IEC 61000-4-30 Class A takes the guesswork out of selecting power quality instruments. Power quality logging, measurement and analysis is still a relatively new and quickly evolving field. Where basic electrical measurements like RMS voltage and current have well-defined measurement parameters, many power quality parameters have no such definition. This has forced manufacturers to develop their own algorithms for measuring power quality properties, resulting in hundreds of measurement methods. With so much variability between instruments, technicians must often spend time trying to analyse and understand the instrument’s capabilities and measurement algorithms instead of understanding the quality of the power itself. Standardising on measurement methods creates the ability to compare results from different analysers directly. The IEC 61000-4-30 Class A standard defines the measurement methods, time aggregation, accuracy and evaluation for each power quality parameter to obtain reliable, repeatable and comparable results. Additionally, the IEC 62586 defines the minimum set of parameters that must be implemented for power quality instruments used in both portable and fixed installations.
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