FprEN 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.

Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2-033: Besondere Anforderungen an handgehaltene Multimeter und andere Messgeräte für den Haushalt und professionellen Gebrauch, geeignet zur Messung von Netzspannungen

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.

Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko uporabo - 2-033. del: Posebne zahteve za ročne multimetre in druge merilnike za domačo in profesionalno uporabo, ki omogočajo merjenje omrežne napetosti

General Information

• Status: Not Published
• Publication Date: 15-Oct-2023
• ICS: 19.080 - Electrical and electronic testing
• ICS: 71.040.10 - Chemical laboratories. Laboratory equipment
• Technical Committee: CLC/TC 66X - Safety of measuring, control, and laboratory equipment
• Drafting Committee: IEC/TC 66 - IEC_TC_66
• Current Stage: 5060 - Voting results sent to TC, SR - Formal Approval
• Start Date: 14-Jul-2023
• Completion Date: 14-Jul-2023
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: kSIST FprEN 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

Relations

• Revises: EN IEC 61010-2-033:2021 - Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-033: Particular requirements for hand-held multimeters for domestic and professional use, capable of measuring mains voltage
• Effective Date: 24-May-2022

Overview

FprEN IEC 61010-2-033:2023 - Particular requirements for hand-held multimeters and other meters capable of measuring mains voltage - specifies safety requirements for multi-range, hand-supported measurement instruments used in domestic and professional environments. This third edition replaces the 2019 edition and is a technical revision to IEC 61010-1 requirements for measurement, control and laboratory equipment. It is intended to be read in conjunction with IEC 61010-1:2010/AMD1:2016.

Key topics and technical requirements

• Scope and purpose: Safety rules for hand-held multimeters and related meters whose primary purpose is measuring live mains voltage and other electrical quantities (voltage, current, resistance).
• Updated normative references: Clause 2 includes dated and new normative references to harmonize tests and requirements.
• Protection against overvoltage and surges: New subclause (4.4.2.101) covers requirements for surge protective devices in measuring instruments.
• Clearances, creepage and insulation: Major revisions in Subclause 6.6.101 define:
  • Use of certain insulating materials for determining clearances,
  • Clearance and creepage distances up to 3 000 V for unmated measuring circuit terminals,
  • Requirements for terminals in partially mated and mated positions,
  • Replacement and reorganization of previous related clauses.
• Fire and arc flash protection: New subclause 9.101 addresses the protection of measuring circuits against the spread of fire and arc flash.
• Annex and calculation updates: Normative and informative annexes updated-new Annex EE (determination of clearances for Table 101), redesigned Figure AA.1, new Tables K.15 and K.16 for clearance calculations, and revisions in Annex K methods.
• Tests, markings and documentation: Requirements for tests, equipment marking and user documentation are aligned with Part 1 and extended where necessary.

Practical applications

• Ensures safe design and testing of hand-held multimeters used by electricians, field technicians, service engineers and hobbyists.
• Guides manufacturers on insulation, terminal spacing, surge protection, and fire/arc containment to achieve regulatory compliance and certification.
• Used by conformity assessment bodies and test laboratories for type and safety testing of meters intended to measure mains voltage.
• Useful for procurement and safety engineers specifying devices for workshops, industrial sites, and laboratory environments.

Who should use this standard

• Meter and test-equipment manufacturers
• Product safety and compliance engineers
• Test laboratories and certification bodies
• Electrical safety officers and procurement specialists

Related standards

• IEC 61010-1:2010 and IEC 61010-1:2010/AMD1:2016 (Part 1 - general requirements)
• IEC 61010-2-030 and IEC 61010-2-032 (related parts covering measuring circuits and current sensors)

Keywords: IEC 61010-2-033, hand-held multimeters, safety requirements, mains voltage, clearances, creepage distances, surge protective devices, arc flash, measurement categories.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 61010-2-033:2022
01-december-2022
Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko
uporabo - 2-033. del: Posebne zahteve za ročne multimetre in druge merilnike za
domačo in profesionalno uporabo, ki omogočajo merjenje omrežne napetosti
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
Ta slovenski standard je istoveten z: prEN IEC 61010-2-033:2022
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
oSIST prEN IEC 61010-2-033:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 61010-2-033:2022

oSIST prEN IEC 61010-2-033:2022
66/767/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61010-2-033 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-10-14 2023-01-06
SUPERSEDES DOCUMENTS:
66/761/RR
IEC TC 66 : SAFETY OF MEASURING, CONTROL AND LABORATORY EQUIPMENT
SECRETARIAT: SECRETARY:
United Kingdom Ms Stephanie Lavy
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.

TITLE:
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

PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for
any other purpose without permission in writing from IEC.

