IEC 61010-2-030:2023

IEC 61010-2-030 ®
Edition 3.0 2023-09
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 2-030: Particular requirements for equipment having testing or measuring
circuits
Exigences de sécurité pour appareils électriques de mesurage, de régulation et
de laboratoire –
Partie 2-030: Exigences particulières pour les appareils équipés de circuits
d'essai ou de mesure
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IEC 61010-2-030 ®
Edition 3.0 2023-09
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 2-030: Particular requirements for equipment having testing or measuring

circuits
Exigences de sécurité pour appareils électriques de mesurage, de régulation et

de laboratoire –
Partie 2-030: Exigences particulières pour les appareils équipés de circuits

d'essai ou de mesure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.080, 71.040.10 ISBN 978-2-8322-7408-8

– 2 – IEC 61010-2-030:2023 © 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 . 40
Annex AA (normative) MEASUREMENT CATEGORIES . 41
Annex BB (informative) HAZARDS pertaining to measurements performed in certain
environments . 44
Annex CC (informative) 4 mm "banana" TERMINALS . 47
Annex DD (informative) Flowchart for insulation according to the type of circuit . 49
Annex EE (informative) Determination of CLEARANCES for Table 101 . 52
Bibliography . 53

Figure 101 – Duration of current flow versus body current for a.c. and d.c. currents. 14
Figure K.101 – Test circuit for evaluation of TRANSIENT OVERVOLTAGE attenuation . 33
Figure AA.1 – Example to identify the locations of MEASUREMENT CATEGORIES . 42
Figure CC.1 – Recommended dimensions of 4 mm TERMINALS . 48
Figure DD.1 – Requirements for CLEARANCE, CREEPAGE DISTANCE and solid insulation . 51

Table 101 – CLEARANCES for unmated measuring circuit TERMINALS. 15
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 – Impulse voltages for circuits connected to MAINS . 33

Table K.102 – CLEARANCES for measuring circuits RATED for MEASUREMENT CATEGORIES . 35
Table K.103 – Impulse test voltages for testing electric strength of solid insulation for
measuring circuits RATED for MEASUREMENT CATEGORIES . 36
Table K.104 – a.c. test voltages for testing electric strength of solid insulation for
measuring circuits RATED for MEASUREMENT CATEGORIES . 36
Table K.105 – Minimum values for distance or thickness of solid insulation for
measuring circuits RATED for MEASUREMENT CATEGORIES . 38
Table AA.1 – Characteristics of MEASUREMENT CATEGORIES . 43
Table EE.1 – CLEARANCE values for Table 101 . 52

– 4 – IEC 61010-2-030:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –

Part 2-030: Particular requirements for equipment
having testing or measuring circuits

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 61010-2-030 has been prepared by IEC technical committee 66: Safety of measuring,
control and laboratory equipment. It is an International Standard.
It has the status of a group safety publication in accordance with IEC Guide 104.
This third edition cancels and replaces the second edition published in 2017. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) in 1.2.1, requirements for protection against HAZARDS which could occur from reading a
voltage have been added to the scope;

b) Clause 2, all normative references have been dated and new normative references have
been added;
c) in 4.3.2.5, requirements for power supply have been modified;
d) in 4.3.2.6, requirements for inputs/outputs have been modified;
e) in 4.4.2.101, a new subclause about surge protective devices has been added;
f) in 5.1.5.101.2, minimum RATINGS for voltage of measuring TERMINALS are required;
g) 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;
CLEARANCES and CREEPAGE DISTANCES up to 3 000 V for measuring circuit
2) In 6.6.101.2,
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;
h) Subclause 9.101 to consider the protection of measuring circuits against the spread of fire
and arc flash has been added and Table 102 has been replaced by Table K.101;
i) in 9.101.2, relocation of 101.3 of previous edition;
j) in 9.101.3, relocation of 101.4 of previous edition, extension to MEASUREMENT CATEGORY II
and reference to IEC 61000-4-5 for tests;
k) in 14.101, relocation of 14.102 and 14.101 of previous edition has been removed;
l) in 101.3, relocation of 101.5 of previous edition, and more requirements added against
HAZARD occurring from reading a voltage value;
m) in K.2.1, another method for determination of CLEARANCES of secondary circuits is proposed;
CLEARANCE calculation;
n) in K.3.2, new Table K.15 and Table K.16 for
o) in K.101.4.1, new Table K.103 and Table K.104 replace Table K.102, Table K.103 and
Table K.104;
p) in K.101.4, the subclause has been reviewed; Tables and tests for solid insulation have
been modified; Table K.105 replaces Table K.9;
q) Table K.101, replacement of Table K.106;
r) Clause K.4, redraft of the clause to propose a method for determination of U for circuits
t
which reduce TRANSIENT OVERVOLTAGES;
s) Annex AA: Figure AA.1 has been redesigned;
t) Annex EE: addition of a new informative annex for determination of CLEARANCES for
Table 101.
The text of this International Standard is based on the following documents:
Draft Report on voting
66/786/FDIS 66/796/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.

