DOE Appliance Standards for External Power
The U.S. Department of Energy (DOE) has recently proposed new energy conservation standards for External Power Supplies (EPSs).
The U.S. Department of Energy (DOE) has recently proposed new energy conservation standards for External Power Supplies (EPSs). These proposed standards, known as Trial Standard Level 4 (TSL4), aim to tighten energy efficiency requirements across all types of EPSs. TSLs are a tool used by the DOE to set energy conservation benchmarks.
2. History of Standards Rulemaking for External Power Supplies amended sections 321, 323, and 325 of EPCA (42 U.S.C. 6291, 6293, and 6295). As part power of no more than 250 watts (W).
Labeling requirements will be mandated to meet the same International Eficiency Marking Protocol for External Power Supplies Version 3.0 as the previous Level V standard. Globally, it is expected that other nations will soon follow suit with the DoE Level VI standard.
It started with relatively simple ENERGY STAR standards for external power supplies in the 1990s. Today, there are standards tailored for the specific operating conditions of various applications, ranging from data center power supplies to white goods, LED light bulbs, electric vehicle battery chargers, photovoltaic inverters, and others.
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