IEC 61010-2-033:2023
(Main)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
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
Relations
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
your local IEC member National Committee for further information.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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.
IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
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.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
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
6.6 Connections to external circuits . 50
6.6.1 General . 50
6.6.2 TERMINALS for external circuits . 51
6.6.3 Circuits with TERMINALS which are HAZARDOUS LIVE . 51
6.6.4 TERMINALS for stranded conductors . 51
6.6.101 Measuring circuit TERMINALS. 51
6.7 Insulation requirements . 53
6.7.1 The nature of insulation . 53
6.7.2 Insulation for MAINS CIRCUITS of OVERVOLTAGE CATEGORY II with a
nominal supply voltage up to 300 V . 56
6.7.3 Insulation for secondary circuits derived from MAINS CIRCUITS of
OVERVOLTAGE CATEGORY II up to 300 V . 60
6.8 Procedure for voltage tests . 65
6.8.1 General . 65
6.8.2 Humidity preconditioning . 66
6.8.3 Test procedures . 67
6.9 Constructional requirements for protection against electric shock . 68
– 4 – IEC 61010-2-033:2023 EXV © IEC 2023
6.9.1 General . 68
6.9.2 Insulating materials . 68
6.9.3 Colour coding . 68
6.10 Connection to the MAINS supply source and connections between parts of
equipment . 68
6.10.1 MAINS supply cords . 68
6.10.2 Fitting of non-detachable MAINS supply cords . 69
6.10.3 Plugs and connectors . 71
6.11 Disconnection from supply source . 71
6.11.1 General . 71
6.11.2 Exceptions . 71
6.11.3 Requirements according to type of equipment . 72
6.11.4 Disconnecting devices . 72
6.101 Hand-held multimeter ratings . 73
7 Protection against mechanical HAZARDS . 73
7.1 General . 73
7.2 Sharp edges . 73
7.3 Moving parts . 74
7.3.1 General . 74
7.3.2 Exceptions . 74
7.3.3 RISK assessment for mechanical HAZARDS to body parts . 74
7.3.4 Limitation of force and pressure . 75
7.3.5 Gap limitations between moving parts . 76
7.4 Stability . 78
7.5 Provisions for lifting and carrying . 79
7.5.1 General . 79
7.5.2 Handles and grips . 79
7.5.3 Lifting devices and supporting parts. 79
7.6 Wall mounting . 79
7.7 Expelled parts . 80
8 Resistance to mechanical stresses . 80
8.1 General . 80
8.2 ENCLOSURE rigidity tests . 81
8.2.1 Static test . 81
8.2.2 Impact test . 81
8.3 Drop test . 82
8.3.1 Equipment other than HAND-HELD EQUIPMENT and DIRECT PLUG-IN
................................................................................................. 82
EQUIPMENT
8.3.2 HAND-HELD EQUIPMENT and DIRECT PLUG-IN EQUIPMENT . 83
9 Protection against the spread of fire and arc flash . 83
9.1 General . 83
9.2 Eliminating or reducing the sources of ignition within the equipment . 85
9.3 Containment of fire within the equipment, should it occur . 85
9.3.1 General . 85
9.3.2 Constructional requirements . 85
9.4 Limited-energy circuit . 88
9.5 Requirements for equipment containing or using flammable liquids . 89
9.6 Overcurrent protection . 89
9.6.1 General . 89
9.6.2 PERMANENTLY CONNECTED EQUIPMENT . 90
9.6.3 Other equipment . 90
9.101 Protection of measuring circuits . 90
9.101.1 General . 90
9.101.2 Protection against mismatches of inputs and ranges . 91
9.101.3 Protection against MAINS overvoltages . 93
10 Equipment temperature limits and resistance to heat . 94
10.1 Surface temperature limits for protection against burns . 94
10.2 Temperatures of windings . 95
10.3 Other temperature measurements . 96
10.4 Conduct of temperature tests . 96
10.4.1 General . 96
10.4.2 Temperature measurement of heating equipment . 96
10.4.3 Equipment intended for installation in a cabinet or a wall . 97
10.5 Resistance to heat. 97
10.5.1 Integrity of CLEARANCES and CREEPAGE DISTANCES . 97
10.5.2 Non-metallic ENCLOSURES . 97
10.5.3 Insulating material . 97
11 Protection against HAZARDS from fluids and solid foreign objects . 98
11.1 General . 98
11.2 Cleaning . 99
11.3 Spillage . 99
11.4 Overflow . 99
11.5 Battery electrolyte . 99
11.6 Equipment RATED with a degree of ingress protection (IP code) . 100
11.6.1 General . 100
11.6.2 Conditions for testing . 100
