EN 62586-2:2017

Power quality measurement in power supply systems - Part 2: Functional tests and uncertainty requirements

IEC 62586-2:2017(E) 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 document applies to power quality instruments complying with IEC 62586-1. This document can 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 AC power supply systems at 50 Hz or 60 Hz. This second edition cancels and replaces the first edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - test procedures for RVC and current have been added; - mistakes have been fixed.

Messung der Spannungsqualität in Energieversorgungssystemen - Teil 2: Funktionsprüfungen und Anforderungen an die Messunsicherheit

Mesure de la qualité de l'alimentation dans les réseaux d'alimentation - Partie 2: Essais fonctionnels et exigences d'incertitude

L'IEC 62586-2:2017 spécifie les essais fonctionnels et les exigences d'incertitude pour les instruments dont les fonctions incluent la mesure, l'enregistrement et, éventuellement, la surveillance des paramètres de qualité de l'alimentation dans les réseaux d'alimentation, et dont les méthodes de mesure (classe A ou classe S) sont définies dans l'IEC 61000-4-30. La présente norme s'applique aux instruments de qualité de l'alimentation conformes à l'IEC 62586-1. Cette norme peut également apparaître sous forme de référence dans d'autres normes de produits (p. ex. sur les enregistreurs de défauts numériques, les appareils de mesure des revenus, les relais de protection MV ou HV) spécifiant des appareils incorporant des fonctions de qualité de l'alimentation de classe A ou de classe S selon l'IEC 61000-4-30. Ces exigences sont applicables aux réseaux d'alimentation en courant alternatif monophasés, biphasés (phase divisée) et triphasés à 50 Hz ou 60 Hz. Cette deuxième édition annule et remplace la première édition parue en 2013. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - ajout des procédures d'essai des RVC et du courant; - correction d'erreurs. La présente version bilingue (2017-11) correspond à la version anglaise monolingue publiée en 2017-03. La version française de cette norme n'a pas été soumise au vote.

Merjenje kakovosti električne energije v napajalnih sistemih - 2. del: Zahteve za funkcionalne preskuse in negotovost (IEC 62586-2:2017)

Standard IEC 62586-2:2017(E) določa zahteve za funkcionalne preskuse in negotovost za instrumente, katerih funkcije zajemajo merjenje, beleženje in morebitno nadzorovanje parametrov kakovosti električne energije v napajalnih sistemih ter katerih merilne metode (razred A ali razred S) so določene v standardu IEC 61000-4-30.
Ta dokument se uporablja za instrumente za kakovost napajanja v skladu s standardom IEC 62586-1.
Na ta dokument se lahko sklicujejo tudi drugi standardi za proizvode (npr. za digitalne snemalnike okvar, merilnike dohodka, srednjenapetostne in visokonapetostne zaščitne releje), ki opredeljujejo naprave s funkcijami kakovosti napajanja razreda A ali razreda S v skladu s standardom IEC 61000-4-30.
Te zahteve se uporabljajo v enofaznih, dvofaznih (razdeljena faza) in trifaznih izmeničnih napajalnih sistemih pri 50 Hz ali 60 Hz.
Druga izdaja razveljavlja in nadomešča prvo izdajo, objavljeno leta 2013. Ta izdaja je tehnično popravljena izdaja. Ta izdaja vključuje naslednje znatne tehnične spremembe glede na prejšnjo izdajo:
– dodani so preskusni postopki za RVC in tok;
– napake so popravljene.

