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 61010-2-032:2019 is available as IEC 61010-2-032:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61010-2-032:2019 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 can 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. These current sensors and circuits need additional protective means between the current sensor, the circuit and an operator. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- It has been indicated that current sensors used as fixed equipment are not within the scope of this document.
- Fork-style current sensors have been added.
- Requirements from Part 2-033 applicable to clamp multimeters that have a primary purpose of measuring voltage on live mains have been included in the new normative Annex EE.
- Clearances and creepage distances for measuring circuit terminals exceeding 1 000 V a.c. or 1 414 V d.c. and for wet locations have been specified.
- Reduced creepage distances are allowed to be according to material group I for all insulating materials.
- Requirements for input/output circuits of Type A, Type B and Type C current sensors have been detailed in 6.9.102.
- Requirements for output circuit leads have been modified.
- The Jaw impact test has been limited to the front of the jaws.
- The abrasion test for cords of flexible current sensors has been removed and replaced by a pressure test at high temperature.
- The voltage source for testing overvoltage limiting components or circuits may be limited to 400 V.
- Reference to IEC 61010-031 for probe assemblies has been added.
- Requirements for the prevention of transient overvoltages for mains voltage measuring circuits have been added.
- Requirements for measuring circuits from 1 000 V to 3 000 V have been added.
- An informative Annex CC about the dimensions of banana terminals has been added.
- A flowchart for insulation according to the type of circuit has been added in a new Annex DD.
The contents of the corrigendum of February 2020 have been included in this copy.

Exigences 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 manuellement, pour essai électrique et mesurage

IEC 61010-2-032:2019 est disponible sous forme de IEC 61010-2-032:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
L'IEC 61010-2-032:2019 spécifie les exigences de sécurité pour les capteurs de courant portatifs et manipulés manuellement décrits ci-dessous. Ces capteurs de courant sont conçus pour mesurer, détecter ou injecter du courant, ou afficher les formes d'onde du courant sur les circuits 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 ou des appareils de contrôle de procédés industriels. Ces capteurs de courant et circuits nécessitent des moyens de protection supplémentaires entre le capteur de courant, le circuit et un opérateur. Cette quatrième édition annule et remplace la troisième édition parue en 2012. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- Il est indiqué que les capteurs de courant utilisés comme appareils installés à poste fixe ne relèvent pas du domaine d'application du présent document.
- Les capteurs de courant à fourche ont été ajoutés.
- Les exigences de la Partie 2-033 applicables aux pinces multimétriques qui ont pour objectif principal de mesurer la tension sur des réseaux sous tension ont été incluses dans la nouvelle Annexe EE normative.
- Les distances d'isolement et les lignes de fuite applicables aux emplacements humides et aux bornes d'un circuit de mesure dont la tension alternative est supérieure à 1 000 V ou dont la tension continue est supérieure à 1 414 V ont été spécifiées.
- Il est admis d'utiliser les lignes de fuite conformes au groupe de matériaux I pour tous les matériaux isolants.
- Les exigences relatives aux circuits d'entrée/sortie des capteurs de courant de Type A, de Type B et de Type C ont été détaillées en 6.9.102.
- Les exigences relatives aux cordons des circuits de sortie ont été modifiées.
- L'essai de choc de la mâchoire a été limité à la partie avant des mâchoires.
- L'essai d'abrasion des cordons de capteurs de courant flexibles a été supprimé et remplacé par un essai de pression à haute température.
- La source de tension utilisée pour l'essai des composants ou des circuits de limitation des surtensions peut être limitée à 400 V.
- Une référence à l'IEC 61010-031 pour les sondes équipées a été ajoutée.
- Des exigences permettant d'éviter les surtensions transitoires applicables aux circuits de mesure de tension de réseau ont été ajoutées.
- Des exigences concernant les circuits de mesure entre 1 000 V et 3 000 V ont été ajoutées.
- Une Annexe CC informative relative aux dimensions des bornes "banane" a été ajoutée.
- Un organigramme de l'isolation selon le type de circuit a été ajouté dans une nouvelle Annexe DD.
Le contenu du corrigendum de février 2020 a été pris en considération dans cet exemplaire.

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Published
Publication Date
20-Jun-2019
Current Stage
PPUB - Publication issued
Completion Date
21-Jun-2019
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IEC 61010-2-032
Edition 4.0 2019-06
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
Exigences 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 manuellement, pour essai électrique et mesurage
IEC 61010-2-032:2019-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 61010-2-032
Edition 4.0 2019-06
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
Exigences 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 manuellement, pour essai électrique et mesurage
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.080 ISBN 978-2-8322-6994-7

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

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

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 61010-2-032:2019 © IEC 2019
CONTENTS

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

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

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

2 Normative references .................................................................................................... 10

3 Terms and definitions .................................................................................................... 10

4 Tests ............................................................................................................................. 11

5 Marking and documentation ........................................................................................... 12

6 Protection against electric shock ................................................................................... 16

7 Protection against mechanical HAZARDS ......................................................................... 21

8 Resistance to mechanical stresses ................................................................................ 21

9 Protection against the spread of fire .............................................................................. 25

10 Equipment temperature limits and resistance to heat ..................................................... 25

11 Protection against HAZARDS from fluids and solid foreign objects ................................... 26

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

ultrasonic pressure ........................................................................................................ 26

13 Protection against liberated gases and substances, explosion and implosion ................ 26

14 Components and subassemblies ................................................................................... 27

15 Protection by interlocks ................................................................................................. 28

16 HAZARDS resulting from application ................................................................................ 28

17 RISK assessment ........................................................................................................... 28

Annexes ............................................................................................................................... 36

