SIST EN 61010-031:2015

SLOVENSKI STANDARD
01-oktober-2015
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SIST EN 61010-031:2003
SIST EN 61010-031:2003/A1:2008
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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 61010-031:2015)
Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil
031: Sicherheitsbestimmungen für handgehaltenes Messzubehör zum Messen und
Prüfen (IEC 61010-031:2015)
Règles de sécurité pour appareils électriques de mesurage, de régulation et de
laboratoire - Partie 031: Exigences de sécurité pour sondes équipées tenues à la main
pour mesurage et essais électriques (IEC 61010-031:2015)
Ta slovenski standard je istoveten z: EN 61010-031:2015
ICS:
19.080 (OHNWULþQRLQHOHNWURQVNR Electrical and electronic
SUHVNXãDQMH testing
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61010-031

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2015
ICS 19.080 Supersedes EN 61010-031:2002
English Version
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 61010-031:2015)
Règles de sécurité pour appareils électriques de mesurage, Sicherheitsbestimmungen für elektrische Mess-, Steuer-,
de régulation et de laboratoire - Partie 031: Exigences de Regel- und Laborgeräte - Teil 031:
sécurité pour sondes équipées tenues à la main pour Sicherheitsbestimmungen für handgehaltenes
mesurage et essais électriques Messzubehör zum Messen und Prüfen
(IEC 61010-031:2015) (IEC 61010-031:2015)
This European Standard was approved by CENELEC on 2015-07-03. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61010-031:2015 E
European foreword
The text of document 66/569/FDIS, future edition 2 of IEC 61010-031, prepared by IEC/TC 66 "Safety
of measuring, control and laboratory equipment" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN 61010-031:2015.

The following dates are fixed:
(dop) 2016-04-03
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2018-07-03
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61010-031:2002.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment
Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).

Endorsement notice
The text of the International Standard IEC 61010-031:2015 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60065 NOTE Harmonized as EN 60065.
IEC 60270 NOTE Harmonized as EN 60270.
IEC 60364-4-44 NOTE Harmonized as HD 60634-4-44.
IEC 60664-1 NOTE Harmonized as EN 60664-1.
IEC 60664-3:2003 NOTE Harmonized as EN 60664-3:2003.
IEC 60664-3:2003/AMD1:2010 NOTE Harmonized as EN 60664-3:2003/A1:2010.
IEC 60664-4:2005 NOTE Harmonized as EN 60664-4:2006.
IEC 60990 NOTE Harmonized as EN 60990.
IEC 61010 (series) NOTE Harmonized as EN 61010 (series).
IEC 61032:1997 NOTE Harmonized as EN 61032:1998.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year

IEC 60027 series Letter symbols to be used in electrical EN 60027 series
technology
IEC 60529 -  Degrees of protection provided by - -
enclosures (IP Code)
IEC 61010-1 2010 Safety requirements for electrical EN 61010-1 2010
equipment for measurement, control and
laboratory use -- Part 1: General
requirements
IEC 61180-1 1992 High-voltage test techniques for low- EN 61180-1 1994
voltage equipment -- Part 1: Definitions,
test and procedure requirements
IEC 61180-2 -  High-voltage test techniques for low- EN 61180-2 -
voltage equipment -- Part 2: Test
equipment
IEC Guide 104 -  The preparation of safety publications and - -
the use of basic safety publications and
group safety publications
ISO/IEC Guide 51 -  Safety aspects - Guidelines for their - -
inclusion in standards
IEC 61010-031 ®
Edition 2.0 2015-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

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

laboratoire –
Partie 031: Exigences de sécurité pour sondes équipées tenues à la main pour

mesurage et essais électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.080 ISBN 978-2-8322-2701-5