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1 CONTENTS
2 CONTENTS . 2
3 FOREWORD. 4
4 INTRODUCTION . 7
5 1 Scope and object . 8
6 2 Normative references . 9
7 3 Terms and definitions . 10
8 4 Tests . 10
9 5 Marking and documentation . 11
10 6 Protection against electric shock . 13
11 7 Protection against mechanical HAZARDS . 18
12 8 Resistance to mechanical stresses . 18
13 9 Protection against the spread of fire and arc flash . 18
14 10 Equipment temperature limits and resistance to heat . 22
15 11 Protection against HAZARDS from fluids and solid foreign objects . 22
16 12 Protection against radiation, including laser sources, and against sonic and
17 ultrasonic pressure . 22
18 13 Protection against liberated gases and substances, explosion and implosion . 22
19 14 Components and subassemblies . 22
20 15 Protection by interlocks . 23
21 16 HAZARDS resulting from application . 23
22 17 RISK assessment . 23
23 101 Measuring circuits . 23
24 Annexes . 26
25 Annex K (normative) Insulation requirements not covered by 6.7 . 26
26 Annex L (informative) Index of defined terms . 34
27 Annex AA (normative) MEASUREMENT CATEGORIES . 35
28 Annex BB (informative) HAZARDS pertaining to measurements performed in certain
29 environments . 38
30 Annex CC (informative) 4 mm "banana" TERMINALS . 41
31 Annex DD (informative) Flowchart for insulation according to the type of circuit . 43
32 Annex EE (informative) Determination of CLEARANCES for Table 101 . 46
33 Bibliography . 47
35 Figure 4 – Acceptable arrangement of protective means against electric shock . 14
36 Figure AA.1 – Example to identify the locations of MEASUREMENT CATEGORIES . 36
37 Figure CC.1 – Recommended dimensions of 4 mm TERMINALS . 42
38 Figure DD.1 – Requirements for CLEARANCE, CREEPAGE DISTANCE and solid insulation . 45
40 Table 101 – CLEARANCES for unmated measuring circuit TERMINALS . 15
41 Table 102 – Impulse voltages for circuits connected to MAINS . 22
42 Table K.15 – CLEARANCE values for the calculation of K.3.2 . 27
43 Table K.16 – Test voltages based on CLEARANCES . 28
44 Table K.101 - CLEARANCES for measuring circuits RATED for MEASUREMENT CATEGORIES . 30

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45 Table K.102 – Impulse test voltages for testing electric strength of solid insulation for
46 measuring circuits RATED for MEASUREMENT CATEGORIES . 31
47 Table K.103 – a.c. test voltages for testing electric strength of solid insulation for
48 measuring circuits RATED for MEASUREMENT CATEGORIES . 31
49 Table K.104 – Minimum values for distance or thickness of solid insulation for
50 measuring circuits RATED for MEASUREMENT CATEGORIES . 32
51 Table AA.1 – Characteristics of MEASUREMENT CATEGORIES . 37
52 Table EE.1 – CLEARANCES values for Table 101 . 46
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54 INTERNATIONAL ELECTROTECHNICAL COMMISSION
55 ____________
57 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
58 FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
60 Part 2-033: Particular requirements for hand-held multimeters
61 for domestic and professional use, capable of measuring mains voltage
63 FOREWORD
64 1) The International Electrotechnical Commission (IEC) is a worldwide organization for st andardization comprising
65 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
66 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
67 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
68 Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
69 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
70 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
71 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
72 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
73 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
74 consensus of opinion on the relevant subjects since each technical committee has representation from all
75 interested IEC National Committees.
76 3) IEC Publications have the form of recommendations for international use and are accepted by I EC National
77 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
78 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
79 misinterpretation by any end user.
80 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
81 transparently to the maximum extent possible in their national and regional publications. Any divergence between
82 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
83 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
84 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
85 services carried out by independent certification bodies.
86 6) All users should ensure that they have the latest edition of this publication.
87 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
88 members of its technical committees and IEC National Committees for any personal injury, property damage or
89 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal f ees) and
90 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
91 Publications.
92 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
93 indispensable for the correct application of this publication.
94 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
95 rights. IEC shall not be held responsible for identifying any or all such patent rights.
96 IEC 61010-2-033 has been prepared by IEC technical committee 66: Safety of measuring,
97 control and laboratory equipment.
98 It has the status of a group safety publication in accordance with IEC Guide 104.
99 This third edition cancels and replaces the second edition published in 2019. This edition
100 constitutes a technical revision.

