Testing According to IEC 62586-2 standard

In an accredited calibration of a power quality analyzer, according to the IEC 61000-4-30 standard, the typical process involves selecting 4 or 5 points within the calibration range. A stationary waveform is generated using a calibrator, and the mean and deviation of the equipment relative to the standard used are obtained.

For example, for frequency measurement, five calibration points might be selected as follows: 230 V and 42.5 Hz, 230 V and 47 Hz, 230 V and 50 Hz, 230 V and 52.5 Hz, and finally, 230 V and 57.5 Hz. However, with the publication of the 3rd edition of this standard in 2015, a change was introduced that "invites" the testing of power quality equipment not only at "easy" points (such as the five frequency calibration points mentioned) but also at much more complex points, combining magnitudes that make compliance more challenging.

In this context, the IEC 62586-2 standard emerged, which is mandatory for new developments of power quality equipment, as specified in the IEC 61000-4-30 itself. Therefore, according to the current IEC 62586-2 standard, it is necessary to ensure that the equipment measures correctly throughout a total of 233 new tests. These tests are not only based on stationary and periodic signals (traditional points from IEC 61000-4-30), but also include many others that integrate waveforms constructed at the cycle or half-cycle level, combining influence magnitudes and much stricter temporal requirements.