11.6.3 Protection against solid foreign objects (including dust) . 100
11.6.4 Protection against water . 101
11.7 Fluid pressure and leakage . 101
11.7.1 Maximum pressure . 101
11.7.2 Leakage and rupture at high pressure . 101
11.7.3 Leakage from low-pressure parts . 102
11.7.4 Overpressure safety device . 103
12 Protection against radiation, including laser sources, and against sonic and
ultrasonic pressure . 103
12.1 General . 103
12.2 Equipment producing ionizing radiation . 103
12.2.1 Ionizing radiation . 103
12.2.2 Accelerated electrons . 104
12.3 Optical radiation . 104
12.4 Microwave radiation . 105
12.5 Sonic and ultrasonic pressure . 105
12.5.1 Sound level . 105
12.5.2 Ultrasonic pressure. 106
12.6 Laser sources . 107
13 Protection against liberated gases and substances, explosion and implosion . 107
13.1 Poisonous and injurious gases and substances . 107
13.2 Explosion and implosion . 107
– 6 – IEC 61010-2-033:2023 EXV © IEC 2023
13.2.1 Components . 107
13.2.2 Batteries and battery charging . 107
13.2.3 Implosion of cathode ray tubes . 108
14 Components and subassemblies . 108
14.1 General . 108
14.2 Motors . 109
14.2.1 Motor temperatures . 109
14.2.2 Series excitation motors . 109
14.3 Overtemperature protection devices . 110
14.4 Fuse holders . 110
14.5 MAINS voltage selection devices . 110
14.6 MAINS transformers tested outside equipment . 110
14.7 Printed wiring boards . 111
14.8 Not used. 111
14.101 Probe assemblies and accessories . 111
15 Protection by interlocks . 111
15.1 General . 111
15.2 Prevention of reactivating . 111
15.3 Reliability . 111
16 HAZARDS resulting from application . 112
16.1 REASONABLY FORESEEABLE MISUSE . 112
16.2 Ergonomic aspects . 112
17 RISK assessment . 112
101 Measuring circuits . 113
101.1 General . 113
101.2 Current measuring circuits . 113
101.3 Indicating devices . 113
101.3.1 General . 113
101.3.2 Battery level . 114
101.3.3 Over-range indication . 114
101.3.4 Permanent overvoltages . 114
Annex A (normative) Measuring circuits for touch current (see 6.3) . 116
Annex B (normative) Standard test fingers (see 6.2) . 119
Annex C (normative) Measurement of CLEARANCES and CREEPAGE DISTANCES . 121
Annex D (normative) Parts between which insulation requirements are specified (see
6.4 and 6.5.3) . 125
Annex E (informative) Guideline for reduction of POLLUTION DEGREES . 128
Annex F (normative) ROUTINE TESTS . 129
Annex G (informative) Leakage and rupture from fluids under pressure . 131
Annex H (normative) Qualification of conformal coatings for protection against
POLLUTION . 136
Annex I (informative) Line-to-neutral voltages for common MAINS supply systems . 139
Annex J (informative) RISK assessment . 141
Annex K (normative) Insulation requirements not covered by 6.7 . 144
Annex L (informative) Index of defined terms . 169
Annex AA (normative) MEASUREMENT CATEGORIES . 171
Annex BB (informative) HAZARDS pertaining to measurements performed in certain
environments . 174
Annex CC (informative) 4 mm "banana" TERMINALS . 177
Annex DD (informative) Flowchart for insulation according to the type of circuit . 179
Annex EE (informative) Determination of CLEARANCES for Table 101 . 182
Bibliography . 183
Figure 1 – Measurements through openings in ENCLOSURES . 41
Figure 2 – Maximum duration of short-term ACCESSIBLE voltages in SINGLE FAULT
(see 6.3.2 a)) . 43
CONDITION
Figure 3 – Capacitance level versus voltage in NORMAL CONDITION and SINGLE FAULT
CONDITION (see 6.3.1 c) and 6.3.2 c)) . 44
Figure 4 – Acceptable arrangement of protective means against electric shock . 46
Figure 5 – Examples of binding screw assemblies . 48
Figure 6 – Distance between conductors on an interface between two layers . 58
Figure 7 – Distance between adjacent conductors along an interface of two inner
layers. 58
Figure 8 – Distance between adjacent conductors located between the same two
layers. 59
Figure 9 – Detachable MAINS supply cords and connections . 69
Figure 10 – Impact test using a sphere . 82
Figure 11 – Flow chart to explain the requirements for protection against
the spread of fire . 84
Figure 12 – Baffle . 87
Figure 13 – Area of the bottom of an ENCLOSURE to be constructed as specified in
9.3.2 c) 1) . 87
Figure 14 – Ball-pressure test apparatus. 98
Figure 16 – Ratio between test pressure and maximum working pressure . 102