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101 This edition includes the following significant technical changes with respect to the previous
102 edition:
Clause 2 All normative references have been dated and new normative references have been added.
4.4.2.101 Addition of a new subclause about surge protective devices.
6.6.101.1 Insulating material of group I may be allowed for determination of CLEARANCES of measuring
circuit TERMINALS.
6.6.101.2 CLEARANCES and CREEPAGE DISTANCES up to 3 000 V for measuring circuit TERMINALS in
unmated position have been defined.
6.6.101.3 Requirements for measuring circuit TERMINALS in partially mated position have been specified.
6.6.101.4 Requirements for measuring circuit TERMINALS in mated position have been specified.
6.101 The subclause replaces 6.9.101 of previous edition and has been rephrased.
9.101 New subclause to consider the protection of measuring circuits against the spread of fire and
arc flash.
9.101.2 Relocation of 101.3 of previous edition.
9.101.3 Relocation of 101.4 of previous edition.
101.3 Relocation of 102 of previous edition.
K.2.1 Another method for determination of CLEARANCES of secondary circuits is proposed.
K.3.2 New Table K.15 and Table K.16 for CLEARANCE calculation.
Clause K.4 This clause of previous edition has been deleted.
K.101.4 The subclause has been reviewed.
Table K.104 of previous edition has been deleted.
Annex AA Figure AA.1 has been redesigned.
Annex EE Addition of a new informative annex for determination of CLEARANCES for Table 101.
104 The text of this International Standard is based on the following documents:
FDIS Report on voting
66/xxx/FDIS 66/xxx/RVD
106 Full information on the voting for the approval of this International Standard can be found in the
107 report on voting indicated in the above table.
108 The language used for the development of this International Standard is English.
109 This document was drafted in accordance with the ISO/IEC Directives, Part 2 and developed in
110 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
111 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
112 described in greater detail at www.iec.ch/publications.
113 A list of all parts of the IEC 61010 series, under the general title Safety requirements for
114 electrical equipment for measurement, control, and laboratory use, can be found on the IEC
115 website.
116 This Part 2-033 is to be used in conjunction with IEC 61010-1:2010 and
117 IEC 61010-1:2010/AMD1:2016. It was established on the basis of the third edition (2010) of
118 IEC 61010-1, including its amendment 1 (2016) and its corrigendum 1 (2019), hereinafter
119 referred to as Part 1.
120 This Part 2-033 supplements or modifies the corresponding clauses in IEC 61010-1 so as to
121 convert that publication into the IEC standard: Particular requirements for hand-held
122 multimeters for domestic and professional use, capable of measuring mains voltage

