IEC 61010-2-032:2012

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 61010-2-032:2012 specifies safety requirements for HAND-HELD and hand-manipulated current sensors described below. These current sensors are for measuring, detecting or injecting current, or indicating current waveforms on circuits without physically opening the current path of the circuit being measured. They may be stand-alone current sensors or accessories to other equipment or parts of combined equipment (see Figure 101). These include measurement circuits which are part of electrical test and measurement equipment, laboratory equipment, or process control equipment. The existence of these current sensors and circuits in equipment requires additional protective means between the current sensor, the circuit and an OPERATOR. This third edition cancels and replaces the second edition published in 2002. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) A new Type D current sensor has been defined.
b) The terminology for MEASUREMENT CATEGORY I has changed. In this Part 2-032, it is termed "not RATED for measurements within MEASUREMENT CATEGORIES II, III, or IV".
c) Requirements for markings of measuring circuit TERMINALS and JAWS have been modified.
d) CLEARANCES and CREEPAGE DISTANCES have been added for unmated measuring circuit TERMINALS.
e) Requirements have been added for specialized measuring circuit TERMINALS.
f) The pull test for endcaps of flexible current sensors has been revised.
g) Requirements for output circuit leads have been revised.
h) Requirements have been added for temperature limits and resistance to heat to prevent thermal HAZARDS from eddy currents and high currents.
i) Requirements for circuits or components used as TRANSIENT OVERVOLTAGE limiting devices have been revised.
j) Requirements have been added for low battery indication.
k) Requirements have been revised and added pertaining to REASONABLY FORESEEABLE MISUSE of measuring circuits, including usage of the current sensor in a manner that might cause arc flash.
l) Requirements for MAINS voltage measuring circuits have been added.
m) Requirements to prevent HAZARDs from short-circuits have been revised and located in a new Clause 102.
n) ROUTINE TESTS have been modified.
o) Insulation requirements for measuring circuits have been primarily located in Annex K.
p) Annex AA has been added to describe the characteristics of MEASUREMENT CATEGORIES.
q) Annex BB has been added to describe HAZARDS that may be encountered when using measuring circuits.
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 2-032: Exigences particulières pour les capteurs de courant, portatifs et manipulés à la main, de test et de mesure électriques

La CEI 61010-2-032:2012 spécifie les exigences de sécurité pour les capteurs de courant PORTATIFS et manipulés à la main décrits ci-dessous. Ces capteurs de courant sont conçus pour mesurer, détecter ou injecter du courant, ou représenter les formes d'onde du courant sans ouverture physique du chemin du courant sur le circuit mesuré. Les capteurs de courant peuvent être autonomes, ou accessoires d'autres appareils ou parties d'appareils combinés (voir la Figure 101). Cela comprend les circuits de mesure qui font partie des appareils électriques d'essai et de mesure, du matériel de laboratoire, des appareils électriques de laboratoire ou des appareils de contrôle de procédés industriels. L'existence de ces capteurs de courant et circuits dans les appareils nécessite des moyens de protection supplémentaires entre le capteur de courant, le circuit et un OPERATEUR. Cette troisième édition annule et remplace la deuxième édition parue en 2002. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'année précédente:
a) Un nouveau Type D de capteur de courant a été défini.
b) La terminologie pour la CATEGORIE DE MESURE I a changé. Dans la présente Partie 2-032, elle est dite "non ASSIGNEE pour mesure en CATEGORIES DE MESURE II, III ou IV".
c) Les exigences pour les marquages des BORNES des circuits de mesure et des MACHOIRES ont été modifiées.
d) Des DISTANCES D'ISOLEMENT et des LIGNES DE FUITE ont été ajoutées pour les BORNES non connectées des circuits de mesure.
e) Des exigences ont été ajoutées pour les BORNES spécialisées des circuits de mesure.
f) L'essai de traction sur les capots d'extrémité des capteurs de courant flexibles a été revu.
g) Les exigences pour les cordons des circuits de sortie ont été revues.
h) Des exigences ont été ajoutées pour les limites de température et la tenue à la chaleur pour empêcher les DANGERS thermiques dus aux courants de Foucault et aux courants élevés.
i) Les exigences pour les circuits ou composants utilisés comme dispositifs de limitation contre les SURTENSIONS TRANSITOIRES ont été revues.
j) Des exigences ont été ajoutées pour l'indication de batterie faible.
k) Des exigences relatives aux MAUVAIS USAGES RAISONNABLEMENT PREVISIBLES de circuits de test et de mesure ont été revues et ajoutées, y compris l'utilisation du capteur de courant pouvant causer un arc électrique.
l) Des exigences pour les circuits de mesure RESEAU ont été ajoutées.
m) Les exigences pour empêcher les DANGERS dus aux courts-circuits ont été revues et placés dans un nouvel Article 102.
n) Les ESSAIS INDIVIDUELS DE SERIE ont été modifiés.
o) Les exigences d'isolation des circuits de mesure sont situées principalement dans l'Annexe K.
p) Une Annexe AA décrivant les caractéristiques des CATEGORIES DE MESURE a été ajoutée.
q) Une Annexe BB décrivant les DANGERS qui peuvent être rencontrés lors de l'utilisation de circuits de test et de mesure a été ajoutée.
Cette publication doit être lue conjointement avec la CEI 61010-1:2010.