Figure 15 – Flow chart for conformity options 14.1 a), b), c) and d) . 109
Figure A.1 – Measuring circuit for a.c. with frequencies up to 1 MHz and for d.c. . 116
Figure A.2 – Measuring circuits for sinusoidal a.c. with frequencies up to 100 Hz and
for d.c. . 117
Figure A.3 – Current measuring circuit for electrical burns . 118
Figure A.4 – Current measuring circuit for wet contact . 118
Figure B.1 – Rigid test finger . 119
Figure B.2 – Jointed test finger . 120
Figure C.1 – Examples of methods of measuring CLEARANCES and CREEPAGE DISTANCES . 124
Figures D.1a) to d) – Protection between HAZARDOUS LIVE circuits and ACCESSIBLE parts . 126
Figures D.1e) to h) – Protection between HAZARDOUS LIVE circuits and circuits with
ACCESSIBLE external TERMINALS . 126
Figures D.2 a) and D.2 b) – Protection between a HAZARDOUS LIVE internal circuit and
an ACCESSIBLE part which is not bonded to other ACCESSIBLE parts . 127
Figures D.2 c) and D.2 d) – Protection between a HAZARDOUS LIVE primary circuit and
ACCESSIBLE external TERMINALS . 127
circuits which have
Figure D.3 – Protection of external ACCESSIBLE TERMINALS of two HAZARDOUS LIVE
circuits . 127
Figure G.1 – Conformity verification process (see G.2) . 132
– 8 – IEC 61010-2-033:2023 EXV © IEC 2023
Figure H.1 – Test sequence and conformity . 138
Figure J.1 – Iterative process of RISK assessment and RISK reduction . 141
Figure J.2 – RISK reduction . 142
Figure K.1 – Distance between conductors on an interface between two layers . 148
Figure K.2 – Distance between adjacent conductors along an interface of an inner
layer . 149
Figure K.3 – Distance between adjacent conductors located between the same two
layers. 150
Figure K.4 – Example of recurring peak voltage . 162
Figure AA.1 – Example to identify the locations of MEASUREMENT CATEGORIES . 172
Figure CC.1 – Recommended dimensions of 4 mm TERMINALS . 178
Figure DD.1 – Requirements for CLEARANCE, CREEPAGE DISTANCE and solid insulation . 181
Table 1 – Symbols . 33
Table 2 – Tightening torque for binding screw assemblies . 48
Table 101 – CLEARANCES for unmated measuring circuit TERMINALS. 52
Table 3 – Multiplication factors for CLEARANCES of equipment RATED for operation at
altitudes up to 5 000 m . 54
TABLE 4 – CLEARANCES and CREEPAGE DISTANCES for MAINS CIRCUITS of OVERVOLTAGE
CATEGORY II up to 300 V . 56
Table 5 – Test voltages for solid insulation in MAINS CIRCUITS of OVERVOLTAGE
II up to 300 V . 57
CATEGORY
Table 6 – CLEARANCES and test voltages for secondary circuits derived from MAINS
CIRCUITS of OVERVOLTAGE CATEGORY II up to 300 V. 61
Table 7 – CREEPAGE DISTANCES for secondary circuits . 62
Table 8 − Minimum values for distance or thickness (see 6.7.3.4.2 to 6.7.3.4.4) . 64
Table 9 – Distances between TERMINALS and foil . 65
Table 10 – Correction factors according to test site altitude for test voltages for
CLEARANCES . 66
Table 11 – Values for physical tests on cord anchorages . 70
Table 12 – Protective measures against mechanical HAZARDS to body parts . 75
Table 13 – Minimum maintained gaps to prevent crushing for different body parts . 77
Table 14 – Maximum gaps to prevent access for different body parts . 77
Table 15 – Impact energy levels, test height and corresponding IK codes . 82
Table 16 – Acceptable perforation of the bottom of an ENCLOSURE . 86
Table 17 – Limits of maximum available current . 88
Table 18 – Values for overcurrent protection devices . 89
Table 102 – Impulse voltages for circuits connected to MAINS. 94
Table 19 – Surface temperature limits in NORMAL CONDITION . 95
Table 20 – Maximum temperatures for insulation material of windings . 95
Table 22 – Lamp or lamp systems considered photobiologically safe . 105
Table 23 – Lamp or lamp systems considered photobiologically safe under certain
conditions . 105
Table C.1 – Dimensions of X . 121
Table E.1 – Environmental situations . 128
Table E.2 – Reduction of POLLUTION DEGREES . 128
Table F.1 – Test voltages for ROUTINE TESTS of MAINS CIRCUITS . 130
Table G.1 – Test pressures for equipment with pressures above 14 Mpa . 134
Table H.1 – Test parameters, test conditions and test procedures . 137
Table I.1 – Line-to-neutral voltages for common MAINS supply systems . 139
Table J.1 – Severity of harm . 143
Table J.2 – Probability of harm . 143
Table J.3 – RISK category . 143
Table K.1 – Multiplication factors
...