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123 Where a particular subclause of Part 1 is not mentioned in this Part 2-033, that subclause
124 applies as far as is reasonable. Where this part states “addition”, “modification”, “replacement”,
125 or “deletion” the relevant requirement, test specification or note in Part 1 should be adapted
126 accordingly.
127 In this standard:
128 a) the following print types are used:
129 – requirements: in roman type;
130 – NOTES: in small roman type;
131 – conformity and tests: in italic type;
132 – terms used throughout this standard which have been defined in Clause 3: SMALL ROMAN
133 CAPITALS;
134 b) subclauses, figures, tables and notes which are additional to those in Part 1 are numbered
135 starting from 101. Additional annexes are lettered starting from AA and additional list items
136 are lettered from aa).
137 The committee has decided that the contents of this document will remain unchanged until the
138 stability date indicated on the IEC website under http://webstore.iec.ch in the data related to
139 the specific document. At this date, the document will be
140 • reconfirmed,
141 • withdrawn,
142 • replaced by a revised edition, or
143 • amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
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145 INTRODUCTION
146 IEC 61010-1 specifies the safety requirements that are generally applicable to all equipment
147 within its scope. For certain types of equipment, the requirements of IEC 61010-1 and its
148 amendment will be supplemented or modified by the special requirements of one, or more than
149 one, particular Part 2 which are read in conjunction with the Part 1 requirements.
150 1) Part 2-030 specifies the safety requirements for equipment with testing or measuring
151 circuits which are connected for test or measurement purposes to devices or circuits outside
152 the measurement equipment itself.
153 2) Part 2-032 specifies the safety requirements for hand-held and hand-manipulated current
154 sensors for measuring, detecting, injecting current, or indicating current waveforms on
155 circuits without physically opening the current path of the circuit being measured.
156 Most of the requirements of Part 2-030 have been included into Part 2-032. Equipment
157 within the scopes of both Part 2-030 and Part 2-032 are considered to be covered by the
158 requirements of Part 2-032.
159 However, for current sensor in combined equipment with protective bonding and automatic
160 disconnection of the supply, Part 2-030 and Part 2-032 are read in conjunction
161 3) Part 2-033 specifies the safety requirements for hand-held multimeters and other meters for
162 domestic and professional use, capable of measuring mains voltage, intended to measure
163 voltage and other electrical quantities such as resistance or current.
164 All relevant requirements of Part 2-030 have been included into Part 2-033.
165 4) Part 2-034 specifies the safety requirements for measurement equipment for insulation
166 resistance and test equipment for electric strength which are connected to units, lines or
167 circuits for test or measurement purposes.
168 All relevant requirements of Part 2-030 have been included into Part 2-034. However, for
169 equipment within the scope of Part 2-032 and Part 2-034, these standards are read in
170 conjunction.
171 IEC 61010-031 specifies the safety requirements for hand-held and hand-manipulated probe
172 assemblies and their related accessories intended to be used in particular with equipment in
173 the scope of Part 2-030, Part 2-032, Part 2-033 and Part 2-034. These probe assemblies are
174 for non-contact or direct electrical connection between a part and electrical test and
175 measurement equipment. They may be fixed to the equipment or be detachable accessories for
176 the equipment.
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178 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
179 FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
182 Part 2-033: Particular requirements for hand-held multimeters
183 for domestic and professional use, capable of measuring mains voltage
187 1 Scope and object
188 IEC 61010-1:2010, Clause 1 and IEC 61010-1:2010/AMD1:2016, Clause 1 apply except as
189 follows:
190 1.1.1 Equipment included in scope
191 Replace the existing text with the following:
192 This group safety publication is primarily intended to be used as a product safety standard for
193 the products mentioned in the scope, but shall also be used by technical committees in the
194 preparation of their publications for products similar to those mentioned in the scope of this
195 document, in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51.
196 This part of IEC 61010 specifies safety requirements for HAND-HELD multimeters for domestic
197 and professional use, capable of measuring MAINS.
198 HAND-HELD multimeters are multi-range multifunction measuring instruments intended to
199 measure voltage and other electrical quantities such as resistance or current. Their primary
200 purpose is to measure voltage on a live MAINS. They are suitable to be supported by one hand
201 during NORMAL USE.
202 1.1.2 Equipment excluded from scope
203 Add the following new item to the list and the following paragraph:
204 aa) IEC 61557 (all parts), Electrical safety in low voltage distribution systems up to 1 000 V a.c.
205 and 1 500 V d.c. – Equipment for testing, measuring or monitoring of protective measures
206 HAND-HELD EQUIPMENT such as oscilloscopes, wattmeters, process control multimeters not
207 RATED for measuring voltage on a live MAINS, clamp multimeters and communications test sets
208 are not within the scope of this document.
209 1.2.1 Aspects included in scope
210 Replace item c) of the second paragraph with the following new item:
211 c) spread of fire or arc flash from the HAND-HELD multimeters (see Clause 9);
212 Replace the third paragraph with the following two new paragraphs:
213 Requirements for protection against HAZARDS arising from NORMAL USE, REASONABLY
214 FORESEEABLE MISUSE and ergonomic factors are specified in Clause 16 and Clause 101.
215 Annex BB provides guidance to equipment manufacturer on HAZARDS that should be considered
216 for equipment intended for performing tests and measurements on hazardous conductors,
217 including MAINS conductors and telecommunication network conductors.

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218 2 Normative references
219 IEC 61010-1:2010, Clause 2 and IEC 61010-1:2010/AMD1:2016, Clause 2 apply except as
220 follows:
221 Replace the following existing normative references:
222 IEC 60364-4-44:2007, Low-voltage electrical installations – Part 4-44: Protection for safety –
223 Protection against voltage disturbances and electromagnetic disturbances
224 IEC 60364-4-44:2007/AMD1:2015
225 IEC 61010-031, Safety requirements for electrical equipment for measurement, control and
226 laboratory use – Part 031: Safety requirements for hand-held probe assemblies for electrical
227 measurement and test
228 IEC 61180 (all parts), High-voltage test techniques for low-voltage equipment
229 IEC 61180-1, High-voltage test techniques for low-voltage equipment – Part 1: Definitions, test
230 and procedure requirements
231 IEC 61180-2, High-voltage test techniques for low-voltage equipment – Part 2: Test equipment
232 with the following new normative references:
233 IEC 60364-4-44:2007, Low-voltage electrical installations – Part 4-44: Protection for safety –
234 Protection against voltage disturbances and electromagnetic disturbances
235 IEC 60364-4-44:2007/AMD1:2015
236 IEC 60364-4-44:2007/AMD2:2018
237 IEC 61010-031:— , Safety requirements for electrical equipment for measurement, control and
238 laboratory use – Part 031: Safety requirements for hand-held and hand-manipulated probe
239 assemblies for electrical test and measurement
240 IEC 61180:2016, High-voltage test techniques for low-voltage equipment – Definitions, test and
241 procedure requirements, test equipment
242 NOTE IEC 61180:2016 replaces everywhere IEC 61180, IEC 61180-1 and IEC 61180-2 are referenced in Part 1.
243 Add the following new normative references:
244 IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) - Part 4-5: Testing and
245 measurement techniques - Surge immunity test
246 IEC 61000-4-5:2014/AMD1:2017
247 IEC 61010-2-030:— , Safety requirements for electrical equipment for measurement, control,
248 and laboratory use – Part 2-030: Special requirements for testing and measuring circuits
249 IEC 61010-2-032:— , Safety requirements for electrical equipment for measurement, control,
250 and laboratory use – Part 2-032: Particular requirements for hand-held and hand-manipulated
251 current sensors for electrical test and measurement
———————
Third edition under preparation. Stage at the time of publication: IEC FDIS 61010-031:2022.
Third edition under preparation. Stage at the time of publication: IEC CDV 61010-2-030:2022.
Fifth edition under preparation. Stage at the time of publication: IEC CDV 61010-2-032:2022.

