IEC 61010-2-033:2023

Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-033: Particular requirements for hand-held multimeters and other meters for domestic and professional use, capable of measuring mains voltage

IEC 61010-2-033:2023 specifies safety requirements for hand-held multimeters and other meters for domestic and professional use, capable of measuring mains. Hand-held multimeters are multi-range multifunction measuring instruments intended to measure voltage and other electrical quantities such as resistance or current. Their primary purpose is to measure voltage on a live mains. They are suitable to be supported by one hand during normal use. This third edition cancels and replaces the second edition published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Clause 2, all normative references have been dated and new normative references have been added;
b) 4.4.2.101 is a new subclause about surge protective devices;
c) Subclause 6.6.101 modifies 6.6.101 and 6.6.102 of previous edition:
1) in 6.6.101.1, insulating material of group I may be allowed for determination of creepage distances of measuring circuit terminals;
2) in 6.6.101.2, Clearances and creepage distances up to 3 000 V for measuring circuit terminals in unmated position have been defined;
3) in 6.6.101.3, requirements for measuring circuit terminals in partially mated position have been specified;
4) in 6.6.101.4, requirements for measuring circuit terminals in mated position have been specified;
5) Subclause 6.6.101.5 replaces 6.6.102;
d) Subclause 6.101 replaces 6.9.101 of the previous edition with modifications;
e) 9.101 is a new subclause to consider the protection of measuring circuits against the spread of fire and arc flash;
f) in 9.101.2, relocation of 101.3 of previous edition;
g) in 9.101.3, relocation of 101.4 of previous edition;
h) in 101.3, relocation of Clause 102 of previous edition;
i) in K.2.1, another method for determination of clearances of secondary circuits is proposed;
j) in K.3.2, new Table K.15 and Table K.16 for clearance calculation;
k) Clause K.4 of the previous edition has been deleted;
l) Subclause K.101.4 has been reviewed;
m) Table K.104 of the previous edition has been deleted;
n) Annex AA: Figure AA.1 has been redesigned;
o) Annex EE: addition of a new informative annex for determination of clearances for the purposes of Table 101.

Exigences de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire - Partie 2-033: Exigences particulières pour les multimètres portatifs pour usage domestique et professionnel, capables de mesurer la tension réseau

L'IEC 61010-2-033:2023 spécifie les exigences de sécurité particulières pour les multimètres portatifs pour usage domestique et professionnel, capables de mesurer la tension réseau. Les multimètres portatifs sont des instruments de mesure multifonctions et avec plusieurs plages, destinés à mesurer la tension et d’autres grandeurs électriques telles que la résistance ou le courant. Ils ont pour objectif principal de mesurer la tension sur un réseau sous tension. Ils peuvent être tenus à la main en utilisation normale. Cette troisième édition annule et remplace la deuxième édition publiée en 2019. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) à l’Article 2, toutes les références normatives ont été datées et de nouvelles références normatives ont été ajoutées;
b) le paragraphe 4.4.2.101 est un nouveau paragraphe sur les dispositifs de protection contre les surtensions;
c) le paragraphe 6.6.101 modifie les paragraphes 6.6.101 et 6.6.102 de l’édition précédente:
1) au paragraphe 6.6.101.1, les matériaux isolants du groupe I peuvent être admis pour la détermination des distances d’isolement des bornes des circuits de mesure;
2) au paragraphe 6.6.101.2, les distances d’isolement et les lignes de fuite inférieures à 3 000 V pour les bornes des circuits de mesure en position découplée ont été définies;
3) au paragraphe 6.6.101.3, des exigences relatives aux bornes des circuits de mesure en position partiellement couplée ont été spécifiées;
4) au paragraphe 6.6.101.4, des exigences relatives aux bornes des circuits de mesure en position couplée ont été spécifiées;
5) le paragraphe 6.6.101.5 remplace le paragraphe 6.6.102;
d) le paragraphe 6.101 remplace le paragraphe 6.9.101 de l’édition précédente avec des modifications;
e) le paragraphe 9.101 est un nouveau paragraphe pour prendre en compte la protection des circuits de mesure contre la propagation du feu et les arcs électriques;
f) le paragraphe 101.3 de la précédente édition a été déplacé en 9.101.2;
g) le paragraphe 101.4 de la précédente édition a été déplacé en 9.101.3;
h) l’Article 102 de la précédente édition a été déplacé en 101.3;
i) au paragraphe K.2.1, une autre méthode de détermination des distances d’isolement des circuits secondaires a été proposée;
j) au paragraphe K.3.2, le Tableau K.15 et le Tableau K.16 ont été ajoutés pour le calcul de la distance d’isolement;
k) l’Article K.4 de l’édition précédente a été supprimé;
l) le paragraphe K.101.4 a été revu;
m) le Tableau K.104 de l’édition précédente a été supprimé;
n) en Annexe AA: la Figure AA.1 a été modifiée;
o) en Annexe EE: une nouvelle annexe informative a été ajoutée pour la détermination des distances d’isolement pour le Tableau 101.