– 2 – IEC 61010-031:2015 © IEC 2015
CONTENTS
FOREWORD . 7
1 Scope and object . 10
1.1 Scope . 10
1.1.1 Probe assemblies included in scope . 10
1.1.2 Probe assemblies excluded from scope . 13
1.2 Object . 13
1.2.1 Aspects included in scope . 13
1.2.2 Aspects excluded from scope . 13
1.3 Verification. 13
1.4 Environmental conditions . 13
1.4.1 Normal environmental conditions . 13
1.4.2 Extended environmental conditions . 13
2 Normative references . 14
3 Terms and definitions . 14
3.1 Parts and accessories . 14
3.2 Quantities . 15
3.3 Tests . 16
3.4 Safety terms . 16
3.5 Insulation . 17
4 Tests . 18
4.1 General . 18
4.2 Sequence of tests . 19
4.3 Reference test conditions. 19
4.3.1 Environmental conditions . 19
4.3.2 State of probe assemblies . 19
4.3.3 Position of the probe assembly . 19
4.3.4 Accessories . 20
4.3.5 Covers and removable parts . 20
4.3.6 Input and output voltages . 20
4.3.7 Controls . 20
4.3.8 Connections . 20
4.3.9 Duty cycle . 20
4.4 Testing in SINGLE FAULT CONDITION. 20
4.4.1 General . 20
4.4.2 Application of fault conditions . 20
4.4.3 Duration of tests . 21
4.4.4 Conformity after application of fault conditions . 21
4.5 Tests in REASONABLY FORESEEABLE MISUSE . 22
4.5.1 General . 22
4.5.2 Fuses . 22
5 Marking and documentation . 22
5.1 Marking . 22
5.1.1 General . 22
5.1.2 Identification . 22
5.1.3 Fuses . 23
5.1.4 CONNECTORS and operating devices . 24

IEC 61010-031:2015 © IEC 2015 – 3 –
5.1.5 RATING . 24
5.2 Warning markings . 24
5.3 Durability of markings . 24
5.4 Documentation . 25
5.4.1 General . 25
5.4.2 Probe assembly RATING . 25
5.4.3 Probe assembly operation . 25
5.4.4 Probe assembly maintenance and service . 26
6 Protection against electric shock . 26
6.1 General . 26
6.2 Determination of ACCESSIBLE parts . 27
6.2.1 General . 27
6.2.2 Examination . 27
6.2.3 Openings for pre-set controls . 28
6.3 Limit values for ACCESSIBLE parts . 28
6.3.1 General . 28
6.3.2 Levels in NORMAL CONDITION . 29
6.3.3 Levels in SINGLE FAULT CONDITION . 29
6.3.4 Measurement of voltage and touch current . 31
6.4 Means of protection against electric shock . 34
6.4.1 General . 34
6.4.2 CONNECTORS . 35
6.4.3 PROBE TIPS. 36
6.4.4 Impedance . 38
6.4.5 PROTECTIVE IMPEDANCE . 38
6.4.6 BASIC INSULATION, SUPPLEMENTARY INSULATION, DOUBLE INSULATION and
REINFORCED INSULATION . 39
6.5 Insulation requirements . 39
6.5.1 The nature of insulation . 39
6.5.2 Insulation requirements for probe assemblies . 44
6.6 Procedure for voltage tests . 50
6.6.1 General . 50
6.6.2 Humidity preconditioning . 50
6.6.3 Conduct of tests . 50
6.6.4 Test voltages . 51
6.6.5 Test procedures . 53
6.7 Constructional requirements for protection against electric shock . 54
6.7.1 General . 54
6.7.2 Insulating materials . 54
6.7.3 ENCLOSURES of probe assemblies with DOUBLE INSULATION or REINFORCED
INSULATION . 54
6.7.4 PROBE WIRE attachment . 54
7 Protection against mechanical HAZARDS . 58
8 Resistance to mechanical stresses . 58
8.1 General . 58
8.2 Rigidity test . 59
8.3 Drop test . 59
8.4 Impact swing test . 59
9 Temperature limits and protection against the spread of fire . 60

