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Radian Research, Inc. is a recognized world leader of Energy Reference Standards, Energy Meter Testing Systems, Current Transformer Testers, Meter Test Boards, DC to AC Transfer Standards, and Automated Laboratory Energy Reference Systems. Radian provides both portable and primary energy reference standards that are absolutely unequaled in accuracy, stability and reliability. Radian customers typically consist of electric utility companies, energy meter manufacturers, energy meter test system manufacturers and national metrology institutes located throughout the world. Radian Energy Reference Standards and Test Equipment supports the needs of ANSI C12.20, IEC 62052 and IEC 62053 standards.
IEC/AS Standard 62053-11 covers Accuracy Class 0.5, 1.0 and 2 for electromechanical meters for active energy (watt-hours) - this means the accuracy as a percentage from reading under full load conditions and unity power factor. However, the accuracy deteriorates under lower load conditions when power factor is less than unity.
IEC/AS Standard 62053-21 covers Accuracy Class 1.0 and 2 for static/electronic meters for active energy (watt-hours), which means the accuracy as a percentage from reading based on full load conditions and unity power factor. However, the accuracy deteriorates under lower load conditions, power factor less than unity along with the presence of harmonics.
IEC/AS Standard 62053-22 covers a higher Accuracy Standard of 0.2S and 0.5S for static/electronic for active energy (watt-hours) providing a higher Accuracy Standard under full load conditions and unity power factor, in addition to better accuracy readings at much lower load currents, power factor conditions less than unity along with the presence of harmonics.