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252 3 Terms and definitions
253 IEC 61010-1:2010, Clause 3 and IEC 61010-1:2010/AMD1:2016, Clause 3 apply except as
254 follows:
255 3.5 Safety terms
256 Replace the definition of 3.5.4 with the following new definition:
257 3.5.4
258 MAINS
259 electricity supply system
260 Add the following new term and definition:
261 3.5.101
262 MEASUREMENT CATEGORY
263 classification of testing and measuring circuits according to the type of MAINS to which they are
264 intended to be connected
265 Note 1 to entry: MEASUREMENT CATEGORIES take into account OVERVOLTAGE CATEGORIES, short-circuit current levels,
266 the location where the test or measurement is to be made and some forms of energy limitation or transient protection
267 included in the building installation (see Annex AA for more information).
268 4 Tests
269 IEC 61010-1:2010, Clause 4 and IEC 61010-1:2010/AMD1:2016, Clause 4 apply except as
270 follows:
271 4.3.2.5 MAINS supply
272 Replace the existing title and text of 4.3.2.5 with the following title and text:
273 4.3.2.5 Power supply
274 The following requirements apply:
275 a) the MAINS supply voltage shall be between 90 % and 110 % of any RATED supply voltage for
276 which the HAND-HELD multimeter can be set or, if the HAND-HELD multimeter is RATED for a
277 greater fluctuation, at any supply voltage within the fluctuation range;
278 b) the MAINS frequency shall be any RATED frequency;
279 c) HAND-HELD multimeter for both a.c. and d.c. shall be connected to an a.c. or d.c. supply;
280 d) HAND-HELD multimeter powered by single-phase a.c. MAINS supply shall be connected both
281 with normal and reverse polarity;
282 e) if the means of connection permit reversal, battery-operated and d.c. HAND-HELD multimeter
283 shall be connected with both reverse and normal polarity.
284 4.3.2.6 Input and output voltages
285 Replace the existing title and text of 4.3.2.6 with the following title and text:
286 4.3.2.6 Input and output voltages or currents
287 Input and output voltages or currents, including floating voltages but excluding the MAINS supply
288 voltage, shall be set to any voltage or current within their RATED range, in normal and reverse
289 polarity if possible.
290 Add the following new subclause:

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291 4.4.2.101 Surge protective devices
292 Surge protective devices used in MAINS CIRCUITS or the circuits measuring MAINS shall be short-
293 circuited and open-circuited.
294 5 Marking and documentation
295 IEC 61010-1:2010, Clause 5 and IEC 61010-1:2010/AMD1:2016, Clause 5 apply except as
296 follows:
297 5.1.2 Identification
298 Add the following note after the existing note:
299 NOTE 101 Some national regulations might require a marking to indicate the name and edition of the standard used
300 for compliance evaluation.
301 5.1.5 TERMINALS, connections and operating devices
302 5.1.5.1 General
303 Replace the first paragraph with the following:
304 If necessary for safety, an indication shall be given of the purpose of TERMINALS, connectors,
305 controls, and indicators. Where there is insufficient space, symbol 14 from Table 1 may be
306 used.
307 5.1.5.2 TERMINALS
308 Replace the existing item d) with the following item d):
309 d) TERMINALS supplied from the interior of the HAND-HELD multimeter and which could be
310 HAZARDOUS LIVE, with the voltage, current, charge or energy value or range, or with
311 symbol 12 of Table 1;
312 Add the following new item to the list:
313 aa) TERMINALS supplied from other TERMINALS which could be HAZARDOUS LIVE, with symbol 12
314 or symbol 14 of Table 1.
315 Add the following new subclause:
316 5.1.5.101 Measuring circuit TERMINALS
317 Measuring circuit TERMINALS are usually arranged in pairs or sets. Each pair or set of TERMINALS
318 may have a RATED voltage or a RATED current, or both, within that set, and each individual
319 TERMINAL will have a RATED voltage to earth. For some HAND-HELD multimeters, the RATED
320 voltage between TERMINALS may be different from the RATED voltage to earth. Markings shall be
321 clear to avoid misunderstanding.
322 Each pair or set of measuring circuit TERMINALS that are intended to be used together shall be
323 marked with the value of the RATED voltage or the RATED current as applicable to the pair or set
324 of TERMINALS.
325 TERMINALS of measuring circuits RATED for MAINS voltage measurements shall be marked with
326 "CAT lll" or "CAT IV" and its RATED a.c. r.m.s. line-to-neutral or d.c. voltage as applicable.
327 Marking those TERMINALS with these two types of MEASUREMENT CATEGORY is permissible.
328 Marking of MEASUREMENT CATEGORY II is not allowed. Other measuring circuit TERMINALS shall
329 be marked with the value of the RATED voltage to earth.

