IEC TS 62586-3:2025
(Main)Power quality measurement in power supply systems - Part 3: Maintenance tests, calibration
Power quality measurement in power supply systems - Part 3: Maintenance tests, calibration
IEC TS 62586-3:2025 Describes a procedure used for maintenance tests of individual power quality instruments. Users of these instruments need to ensure the conformity of the individual power quality instrument for stationary use with the requirements of IEC 62586‑1. This is achieved by periodic maintenance tests as defined in this document.
General Information
Standards Content (Sample)
IEC TS 62586-3 ®
Edition 1.0 2025-08
TECHNICAL
SPECIFICATION
Power quality measurement in power supply systems -
Part 3: Maintenance tests, calibration
ICS 17.220.20 ISBN 978-2-8327-0613-8
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CONTENTS
FOREWORD. 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Maintenance test . 8
4.1 Need . 8
4.2 Decision rule . 10
4.3 General . 10
4.4 Applicability of type test . 10
4.5 Clock . 11
4.6 Analogue front-end for voltage . 12
4.7 Analogue front-end for current . 14
5 Calibration of artifact reference . 15
5.1 Need . 15
5.2 Uncertainty . 15
5.3 General . 16
5.4 Calibration programme . 16
5.5 Clock . 16
5.6 Analogue front-end for voltage . 17
5.6.1 Magnitude of supply voltage . 17
5.6.2 Unbalance . 17
5.6.3 Flicker . 17
5.6.4 Harmonics . 17
5.7 Analogue front-end for current . 17
5.7.1 Magnitude of current . 17
5.7.2 Unbalance . 18
5.7.3 Harmonics . 18
5.8 Example of a calibration programme for voltage . 18
Annex A (informative) Example: Guidelines for additional integrity verification of the
portable power analyzer, if necessary, before performing a harmonic voltage study . 19
A.1 General . 19
A.2 Integrity test for the instrument . 19
A.3 Phase angle of current and voltage channels . 20
A.4 Influence factor study . 20
A.5 Influence of the anti-aliasing filter . 21
A.6 PLL error . 24
A.7 Duty factor . 24
A.8 Amplitude flatness (tilt) . 25
Bibliography . 26
Figure 1 – Block diagram showing parts whose metrological properties are subject to
ageing, and other parts . 9
th
Figure A.1 – Filtered 60 Hz square waveform with 10 order Butterworth filter tuned to
2,85 kHz . 22
th
Figure A.2 – 10 V (20 V peak-to-peak) square-wave waveform processed by a 4 order
anti-aliasing Butterworth filter tuned at 10 kHz . 23
Figure A.3 – Example of the square waveform with an error of 2,5 % on the duty cycle . 24
Figure A.4 – Example of the tilt of 25 %, which is the reduction of the amplitude by
25 % at each half cycle . 25
Figure A.5 – Square waveform with a tilt of 1,225 % . 25
Table 1 – Test: Applicability of type test (Classes A and S) . 11
Table 2 – Test: Clock (Class A) . 11
Table 3 – Test: Clock (Class S) . 12
Table 4 – Test: Analogue front-end for voltage (Class A) . 12
Table 5 – Test: Analogue front-end for voltage (Class S) . 13
Table 6 – Test: Analogue front-end for current (Class A) . 14
Table 7 – Test: Analogue front-end for current (Class S) . 15
Table 8 – Example: calibration programme for magnitude of supply voltage . 18
Table A.1 – Level of harmonic voltage produced by a 20 V peak-to-peak square
waveform in relation to the 230 V power system . 20
th
Table A.2 – Error in amplitude and angle due to the 10 order anti-aliasing
Butterworth filter tuned at 2,85 kHz . 21
Table A.3 – Error of the phase angle due to the group delay of the anti-aliasing filter . 23
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Power quality measurement in power supply systems -
Part 3: Maintenance tests, calibration
FOREWORD
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IEC TS 62586-3 has been prepared by IEC technical committee 85: Measuring equipment for
electrical and electromagnetic quantities. It is a Technical Specification.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
85/948/DTS 85/962/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Specification is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document
...
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