– 6 – IEC 61010-2-030:2023 © IEC 2023
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 equipment having
testing or measuring circuits.
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:
• 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;
• 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) This document 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 this document have been included in IEC 61010-2-032:2023.
Equipment within the scopes of both this document 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, this document and IEC 61010-2-032:2023 are read in
conjunction.
3) IEC 61010-2-033:2023 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 this document have been included in IEC 61010-2-033:2023.
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 this document 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 this document, IEC 61010-2-032, IEC 61010-2-033 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 61010-2-030:2023 © IEC 2023
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –

Part 2-030: Particular requirements for equipment
having testing or measuring circuits

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 equipment having testing or measuring circuits
which are connected for test or measurement purposes to devices or circuits outside the
measurement equipment itself.
These include measuring circuits which are part of electrical test and measurement equipment,
laboratory equipment, or process control equipment. These circuits in equipment have
additional protective means between the circuit and an OPERATOR.
NOTE These testing and measuring circuits can, for example:
– measure voltages in circuits of other equipment,
– measure temperature of a separate device via a thermocouple,
– measure force on a separate device via a strain gauge,
– inject a voltage or current onto a circuit to analyse or test a new design.
This group safety publication focusing on safety essential requirements is primarily intended to
be used as a product safety standard for the products mentioned in the scope, but is also
intended to be used by technical committees in the preparation of publications for products
similar to those mentioned in the scope of this document, in accordance with the principles laid
down in IEC Guide 104 and lSO/lEC Guide 51.
One of the responsibilities of a technical committee is, wherever applicable, to make use of
basic safety publications and/or group safety publications in the preparation of its publications.
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 equipment (see Clause 9);
Replace the third paragraph with the following two new paragraphs:
Requirements for protection against HAZARDS arising from NORMAL USE, REASONABLY
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 61000-4-5:2014:2017, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-5:2014/AMD1:2017
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 61010-2-030:2023 © 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 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 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. equipment 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:
5.1.5 TERMINALS, connections and operating devices
Add the following new subclause:
5.1.5.101 Measuring circuit TERMINALS
5.1.5.101.1 General
Some measuring circuit TERMINALS for the equipment within the scope of this document also
serve as output TERMINALS.
Except as permitted in 5.1.5.101.4:
a) the value of the nominal a.c. r.m.s. line-to-neutral or d.c. voltage of MAINS being measured
shall be marked for measuring circuit TERMINALS RATED for MEASUREMENT CATEGORIES, or the
value of the RATED voltage to earth for other measuring circuit TERMINALS, and
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 Annex I).
b) the value of the RATED voltage or the RATED current, as applicable, of each pair or set of
measuring circuit TERMINALS that are intended to be used together shall be marked, and
c) the pertinent MEASUREMENT CATEGORY for each individual, pair, or set of measuring circuit
TERMINALS, or symbol 14 of Table 1 shall be marked as specified in 5.1.5.101.2 and
5.1.5.101.3, if applicable.
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 may have a RATED voltage to earth. For some equipment, the RATED voltage between
TERMINALS may be different from the RATED voltage to earth. Markings shall be clear to avoid
misunderstanding.
Symbol 14 of Table 1 shall be marked if current measuring TERMINALS are not intended for
connection to current transformers without internal protection (see 101.2).
Markings shall be placed adjacent to the TERMINALS. However, if there is insufficient space (as
in multi-input equipment), the marking may be on the RATING plate or scale plate, or the
TERMINAL may be marked with symbol 14 of Table 1.
For any set of measuring circuit TERMINALS, symbol 14 of Table 1 does not need to be marked
more than once, if it is close to the TERMINALS.
Conformity is checked by inspection and, if applicable, as specified in 5.1.5.101.2 and
5.1.5.101.3, taking the exceptions in 5.1.5.101.4 into account.