General Information

• Status: Published
• Publication Date: 25-Sep-2012
• ICS: 19.080 - Electrical and electronic testing
• ICS: 29.160 - Rotating machinery
• 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 61010-2-032:2019 - 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
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61010-2-032


®


Edition 3.0 2012-09



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
colour
inside


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

Règles de sécurité pour appareils électriques de mesurage, de régulation et de
laboratoire –
Partie 2-032: Exigences particulières pour les capteurs de courant, portatifs et
manipulés à la main, de test et de mesure électriques

IEC 61010-2-032:2012

---------------------- Page: 1 ----------------------
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IEC 61010-2-032



®



Edition 3.0 2012-09







INTERNATIONAL





STANDARD







NORME



INTERNATIONALE
colour

inside










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



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


laboratoire –

Partie 2-032: Exigences particulières pour les capteurs de courant, portatifs et

manipulés à la main, de test et de mesure électriques











INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX X


ICS 19.080 ISBN 978-2-83220-405-4



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

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– 2 – 61010-2-032 © IEC:2012



CONTENTS

FOREWORD . 4


INTRODUCTION . 7

1 Scope and object . 8

2 Normative references . 11


3 Terms and definitions . 11

4 Tests . 12

5 Marking and documentation . 12

6 Protection against electric shock . 16
7 Protection against mechanical HAZARDS . 22
8 Resistance to mechanical stresses . 23
8.1 General . 23
8.2 ENCLOSURE rigidity tests . 23
9 Protection against the spread of fire . 23
10 Equipment temperature limits and resistance to heat . 24
11 Protection against HAZARDS from fluids . 24
12 Protection against radiation, including laser sources, and against sonic and
ultrasonic pressure . 25
13 Protection against liberated gases and substances, explosion and implosion . 25
14 Components and subassemblies . 25
15 Protection by interlocks . 26
16 HAZARDS resulting from application . 26
17 RISK assessment . 26
101 Measuring circuits . 27
102 Prevention of HAZARD from arc flash and short-circuits . 30
102.1 General . 30
102.2 Protection against short-circuits during clamping . 31
102.3 Protection against short-circuits in closed position . 32
Annexes . 33
Annex D (normative) Parts between which insulation requirements are specified (see
6.4, 6.5.3, 6.9.101 and 6.9.103) . 33

Annex F (normative) ROUTINE TESTS . 35
Annex K (normative) Insulation requirements not covered by 6.7 . 36
Annex L (informative) Index of defined terms . 42
Annex AA (normative) MEASUREMENT CATEGORIES . 44
Annex BB (informative) HAZARDS pertaining to measurements performed in certain
environments . 46
Bibliography . 48

Figure 101 – Examples of current sensors and their parts . 10
Figure 102 – Pre-treatment of the JAW ENDS . 18
Figure 103 – CLEARANCE between the PROTECTIVE BARRIER or tactile indicator to the
JAWS and to the HAZARDOUS LIVE conductor . 19
Figure 104 – Treatment of the insulation of a flexible current sensor . 21

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61010-2-032 © IEC:2012 – 3 –