General Information

• Status: Published
• Publication Date: 24-Aug-2017
• Withdrawal Date: 24-Aug-2020
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• Technical Committee: CLC/TC 85X - Measuring equipment for electrical and electromagnetic quantities
• Drafting Committee: IEC/TC 85 - IEC_TC_85
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 25-Aug-2017
• Completion Date: 25-Aug-2017
• Directive: 2004/108/EC - Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive: 2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Ref Project: SIST EN 62586-2:2017 - Power quality measurement in power supply systems - Part 2: Functional tests and uncertainty requirements (IEC 62586-2:2017)

Relations

• Replaces: EN 62586-2:2014/AC:2014 - Power quality measurement in power supply systems - Part 2: Functional tests and uncertainty requirements
• Effective Date: 29-Aug-2017
• Replaces: EN 62586-2:2014 - Power quality measurement in power supply systems - Part 2: Functional tests and uncertainty requirements
• Effective Date: 29-Aug-2017
• Amended By: EN 62586-2:2017/A1:2021 - Power quality measurement in power supply systems - Part 2: Functional tests and uncertainty requirements
• Effective Date: 23-Jul-2019
• Corrected By: EN 62586-2:2017/AC:2018-09 - Power quality measurement in power supply systems - Part 2: Functional tests and uncertainty requirements
• Effective Date: 10-Jul-2018

Overview

EN 62586-2:2017 (IEC 62586-2:2017) specifies functional tests and measurement uncertainty requirements for power quality (PQ) instruments used in power supply systems. It applies to instruments whose measurement methods are defined as class A or class S in IEC 61000-4-30, and to devices embedding PQ functions (e.g., digital fault recorders, revenue meters, MV/HV protection relays). The standard covers single-, split- and 3‑phase AC systems at 50 Hz or 60 Hz. This second edition (2017) supersedes the 2013 edition and introduces new test procedures for rapid voltage changes (RVC) and current measurements, plus editorial corrections.

Key topics and technical requirements

• Scope & applicability
  • For PQ instruments complying with IEC 62586-1 and for product standards that embed class A or S PQ functions.
• Functional tests
  • Detailed procedures for verifying measurement functions: power frequency, magnitude of supply voltage, flicker, interruptions, dips, swells, unbalance, harmonics and interharmonics, mains signalling voltages, under/overdeviation parameters, flagging and clock accuracy.
  • New RVC test procedures and added current-related tests (magnitude, harmonic/interharmonic currents, current unbalance).
• Measurement uncertainty
  • Requirements for evaluating and reporting uncertainty, measurement ranges and test conditions aligned with international practice (GUM).
• Testing methodology
  • Test philosophy covering system topology, stabilization times, measuring ranges, single power‑system influence quantities, external influence quantities (temperature, supply variations), aggregation and evaluation rules.
• Polyphase checks
  • Procedures for dips/interruptions and swells in multi‑phase systems and aggregation rules for class A and class S evaluations.

Practical applications - who uses this standard

• Manufacturers of power quality analyzers, PQI modules, smart meters, relays and digital fault recorders: to design, validate and declare PQ performance.
• Testing and calibration laboratories: to perform type tests and report uncertainty for compliance with IEC 62586-1/IEC 61000-4-30.
• Utilities and system operators: for procurement specifications, acceptance testing and network power quality monitoring.
• Regulators and certification bodies: to set conformity requirements and interpret measurement results.
• OEMs and integrators embedding PQ functions into larger systems.

Related standards

• IEC 62586-1 / EN 62586-1 - Power Quality Instruments (PQI)
• IEC 61000-4-30 - Power quality measurement methods (class A & S)
• IEC 61000-4-7, IEC 61000-4-15 - Harmonics/interharmonics and flicker testing
• ISO/IEC Guide 98-3 (GUM) - Guide to expression of measurement uncertainty