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330 NOTE CLEARANCES and solid insulation for MEASUREMENT CATEGORIES are specified for a nominal a.c. r.m.s. line-
331 to-neutral or d.c. voltage of MAINS being measured (see Table K.101 and Annex I). Neutral is considered to be
332 earthed.
333 Measuring circuit TERMINALS that do not have a RATING for connection to voltages above the
334 levels of 6.3.1, may be marked with alternative markings.
335 Measuring circuit TERMINALS which are dedicated only for connection to specific TERMINALS of
336 other equipment need not be marked provided that there is a means of identifying these
337 TERMINALS.
338 TERMINAL markings shall be visible when the HAND-HELD multimeter is ready for NORMAL USE
339 with connectors and TERMINALS mated and shall reference the applicable TERMINALS.
340 Conformity is checked by inspection.
341 5.2 Warning markings
342 Replace the existing text with the following text:
343 Warning markings specified in in this document shall meet the following requirements.
344 Warning markings shall be visible when the HAND-HELD multimeter is ready for NORMAL USE. If a
345 warning applies to a particular part of the HAND-HELD multimeter, the marking shall be placed
346 on or near that part.
347 The size of warning markings shall be as follows.
348 a) Symbols shall be at least 2,75 mm high. Text shall be at least 1,5 mm high and contrast in
349 colour with the background.
350 b) Symbols or text moulded, stamped or engraved in a material shall be at least 2,0 mm high.
351 If not contrasting in colour, they shall have a depth or raised height of at least 0,5 mm.
352 If it is necessary for the RESPONSIBLE BODY or OPERATOR to refer to the instruction manual to
353 preserve the protection afforded by the HAND-HELD multimeter, the HAND-HELD multimeter shall
354 be marked with symbol 14 of Table 1. Symbol 14 is not required to be used together with
355 symbols which are explained in the manual.
356 If the instructions for use state that an OPERATOR is permitted to gain access, using a TOOL, to
357 a part which in NORMAL USE may be HAZARDOUS LIVE, there shall be a warning marking which
358 states that the HAND-HELD multimeter shall be isolated or disconnected from the HAZARDOUS LIVE
359 voltage before access.
360 NOTE National regulations can require safety markings in a nationally accepted language.
361 Conformity is checked by inspection.
362 5.4.1 General
363 Replace the first paragraph with the following paragraph:
364 The following documentation necessary for safety purposes, as needed by the OPERATOR or the
365 RESPONSIBLE BODY, shall be provided with the HAND-HELD multimeter, in an accepted language
366 of the country where the product is intended to be placed on the market. Safety documentation
367 for service personnel authorized by the manufacturer shall be made available to those
368 personnel, in a language selected by the manufacturer.
369 Add the following two new items to the list and a new paragraph at the end of the list:

