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 61010-2-033:2019 is available as IEC 61010-2-033:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61010-2-033:2019 specifies safety requirements for hand-held multimeters 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 second edition cancels and replaces the first edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- The scope has been reduced to hand-held multimeters. Voltmeters and clamp multimeters have been removed. They are addressed respectively by IEC 61010-2-030 and IEC 61010-2-032. The relevant definitions have been removed.
- Subclause 4.4.2.101 has been relocated into Clause 102.
- Clearances and creepage distances for wet locations and for measuring circuit terminals exceeding 1 000 V a.c. or 1 414 V d.c. have been specified.
- Subclause 14.101 related to "Circuits or components used as transient overvoltage limiting devices in measuring circuits used to measure mains" has been removed.
- References to IEC 61010-031 for probe assemblies and IEC 61010-2-032 for current sensors have been added.
- Requirements for protection against mains overvoltage measuring circuits have been added.
- Clause 102 has been rewritten.
- Requirements for measuring circuits from 1 000 V to 3 000 V have been added.
- An informative Annex CC about dimensions of 4-mm banana terminals has been added.
- A flowchart for insulation according to the type of circuit has been added in a new Annex DD.

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

IEC 61010-2-033:2019 est disponible sous forme de IEC 61010-2-033:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 61010-2-033:2019 spécifie les exigences de sécurité applicables aux 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 deuxième édition annule et remplace la première édition parue en 2012. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- Le domaine d'application a été réduit aux multimètres portatifs. Les voltmètres et les pinces multimétriques ont été supprimés. Ils sont traités respectivement par l'IEC 61010­2­030 et l'IEC 61010-2-032. Les définitions correspondantes ont été supprimées.
- Le 4.4.2.101 a été intégré à l'Article 102.
- Les distances d'isolement et les lignes de fuite applicables aux emplacements humides et aux bornes des circuits de mesure dont la tension alternative est supérieure à 1 000 V ou la tension continue est supérieure à 1 414 V ont été spécifiées.
- Les exigences pour "Circuits ou composants utilisés comme limiteurs de surtensions dans les circuits de mesure utilisés sur un RESEAU" ont été supprimées. Le paragraphe 14.102 a été renuméroté 14.101.
- Des références à l'IEC 61010-031 pour les sondes équipées et à l'IEC 61010-2-032 pour les capteurs de courant ont été ajoutées.
- Des exigences relatives à la protection des circuits de mesure contre les surtensions du réseau ont été ajoutées.
- L'Article 102 a été reformulé.
- Des exigences concernant les circuits de mesure entre 1 000 V et 3 000 V ont été ajoutées.
- Une Annexe CC informative relative aux dimensions des bornes "banane" de 4 mm a été ajoutée.
- Un organigramme de l'isolation selon le type de circuit a été ajouté dans une nouvelle Annexe DD.

General Information

Status
Published
Publication Date
20-Jun-2019
Current Stage
PPUB - Publication issued
Completion Date
21-Jun-2019
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IEC 61010-2-033:2019 - Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-033: Particular requirements for hand-held multimeters and other meters for domestic and professional use, capable of measuring mains voltage
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IEC 61010-2-033
Edition 2.0 2019-06
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 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 RESEAU
IEC 61010-2-033:2019-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61010-2-033
Edition 2.0 2019-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colourcolour
insinsiidede
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
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 RESEAU
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.080; 71.040.10 ISBN 978-2-8322-6995-4

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61010-2-033:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 7

1 Scope and object ............................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 Tests ............................................................................................................................... 9

5 Marking and documentation ........................................................................................... 10

6 Protection against electric shock ................................................................................... 12

7 Protection against mechanical HAZARDS ......................................................................... 16

8 Resistance to mechanical stresses ................................................................................ 16

9 Protection against the spread of fire .............................................................................. 16

10 Equipment temperature limits and resistance to heat ..................................................... 16

11 Protection against HAZARDS from fluids and solid foreign objects ................................... 16

12 Protection against radiation, including laser sources, and against sonic and

ultrasonic pressure ........................................................................................................ 16

13 Protection against liberated gases and substances, explosion and implosion ................ 16

14 Components and subassemblies ................................................................................... 16

15 Protection by interlocks ................................................................................................. 17

16 HAZARDS resulting from application ................................................................................ 17

17 RISK assessment ........................................................................................................... 17

101 Measuring circuits ......................................................................................................... 17

102 Indicating devices .......................................................................................................... 21

Annexes ............................................................................................................................... 24

Annex K (normative) Insulation requirements not covered by 6.7 ......................................... 24

Annex L (informative) Index of defined terms ....................................................................... 30

Annex AA (normative) Measurement categories ................................................................... 31

Annex BB (informative) HAZARDS pertaining to measurements performed in certain

environments ........................................................................................................................ 34

Annex CC (informative) 4-mm "banana" TERMINALS .............................................................. 37

Annex DD (informative) Flowchart for insulation according to the type of circuit ................... 39

Bibliography .......................................................................................................................... 42

Figure 4 – Acceptable arrangement of protective means against electric shock .................... 13

Figure AA.1 – Example to identify the locations of measuring circuits ................................... 32

Figure CC.1 – Recommended dimensions of 4-mm TERMINALS .............................................. 38

Figure DD.1 – Requirements for CLEARANCE, CREEPAGE DISTANCE and solid insulation ........... 41

Table 101 – CLEARANCES and CREEPAGE DISTANCES for measuring circuit TERMINALS

with HAZARDOUS LIVE conductive parts up to 1 000 V a.c. or 1 500 V d.c ................................ 14

Table 102 – Impulse voltages ............................................................................................... 21

Table K.101 – CLEARANCES of measuring circuits RATED for MEASUREMENT CATEGORIES

III and IV ............................................................................................................................... 25

---------------------- Page: 4 ----------------------
IEC 61010-2-033:2019 © IEC 2019 – 3 –

Table K.102 – a.c. test voltages for testing electric strength of solid insulation in

measuring circuits RATED for MEASUREMENT CATEGORIES III and IV ......................................... 26

Table K.103 – Impulse test voltages for testing electric strength of solid insulation in

RATED for MEASUREMENT CATEGORIES III and IV ......................................... 26

measuring circuits
Table K.104 – Test voltages for testing long-term stress of solid insulation in

measuring circuits RATED for MEASUREMENT CATEGORIES III and IV ......................................... 27

Table K.105 – Minimum values for distance or thickness of solid insulation in

measuring circuits RATED for MEASUREMENT CATEGORIES III and IV ......................................... 28

Table AA.1 – Characteristics of MEASUREMENT CATEGORIES ................................................... 33

---------------------- Page: 5 ----------------------
– 4 – IEC 61010-2-033:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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
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

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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.

International Standard IEC 61010-2-033 has been prepared by IEC technical committee 66:

Safety of measuring, control and laboratory equipment.

This second edition cancels and replaces the first edition published in 2012. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) The scope has been reduced to hand-held multimeters. Voltmeters and clamp multimeters

have been removed. They are addressed respectively by IEC 61010-2-030 and
IEC 61010-2-032. The relevant definitions have been removed.
b) Subclause 4.4.2.101 has been relocated into Clause 102.
---------------------- Page: 6 ----------------------
IEC 61010-2-033:2019 © IEC 2019 – 5 –
c) CLEARANCES and CREEPAGE DISTANCES for WET LOCATIONS and for measuring circuit
TERMINALS exceeding 1 000 V a.c. or 1 414 V d.c. have been specified.

d) Subclause 14.101 related to "Circuits or components used as TRANSIENT OVERVOLTAGE

MAINS" has been removed.
limiting devices in measuring circuits used to measure

e) References to IEC 61010-031 for probe assemblies and IEC 61010-2-032 for current

sensors have been added.

f) Requirements for protection against MAINS overvoltage measuring circuits have been

added.
g) Clause 102 has been rewritten.
h) Requirements for measuring circuits from 1 000 V to 3 000 V have been added.

i) An informative Annex CC about dimensions of 4-mm banana TERMINALS has been added.

j) A flowchart for insulation according to the type of circuit has been added in a new

Annex DD.
The text of this standard is based on the following documents:
FDIS Report on voting
66/692/FDIS 66/694/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all the parts in the IEC 61010 series, published under the general title Safety

requirements for electrical equipment for measurement, control, and laboratory use, can be

found on the IEC website.

This Part 2-033 is to be used in conjunction with the latest edition of IEC 61010-1. It was

established on the basis of the third edition (2010) of IEC 61010-1 and its Amendment 1

(2016), hereinafter referred to as Part 1.

This Part 2-033 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 for domestic and professional use, capable of measuring MAINS voltage.

Where a particular subclause of Part 1 is not mentioned in this Part 2-033, that subclause

applies as far as is reasonable. Where this Part 2-033 states "addition", "modification",

"replacement", or "deletion", the relevant requirement, test specification or note in Part 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 Part 1 are numbered

starting from 101. Additional annexes are lettered starting from AA and additional list

items are lettered from aa).
---------------------- Page: 7 ----------------------
– 6 – IEC 61010-2-033:2019 © IEC 2019

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://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 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.
---------------------- Page: 8 ----------------------
IEC 61010-2-033:2019 © IEC 2019 – 7 –
INTRODUCTION

Part 2-030 specifies the safety requirements for equipment with testing and measuring circuits

which are connected for test or measurement purposes to devices or circuits outside the

measurement equipment itself. Requirements of Part 2-030 have been included in this Part 2-

033. Equipment within the scopes of both Part 2-030 and Part 2-033 are considered to be

covered by the requirements of this Part 2-033.

Part 2-032 specifies the safety requirements for hand-held and hand-manipulated current

sensors. For equipment within the scope of Part 2-032 and Part 2-033, only Part 2-032 is

applicable.

Part 2-034 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. For equipment within the scope of Part 2-033 and

Part 2-034, only Part 2-034 is applicable.
---------------------- Page: 9 ----------------------
– 8 – IEC 61010-2-033:2019 © IEC 2019
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
1 Scope and object
This clause of Part 1 is applicable except as follows:
1.1.1 Equipment included in scope
Replace the existing text with the following:

This part of IEC 61010 specifies safety requirements for hand-held multimeters 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 61557-1 to IEC 61557-12, Electrical safety in low voltage distribution systems up to

1 000 V a.c. and 1 500 V d.c. – 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
Add the following two new paragraphs at the end of the subclause:

Requirements for protection against HAZARDS resulting from NORMAL USE and REASONABLY

FORESEEABLE MISUSE of measuring circuits are given in Clause 101.
Requirements for reliance on the displayed value are given in Clause 102.
2 Normative references
This clause of Part 1 is applicable except as follows:
Replace "IEC 61010-031" with the following new reference:

IEC 61010-031:2015, 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 61010-031:2015/AMD1:2018
---------------------- Page: 10 ----------------------
IEC 61010-2-033:2019 © IEC 2019 – 9 –

Replace "IEC 61180-1 (all parts)", "IEC 61180-1" and "IEC 61180-2", with the following new

reference:

IEC 61180, High-voltage test techniques for low-voltage equipment – Definitions, test and

procedure requirements, test equipment
Add the following new normative reference:

IEC 61010-2-032, 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
3 Terms and definitions
This clause of Part 1 is applicable 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

Note 1 to entry: MEASUREMENT CATEGORIES take into account OVERVOLTAGE CATEGORIES, short-circuit current

levels, the location in the building installation where the test or measurement is to be made, and some forms of

energy limitation or transient protection included in the building installation. See Annex AA for more information.

4 Tests
This clause of Part 1 is applicable, except as follows:
4.3.2.5 MAINS supply
Replace the existing title and the text with:
4.3.2.5 Power supply
The following requirements apply.

a) The MAINS supply voltage shall be between 90 % and 110 % of any RATED supply voltage

for which the equipment can be set or, if the equipment is RATED for a greater fluctuation,

at any supply voltage within the fluctuation range.
b) The MAINS frequency shall be any RATED frequency.

c) Equipment for both a.c. and d.c. shall be connected to an a.c. or d.c. supply.

d) Equipment powered by single-phase a.c. MAINS supply shall be connected both with

normal and reverse polarity.

e) If the means of connection permits reversal, battery-operated and d.c. equipment shall be

connected with both reverse and normal polarity.
---------------------- Page: 11 ----------------------
– 10 – IEC 61010-2-033:2019 © IEC 2019
4.3.2.6 Input and output voltages
Replace the first paragraph with the following:

Input and output voltages, including floating voltages but excluding the MAINS supply voltage,

shall be set to any voltage within the RATED voltage range, in normal and reverse polarity if

possible.
5 Marking and documentation
This clause of Part 1 is applicable except as follows:
5.1.2 Identification
Add the following note after the existing note:

NOTE 101 Some national regulations might 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 14 of Table 1.
Add the following new subclause:
TERMINALS
5.1.5.101 Measuring circuit

Measuring circuit TERMINALS shall be marked with the value of the RATED voltage to earth.

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.

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.
---------------------- Page: 12 ----------------------
IEC 61010-2-033:2019 © IEC 2019 – 11 –

TERMINALS of measuring circuits RATED for MAINS voltage measurements shall be additionally

marked "CAT lll" and/or "CAT IV" as applicable. Marking those TERMINALS with these two

types, and only these two types, of MEASUREMENT CATEGORY and its RATED voltage to earth, is

permissible. Marking MEASUREMENT CATEGORY II is not allowed.

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 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 permitte
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