– 4 – IEC 61010-031:2015 © IEC 2015
9.1 General . 60
9.2 Temperature tests . 61
10 Resistance to heat . 61
10.1 Integrity of SPACINGS . 61
10.2 Resistance to heat . 61
11 Protection against HAZARDS from fluids . 61
11.1 General . 61
11.2 Cleaning . 61
11.3 Specially protected probe assemblies . 62
12 Components . 62
12.1 General . 62
12.2 Fuses. 62
12.3 PROBE WIRE . 63
12.3.1 General . 63
12.3.2 RATING of PROBE WIRE . 63
12.3.3 Pressure test at high temperature for insulations . 63
12.3.4 Tests for resistance of insulation to cracking . 65
12.3.5 Voltage test . 65
12.3.6 Tensile test . 66
13 Prevention of HAZARD from arc flash and short-circuits . 68
13.1 General . 68
13.2 Exposed conductive parts . 68
Annex A (normative) Measuring circuits for touch current (see 6.3) . 69
A.1 Measuring circuits for a.c. with frequencies up to 1 MHz and for d.c. . 69
A.2 Measuring circuits for a.c. with sinusoidal frequencies up to 100 Hz and for
d.c. . 69
A.3 Current measuring circuit for electrical burns at frequencies above 100 kHz . 70
A.4 Current measuring circuit for WET LOCATIONS . 71
Annex B (normative) Standard test fingers . 73
Annex C (normative) Measurement of CLEARANCES and CREEPAGE DISTANCES . 76
Annex D (normative) Routine spark tests on PROBE WIRE . 78
D.1 General . 78
D.2 Spark test procedure . 78
D.3 Routine spark test method for PROBE WIRE . 80
Annex E (informative)  4 mm CONNECTORS . 82
E.1 General . 82
E.2 Dimensions . 82
Annex F (normative) MEASUREMENT CATEGORIES . 84
F.1 General . 84
F.2 MEASUREMENT CATEGORIES . 84
F.2.1 MEASUREMENT CATEGORY II . 84
F.2.2 MEASUREMENT CATEGORY III . 84
F.2.3 MEASUREMENT CATEGORY IV . 84
F.2.4 Probe assemblies without a MEASUREMENT CATEGORY RATING. 85
Annex G Index of defined terms . 86
Bibliography . 87

IEC 61010-031:2015 © IEC 2015 – 5 –
Figure 1 – Examples of type A probe assemblies . 11
Figure 2 – Examples of type B probe assemblies . 11
Figure 3 – Examples of type C probe assemblies . 12
Figure 4 – Examples of type D probe assemblies . 12
Figure 5 – Example of a STACKABLE CONNECTOR with a male CONNECTOR and a female
TERMINAL . 15
Figure 6 – Methods for determination of ACCESSIBLE parts (see 6.2) and for voltage
tests of (see 6.4.2) . 28
Figure 7 – Capacitance level versus voltage in NORMAL CONDITION and SINGLE-FAULT
CONDITION (see 6.3.2 c) and 6.3.3 c)) . 30
Figure 8 – Voltage and touch current measurement . 31
Figure 9 – Voltage and touch current measurement for the reference CONNECTOR . 32
Figure 10 – Voltage and touch current measurement with shielded test probe . 33
Figure 11 – Maximum test probe input voltage for 70 mA touch current. 34
Figure 12 – Protection by a PROTECTIVE FINGERGUARD . 37
Figure 13 – Protection by distance . 37
Figure 14 – Protection by tactile indicator . 38
Figure 15 – Distance between conductors on an interface between two layers . 42
Figure 16 – Distance between adjacent conductors along an interface of two layers . 42
Figure 17 – Distance between adjacent conductors located between the same two
layers. 44
Figure 18 – Example of recurring peak voltage . 47
Figure 19 – Flexing test . 56
Figure 20 – Rotational flexing test . 58
Figure 21 – Impact swing test . 60
Figure 22 – Indentation device . 64
Figure A.1 – Measuring circuit for a.c. with frequencies up to 1 MHz and for d.c. . 69
Figure A.2 – Measuring circuits for a.c. with sinusoidal frequencies up to 100 Hz and
for d.c. . 70
Figure A.3 – Current measuring circuit for electrical burns . 71
Figure A.4 – Current measuring circuit for high frequency test probes . 71
Figure A.5 – Current measuring circuit for WET LOCATIONS . 72
Figure B.1 – Rigid test finger . 73
Figure B.2 – Jointed test finger . 74
Figure D.1 – Bead Chain Configuration (if applicable) . 79
Figure E.1 – Recommended dimensions of 4 mm CONNECTORS . 82
Figure F.1 – Example to identify the locations of MEASUREMENT CATEGORIES. 85