– 12 – IEC 61010-2-030:2023 © IEC 2023
5.1.5.101.2 Measuring circuit TERMINALS RATED for MEASUREMENT CATEGORIES
The relevant MEASUREMENT CATEGORY shall be marked for TERMINALS of measuring circuits
RATED for MEASUREMENT CATEGORIES. The MEASUREMENT CATEGORY markings shall be "CAT II",
"CAT III" or "CAT IV" as applicable.
The RATED voltage of the TERMINALS of a measuring circuit intended for MAINS voltage
measurements shall be equal to or higher than their RATED a.c. r.m.s. line-to-neutral or d.c.
voltage.
Marking those TERMINALS with more than one type of MEASUREMENT CATEGORY and its RATED
voltage is permissible.
Conformity is checked by inspection.
5.1.5.101.3 Measuring circuit TERMINALS RATED for connection to voltages above the
levels of 6.3.1
Symbol 14 of Table 1 shall be marked adjacent to the TERMINALS for measuring circuit TERMINALS
RATED for connection to voltages above the levels of 6.3.1, but that are not RATED for
MEASUREMENT CATEGORIES (see also 5.4.1 bb) ).
Conformity is checked by inspection.
5.1.5.101.4 Measuring circuit TERMINALS which are permanently connected, dedicated, or
for non-HAZARDOUS LIVE voltages
Measuring circuit TERMINALS do not need to be marked if:
ACCESSIBLE (see 5.4.3 aa) and bb)),
a) they are intended to be permanently connected and not
or
b) they are dedicated only for connection to specific TERMINALS of other equipment, or
c) it is obvious from other indications that the RATED voltage does not exceed the levels of
6.3.1.
NOTE Examples of acceptable indications that the RATED voltage of the inputs are intended to not exceed the
levels of 6.3.1 include:
– the full scale deflection marking of a single-range indicating voltmeter or ammeter or maximum marking of a
multi-range multimeter;
– the maximum range marking of a voltage selector switch;
– a marked voltage or power RATING expressed in dB, mW or W, where the equivalent value, as explained in
the documentation, does not exceed 30 V a.c.
Conformity is checked by inspection.
5.4.1 GENERAL
Add the following two new items to the list and a new paragraph at the end of the list:
aa) information about each relevant MEASUREMENT CATEGORY if the measuring circuit is
RATED for MEASUREMENT CATEGORIES (see 5.1.5.101.2);
bb) for measuring circuits that are not RATED for MEASUREMENT CATEGORIES, but that could
be misused by connection to such circuits, a warning not to use the equipment for
measurements on MAINS, and a detailed RATING including TRANSIENT OVERVOLTAGES (see
AA.2.4 for more information).
Some equipment may have multiple MEASUREMENT CATEGORY RATINGS for the same measuring
circuit. For such equipment, the documentation shall clearly identify the MEASUREMENT
CATEGORIES where the equipment is intended to be used and where it shall not be used.