This standard is essential for anyone specifying, testing, or certifying power quality measurement equipment and for ensuring consistent, uncertainty‑aware PQ data across single- and multi‑phase systems at 50/60 Hz.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2017
1DGRPHãþD
SIST EN 62586-2:2014
SIST EN 62586-2:2014/AC:2015
0HUMHQMHNDNRYRVWLHOHNWULþQHHQHUJLMHYQDSDMDOQLKVLVWHPLKGHO=DKWHYH]D
IXQNFLRQDOQHSUHVNXVHLQQHJRWRYRVW,(&
Power quality measurement in power supply systems - Part 2: Functional tests and
uncertainty requirements (IEC 62586-2:2017)
Messung der Spannungsqualität in Energieversorgungssystemen - Teil 2:
Funktionsprüfungen und Anforderungen an die Messunsicherheit (IEC 62586-2:2017)
Mesure de la qualité de l'alimentation dans les réseaux d'alimentation - Partie 2: Essais
fonctionnels et exigences d'incertitude (IEC 62586-2:2017)
Ta slovenski standard je istoveten z: EN 62586-2:2017
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62586-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2017
ICS 17.220.20 Supersedes EN 62586-2:2014
English Version
Power quality measurement in power supply systems -
Part 2: Functional tests and uncertainty requirements
(IEC 62586-2:2017)
Mesure de la qualité de l'alimentation dans les réseaux Messung der Spannungsqualität in
d'alimentation - Partie 2: Essais fonctionnels et exigences Energieversorgungssystemen - Teil 2: Funktionsprüfungen
d'incertitude und Anforderungen an die Messunsicherheit
(IEC 62586-2:2017) (IEC 62586-2:2017)
This European Standard was approved by CENELEC on 2017-04-11. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62586-2:2017 E
European foreword
The text of document 85/525/CDV, future edition 2 of IEC 62586-2, prepared by
IEC/TC 85 "Measuring equipment for electrical and electromagnetic quantities" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN 62586-2:2017.

The following dates are fixed:
(dop) 2018-02-25
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-08-25
standards conflicting with the
document have to be withdrawn
This document supersedes EN 62586-2:2014.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 62586-2:2017 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60359 NOTE Harmonized as EN 60359.
1)
IEC 61000-4-30:2008 NOTE Harmonized as EN 61000-4-30:2009 (not modified).

1)
Superseded by EN 61000-4-30:2015 (IEC 61000-4-30:2015): DOW = 2018-03-27.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year

IEC 61000-2-4 - Electromagnetic compatibility (EMC) - EN 61000-2-4 -
Part 2-4: Environment - Compatibility levels
in industrial plants for low-frequency
conducted disturbances
IEC 61000-4-7 - Electromagnetic compatibility (EMC) - EN 61000-4-7 -
Part 4-7: Testing and measurement
techniques - General guide on harmonics
and interharmonics measurements and
instrumentation, for power supply systems
and equipment connected thereto
IEC 61000-4-15 - Electromagnetic compatibility (EMC) - EN 61000-4-15 -
Part 4-15: Testing and measurement
techniques - Flickermeter - Functional and
design specifications
IEC 61000-4-30 2015 Electromagnetic Compatibility (EMC) - EN 61000-4-30 2015
Part 4-30: Testing and measurement
techniques - Power quality measurement
methods
IEC 62586-1 2013 Power quality measurement in power EN 62586-1 2014
supply systems -
Part 1: Power Quality Instruments (PQI)
ISO/IEC Guide 98-3 2008 Uncertainty of measurement - - -
Part 3: Guide to the expression of
uncertainty in measurement (GUM:1995)

IEC 62586-2 ®
Edition 2.0 2017-03
INTERNATIONAL
STANDARD
colour
inside
Power quality measurement in power supply systems –

Part 2: Functional tests and uncertainty requirements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 17.220.20 ISBN 978-2-8322-4052-6