Figure 105 – Pulley for the treatment of Figure 104 . 21

Figure 106 – Test probe to check protection against short-circuits . 31


Figure 107 – Use of the test probe of Figure 106 . 32

Figure D.101 – Parts of current sensors (see also Table D.101) . 33

Figure AA.1 – Example to identify the locations of measuring circuits . 45




Table 101 – CLEARANCES and CREEPAGE DISTANCES for measuring circuit TERMINALS

with HAZARDOUS LIVE conductive parts . 17

Table 102 – Pull forces for endcaps of flexible current sensors . 22

Table 103 – Energy level . 23
Table 104 – Impulse voltages . 26
Table 105 – Thickness of the test probe of Figure 106 and test voltages. 32
Table D.101 – Insulation requirements between circuits and ACCESSIBLE parts of
current sensors . 34
Table F.101 – Test voltages for ROUTINE TESTS of JAWS of current sensors . 35
Table K.101 – CLEARANCES for measuring circuits of MEASUREMENT CATEGORIES II, III
and IV . 37
Table K.102 – Test voltages for testing electric strength of solid insulation in
measuring circuits of MEASUREMENT CATEGORY II . 38
Table K.103 – Test voltages for testing electric strength of solid insulation in
measuring circuits of MEASUREMENT CATEGORY III . 38
Table K.104 – Test voltages for testing electric strength of solid insulation in
measuring circuits of MEASUREMENT CATEGORY IV . 39
Table K.105 – Test voltages for testing long term stress of solid insulation in
measuring circuits . 39
Table AA.1 – Characteristics of MEASUREMENT CATEGORIES . 45

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INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________



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





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
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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
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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 61010-2-032 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
66/474/FDIS 66/488/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 third edition cancels and replaces the second edition published in 2002. This edition
constitutes a technical revision.

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61010-2-032 © IEC:2012 – 5 –


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

edition:


a) A new Type D current sensor has been defined.

b) The terminology for MEASUREMENT CATEGORY I has changed. In this Part 2-032, it is

termed “not RATED for measurements within MEASUREMENT CATEGORIES II, III, or IV”.

c) Requirements for markings of measuring circuit TERMINALS and JAWS have been modified.


d) CLEARANCES and CREEPAGE DISTANCES have been added for unmated measuring circuit
TERMINALS.


e) Requirements have been added for specialized measuring circuit TERMINALS.

f) The pull test for endcaps of flexible current sensors has been revised.
g) Requirements for output circuit leads have been revised.
h) Requirements have been added for temperature limits and resistance to heat to prevent
thermal HAZARDS from eddy currents and high currents.
i) Requirements for circuits or components used as TRANSIENT OVERVOLTAGE limiting
devices have been revised.
j) Requirements have been added for low battery indication.
k) Requirements have been revised and added pertaining to REASONABLY FORESEEABLE
MISUSE of measuring circuits, including usage of the current sensor in a manner that
might cause arc flash.
l) Requirements for MAINS voltage measuring circuits have been added.
m) Requirements to prevent HAZARDs from short-circuits have been revised and located in a
new Clause 102.
n) ROUTINE TESTS have been modified.
o) Insulation requirements for measuring circuits have been primarily located in Annex K.
p) Annex AA has been added to describe the characteristics of MEASUREMENT CATEGORIES.
q) Annex BB has been added to describe HAZARDS that may be encountered when using
measuring circuits.
This Part 2-032 is intended to be used in conjunction with IEC 61010-1. It was established on
the basis of the third edition (2010). Consideration may be given to future editions of, or
amendments to, IEC 61010-1.
This Part 2-032 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 and
hand-manipulated current sensors for electrical test and measurement.

Where a particular subclause of Part 1 is not mentioned in this Part 2-032, 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;

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b) subclauses, figures, tables and notes which are additional to those in Part 1 are numbered

starting from 101; and additional list items are numbered from aa). 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 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.


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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61010-2-032 © IEC:2012 – 7 –


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 2s of the standard which are to be read in conjunction with the Part 1 requirements.


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

and hand-manipulated current sensors (see Clause 1).


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.
Part 2-033 specifies the safety requirements for HAND HELD METERS that have a primary
purpose of measuring voltage on a live MAINS CIRCUIT.
Except for protective bonding, all requirements of Part 2-030 have been included into
Part 2-032. Equipment within the scopes of Part 2-030 and Part 2-032 are considered to be
covered by the requirements of Part 2-032. However, for equipment within the scope of both
Part 2-032 and Part 2-033, the two standards are to be read in conjunction.