5.4.3 Equipment installation
Add the following two new items to the list:
aa) for measuring circuit TERMINALS intended for permanent connection and that are RATED
MEASUREMENT CATEGORIES, information regarding the MEASUREMENT CATEGORY,
for
RATED voltages or RATED currents as applicable (see 5.1.5.101.2);
bb) for measuring circuit TERMINALS intended for permanent connection and that are not
RATED for MEASUREMENT CATEGORIES, information regarding the RATED voltages, RATED
RATED TRANSIENT OVERVOLTAGES as applicable (see 5.1.5.101.4).
currents, and
6 Protection against electric shock
IEC 61010-1:2010, Clause 6 and IEC 61010-1:2010/AMD1:2016, Clause 6 apply except as
follows:
6.1.2 Exceptions
Add the following new item to the list:
aa) locking or screw-held type measuring TERMINALS, including TERMINALS which do not
require the use of a TOOL.
6.5.2.1 General
Replace the conformity statement with the following:
Conformity is checked as specified in 6.5.2.2 to 6.5.2.6 and 6.5.2.101.
6.5.2.3 Protective conductor TERMINAL
Replace h) 2) with the following:
h) 2) the PROTECTIVE BONDING shall not be interrupted by any switching or interrupting device.
Devices used for indirect bonding in testing and measuring circuits (see 6.5.2.101) are
permitted to be part of the PROTECTIVE BONDING.
Add the following new subclause and figure:
6.5.2.101 Indirect bonding for testing and measuring circuits
PROTECTIVE CONDUCTOR TERMINAL and
Indirect bonding establishes a connection between the
ACCESSIBLE conductive parts if these become HAZARDOUS LIVE as a result of a fault.
Devices to establish indirect bonding are the following:
a) Voltage limiting devices which become conductive when the voltage across them exceeds
the relevant levels of 6.3.2 a), with overcurrent protection to prevent damage of the device.
The duration of current flow versus the body current shall not exceed the levels of
Figure 101.
Conformity is checked by connecting the ACCESSIBLE conductive parts to the minimum and
the maximum HAZARDOUS LIVE voltage according to the equipment RATINGS while the
equipment is operated in NORMAL USE. The current between the ACCESSIBLE conductive parts
and the PROTECTIVE CONDUCTOR TERMINAL is measured with the circuit of Figure A.1.

– 14 – IEC 61010-2-030:2023 © IEC 2023
b) Voltage-sensitive tripping devices which interrupt all poles of the supply connected to the
MAINS or the HAZARDOUS LIVE voltage source, and connect the ACCESSIBLE conductive parts
to the PROTECTIVE CONDUCTOR TERMINAL whenever the voltage across them reaches the
relevant levels of 6.3.2 a). The tripping duration versus the current shall not exceed the
levels of Figure 101.
Conformity is checked by introducing a single fault, then applying the minimum and the
maximum hazardous live voltage at the point where the fault has occurred while the
equipment is operated in normal use. The current between the ACCESSIBLE conductive parts
and the PROTECTIVE CONDUCTOR TERMINAL is measured with the circuit of Figure A.1.
Voltage limiting devices or voltage-sensitive tripping devices as defined in a) and b), shall have
at least the voltage and current RATINGS of the measuring TERMINALS.
Conformity is checked by inspection.

Key
A current a.c. (mA)
B current d.c. (mA)
NOTE This figure is based on Figure 20 for a.c. currents and Figure 22 for d.c. currents of IEC 60479-1:2018.
Figure 101 – Duration of current flow versus body current
for a.c. and d.c. currents
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
HAND-HELD EQUIPMENT 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
TERMINALS are defined in 6.6.101.5.
specialized measuring circuit
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 equipment.
1) ACCESSIBLE parts of locking-type or screw-held-type TERMINALS in unmated position
including TERMINALS which do not require the use of a TOOL for unlocking or unscrewing
shall not be HAZARDOUS LIVE.
Conformity is checked by inspection.
2) ACCESSIBLE parts of other unmated measuring circuit TERMINALS shall be insulated from
HAZARDOUS LIVE parts by PROTECTIVE IMPEDANCE or CLEARANCES and CREEPAGE DISTANCES
meeting the requirements of 2 a) and 2 b).
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.
For measuring circuit TERMINALS with a voltage RATING above 3 000 V, the CLEARANCE
shall be at least the D value of Table K.15 with U equal to 1,25 times the peak value
2 m
of the voltage (see K.3.2).
– 16 – IEC 61010-2-030:2023 © IEC 2023
If the equipment 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
ii) the a.c. voltage test of 6.8.3.1 or the d.c. voltage test of 6.8.3.2 for TERMINAL stressed
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 2 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 the TERMINAL in the
least favourable position.
In addition for equipment 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.
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
from HAZAR
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