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
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
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
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.
IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always have
committee, …). It also gives information on projects, replaced access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
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.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.
A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.
Recherche de publications IEC - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications IEC gratuitement tous les aperçus des publications. Avec un
en utilisant différents critères (numéro de référence, texte, abonnement, vous aurez toujours accès à un contenu à jour
comité d’études, …). Elle donne aussi des informations sur les adapté à vos besoins.
projets et les publications remplacées ou retirées.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
Le premier dictionnaire d'électrotechnologie en ligne au monde,
Restez informé sur les nouvelles publications IEC. Just
avec plus de 22 300 articles terminologiques en anglais et en
Published détaille les nouvelles publications parues.
français, ainsi que les termes équivalents dans 19 langues
Disponible en ligne et une fois par mois par email.
additionnelles. Egalement appelé Vocabulaire
Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
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
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 61010-2-033 has been prepared by IEC technical committee 66: Safety of measuring,
control and laboratory equipment. It is an International Standard.
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;
TERMINALS in partially mated position
3) in 6.6.101.3, requirements for measuring circuit
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;
CLEARANCE calculation;
j) in K.3.2, new Table K.15 and Table K.16 for
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.
The text of this International Standard is based on the following documents:
Draft Report on voting
66/787/FDIS 66/797/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts of the IEC 61010 series, under the general title Safety requirements for
electrical equipment for measurement, control, and laboratory use, can be found on the IEC
website.
This document is to be used in conjunction with IEC 61010-1:2010 and
IEC 61010-1:2010/AMD1:2016.
This document supplements or modifies the corresponding clauses in IEC 61010-1 so as to
convert that publication into the IEC standard: Particular requirements for hand-held
multimeters and other meters for domestic and professional use, capable of measuring mains
voltage.
– 6 – IEC 61010-2-033:2023 © IEC 2023
Where a particular subclause of IEC 61010-1 is not mentioned in this document, that subclause
applies as far as is reasonable. Where this document states "addition", "modification",
"replacement", or "deletion" the relevant requirement, test specification or note in IEC 61010-1
should be adapted accordingly.
In this standard:
a) the following print types are used:
– requirements: in roman type;
– NOTES: in small roman type;
– conformity and tests: in italic type;
– terms used throughout this standard which have been defined in Clause 3: SMALL ROMAN
;
CAPITALS
b) subclauses, figures, tables and notes which are additional to those in IEC 61010-1 are
numbered starting from 101. Additional annexes are lettered starting from AA and additional
list items are lettered from aa).
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document 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.
INTRODUCTION
IEC 61010-1 specifies the safety requirements that are generally applicable to all equipment
within its scope. For certain types of equipment, the requirements of IEC 61010-1 and its
amendment will be supplemented or modified by the special requirements of one or more
standard from the IEC 61010-2 series which is/are read in conjunction with the requirements of
IEC 61010-1.
1) IEC 61010-2-030:2023 specifies the safety requirements for equipment with testing or
measuring circuits which are connected for test or measurement purposes to devices or
circuits outside the measurement equipment itself.
2) IEC 61010-2-032:2023 specifies the safety requirements for hand-held and
hand-manipulated current sensors for measuring, detecting, injecting current, or indicating
current waveforms on circuits without physically opening the current path of the circuit being
measured.
Most of the requirements of IEC 61010-2-030:2023 have been included in
IEC 61010-2-032:2023. Equipment within the scopes of both IEC 61010-2-030:2023 and
IEC 61010-2-032:2023 is considered to be covered by the requirements of IEC 61010-2-
032:2023.
However, for current sensors in combined equipment with protective bonding and automatic
disconnection of the supply, IEC 61010-2-030:2023 and IEC 61010-2-032:2023 are read in
conjunction.
3) This document specifies the safety requirements for hand-held multimeters and other meters
for domestic and professional use, capable of measuring mains voltage, intended to
measure voltage and other electrical quantities such as resistance or current.
All relevant requirements of IEC 61010-2-030:2023 have been included in this document.
4) IEC 61010-2-034:2023 specifies the safety requirements for measurement equipment for
insulation resistance and test equipment for electric strength which are connected to units,
lines or circuits for test or measurement purposes.
All relevant requirements of IEC 61010-2-030:2023 have been included in
IEC 61010-2-034:2023. However, for equipment within the scope of IEC 61010-2-032:2023
and IEC 61010-2-034:2023, these standards are read in conjunction.
IEC 61010-031 specifies the safety requirements for hand-held and hand-manipulated probe
assemblies and their related accessories intended to be used in particular with equipment in
the scope of IEC 61010-2-030, IEC 61010-2-032, this document, and IEC 61010-2-034. These
probe assemblies are for non-contact or direct electrical connection between a part and
electrical test and measurement equipment. They may be fixed to the equipment or be
detachable accessories for the equipment.
