of actual use.

Additionally, the revised procedures would provide more specific instructions for testing single-voltage EPSs that have multiple output busses. Lastly, the DOE is proposing to reorganise the test procedures to centralise definitions, consolidate generally applicable requirements, and better delineate requirements for single-voltage, multiple-voltage and adaptive EPSs.

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