The U.S. Department of Energy (DOE) has just released a final ruling for the test procedures to be used with its 2016 external power supply (EPS) efficiency standard.
It's been over a year since the DOE issued a notice of proposed rulemaking (NOPR) suggesting amendments to the test procedure to support the much tighter and more expanded Level VI EPS efficiency requirements.
The approved amendments/changes include:
- Clarifying which EPS products are subject to the energy standards and outlining which sets of standards apply to each type of EPS.
- Harmonizing the current test procedure with the latest version of IEC 62301. (IEC 62301 is an international standard that specifies electrical power consumption test methods in standby and other low power modes.)
- Outlining test configurations to avoid losses caused by testing cables.
- Defining and clarifying test methods for adaptive EPSs (also known as "adaptive-charging", "smart-charging" or "quick-charging" EPSs). The current test method didn't address adaptive EPSs due to the lack of data when the procedure was first being developed.
- Clarifying the test method for EPSs incapable of being tested at one or more of the loading conditions used to calculate the average active-mode efficiency. The average active-mode efficiency will now be determined by averaging the efficiency results at the measurable loading conditions.
- Incorporating text from the California Energy Commission's (CEC) EPS test method.
It's important to note that the test procedure changes do not affect the mandatory Level VI efficiency requirements. To download a copy of the final test procedure ruling, click here. For more information on the DOE's 2016 EPS efficiency requirements, click here.