– 8 – IEC 61010-2-033:2023 © IEC 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
1 Scope and object
IEC 61010-1:2010, Clause 1 and IEC 61010-1:2010/AMD1:2016, Clause 1 apply except as
follows:
1.1.1 Equipment included in scope
Replace the existing text with the following:
This document 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.
1.1.2 Equipment excluded from scope
Add the following new item to the list and the following paragraph:
aa) IEC 61557 (all parts), Electrical safety in low voltage distribution systems up to
1 000 V AC and 1 500 V DC – Equipment for testing, measuring or monitoring of
protective measures
HAND-HELD EQUIPMENT such as oscilloscopes, wattmeters, process control multimeters not
RATED for measuring voltage on a live MAINS, clamp multimeters and communications test sets
are not within the scope of this document.
1.2.1 Aspects included in scope
Replace item c) of the second paragraph with the following new item c):
c) spread of fire or arc flash from the hand-held multimeters (see Clause 9);
Replace the third paragraph with the following two new paragraphs:
HAZARDS arising from NORMAL USE, REASONABLY
Requirements for protection against
FORESEEABLE MISUSE and ergonomic factors are specified in Clause 16 and Clause 101.
Annex BB provides guidance to equipment manufacturers on HAZARDS that should be
considered for equipment intended for performing tests and measurements on hazardous
conductors, including MAINS conductors and telecommunication network conductors.
2 Normative references
IEC 61010-1:2010, Clause 2 and IEC 61010-1:2010/AMD1:2016, Clause 2 apply except as
follows:
Replace the following existing normative references:
IEC 60364-4-44:2007, Low-voltage electrical installations – Part 4-44: Protection for safety –
Protection against voltage disturbances and electromagnetic disturbances
IEC 60364-4-44:2007/AMD1:2015
IEC 61010-031, Safety requirements for electrical equipment for measurement, control and
laboratory use – Part 031: Safety requirements for hand-held probe assemblies for electrical
measurement and test
IEC 61180 (all parts), High-voltage test techniques for low-voltage equipment
IEC 61180-1, High-voltage test techniques for low-voltage equipment – Part 1: Definitions, test
and procedure requirements
IEC 61180-2, High-voltage test techniques for low-voltage equipment – Part 2: Test equipment
with the following new normative references:
IEC 60364-4-44:2007, Low-voltage electrical installations – Part 4-44: Protection for safety –
Protection against voltage disturbances and electromagnetic disturbances
IEC 60364-4-44:2007/AMD1:2015
IEC 60364-4-44:2007/AMD2:2018
IEC 61010-031:2022, Safety requirements for electrical equipment for measurement, control,
and laboratory use – Part 031: Safety requirements for hand-held and hand-manipulated probe
assemblies for electrical test and measurement
IEC 61180:2016, High-voltage test techniques for low-voltage equipment – Definitions, test and
procedure requirements, test equipment
Add the following new normative references:
IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-5:2014/AMD1:2017
IEC 61010-2-030:2023, Safety requirements for electrical equipment for measurement, control,
and laboratory use – Part 2-030: Special requirements for testing and measuring circuits
IEC 61010-2-032:2023, Safety requirements for electrical equipment for measurement, control,
and laboratory use – Part 2-032: Particular requirements for hand-held and hand-manipulated
current sensors for electrical test and measurement
___________
IEC 61180:2016 replaces everywhere IEC 61180, IEC 61180-1 and IEC 61180-2 are referenced in IEC 61010-1.
– 10 – IEC 61010-2-033:2023 © IEC 2023
3 Terms and definitions
IEC 61010-1:2010, Clause 3 and IEC 61010-1:2010/AMD1:2016, Clause 3 apply except as
follows:
3.5 Safety terms
Replace the definition of 3.5.4 with the following new definition:
3.5.4
MAINS
electricity supply system
Add the following new term and definition:
3.5.101
MEASUREMENT CATEGORY
classification of testing and measuring circuits according to the type of MAINS to which they are
intended to be connected
4 Tests
IEC 61010-1:2010, Clause 4 and IEC 61010-1:2010/AMD1:2016, Clause 4 apply except as
follows:
4.3.2.5 MAINS supply
Replace the existing title and text with the following:
4.3.2.5 Power supply
The following requirements apply:
a) the voltage of the power supply connected to the MAINS shall be between 90 % and 110 %
of any RATED supply voltage for which the hand-held multimeter can be set or, if the hand-
held multimeter is RATED for a greater fluctuation, at any supply voltage within the fluctuation
range;
b) the MAINS frequency shall be any RATED frequency;
c) hand-held multimeters for both a.c. and d.c. shall be connected to an a.c. or d.c. supply;
d) hand-held multimeters powered from MAINS by single-phase a.c. shall be connected both
with normal and reverse polarity;
e) if the means of connection permit reversal, battery-operated and d.c. hand-held multimeters
shall be connected with both reverse and normal polarity.