– 2 – IEC 62586-2:2017 © IEC 2017
CONTENTS
FOREWORD . 9
INTRODUCTION . 11
1 Scope . 12
2 Normative references . 12
3 Terms, definitions, abbreviated terms, notations and symbols . 13
3.1 General terms and definitions . 13
3.2 Terms and definitions related to uncertainty . 13
3.3 Notations . 14
3.3.1 Functions . 14
3.3.2 Symbols and abbreviated terms . 14
3.3.3 Indices . 14
4 Requirements . 14
4.1 Requirements for products complying with class A . 14
4.2 Requirements for products complying with class S . 15
5 Functional type tests common requirements . 17
5.1 General philosophy for testing . 17
5.1.1 System topology . 17
5.1.2 Stabilization time . 17
5.1.3 Measuring ranges . 17
5.1.4 Single "power-system influence quantities" . 19
5.1.5 "External influence quantities" . 21
5.1.6 Test criteria . 21
5.2 Testing procedure . 22
5.2.1 Device under test. 22
5.2.2 Testing conditions . 22
5.2.3 Testing equipment . 22
6 Functional testing procedure for instruments complying with class A according to
IEC 61000-4-30 . 22
6.1 Power frequency . 22
6.1.1 General . 22
6.1.2 Measurement method . 23
6.1.3 Measurement uncertainty and measuring range . 23
6.1.4 Measurement evaluation . 24
6.1.5 Measurement aggregation . 24
6.2 Magnitude of supply voltage. 24
6.2.1 Measurement method . 24
6.2.2 Measurement uncertainty and measuring range . 24
6.2.3 Measurement evaluation . 25
6.2.4 Measurement aggregation . 25
6.3 Flicker . 27
6.4 Supply voltage interruptions, dips and swells . 27
6.4.1 General . 27
6.4.2 Check dips / interruptions in polyphase system . 35
6.4.3 Check swells in polyphase system . 37
6.5 Supply voltage unbalance . 38
6.5.1 General . 38

IEC 62586-2:2017 © IEC 2017 – 3 –
6.5.2 Measurement method, measurement uncertainty and measuring range . 39
6.5.3 Aggregation . 39
6.6 Voltage harmonics . 39
6.6.1 Measurement method . 39
6.6.2 Measurement uncertainty and measuring range . 40
6.6.3 Measurement evaluation . 41
6.6.4 Measurement aggregation . 41
6.7 Voltage interharmonics . 43
6.7.1 Measurement method . 43
6.7.2 Measurement uncertainty and measuring range . 44
6.7.3 Measurement evaluation . 45
6.7.4 Measurement aggregation . 45
6.8 Mains signalling voltages on the supply voltage . 47
6.8.1 Measurement method . 47
6.8.2 Measurement uncertainty and measuring range . 49
6.8.3 Aggregation . 50
6.9 Measurement of underdeviation and overdeviation parameters . 50
6.9.1 Measurement method . 50
6.9.2 Measurement uncertainty and measuring range . 52
6.9.3 Measurement evaluation . 53
6.9.4 Measurement aggregation . 53
6.10 Flagging . 56
6.11 Clock uncertainty testing . 58
6.12 Variations due to external influence quantities . 58
6.12.1 General . 58
6.12.2 Influence of temperature . 59
6.12.3 Influence of power supply voltage . 61
6.13 Rapid voltage changes (RVC) . 62
6.13.1 RVC parameters and evaluation . 62
6.13.2 General . 62
6.13.3 “No RVC” tests . 64
6.13.4 “RVC threshold and setup” test . 68
6.13.5 “RVC parameters” test . 70
6.13.6 “RVC polyphase” tests . 72
6.13.7 “Voltage is in steady-state condition” tests . 74
6.14 Magnitude of current . 77
6.15 Harmonic current . 77
6.16 Interharmonic currents . 77
6.17 Current unbalance . 77
6.17.1 General . 77
6.17.2 Measurement method, measurement uncertainty and measuring range . 78
7 Functional testing procedure for instruments complying with class S according to
IEC 61000-4-30 . 78
7.1 Power frequency . 78
7.1.1 General . 78
7.1.2 Measurement method . 79
7.1.3 Measurement uncertainty and measuring range . 79
7.1.4 Measurement evaluation . 80
7.1.5 Measurement aggregation . 80

