This part of IEC 62586 specifies product and performance 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.
These requirements are applicable in single, dual- (split phase) and 3-phase AC power supply
systems at 50 Hz or 60 Hz.
These instruments can be used:
• in the generation, transmission and distribution of electricity, for example inside a power
station, substation or a distributed generator connection;
• at the interface point between the installation and the network, e.g. in order to check the
compliance of the connection agreement between a network operator and the customer.
These instruments are fixed-installed or portable. They are intended to be used both indoors
and/or outdoors.
Devices such as digital fault recorders, energy/power meters, protection relays or circuit
breakers can include power quality functions of class A or class S defined in IEC 61000-4-30.
If such devices are specified according to this document, then this document fully applies and
applies in addition to the relevant product standard. This document does not replace the
relevant product standard.
This document does not address the user interface or topics unrelated to measurement
performance of device.
This document does not cover post-processing and interpretation of the data with, for example,
dedicated software.