4.3.2.6 Input and output voltages
Replace the existing title and text with the following:
4.3.2.6 Input and output voltages or currents
Input and output voltages or currents, including floating voltages but excluding the supply
voltage connected to the MAINS, shall be set to any voltage or current within their RATED range,
in normal and reverse polarity if possible.
Add the following new subclause:
4.4.2.101 Surge protective devices
Surge protective devices used in MAINS CIRCUITS or in circuits measuring MAINS shall be short-
circuited and open-circuited.
5 Marking and documentation
IEC 61010-1:2010, Clause 5 and IEC 61010-1:2010/AMD1:2016, Clause 5 apply except as
follows:
5.1.2 Identification
Add the following note after the existing note:
NOTE 101 Some national regulations can require a marking to indicate the name and edition of the standard used
for compliance evaluation.
5.1.5 TERMINALS, connections and operating devices
5.1.5.1 General
Replace the first paragraph with the following:
If necessary for safety, an indication shall be given of the purpose of TERMINALS, connectors,
controls, and indicators. Where there is insufficient space, symbol 14 from Table 1 may be used.
5.1.5.2 TERMINALS
Replace the existing item d) with the following item d):
d) TERMINALS supplied from the interior of the hand-held multimeter and which could be
HAZARDOUS LIVE, with the voltage, current, charge or energy value or range, or with
symbol 12 of Table 1;
Add the following new item to the list:
aa) TERMINALS supplied from other TERMINALS which could be HAZARDOUS LIVE, with
symbol 12 or symbol 14 of Table 1.
Add the following new subclause:
5.1.5.101 Measuring circuit TERMINALS
Measuring circuit TERMINALS are usually arranged in pairs or sets. Each pair or set of TERMINALS
may have a RATED voltage or a RATED current, or both, within that set, and each individual
TERMINAL will have a RATED voltage to earth. For some hand-held multimeters, the RATED voltage
between TERMINALS may be different from the RATED voltage to earth. Markings shall be clear
to avoid misunderstanding.
Each pair or set of measuring circuit TERMINALS that are intended to be used together shall be
marked with the value of the RATED voltage or the RATED current as applicable to the pair or set
of TERMINALS.
TERMINALS of measuring circuits RATED for MAINS voltage measurements shall be marked with
"CAT lll" or "CAT IV" and its RATED a.c. r.m.s. line-to-neutral or d.c. voltage as applicable.
TERMINALS with these two types of MEASUREMENT CATEGORY is permissible.
Marking those
Marking of MEASUREMENT CATEGORY II is not allowed. Other measuring circuit TERMINALS shall
be marked with the value of the RATED voltage to earth.
– 12 – IEC 61010-2-033:2023 © IEC 2023
NOTE CLEARANCES and solid insulation for MEASUREMENT CATEGORIES are specified for a nominal a.c. r.m.s. line-
to-neutral or d.c. voltage of MAINS being measured. Neutral is considered to be earthed (see Table K.101 Annex I).
Measuring circuit TERMINALS that do not have a RATING for connection to voltages above the
levels of 6.3.1, may be marked with alternative markings.
Measuring circuit TERMINALS which are dedicated only for connection to specific TERMINALS of
other equipment need not be marked provided that there is a means of identifying these
TERMINALS.
TERMINAL markings shall be visible when the hand-held multimeter is ready for NORMAL USE with
connectors and TERMINALS mated and shall reference the applicable TERMINALS.
Conformity is checked by inspection.
5.2 Warning markings
Replace the existing text with the following text:
Warning markings specified in this document shall meet the following requirements.
Warning markings shall be visible when the hand-held multimeter is ready for NORMAL USE. If a
warning applies to a particular part of the hand-held multimeter, the marking shall be placed on
or near that part.
The size of warning markings shall be as follows.
a) Symbols shall be at least 2,75 mm high. Text shall be at least 1,5 mm high and contrast in
colour with the background.
b) Symbols or text moulded, stamped or engraved in a material shall be at least 2,0 mm high.
If not contrasting in colour, they shall have a depth or raised height of at least 0,5 mm.
If it is necessary for the RESPONSIBLE BODY or OPERATOR to refer to the instruction manual to
preserve the protection afforded by the hand-held multimeter, the hand-held multimeter shall
be marked with symbol 14 of Table 1. Symbol 14 is not required to be used together with
symbols which are explained in the manual.
If the instructions for use state that an OPERATOR is permitted to gain access, using a TOOL, to
a part which in NORMAL USE may be HAZARDOUS LIVE, there shall be a warning marking which
states that the hand-held multimeter shall be isolated or disconnected from the HAZARDOUS LIVE
voltage before access.