– 4 – IEC 62586-2:2017 © IEC 2017
7.2 Magnitude of the supply voltage . 80
7.2.1 Measurement method . 80
7.2.2 Measurement uncertainty and measuring range . 80
7.2.3 Measurement evaluation . 81
7.2.4 Measurement aggregation . 81
7.3 Flicker . 83
7.4 Supply voltage interruptions, dips and swells . 83
7.4.1 General requirements . 84
7.4.2 Check dips / interruptions in polyphase system . 89
7.4.3 Check swells in polyphase system . 91
7.5 Supply voltage unbalance . 92
7.5.1 General . 92
7.5.2 Measurement method, measurement uncertainty and measuring range . 93
7.5.3 Aggregation . 93
7.6 Voltage harmonics . 93
7.6.1 General . 93
7.6.2 Measurement method . 94
7.6.3 Measurement method, measurement uncertainty and measuring range . 95
7.6.4 Measurement evaluation . 96
7.6.5 Measurement aggregation . 96
7.7 Voltage interharmonics . 98
7.8 Mains signalling voltages on the supply voltage . 98
7.8.1 General . 98
7.8.2 Measurement method . 99
7.8.3 Measurement uncertainty and measuring range . 99
7.8.4 Aggregation . 99
7.9 Measurement of underdeviation and overdeviation parameters . 99
7.10 Flagging . 99
7.11 Clock uncertainty testing . 101
7.12 Variations due to external influence quantities . 102
7.12.1 General . 102
7.12.2 Influence of temperature . 103
7.12.3 Influence of power supply voltage . 105
7.13 Rapid voltage changes . 106
7.14 Magnitude of current . 106
7.15 Harmonic current . 106
7.16 Interharmonic currents . 106
7.17 Current unbalance . 106
7.17.1 General . 106
7.17.2 Measurement method, measurement uncertainty and measuring range . 107
8 Calculation of measurement uncertainty and operating uncertainty . 108
Annex A (normative) Intrinsic uncertainty and operating uncertainty, . 110
A.1 General . 110
A.2 Measurement uncertainty . 110
A.3 Operating uncertainty . 111
Annex B (informative) Overall system uncertainty . 112
Annex C (normative) Calculation of measurement and operating uncertainty for
voltage magnitude and power frequency . 113

IEC 62586-2:2017 © IEC 2017 – 5 –
C.1 Selection of test points to verify operating uncertainty and uncertainty under
reference conditions . 113
C.2 Class A calculation examples . 113
C.2.1 General . 113
C.2.2 Parameter: magnitude of supply voltage, U = 230 V, 50/60Hz, rated
din
range of temperature −25 °C to +55 °C . 113
C.2.3 Parameter: power frequency 50/60 Hz, rated range of temperature
−25 °C to +55 °C . 114
Annex D (informative) Further test on dips (amplitude and phase angles changes) . 116
D.1 Phase-to-phase or phase-to-neutral testing . 116
D.2 Test method . 116
Annex E (informative) Further tests on dips (polyphase): test procedure . 118
E.1 General . 118
E.2 Phase voltage dips and interruptions . 119
E.3 Phase swells . 119
Annex F (normative) Gapless measurements of voltage amplitude and harmonics test . 121
F.1 Purpose of the test . 121
F.2 Test set up . 121
F.3 Voltage amplitude . 121
F.3.1 Test signal . 121
F.3.2 Result evaluation . 121
F.4 Harmonics . 122
F.4.1 Test signal . 122
F.4.2 Result evaluation . 122
F.5 Inter-harmonics . 123
F.5.1 Test signal . 123
F.5.2 Result evaluation . 123
Annex G (informative) Gapless measurements of voltage amplitude and harmonics. 124
Annex H (informative) Testing equipment recommendations . 133
H.1 Testing range . 133
H.2 Uncertainty and stability of source and reference meter . 133
H.2.1 Uncertainty of source and reference meter . 133
H.2.2 Stability of the source . 134
H.3 Time synchronisation . 134
H.4 Power quality functions of source and reference meter . 134
H.5 Traceability . 135
Annex I (informative) Recommendations related to a declaration of conformity (DoC)
and a test report . 136
I.1 Definitions. 136
I.2 Recommendations . 136
I.3 Example of IEC 62586-1 declaration of conformity . 136
I.4 Example of IEC 62586-2 declaration . 138
I.4.1 General . 138
I.4.2 Recommendation for IEC 62586-2 test report . 139
I.4.3 Recommendation for IEC 62586-2 test summary . 140
I.4.4 Recommendation for IEC 62586-2 test equipment information . 140
I.4.5 Recommendation for IEC 62586-2 tested functions . 140
Bibliography . 141