Table 1 – Symbols . 23
Table 2 – SPACINGS for unmated CONNECTORS RATED up to 1 000 V a.c. or 1 500 V d.c.
with HAZARDOUS LIVE conductive parts . 36
Table 3 – Multiplication factors for CLEARANCES of probe assembly RATED for operation
at altitudes up to 5 000 m . 40
Table 4 – Test voltages for testing solid insulation . 41
Table 5 – Minimum values for distance or thickness . 43

– 6 – IEC 61010-031:2015 © IEC 2015
Table 6 – CLEARANCES for probe assemblies of MEASUREMENT CATEGORIES II, III and IV . 44
Table 7 – CLEARANCE values for the calculation of 6.5.2.3.2 . 46
Table 8 – CLEARANCES for BASIC INSULATION in probe assemblies subjected to recurring
peak voltages or WORKING VOLTAGES with frequencies above 30 kHz . 48
Table 9 – CREEPAGE DISTANCES for BASIC INSULATION or SUPPLEMENTARY INSULATION . 49
Table 10 – Test voltages based on CLEARANCES . 52
Table 11 – Correction factors according to test site altitude for test voltages for
CLEARANCES . 53
Table 12 – Pull forces for PROBE WIRE attachment tests . 57
Table 13 – Diameter of mandrel and numbers of turns . 65
Table C.1 – Dimension of X . 76
Table D.1 – Maximum centre-to-centre spacings of bead chains . 78
Table D.2 – Formula for maximum speed of wire in terms of electrode length L of link-
or bead-chain electrode . 80
Table F.1 – Characteristics of MEASUREMENT CATEGORIES . 85

IEC 61010-031:2015 © IEC 2015 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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

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.
International Standard IEC 61010-031 has been prepared by IEC technical committee 66:
Safety of measuring, control and laboratory equipment.
It has the status of a group safety publication in accordance with IEC GUIDE 104.
IEC 61010-031 is a stand-alone standard. This second edition cancels and replaces the first
edition published in 2002 and Amendment 1:2008. This edition constitutes a technical
revision.
This edition includes the following significant changes from the first edition, as well as
numerous other changes:
a) Voltages above the levels of 30 V r.m.s., 42,4 V peak, or 60 V d.c. are deemed to be
HAZARDOUS LIVE instead of 33 V r.m.s., 46,7 V peak, or 70 V d.c.

– 8 – IEC 61010-031:2015 © IEC 2015
b) Servicing is now included within the scope.
c) Extended environmental conditions are included within the scope.
d) New terms have been defined.
e) Tests for REASONABLY FORESEEABLE MISUSE have been added, in particular for fuses.
f) Additional instruction requirements for probe assembly operation have been specified.
g) Limit values for ACCESSIBLE parts and for measurement of voltage and touch current have
been modified.
h) SPACINGS requirements for mating of CONNECTORS have been modified.
i) PROBE TIPS and SPRING-LOADED CLIPS requirements have been modified. The PROTECTIVE
FINGERGUARD replace the BARRIER with new requirements.
j) Insulation requirements (6.5) and test procedures (6.6.5) have been rewritten and aligned
when relevant with Part 1. Specific requirements have been added for solid insulation and
thin-film insulation.
k) The terminology for MEASUREMENT CATEGORY I has been replaced with the designation “not
RATED for measurements within MEASUREMENT CATEGORIES II, III, or IV”.
l) The flexing/pull test (6.7.4.3) has been partially rewritten.
m) Surface temperature limits (Clause 10) have been modified to conform to the limits of IEC
Guide 117.
n) Requirements for resistance of PROBE WIRES to mechanical stresses have been added in
Clause 12 and a new Annex D.
o) Requirements have been added regarding the prevention of HAZARD from arc flash and
short-circuits for SPRING-LOADED CLIPS.
p) A new informative Annex E defines the dimension of the 4 mm banana CONNECTORS.
The text of this standard is based on the following documents:
FDIS Report on voting
66/569/FDIS 66/571/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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, may be found on the IEC
website.
In this standard, the following print types are used:
– requirements and definitions: in roman type;
– NOTES and EXAMPLES: in smaller roman type;
– conformity and tests: in italic type;
– terms used throughout this standard which have been defined in Clause 3: SMALL ROMAN
CAPITALS.
IEC 61010-031:2015 © IEC 2015 – 9 –
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.
– 10 – IEC 61010-031:2015 © IEC 2015
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