NOTE National regulations can require safety markings in a nationally accepted language.
Conformity is checked by inspection.
5.4.1 General
Replace the first paragraph except its list with the following paragraph:
The following documentation necessary for safety purposes, as needed by the OPERATOR or the
RESPONSIBLE BODY, shall be provided with the hand-held multimeter, in an accepted language
of the country where the product is intended to be placed on the market. The following safety
documentation for service personnel authorized by the manufacturer shall be made available
to those personnel, in a language selected by the manufacturer:
Add the following two new items to the list and a new paragraph at the end of the list:
aa) the documentation shall indicate that probe assemblies to be used for MAINS
measurements shall be RATED as appropriate for MEASUREMENT CATEGORY III or IV
according to IEC 61010-031:2022 and shall have a voltage RATING of at least the voltage
of the circuit to be measured;
MEASUREMENT CATEGORY (see 5.1.5.101).
bb) information about each relevant
If the hand-held multimeter is capable of measuring in multiple MEASUREMENT CATEGORY RATINGS
MEASUREMENT
for the same measuring circuit, the documentation shall clearly identify the
CATEGORIES where the hand-held multimeter may be used and where it shall not be used.
6 Protection against electric shock
IEC 61010-1:2010, Clause 6 and IEC 61010-1:2010/AMD1:2016, Clause 6 apply except as
follows:
6.5.1 General
Replace the text, the conformity statement, and Figure 4 with the following text, conformity
statement and Figure 4:
CCESSIBLE parts shall be prevented from becoming HAZARDOUS LIVE in SINGLE FAULT CONDITION.
A
The primary means of protection (see 6.4) shall be supplemented by one of a) or b) below.
Alternatively, one of the single means of protection c) or d) below shall be used (see Figure 4
and Annex DD).
a) SUPPLEMENTARY INSULATION (see 6.5.3);
b) current- or voltage-limiting device (see 6.5.6);
c) REINFORCED INSULATION (see 6.5.3);
d) PROTECTIVE IMPEDANCE (see 6.5.4).
Conformity is checked by inspection and as specified in 6.5.3, 6.5.4, or 6.5.6, as applicable.
– 14 – IEC 61010-2-033:2023 © IEC 2023
Figure 4 – Acceptable arrangement of protective means against electric shock
6.5.2 Protective bonding
Replace the existing title of 6.5.2 with the following title and delete the text:
6.5.2 Not used
6.5.5 Automatic disconnection of the supply
Replace the existing title of 6.5.5 with the following title and delete the text:
6.5.5 Not used
6.6 Connections to external circuits
Add the following new subclause and table:
6.6.101 Measuring circuit TERMINALS
6.6.101.1 General
When determining the values of CREEPAGE DISTANCES for measuring circuit TERMINALS of a hand-
held multimeter intended to be connected only to a hand-held probe assembly complying with
IEC 61010-031:2022, or to a current sensor complying with IEC 61010-2-032:2023, the
applicable values of CREEPAGE DISTANCES from material group I are allowed to be applied to all
material groups.
Requirements for measuring circuit TERMINALS in unmated position, partially mated or mated
position are defined respectively in 6.6.101.2, 6.6.101.3 and 6.6.101.4. Requirements for
specialized measuring circuit TERMINALS are defined in 6.6.101.5.
Annex CC provides information regarding the recommended dimensions of 4 mm "banana"
TERMINALS.
6.6.101.2 Measuring circuit TERMINALS in unmated position
The following requirements apply to measuring circuits TERMINALS in unmated position when
RATED voltages are applied to any other TERMINALS of the hand-held multimeter.
ACCESSIBLE parts of unmated measuring circuit TERMINALS shall be insulated from HAZARDOUS
LIVE parts by PROTECTIVE IMPEDANCE or CLEARANCES and CREEPAGE DISTANCES meeting the
requirements of a) and b) as follows.
a) For measuring circuit TERMINALS with a voltage RATING up to 3 000 V, the CLEARANCES shall
be at least the applicable values of Table 101.
Table 101 – CLEARANCES for unmated measuring circuit TERMINALS
Maximum voltage CLEARANCE
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.
If the hand-held multimeter is RATED to operate at an altitude greater than 2 000 m, the value
of the CLEARANCE shall be multiplied by the applicable factor of Table 3.
Conformity is checked by one of the following tests:
i) inspection and measurement of CLEARANCE from the closest approach of the test finger
touching the external parts of the TERMINAL in the least favourable position
(see Figure 1), or
TERMINAL stressed
ii) the a.c. voltage test of 6.8.3.1 or the d.c. voltage test of 6.8.3.2 for
only by d.c. with a duration of at least 5 s, or the impulse voltage test of 6.8.3.3, using
the applicable test voltage of Table K.16 for the required CLEARANCE.