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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








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 HAND-HELD and hand-manipulated
current sensors described below.
These current sensors are for measuring, detecting or injecting current, or indicating current
waveforms on circuits without physically opening the current path of the circuit being
measured. They may be stand-alone current sensors or accessories to other equipment or
parts of combined equipment (see Figure 101). These include measurement circuits which are
part of electrical test and measurement equipment, laboratory equipment, or process control
equipment. The existence of these current sensors and circuits in equipment requires
additional protective means between the current sensor, the circuit and an OPERATOR.
NOTE 1 This part includes also the requirements of Part 2-030. Testing and measuring circuits that are not within
the scope of this part are considered to be covered by the requirements of Part 1 or other parts 2s of IEC 61010,
and then will also need to meet the requirements of these other parts with the exception of Part 2-030. Current
clamp meters and similar currents sensors that have a primary purpose of measuring voltage on a live MAINS
CIRCUIT are also within the scope of Part 2-033.
NOTE 2 Some current sensors are also known as current clamps and current probes.
Current sensors require hand manipulation before or after a test or measurement, but do not
necessarily need to be HAND-HELD during the test or measurement.
NOTE 3 Some current sensors designed for portable use can also be used for fixed installations.

The following types of current sensors are covered:
a) Type A: a current sensor designed to be applied around or removed from UNINSULATED
HAZARDOUS LIVE conductors. Type A current sensors have defined HAND-HELD or hand-
manipulated parts providing protection against electric shock from the conductor being
measured, and also have protection against short-circuits between wires and busbars
during clamping.
b) Type B: a current sensor which has protection against short-circuits between wires or
busbars during clamping but without defined HAND-HELD or hand-manipulated parts which
provide protection against electric shock during clamping. Additional protective means are
necessary to avoid electric shock from HAZARDOUS LIVE conductors which cannot be de-
energised during application or removal of the current sensor.
EXAMPLE 1 Flexible current sensors.
c) Type C: a current sensor without protection against short-circuits between wires or
busbars during clamping. Type C current sensors are intended to be applied to or removed

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61010-2-032 © IEC:2012 – 9 –


from UNINSULATED HAZARDOUS LIVE conductors or from non-limited-energy circuit

conductors only when they are de-energised.


EXAMPLE 2 Split-core transducers.

d) Type D: a current sensor designed to be applied around or removed from insulated

conductors or from limited-energy circuit conductors.

A Type D current sensor does not need protection against short-circuits during clamping

and has no defined HAND-HELD or hand-manipulated parts providing protection against

electric shock from the conductor being measured.

EXAMPLE 3 Current probes for oscilloscopes and earth leakage current detectors.


NOTE 4 All current sensors can also be used around insulated conductors. In this case, HAZARDS are limited to
acceptable levels by the insulation of the conductors.

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1
1 3




3


2
2




Type A Type A

Current sensor as an accessory Current sensor with self-contained measuring functions
or with additional measuring functions
1
2

2 1

Type B Type C
Flexible current sensor Split-core current sensor


1

2

IEC  1865/12
Type D
Current sensor for non HAZARDOUS LIVE applications
(shown with a sliding JAW)


Key
1 JAW END(S)
2 JAW
3 measuring circuit TERMINALS
Figure 101 – Examples of current sensors and their parts
1.2.1 Aspects included in scope
Addition:
Add the following two new paragraphs 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
0,00 A

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61010-2-032 © IEC:2012 – 11 –


Requirements for prevention of HAZARD from arc flash and short-circuits are given in

Clause 102.



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 definition:
3.1.101
HAND-HELD
intended to be supported by one hand during NORMAL USE
3.2 Parts and accessories
Addition:
Add the following new definitions:
3.2.101
JAW
part of a current sensor which surrounds or partially surrounds the conductor under test
3.2.102
JAW END
part of the JAW where opening occurs while clamping around a conductor
3.5 Safety terms
Replacement:

Replace the definitions of 3.5.4 and 3.5.5 with the following new definitions:
3.5.4
MAINS
low-voltage electricity supply system to which the current sensor concerned is designed to be
connected for the purpose of powering the current sensor or for measurements
3.5.5
MAINS CIRCUIT
circuit which is intended to be directly connected to the MAINS for the purpose of powering the
current sensor or for measurements

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