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370 aa) the documentation shall indicate that probe assemblies to be used for MAINS
371 measurements shall be RATED as appropriate for MEASUREMENT CATEGORY III or IV
372 according to IEC 61010-031:— and shall have a voltage RATING of at least the voltage of
373 the circuit to be measured;
374 bb) information about each relevant MEASUREMENT CATEGORY (see 5.1.5.101).
375 If the HAND-HELD multimeter has multiple MEASUREMENT CATEGORY RATINGS for the same
376 measuring circuit, the documentation shall clearly identify the MEASUREMENT CATEGORIES where
377 the HAND-HELD multimeter may be used and where it shall not be used.
378 6 Protection against electric shock
379 IEC 61010-1:2010, Clause 6 and IEC 61010-1:2010/AMD1:2016, Clause 6 apply except as
380 follows:
381 6.5.1 General
382 Replace the text, the conformity statement, and Figure 4 with the following text, conformity
383 statement and Figure 4:
384 ACCESSIBLE parts shall be prevented from becoming HAZARDOUS LIVE in SINGLE FAULT CONDITION.
385 The primary means of protection (see 6.4) shall be supplemented by one of a) or b).
386 Alternatively, one of the single means of protection c) or d) shall be used (see Figure 4 and
387 Annex DD).
388 a) SUPPLEMENTARY INSULATION (see 6.5.3);
389 b) current or voltage limiting device (see 6.5.6);
390 c) REINFORCED INSULATION (see 6.5.3);
391 d) PROTECTIVE IMPEDANCE (see 6.5.4).
392 Conformity is checked by inspection and as specified in 6.5.3, 6.5.4, or 6.5.6, as applicable.

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394 Figure 4 – Acceptable arrangement of protective means against electric shock
395 6.5.2 PROTECTIVE BONDING
396 Replace the existing title of 6.5.2 with the following title and delete the text:
397 6.5.2 Not used
398 6.5.5 Automatic disconnection of the supply
399 Replace the existing title of 6.5.5 with the following title and delete the text:
400 6.5.5 Not used
401 6.6 Connections to external circuits
402 Add the following new subclause and table:
403 6.6.101 Measuring circuit TERMINALS
404 6.6.101.1 General
405 When determining the values of CREEPAGE DISTANCES for measuring circuit TERMINALS of HAND-
406 HELD multimeter intended to be connected only to a HAND-HELD probe assembly complying with
407 IEC 61010-031:—, or to a current sensor complying with IEC 61010-2-032:—, the applicable
408 values of CREEPAGE DISTANCES from material group I are allowed to be applied to all material
409 groups.
410 Requirements for measuring circuit TERMINALS in unmated position, partially mated or mated
411 position are defined respectively in 6.6.101.2, 6.6.101.3 and 6.6.101.4. Requirements for
412 specialized measuring circuit TERMINALS are defined in 6.6.101.5.
413 Annex CC provides information regarding the recommended dimensions of 4 mm "banana"
414 TERMINALS.
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415 6.6.101.2 Measuring circuit TERMINALS in unmated position
416 The following requirements apply to measuring circuits TERMINALS in unmated position when
417 RATED voltages are applied to any other TERMINALS of the HAND-HELD multimeter.
418 ACCESSIBLE parts of unmated measuring circuit TERMINALS shall be insulated from HAZARDOUS
419 LIVE parts by PROTECTIVE IMPEDANCE or CLEARANCES and CREEPAGE DISTANCES meeting the
420 requirements of a) and b).
421 a) For measuring circuit TERMINALS with a voltage RATING up to 3 000 V, the CLEARANCES
422 shall be at least the applicable values of Table 101.
423 Table 101 – CLEARANCES for unmated measuring circuit TERMINALS
CLEARANCE
Maximum voltage
applied to the
conductive parts of the
a.c. r.m.s. d.c.
TERMINAL
V mm mm
600 0,8 0,8
1 000 1,0 0,8
1 500 2,0 1,1
2 000 3,2 1,8
3 000 6,4 3,5
For maximum voltages above 30 V a.c. r.m.s. or 60 V d.c. up to 600 V, CLEARANCES
are 0,8 mm.
Linear interpolation is allowed above 600 V.
NOTE See Annex EE.
425 If the HAND-HELD multimeter is RATED to operate at an altitude greater than 2 000 m, the
426 value of the CLEARANCE shall be multiplied by the applicable factor of Table 3.
427 Conformity is checked by one of the following tests:
428 i) inspection and measurement of CLEARANCE from the closest approach of the test
429 finger touching the external parts of the TERMINAL in the least favourable position
430 (see Figure 1), or
431 ii) the a.c. voltage test of 6.8.3.1 or the d.c. voltage test of 6.8.3.2 for TERMINAL stressed
432 only by d.c. with a duration of at least 5 s, or the impulse voltage test of 6.8.3.3, using
433 the applicable test voltage of Table K.16 for the required CLEARANCE.
434 Correction factors of Table 10 are applicable to the values of test voltages for
435 CLEARANCES given in Table K.16.
436 b) The CREEPAGE DISTANCE values shall be at least the applicable CLEARANCE values
437 defined in a).
438 Conformity is checked by inspection and measurement of CREEPAGE DISTANCES from the
439 closest approach of the test finger touching the external parts of TERMINAL in the least
440 favourable position.
441 In addition for HAND-HELD multimeter RATED for WET LOCATIONS, conductive parts of
442 TERMINALS with voltage RATINGS above16 V a.c. r.m.s., 22,6 V a.c. peak and 35 V d.c. shall
443 not be ACCESSIBLE.
444 Conformity is checked by inspection and measurement.
445 6.6.101.3 Measuring circuit TERMINALS in partially mated position
446 ACCESSIBLE parts of measuring circuit TERMINALS in partially mated position shall be insulated
447 from HAZARDOUS LIVE parts by BASIC INSULATION.
448 Conformity is checked by inspection and measurement.