Correction factors of Table 10 are applicable to the values of test voltages for CLEARANCES
given in Table K.16.
b) The CREEPAGE DISTANCE values shall be at least the applicable CLEARANCE values defined
in a) of this Subclause 6.6.101.2.
Conformity is checked by inspection and measurement of CREEPAGE DISTANCES from the
closest approach of the test finger touching the external parts of TERMINAL in the least
favourable position.
In addition for hand-held multimeters RATED for WET LOCATIONS, conductive parts of TERMINALS
with voltage RATINGS above 16 V a.c. r.m.s., 22,6 V a.c. peak and 35 V d.c. shall not be
ACCESSIBLE.
Conformity is checked by inspection and measurement.
– 16 – IEC 61010-2-033:2023 © IEC 2023
6.6.101.3 Measuring circuit TERMINALS in partially mated position
ACCESSIBLE parts of measuring circuit TERMINALS in partially mated position shall be insulated
from HAZARDOUS LIVE parts by BASIC INSULATION.
Conformity is checked by inspection and measurement.
6.6.101.4 Measuring circuit TERMINALS in mated position
ACCESSIBLE parts of measuring circuit TERMINALS in mated position which are not intended to
be hand-held or touched during the measurement operation shall be insulated from HAZARDOUS
LIVE parts by BASIC INSULATION.
ACCESSIBLE parts of TERMINALS in mated position of other measuring circuits shall be insulated
HAZARDOUS LIVE parts by DOUBLE INSULATION or REINFORCED INSULATION.
from
Conformity is checked by inspection and measurement.
6.6.101.5 Specialized measuring circuit TERMINALS
Specialized measuring circuit TERMINALS are TERMINALS intended to be connected to
components, sensors, and devices.
NOTE These specialized TERMINALS include, but are not limited to, TERMINALS for thermocouple sockets.
Components, sensors, and devices intended to be connected to specialized measuring circuit
TERMINALS shall not be both ACCESSIBLE and HAZARDOUS LIVE, in either NORMAL CONDITION or in
SINGLE FAULT CONDITION, even when the highest RATED voltage is applied to any other measuring
circuit TERMINAL.
Conformity is checked by inspection and measurement. Components, sensors, and devices
intended to be connected to specialized measuring circuit TERMINALS are connected. The
measurements of 6.3 are made to establish that the levels of 6.3.1 and 6.3.2 are not exceeded
when each of the following voltages is applied to each of the other measuring circuit TERMINALS,
if applicable:
a) highest RATED a.c. voltage at any RATED MAINS frequency;
b) highest RATED d.c. voltage;
c) highest RATED a.c. voltage at the related maximum RATED measurement frequency.
6.7.1.3 CREEPAGE DISTANCES
Add the following new paragraph after the third paragraph:
For a hand-held multimeter not powered from the MAINS or from the measuring circuit, the
applicable values of CREEPAGE DISTANCES from material group I are allowed to be applied to all
materials.
6.7.1.5 Requirements for insulation according to type of circuit
Replace the text with the following:
Requirements for insulation in particular types of circuits are specified as follows:
a) in 6.7.2 for MAINS CIRCUITS of oVERVOLTAGE CATEGORY II with a nominal supply voltage up
to 300 V;
b) in 6.7.3 for secondary circuits separated from the circuits in a) by means of a transformer
only;
c) in Clause K.1 for MAINS CIRCUITS of OVERVOLTAGE CATEGORY III or IV or for OVERVOLTAGE
CATEGORY II over 300 V;
d) in Clause K.2 for secondary circuits separated from the circuits in c) by means of a
transformer only;
e) in Clause K.3 for circuits that have one or more of the following characteristics:
TRANSIENT OVERVOLTAGE is limited by the supply source or within
1) the maximum possible
the hand-held multimeter to a known level below the level assumed for the MAINS CIRCUIT;
2) the maximum possible TRANSIENT OVERVOLTAGE is above the level assumed for the MAINS
CIRCUIT;
3) the WORKING VOLTAGE is the sum of voltages from more than one circuit, or is a mixed
voltage;
WORKING VOLTAGE includes a recurring peak voltage that may include a periodic
4) the
non-sinusoidal waveform or a non-periodic waveform that occurs with some regularity;
5) the WORKING VOLTAGE has a frequency above 30 kHz;
6) the circuit is a measuring circuit where MEASUREMENT CATEGORIES do not apply;
f) in Clause K.101 for measuring circuits RATED for MEASUREMENT CATEGORIES.
NOTE 1 See Annex I for line-to-neutral voltage pertinent to MAINS type and nominal voltage.
NOTE 2 These requirements are illustrated in the flowchart of Annex DD, Figure DD.1.
NOTE 3 See Clause K.3 for requirements for switching circuits such as a switching power supply.
The TRANSIENT OVERVOLTAGE levels for the MAINS correspond to the impuls
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...