Method for Measuring Laboratory Power Source Characteristics and Case Analysis
Power source characteristics measurement constitutes a crucial component of CB laboratory and CNAS labo-ratory accreditation requirements,and the laboratory's power source characteristics significantly impact the accuracy of electrical and electronic product testing results. In accordance with the guidance on the application of CNAS accredited laboratories competence criteria in the field of electrical testing (CNAS-CL01-A003:2019) and the testing laboratory operation document established by the IECEE CB Scheme (OD5010),along with the test conditions defined within the testing standard. This article describes in detail the power source characteristics and requirements,power source char-acteristics measure methods,measurement steps,and illustrate how to utilize the measurement methods and measure-ment steps to measure power source characteristics and evaluate the results of the power supply under specified testing conditions through cases. Finally,this article summarizes the basic principle of power source characteristics measure-ment and the treatment method when the power source characteristics cannot meet the requirements under full load. The research on measurement methods for laboratory power characteristics is of great significance and influence in improving the accuracy of laboratory measurement results,promoting data mutual recognition and trust,enhancing laboratory com-petitiveness,and international cooperation.
power characteristicsverification methodCB laboratoryCNAS accreditedcase analysis
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