If our PSU model fails its initial certification test, can we resubmit it after making improvements?
Yes, models that do not meet the 80 PLUS® performance specification during their first evaluation may be modified and resubmitted for testing. Each resubmission is treated as a new application and requires the standard certification fee. We recommend a thorough engineering review to address the specific efficiency or power factor shortfalls identified in the initial test report before beginning a new certification attempt.
What are the requirements for ITHD (Input Total Harmonic Distortion) in 80 PLUS® certification?
The 80 PLUS® certification program does not specify pass/fail thresholds for Input Total Harmonic Distortion (ITHD). ITHD is measured across various load conditions and reported in the test data set to assess power quality. The testing methodology follows IEC 62301 for general test conditions and standby power measurements, with harmonic measurements, including ITHD, conducted per IEC 61000-4-7 to ensure accurate and consistent harmonic distortion analysis.
How do we ensure accurate and comprehensive data capture during power supply testing?
We take pride in our rigorous data capture process, ensuring that every aspect of power supply performance is thoroughly monitored. Here’s an overview of how our data collection works, broken down by different measurement types and their corresponding data points:
How do you calculate derating factors for multi-rail power supplies?
Please reference the Test Protocol for more information. Generalized Test Protocol for Calculating the Energy Efficiency of Internal Ac-Dc and Dc-Dc Power Supplies, section 6.1.1 Proportional allocation method for loading multiple and singleoutput ac- dc and dc-dc power supplies
Given:
How are derating factors determined for multi-rail power supplies with subgroup limits?
Reference: Generalized Test Protocol for Calculating the Energy Efficiency of Internal Ac-Dc and Dc-Dc Power Supplies, section 6.1.1 Proportional allocation method for loading multiple and single-output ac- dc and dc-dc power supplies.
For this specific power supply, we have a sub-group current limited factor in the railing system
What Information Do We Use from the Power Supply Label and the Manufacturer's Order Application?
The Order Application:
From the order application submitted by the manufacturer, we use the following in the report: