IEC 61010-2-033:2012

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 61010-2-033:2012 specifies safety requirements for METERS. The METERS that have a primary purpose of measuring voltage on a live MAINS CIRCUIT are within the scope of this standard. They have various names, but all of them have capability for measurements of voltages on a live MAINS CIRCUIT. Some of the names given to this equipment are as follows:
- MULTIMETER;
- digital MULTIMETER;
- VOLTMETER;
- clamp METER (see also Part 2-032).
For the purpose of this standard, the term METER is used for these HAND-HELD measuring instruments.
This publication is to be read in conjunction with IEC 61010-1:2010.

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

La CEI 61010-2-033:2012 spécifie les exigences de sécurité pour les MESUREURS. Les MESUREURS qui ont pour objectif principal de mesurer la tension d'un CIRCUIT RESEAU sous tension sont dans le domaine d'application de cette norme. Ils ont des noms différents, mais tous ont la capacité de mesurer la tension d'un CIRCUIT RESEAU. Quelques-uns des noms donnés à ces appareils sont les suivants:
- MULTIMETRE;
- MULTIMETRE numérique;
- VOLTMETRE;
- pince MULTIMETRE (voir aussi la Partie 2-032).
Aux fins de la présente norme, le terme MESUREUR est utilisé pour ces appareils de mesure PORTATIFS.
Cette publication doit être lue conjointement avec la CEI 61010-1:2010.

General Information

• Status: Published
• Publication Date: 03-Apr-2012
• ICS: 19.080 - Electrical and electronic testing
• ICS: 71.040.10 - Chemical laboratories. Laboratory equipment
• Technical Committee: TC 66 - Safety of measuring, control and laboratory equipment
• Drafting Committee: WG 2 - TC 66/WG 2
• Current Stage: DELPUB - Deleted Publication
• Start Date: 30-Jun-2017
• Completion Date: 21-Jun-2019

Relations

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

Standards Content (Sample)

IEC 61010-2-033


®


Edition 1.0 2012-04



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

Règles de sécurité pour appareils électriques de mesurage, de régulation
et de laboratoire –
Partie 2-033: Exigences particulières pour les MULTIMÈTRES PORTATIFS et autres
MESUREURS, pour usage domestique et professionnel, capables de mesurer la
tension RÉSEAU


IEC 61010-2-033:2012

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---------------------- Page: 2 ----------------------
IEC 61010-2-033



®


Edition 1.0 2012-04







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



Règles de sécurité pour appareils électriques de mesurage, de régulation


et de laboratoire –

Partie 2-033: Exigences particulières pour les MULTIMÈTRES PORTATIFS et autres

MESUREURS, pour usage domestique et professionnel, capables de mesurer la

tension RÉSEAU










INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

V
CODE PRIX


ICS 19.080; 71.040.10 ISBN 978-2-8322-0076-6



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

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CONTENTS


FOREWORD . 3

INTRODUCTION . 5


1 Scope and object . 6

2 Normative references. 7

3 Terms and definitions . 7

4 Tests . 8

5 Marking and documentation . 9

6 Protection against electric shock. 11
7 Protection against mechanical hazards . 14
8 Resistance to mechanical stress . 14
9 Protection against the spread of fire . 14
10 Equipment temperature limits and resistance to heat . 14
11 Protection against HAZARDS from fluids . 14
12 Protection against radiation, including laser sources, and against sonic and
ultrasonic pressure . 14
13 Protection against liberated gases and substances, explosion and implosion . 14
14 Components and subassemblies . 14
15 Protection by interlocks . 15
16 HAZARDS resulting from application . 15
17 RISK assessment . 16
101 Measuring circuits . 16
Annexes . 20
Annex K (normative) Insulation requirements not covered by 6.7 . 20
Annex L (informative) Index of defined terms . 25
Annex AA (normative) Measurement categories . 26
Annex BB (informative) Hazards pertaining to measurements performed in certain
environments . 29
Bibliography . 31

Figure 4 – Acceptable combinations of protective means against electric shock . 12

Figure AA.1 – Example to identify the locations of measuring circuits . 27

Table 101 – CLEARANCES and CREEPAGE DISTANCES for measuring circuit TERMINALS
with HAZARDOUS LIVE conductive parts . 13
Table 102 – Impulse withstand voltages . 15
Table K.101 – CLEARANCES for measuring circuits of MEASUREMENT CATEGORIES III and IV . 21
Table K.102 – Test voltages for testing electric strength of solid insulation in
measuring circuits of MEASUREMENT CATEGORY III . 22
Table K.103 –Test voltages for testing electric strength of solid insulation in measuring
circuits of MEASUREMENT CATEGORY IV . 22
Table K.104 – Test voltages for testing long term stress of solid insulation in
measuring circuits . 22
Table AA.1 – Characteristics of MEASUREMENT CATEGORIES . 28

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61010-2-033  IEC:2012 – 3 –


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,
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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-
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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.
International Standard IEC 61010-2-33 has been prepared by IEC technical committee 66:
Safety of measuring, control and laboratory equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
66/461/FDIS 66/464/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

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– 4 – 61010-2-033  IEC:2012


This Part 2-033 is to be used in conjunction with third edition of IEC 61010-1 (2010), on the

basis of which It was established. Consideration may be given to future editions of, or

amendments to, IEC 61010-1.


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 and other METERS, 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 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 test: 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 numbered AA and BB.
This publication 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.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication 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.

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61010-2-033  IEC:2012 – 5 –


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 will be

supplemented or modified by the special requirements of one, or more than one, particular

part 2‘s of the standard which must be read in conjunction with the Part 1 requirements.


This Part 2-033 specifies the safety requirements for HAND HELD METERS that have a primary

purpose of measuring voltage on a live MAINS CIRCUIT.


Part 2-032 specifies the safety requirements that are generally applicable to HAND-HELD and

hand-manipulated current sensors.
Part 2-030 specifies the safety requirements for testing and measuring circuits which are
connected for test or measurement purposes to devices or circuits outside the measurement
equipment itself.
VOLTMETER and similar equipment that are not within the scope of Part 2-033 are considered
to be covered by the requirements of Part 2-030 or Part 2-032. But for equipment within the
scopes of both Part 2-032 and Part 2-033, the two standards must be read in conjunction.

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– 6 – 61010-2-033  IEC:2012


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
This clause of Part 1 is applicable except as follows:
1.1.1 Equipment included in scope
Replacement:
Replace the existing text with the following:
This part of IEC 61010 specifies safety requirements for METERS.
The METERS that have a primary purpose of measuring voltage on a live MAINS CIRCUIT are
within the scope of this standard. They have various names, but all of them have capability for
measurements of voltages on a live MAINS CIRCUIT. Some of the names given to this
equipment are as follows:
– MULTIMETER;
– digital MULTIMETER;
– VOLTMETER;
– clamp METER (see also Part 2-032).
For the purpose of this standard, the term METER is used for these HAND-HELD measuring
instruments.
NOTE Parts of the equipment that are not within the scope of this Part 2-033 are considered to be covered by the
requirements of Part 1 or other part 2's of IEC 61010 and then will also need to meet the requirements of these
other parts.
1.1.2 Equipment excluded from scope

Addition:
Add the following new item to the list:
aa) IEC 61557 (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 –
Parts 1 through 12).
Addition:
Add the two following paragraphs at the end of the subclause:
Equipment that is not capable of measuring MAINS voltages is not within the scope of this
Part 2-033. See IEC 61010-2-030 for requirements pertaining to such equipment.

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61010-2-033  IEC:2012 – 7 –


Such equipment, including other HAND-HELD equipment such as oscilloscopes, wattmeters,

process control MULTIMETERS, and communications test sets is not within the scope of this

Part 2-033.


1.2.1 Aspects included in scope


Addition:


Add the following paragraph at the end of the subclause:


Requirements for protection against HAZARDS resulting from NORMAL USE and REASONABLY

of measuring circuits are given in Clause 101.
FORESEEABLE MISUSE
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.1 Equipment and states of equipment
Addition:
Add the following new definitions:
3.1.101
MULTIMETER
multirange multifunction measuring instrument intended to measure voltage and sometimes
other electrical quantities such as current and resistance
[SOURCE: IEC 60050-300:2001, 312-02-24, modified]
3.1.102
VOLTMETER
instrument intended to measure the value of a voltage
[SOURCE: IEC 60050-300:2001, 313-01-03]

3.1.103
METER
voltage measuring instrument which is either a HAND-HELD VOLTMETER or a HAND-HELD
MULTIMETER
3.1.104
HAND-HELD (equipment)
intended to be supported by one hand during NORMAL USE
3.5 Safety terms
Replacement:
Replace definitions 3.5.4 and 3.5.5 with the following new definitions:

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– 8 – 61010-2-033  IEC:2012


3.5.4

MAINS

low voltage electricity supply system to which the METER concerned is designed to be

connected for the purposes of measurements


3.5.5

MAINS CIRCUIT

circuit which is intended to be directly connected to the MAINS for measurements


Addition:


Add the following new definition:
3.5.101
MEASUREMENT CATEGORY
classification of testing and measuring circuits according to the type of MAINS CIRCUITS to
which they are intended to be connected
NOTE MEASUREMENT CATEGORIES take into account OVERVOLTAGE CATEGORIES, short-circuit current levels, the
location in the building installation at which 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:
4.4.2 Application of fault conditions
4.4.2.1 General
Replacement:
Replace the first sentence with the following text:
Fault conditions shall include those specified in 4.4.2.2 to 4.4.2.14 and in 4.4.2.101.
Addition:
Add the following new subclause:

4.4.2.101 Input voltages
For measuring circuit TERMINALS RATED for MAINS CIRCUITS voltage measurements:
a) up to 600 V a.c. r.m.s., the voltage applied to the TERMINALS is the RATED voltage
multiplied by 1,90 but not to exceed 920 V a.c. r.m.s.;
b) above 600 V a.c. r.m.s. and up to 1 000 V a.c. r.m.s., the voltage applied to the TERMINALS
is 1 100 V a.c. r.m.s.;
c) above 1 000 V a.c. r.m.s., the voltage applied to the TERMINALS is the RATED voltage
multiplied by 1,1;
d) of d.c. voltage, the d.c. voltage applied to the TERMINALS is the RATED voltage multiplied by
1,1.
These voltages are applied with the METER set to each voltage measurement range capable of
MAINS voltage measurements.

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61010-2-033  IEC:2012 – 9 –


NOTE The 1,9 multiplication factor is derived from phase-to-phase voltage measurements with a 10 %

overvoltage condition.


5 Marking and documentation


This clause of Part 1 is applicable except as follows:



5.1.2 Identification


Addition:

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
Replacement:
Replace the first paragraph with the following:
TERMINALS, connectors,
If necessary for safety, an indication shall be given of the purpose of
controls, and indicators. Where there is insufficient space, symbol 14 from Table 1 may be
used.
5.1.5.2 TERMINALS
Replacement:
Replace existing item d) with the following item d):
TERMINALS supplied from the interior of the equipment or from other TERMINALS and which
d)
could be HAZARDOUS LIVE, with the voltage, current, charge or energy value or range, or
with symbol 12 of Table 1.
Addition:

Add the following new subclause:
5.1.5.101 Measuring circuit TERMINALS
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
RATED voltage or the RATED current as applicable to the pair or
marked with the value of the
set of TERMINALS.
NOTE 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 equipment, the measurement RATED voltage (between TERMINALS) is different from the RATED
voltage to earth.
Measuring circuit TERMINALS RATED for MAINS CIRCUITS voltage measurements shall be
additionally marked “CAT lll” or “CAT IV” as applicable.

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– 10 – 61010-2-033  IEC:2012


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 for identifying these

TERMINALS.


TERMINALS markings shall be visible when the equipment 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
Replacement:
Replace the existing text with the following text:
Warning markings specified in 5.1.5.2 d), 6.1.2 b), 6.6.2, 7.3.2 b) 3), 7.4, 10.1, and 13.2.2
shall meet the following requirements.
Warning markings shall be visible when the equipment is ready for NORMAL USE. If a warning
applies to a particular part of the equipment, the marking shall be placed on or near the 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 equipment, the equipment shall be marked with
symbol 14 of Table 1. Symbol 14 is not required to be used 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 equipment must be isolated or disconnected from the HAZARDOUS LIVE voltage
before access.

NOTE National regulations may require safety markings in a nationally accepted language.
Conformity is checked by inspection.
5.4.1 General
Replacement:
Replace the first paragraph 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 equipment, in an accepted language of the
country where the product is intended to be placed on the market. Safety documentation for
service personnel authorized by the manufacturer shall be made available to those personnel,
in a language selected by the manufacturer.

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61010-2-033  IEC:2012 – 11 –


Addition:


Add the two new following items to 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 and shall have a voltage RATING of at least the voltage of the

circuit to be measured;


bb) information about each relevant MEASUREMENT CATEGORY (see 5.1.5.101). If the METER

has multiple MEASUREMENT CATEGORY RATINGS for the same measuring circuit, the

documentation shall clearly identify the MEASUREMENT CATEGORIES where the equipment
may be used and where it must not be used.
6 Protection against electric shock
This clause of Part 1 is applicable except as follows:
6.5.1 General
Replacement of the text, conformity statement, and Figure 4 with the following text, conformity
statement and Figure 4:
ACCESSIBLE parts shall be prevented from becoming HAZARDOUS LIVE in SINGLE FAULT
CONDITION. The primary means of protection (see 6.4) shall be supplemented by one of a) or
b). Alternatively, one of the single means of protection c) or d) shall be used. See Figure 4
and Annex
...