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449 6.6.101.4 Measuring circuit TERMINALS in mated position
450 ACCESSIBLE parts of measuring circuit TERMINALS in mated position which are not intended to
451 be HAND-HELD or touched during the measurement operation shall be insulated from HAZARDOUS
452 LIVE parts by BASIC INSULATION.
453 ACCESSIBLE parts of other measuring circuits TERMINALS in mated position shall be insulated
454 from HAZARDOUS LIVE parts by DOUBLE INSULATION or REINFORCED INSULATION.
455 Conformity is checked by inspection and measurement.
456 6.6.101.5 Specialized measuring circuit TERMINALS
457 Specialized measuring circuit TERMINALS are TERMINALS intended to be connected to
458 components, sensors, and devices.
459 NOTE These specialized TERMINALS include, but are not limited to, TERMINALS for thermocouple sockets.
460 Components, sensors, and devices intended to be connected to specialized measuring circuit
461 TERMINALS shall not be both ACCESSIBLE and HAZARDOUS LIVE, in either NORMAL CONDITION or in
462 SINGLE FAULT CONDITION, even when the highest RATED voltage is applied to any other measuring
463 circuit TERMINAL.
464 Conformity is checked by inspection and measurement. Components, sensors, and devices
465 intended to be connected to specialized measuring circuit TERMINALS are connected. The
466 measurements of 6.3 are made to establish that the levels of 6.3.1 and 6.3.2 are not exceeded
467 when each of the following voltages is applied to each other measuring circuit TERMINAL, if
468 applicable:
469 a) highest RATED a.c. voltage at any RATED MAINS frequency;
470 b) highest RATED d.c. voltage;
471 c) highest RATED a.c. voltage at the related maximum RATED measurement frequency.
472 6.7.1.3 CREEPAGE DISTANCES
473 Add the following new paragraph after the third paragraph:
474 For HAND-HELD multimeter not powered from the MAINS or the measuring circuit, the applicable
475 values of CREEPAGE DISTANCES from material group I are allowed to be applied to all materials.
476 6.7.1.5 Requirements for insulation according to type of circuit
477 Replace the text with the following:
478 Requirements for insulation in particular types of circuits are specified as follows:
479 a) in 6.7.2 for MAINS CIRCUITS of OVERVOLTAGE CATEGORY II with a nominal supply voltage up
480 to 300 V;
481 b) in 6.7.3 for secondary circuits separated from the circuits in a) only by means of a
482 transformer;
483 c) in Clause K.1 for MAINS CIRCUITS of OVERVOLTAGE CATEGORY III or IV or for OVERVOLTAGE
484 CATEGORY II over 300 V;
485 d) in Clause K.2 for secondary circuits separated from the circuits in c) only by means of a
486 transformer;
487 e) in Clause K.3 for circuits that have one or more of the following characteristics:
488 1) the maximum possible TRANSIENT OVERVOLTAGE is limited by the supply source or within
489 the HAND-HELD multimeter to a known level below the level assumed for the MAINS
490 CIRCUIT;
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491 2) the maximum possible TRANSIENT OVERVOLTAGE is above the level assumed for the MAINS
492 CIRCUIT;
493 3) the WORKING VOLTAGE is the sum of voltages from more than one circuit, or is a mixed
494 voltage;
495 4) the WORKING VOLTAGE includes a recurring peak voltage that may include a periodic non-
496 sinusoidal waveform or a non-periodic waveform that occurs with some regularity;
497 5) the WORKING VOLTAGE has a frequency above 30 kHz;
498 6) the circuit is a measuring circuit where MEASUREMENT CATEGORIES do not apply;
499 f) in Clause K.101 for measuring circuits RATED for MEASUREMENT CATEGORIES.
500 NOTE 1 See Annex I for line-to-neutral voltage pertinent to MAINS system type and nominal voltage.
501 NOTE 2 These requirements are illustrated in the flowchart of Figure DD.1.
502 NOTE 3 See Clause K.3 for requirements for switching circuits such as a switching power supply.
503 The TRANSIENT OVERVOLTAGE levels for the MAINS correspond to the impulse voltages values
504 specified in Table 102.
505 6.8.1 General
506 Replace the second and third paragraphs with th
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