1 Scope and object
1.1 Scope
1.1.1 Probe assemblies included in scope
This part of IEC 61010 specifies safety requirements for hand-held and hand-manipulated
probe assemblies of the types described below, and their related accessories. These probe
assemblies are for 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.
a) Type A: low-voltage and high-voltage, non-attenuating probe assemblies. Non-attenuating
probe assemblies that are RATED for direct connection to voltages exceeding 30 V r.m.s.,
42,4 V peak, or 60 V d.c., but not exceeding 63 kV. They do not incorporate components
which are intended to provide a voltage divider function or a signal conditioning function,
but they may contain non-attenuating components such as fuses (see Figure 1.)
b) Type B: high-voltage attenuating or divider probe assemblies. Attenuating or divider probe
assemblies that are RATED for direct connection to secondary voltages exceeding
1 kV r.m.s. or 1,5 kV d.c. but not exceeding 63 kV r.m.s. or d.c. The divider function may
be carried out wholly within the probe assembly, or partly within the test or measurement
equipment to be used with the probe assembly (see Figure 2).
c) Type C: low-voltage attenuating or divider probe assemblies. Attenuating or divider probe
assemblies for direct connection to voltages not exceeding 1 kV r.m.s. or 1,5 kV d.c. The
signal conditioning function may be carried out wholly within the probe assembly, or partly
within the test or measurement equipment intended to be used with the probe assembly
(see Figure 3).
d) Type D: low-voltage attenuating, non-attenuating or other signal conditioning probe
assemblies, that are RATED for direct connection only to voltages not exceeding
30 V r.m.s., or 42,4 V peak, or 60 V d.c., and are suitable for currents exceeding 8 A (see
Figure 4).
IEC 61010-031:2015 © IEC 2015 – 11 –
IEC
Key
1 typical CONNECTORS 4 to equipment
2 PROBE TIP 5 SPRING-LOADED CLIP
3 probe body 6 PROBE WIRE
Figure 1 – Examples of type A probe assemblies
4 5
IEC
Key
1 PROBE TIP 4 PROTECTIVE FINGERGUARD
2 to equipment 5 hand-held area of probe body
3 reference CONNECTOR 6 PROBE WIRE
Figure 2 – Examples of type B probe assemblies

– 12 – IEC 61010-031:2015 © IEC 2015
IEC
Key
1 PROBE TIP 5 PROBE WIRE
2 probe body 6 examples of accessories
3 reference CONNECTOR 7 BNC CONNECTOR
4 to equipment
Figure 3 – Examples of type C probe assemblies
IEC
Key
1 CONNECTOR 3 hand-held area of SPRING-LOADED CLIP or clamp
2 PROBE TIP 4 PROBE WIRE
Figure 4 – Examples of type D probe assemblies

IEC 61010-031:2015 © IEC 2015 – 13 –
1.1.2 Probe assemblies excluded from scope
This standard does not apply to current sensors within the scope of IEC 61010-2-032 (Hand-
held and hand-manipulated current sensors), but may apply to their input measuring circuit
leads and accessories.
1.2 Object
1.2.1 Aspects included in scope
The purpose of the requirements of this standard is to ensure that HAZARDS to the OPERATOR
and the surrounding area are reduced to a tolerable level.
Requirements for protection against particular types of HAZARDS are given in Clauses 6 to 13,
as follows:
a) electric shock or burn (see Clauses 6, 10 and 11);
b) mechanical HAZARDS (see Clauses 7, 8 and 11);
c) excessive temperature (see Clause 9);
d) spread of fire from the probe assembly (see Clause 9);
e) arc flash (see Clause 13).
Additional requirements for probe assemblies which are designed to be powered from a low-
voltage mains supply, or include other features not specifically addressed in this standard are
in other parts of IEC 61010.
NOTE Attention is drawn to the possible existence of additional requirements regarding the health and safety of
labour forces.
1.2.2 Aspects excluded from scope
This standard does not cover:
a) reliable function, performance, or other properties of the probe assembly;
b) effective
...