scope:

This standard specifies functional tests and uncertainty requirements for instruments whose functions include measuring, recording, and possibly monitoring power quality parameters in power supply systems, and whose measuring methods (class A or class S) are defined in IEC 61000-4-30. This standard applies to power quality instruments complying with IEC 62586-1. This standard may also be referred to by other product standards (e.g. digital fault recorders, revenue meters, MV or HV protection relays) specifying devices embedding class A or class S power quality functions according to IEC 61000-4-30. These requirements are applicable in single, dual - (split phase) and 3-phase a.c. power supply systems at 50 Hz or 60 Hz. NOTE 1 It is not the intent of this standard to address user interface or topics unrelated to device measurement performance. NOTE 2 The standard does not cover postprocessing & interpretation of the data, for example with a dedicated software.