– 6 – IEC 62586-2:2017 © IEC 2017

Figure 1 – Overview of test for dips according to test A4.1.1 . 30
Figure 2 – Detail 1 of waveform for test of dips according to test A4.1.1 . 31
Figure 3 – Detail 2 of waveform for tests of dips according to A4.1.1 . 31
Figure 4 – Detail 3 of waveform for tests of dips according to test A4.1.1 . 32
Figure 5 – Detail 1 of waveform for test of dips according to test A4.1.2 . 32
Figure 6 – Detail 2 of waveform for tests of dips according to test A4.1.2 . 33
Figure 7 – Detail 1 of waveform for test of swells according to test A4.1.2 . 33
Figure 8 – Detail 2 of waveform for tests of swells according to test A4.1.2 . 34
Figure 9 – Sliding reference voltage test . 34
Figure 10 – Sliding reference start up condition . 35
Figure 11 – Detail 1 of waveform for test of polyphase dips/interruptions . 36
Figure 12 – Detail 2 of waveform for test of polyphase dips/interruptions . 36
Figure 13 – Detail 3 of waveform for test of polyphase dips/interruptions . 37
Figure 14 – Detail 1 of waveform for test of polyphase swells . 38
Figure 15 – Detail 2 of waveform for test of polyphase swells . 38
Figure 16 – Flagging test for class A . 57
Figure 17 – Clock uncertainty testing . 58
Figure 18 – Example of RVC event . 62
Figure 19 – A13.1.1 waveform . 65
Figure 20 – A13.1.1 waveform with RVC limits and arithmetic mean . 65
Figure 21 – A13.1.2 waveform . 66
Figure 22 – A13.1.2 waveform with RVC limits and arithmetic means . 67
Figure 23 – A13.1.3 waveform . 68
Figure 24 – A13.1.3 waveform with RVC limits and arithmetic mean . 68
Figure 25 – A13.2.1 waveform . 69
Figure 26 – A13.2.1 waveform with RVC limits and arithmetic mean . 70
Figure 27 – A13.3.1 waveform . 71
Figure 28 – A13.3.1 waveform with RVC limits and arithmetic mean . 72
Figure 29 – A13.4.1 waveform . 73
Figure 30 – A13.5.1 waveform . 75
Figure 31 –A13.5.1 waveform with RVC limits and arithmetic mean . 75
Figure 32 – A13.5.2 waveform . 76
Figure 33 – A13.5.2 waveform with RVC limits and arithmetic mean . 77
Figure 34 – Detail 1 of waveform for test of dips according to test S4.1.2 . 86
Figure 35 – Detail 2 of waveform for tests of dips according to test S4.1.2 . 87
Figure 36 – Detail 1 of waveform for test of swells according to test S4.1.2 . 87
Figure 37 – Detail 2 of waveform for tests of swells according to test S4.1.2 . 88
Figure 38 – Sliding reference voltage test . 88
Figure 39 – Sliding reference start-up condition . 89
Figure 40 – Detail 1 of waveform for test of polyphase dips/interruptions . 90
Figure 41 – Detail 2 of waveform for test of polyphase dips/interruptions . 90
Figure 42 – Detail 3 of waveform for test of polyphase dips/interruptions . 91