General Information

• Status: Published
• Publication Date: 19-Sep-2023
• ICS: 19.080 - Electrical and electronic testing
• ICS: 71.040.10 - Chemical laboratories. Laboratory equipment
• Technical Committee: TC 66 - Safety of measuring, control and laboratory equipment
• Drafting Committee: WG 2 - TC 66/WG 2
• Current Stage: PPUB - Publication issued
• Start Date: 22-Sep-2023
• Completion Date: 20-Sep-2023

Relations

• Revises: IEC 61010-2-033:2019 - Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-033: Particular requirements for hand-held multimeters and other meters for domestic and professional use, capable of measuring mains voltage
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61010-2-033 ®
Edition 3.0 2023-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 61010-2-033:2023 includes the content of the references made to
IEC 61010-1:2010 and IEC 61010-1:2010/AMD1:2016

Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-033: Particular requirements for hand-held multimeters and other meters
for domestic and professional use, capable of measuring mains voltage
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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IEC 61010-2-033 ®
Edition 3.0 2023-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 61010-2-033:2023 includes the content of the references made to
IEC 61010-1:2010 and IEC 61010-1:2010/AMD1:2016
Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-033: Particular requirements for hand-held multimeters and other meters
for domestic and professional use, capable of measuring mains voltage
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.080, 71.040.10 ISBN 978-2-8322-7570-2

TC 66/Publication 61010-1 (2010), Third edition/I-SH 01
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –

Part 1: General requirements
INTERPRETATION SHEET 1
This interpretation sheet has been prepared by IEC technical committee 66: Safety of
measuring, control and laboratory equipment.
The text of this interpretation sheet is based on the following documents:
ISH Report on voting
66/497A/ISH 66/505/RVD
Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
___________
IEC 61010-1:2010 contains a requirement in 6.8.3.1 pertaining to voltage testers for type tests
as follows:
“The generator shall be able to supply a power of at least 500 VA.”
This has given rise to the following questions:
How does one interpret the requirement for voltage testers in 6.8.3.1 of IEC 61010-1:2010?
Specifically, this subclause requires that “The generator shall be able to supply a power of at
least 500 VA.” Does this requirement apply throughout the rated output range of the voltage
tester? What is meant by the word “generator”? Is the “generator” the power supply within the
voltage tester, or the voltage tester output, or something else?
Interpretation:
“A voltage tester used for type tests must be able to deliver at least 500 VA at its full-rated
output voltage. It does not necessarily need to deliver 500 VA if set for lower voltages.
For example, a voltage tester that can deliver 100 mA at any test output voltage up to 5 000 V
(and a current corresponding to 500 VA above 5 000 V) would meet the requirement.
The requirements for voltage testers used for routine (production line) tests are included in
Annex F. The requirements of 6.8.3.1 do not apply to these voltage testers.”

February 2013 ICS 19.080, 71.040.10 French text overleaf

– 2 – IEC 61010-2-033:2023 EXV © IEC 2023
CONTENTS
FOREWORD . 10
INTRODUCTION to IEC 61010-1:2010 and IEC 61010-1:2010/AMD1:2016 . 13
INTRODUCTION . 14
1 Scope and object . 15
1.1 Scope . 15
1.1.1 Equipment included in scope . 15
1.1.2 Equipment excluded from scope . 15
1.1.3 Computing equipment . 15
1.2 Object . 16
1.2.1 Aspects included in scope . 16
1.2.2 Aspects excluded from scope . 16
1.3 Verification . 16
1.4 Environmental conditions . 16
1.4.1 Normal environmental conditions . 16
1.4.2 Extended environmental conditions . 17
2 Normative references . 17
3 Terms and definitions . 19
3.1 Equipment and states of equipment . 19
3.2 Parts and accessories . 20
3.3 Quantities . 21
3.4 Tests . 21
3.5 Safety terms . 21
3.6 Insulation . 23
4 Tests . 24
4.1 General . 24
4.2 Sequence of tests. 25
4.3 Reference test conditions . 25
4.3.1 Environmental conditions . 25
4.3.2 State of equipment . 25
4.4 Testing in SINGLE FAULT CONDITION . 27
4.4.1 General . 27
4.4.2 Application of fault conditions . 27
4.4.3 Duration of tests . 30
4.4.4 Conformity after application of fault conditions . 30
5 Marking and documentation . 31
5.1 Marking . 31
5.1.1 General . 31
5.1.2 Identification . 31
5.1.3 MAINS supply . 31
5.1.4 Fuses . 33
5.1.5 TERMINALS, connections and operating devices . 34
5.1.6 Switches and circuit-breakers . 35
5.1.7 Equipment protected by DOUBLE INSULATION or REINFORCED
INSULATION . 35
5.1.8 Field-wiring TERMINAL boxes . 35
5.2 Warning markings . 36

