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Division Power Supply Efficiency Requirements

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Type 1 DFE Using an Internal AC-DC Power Supply: A DFE that gets its DC power from its own internal AC-DC power source must meet the following power supply efficiency requirement: 80 % minimum efficiency at 20 %, 50 %, and 100 % of rated output and Power Factor ≥ 0.9 at 100 % of rated output.

Type 1 DFE Using an External Power Supply: A DFE that gets its DC power from its own external power supply (as defined by the ENERGY STAR V2.0 Programme Requirements for Single Voltage AC-AC and AC-DC External Power Supplies) must be ENERGY STAR-qualified or meet the no-load and active-mode efficiency levels specified in the ENERGY STAR V2.0 Programme Requirements for Single Voltage AC-AC and AC-DC External Power Supplies. The ENERGY STAR specification and qualified product list can be found at: www.energystar.gov/powersupplies.

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