IEC 62586-2:2017 © IEC 2017 – 7 –
Figure 43 – Detail 1 of waveform for test of polyphase swells . 92
Figure 44 – Detail 2 of waveform for test of polyphase swells . 92
Figure 45 – Flagging test for class S . 101
Figure 46 – Clock uncertainty testing . 102
Figure A.1 – Different kinds of uncertainties . 110
Figure D.1 – Phase-to-neutral testing on three-phase systems . 116
Figure D.2 – Phase-to-phase testing on three-phase systems . 116
Figure E.1 – Example for one phase of a typical N cycle injection . 118
Figure E.2 – Dip/interruption accuracy (amplitude and timing) test . 119
Figure E.3 – Swell accuracy (amplitude and timing) test . 120
Figure G.1 – Simulated signal under noisy conditions . 124
Figure G.2 – Waveform for checking gapless RMS voltage measurement . 125
Figure G.3 – 2,3 Hz frequency fluctuation . 125
Figure G.4 – Spectral leakage effects for a missing sample . 126
Figure G.5 – Illustration of Q for missing samples . 127
RMS
Figure G.6 – Detection of a single missing sample . 127
−6
Figure G.7 – Q for an ideal signal, sampling error = −300 × 10 . 128
RMS
−6
Figure G.8 – Q for an ideal signal, sampling error = 400 × 10 . 128
RMS
−6
Figure G.9 – Q for an ideal signal, sampling error = 200 × 10 . 129
RMS
Figure G.10 – Q (5) with ideal test signal and perfect sampling frequency
H
synchronization . 130
−6 −6
Figure G.11 – Q (5) with 300 × 10 sampling frequency error and 100 × 10
H
modulation frequency error . 130
Figure G.12 – Q with a 20/24-cycle sliding window with an output every 10/12
RMS
cycles . 131
Figure G.13 – Amplitude test for fluctuating component . 131

Table 1 – Summary of type tests for class A . 15
Table 2 – Summary of type tests for class S . 16
Table 3 – Testing points for each measured parameter . 18
Table 4 – List of single "power-system influence quantities" . 20
Table 5 – Influence of temperature . 21
Table 6 – Influence of auxiliary power supply voltage . 21
Table 7 – List of generic test criteria . 22
Table 8 – Specification of test A13.1.1 . 64
Table 9 – Specification of test A13.1.2 . 66
Table 10 – Specification of test A13.1.3 . 67
Table 11 – Specification of test A13.2.1 . 69
Table 12 – Specification of test A13.3.1 . 71
Table 13 – Specification of test A13.4.1 . 73
Table 14 – Specification of test A13.5.1 . 74
Table 15 – Specification of test A13.5.2 . 76
Table 16 – Uncertainty requirements . 109
Table D.1 – Tests pattern . 117

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Table H.1 – Testing range . 133
Table H.2 – Uncertainty of source and reference meter. 134
Table H.3 – Stability of source . 134
Table I.1 – Example of a DoC related to compliance with IEC 62586-1 . 137
Table I.2 – Example of DoC related to compliance with IEC 62586-2 . 139

IEC 62586-2:2017 © IEC 2017 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER QUALITY MEASUREMENT IN POWER SUPPLY SYSTEMS –

Part 2: Functional tests and uncertainty requirements

FOREWORD
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International Standard IEC 62586-2 has been prepared by IEC technical committee 85:
Measuring equipment for electrical and electromagnetic quantities.
This second edition cancels and replaces the first edition published in 2013. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) test procedures for RVC and current have been added;
b) mistakes have been fixed.
– 10 – IEC 62586-2:2017 © IEC 2017
The text of this standard is based on the following documents:
CDV Report on voting
85/525/CDV 85/571/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 62586 series, published unde
...