5.3 Durability of markings . 36
5.4 Documentation . 36
5.4.1 General . 36
5.4.2 Equipment RATINGS . 37
5.4.3 Equipment installation . 38
5.4.4 Equipment operation . 38
5.4.5 Equipment maintenance and service . 39
5.4.6 Integration into systems or effects resulting from special conditions . 39
6 Protection against electric shock . 39
6.1 General . 39
6.1.1 Requirements . 39
6.1.2 Exceptions . 40
6.2 Determination of ACCESSIBLE parts . 40
6.2.1 General . 40
6.2.2 Examination. 40
6.2.3 Openings above parts that are HAZARDOUS LIVE. 41
6.2.4 Openings for pre-set controls. 41
6.3 Limit values for ACCESSIBLE parts . 41
6.3.1 Levels in NORMAL CONDITION . 41
6.3.2 Levels in SINGLE FAULT CONDITION . 42
6.4 Primary means of protection . 45
6.4.1 General . 45
6.4.2 ENCLOSURES and PROTECTIVE BARRIERS . 45
6.4.3 BASIC INSULATION . 45
6.4.4 Impedance . 45
6.5 Additional means of protection in case of SINGLE FAULT CONDITIONS . 45
6.5.1 General . 45
6.5.2 Not used . 49
6.5.3 SUPPLEMENTARY INSULATION and REINFORCED INSULATION . 49
6.5.4 PROTECTIVE IMPEDANCE . 49
6.5.5 Not used . 50
6.5.6 Current- or voltage-limiting device . 50
...

IEC 61010-2-033 ®
Edition 3.0 2023-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-033: Particular requirements for hand-held multimeters and other meters
for domestic and professional use, capable of measuring mains voltage

Exigences de sécurité pour appareils électriques de mesurage, de régulation et
de laboratoire –
Partie 2-033: Exigences particulières pour les multimètres portatifs pour usage
domestique et professionnel, capables de mesurer la tension réseau
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

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variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
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and withdrawn publications.
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The world's leading online dictionary on electrotechnology,
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containing more than 22 300 terminological entries in English
details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
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IEC 61010-2-033 ®
Edition 3.0 2023-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Safety requirements for electrical equipment for measurement, control, and

laboratory use –
Part 2-033: Particular requirements for hand-held multimeters and other meters

for domestic and professional use, capable of measuring mains voltage

Exigences de sécurité pour appareils électriques de mesurage, de régulation et

de laboratoire –
Partie 2-033: Exigences particulières pour les multimètres portatifs pour usage

domestique et professionnel, capables de mesurer la tension réseau

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.080, 71.040.10 ISBN 978-2-8322-7418-7

– 2 – IEC 61010-2-033:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope and object . 8
2 Normative references . 9
3 Terms and definitions . 10
4 Tests . 10
5 Marking and documentation . 11
6 Protection against electric shock . 13
7 Protection against mechanical HAZARDS . 18
8 Resistance to mechanical stresses . 18
9 Protection against the spread of fire and arc flash . 18
10 Equipment temperature limits and resistance to heat . 22
11 Protection against HAZARDS from fluids and solid foreign objects . 22
12 Protection against radiation, including laser sources, and against sonic and
ultrasonic pressure . 22
13 Protection against liberated gases and substances, explosion and implosion . 23
14 Components and subassemblies . 23
15 Protection by interlocks . 23
16 HAZARDS resulting from application . 23
17 RISK assessment . 23
101 Measuring circuits . 23
Annexes . 27
Annex K (normative) Insulation requirements not covered by 6.7 . 28
Annex L (informative) Index of defined terms . 36
Annex AA (normative) MEASUREMENT CATEGORIES . 37
Annex BB (informative) HAZARDS pertaining to measurements performed in certain
environments . 40
Annex CC (informative) 4 mm "banana" TERMINALS . 43
Annex DD (informative) Flowchart for insulation according to the type of circuit . 45
Annex EE (informative) Determination of CLEARANCES for Table 101 . 48
Bibliography . 49

Figure 4 – Acceptable arrangement of protective means against electric shock . 14
Figure AA.1 – Example to identify the locations of MEASUREMENT CATEGORIES . 38
Figure CC.1 – Recommended dimensions of 4 mm TERMINALS . 44
Figure DD.1 – Requirements for CLEARANCE, CREEPAGE DISTANCE and solid insulation . 47

Table 101 – CLEARANCES for unmated measuring circuit TERMINALS. 15
Table 102 – Impulse voltages for circuits connected to MAINS. 22
Table K.15 – CLEARANCE values for the calculation of K.3.2 . 29
Table K.16 – Test voltages based on CLEARANCES . 30
Table K.101 – CLEARANCES for measuring circuits RATED for MEASUREMENT CATEGORIES . 32

Table K.102 – Impulse test voltages for testing electric strength of solid insulation for
measuring circuits RATED for MEASUREMENT CATEGORIES . 33
Table K.103 – a.c. test voltages for testing electric strength of solid insulation for
RATED for MEASUREMENT CATEGORIES . 33
measuring circuits
Table K.104 – Minimum values for distance or thickness of solid insulation for
measuring circuits RATED for MEASUREMENT CATEGORIES . 34
Table AA.1 – Characteristics of MEASUREMENT CATEGORIES . 39
Table EE.1 – CLEARANCE values for Table 101 . 48

– 4 – IEC 61010-2-033:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –

Part 2-033: Particular requirements for hand-held multimeters
and other meters for domestic and professional use,
capable of measuring mains voltage

FOREWORD
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