Annex D (normative) Parts between which insulation requirements are specified (see

6.4, 6.5.3, 6.9.101 and 6.101) ............................................................................................... 36

Annex F (normative) Routine tests ....................................................................................... 38

Annex K (normative) Insulation requirements not covered by 6.7 ......................................... 39

Annex L (informative) Index of defined terms ....................................................................... 46

Annex AA (normative) MEASUREMENT CATEGORIES ................................................................ 47

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

environments ........................................................................................................................ 49

Annex CC (informative) 4-mm "banana" TERMINALS .............................................................. 52

Annex DD (informative) Flowchart for insulation according to the type of circuit ................... 54

Annex EE (normative) CLAMP MULTIMETER ............................................................................ 57

Bibliography .......................................................................................................................... 60

Figure 101 – Examples of current sensors and their parts ....................................................... 9

Figure 102 – CLEARANCE between the PROTECTIVE BARRIER to the JAWS and to the

HAZARDOUS LIVE conductor .................................................................................................... 19

Figure 103 – Abrasion test of the JAW ENDS ........................................................................... 22

Figure 104 – Impact points for JAW impact test ...................................................................... 23

Figure 105 – Indentation device ............................................................................................ 24

Figure 106 – Test probe to check protection against short-circuits ........................................ 34

Figure 107 – Use of the test probe of Figure 106 .................................................................. 34

---------------------- Page: 4 ----------------------
IEC 61010-2-032:2019 © IEC 2019 – 3 –

Figure D.101 – Parts of current sensors (see also Table D.101) ............................................ 36

Figure AA.1 – Example to identify the locations of measuring circuits ................................... 48

Figure CC.1 – Recommended dimensions of 4-mm TERMINALS .............................................. 53

Figure DD.1 – Requirements for CLEARANCE, CREEPAGE DISTANCE and solid insulation ........... 56

Figure EE.1 – Examples of CLAMP MULTIMETERS .................................................................... 57

Table 1 – Symbols ................................................................................................................ 12

Table 101 – CLEARANCES and CREEPAGE DISTANCES for measuring circuit TERMINALS

with HAZARDOUS LIVE conductive parts up to 1 000 V a.c. or 1 500 V d.c. ............................... 17

Table 102 – Energy level for JAW impact test ........................................................................ 22

Table 103 – Pull forces for endcaps of flexible current sensors ............................................. 25

Table 104 – Impulse voltages ............................................................................................... 28

Table 105 – Thickness of the test probe of Figure 106 and test voltages............................... 35

Table D.101 – Insulation requirements for current sensors .................................................... 37

Table K.101 – CLEARANCES of measuring circuits RATED for MEASUREMENT CATEGORIES ......... 40

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

measuring circuits RATED for MEASUREMENT CATEGORIES ........................................................ 41

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

measuring circuits RATED for MEASUREMENT CATEGORIES ........................................................ 42

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

circuits RATED for MEASUREMENT CATEGORIES ......................................................................... 43

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

measuring circuits RATED FOR MEASUREMENT CATEGORIES III and IV ....................................... 44

Table AA.1 – Characteristics of MEASUREMENT CATEGORIES ................................................... 48

---------------------- Page: 5 ----------------------
– 4 – IEC 61010-2-032:2019 © IEC 2019
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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agreement between the two organizations.

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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

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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.

This fourth edition cancels and replaces the third edition published in 2012. This edition

constitutes a technical revision.

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

edition:

a) It has been indicated that current sensors used as FIXED EQUIPMENT are not within the

scope of this document.
b) Fork-style current sensors have been added.
---------------------- Page: 6 ----------------------
IEC 61010-2-032:2019 © IEC 2019 – 5 –

c) Requirements from Part 2-033 applicable to CLAMP MULTIMETERS that have a primary

purpose of measuring voltage on live MAINS have been included in the new normative

Annex EE.
LEARANCES and CREEPAGE DISTANCES for measuring circuit TERMINALS exceeding
d) C
1 000 V a.c. or 1 414 V d.c. and for WET LOCATIONS have been specified.

e) Reduced CREEPAGE DISTANCES are allowed to be according to material group I for all

insulating materials.

f) Requirements for input/output circuits of Type A, Type B and Type C current sensors

have been detailed in 6.9.102.
g) Requirements for output circuit leads have been modified.
h) The JAW impact test has been limited to the front of the JAWS.

i) The abrasion test for cords of flexible current sensors has been removed and replaced by

a pressure test at high temperature.

j) The voltage source for testing overvoltage limiting components or circuits may be limited

to 400 V.
k) Reference to IEC 61010-031 for probe assemblies has been added.

l) Requirements for the prevention of TRANSIENT OVERVOLTAGES for MAINS voltage measuring

circuits have been added.
m) Requirements for measuring circuits from 1 000 V to 3 000 V have been added.
TERMINALS has been added.
n) An informative Annex CC about the dimensions of banana

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

Annex DD.
The text of this International Standard is based on the following documents:
FDIS Report on voting
66/691/FDIS 66/695/RVD

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

the report on voting indicated in the above table.

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

A list of all 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 Part 2-032 is to be used in conjunction with the latest edition of IEC 61010-1. It was

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

(2016), hereinafter referred to as Part 1.

This Part 2-032 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 2-032 states "addition", "modification",

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

should be adapted accordingly.
---------------------- Page: 7 ----------------------
– 6 – IEC 61010-2-032:2019 © IEC 2019
In this standard:
a) the fol
lowing print types are used:
– requirements: in roman type;
NOTES: in small roman type;
– conformity and tests: in italic type;
– terms used throughout this standard which have been defined in Clause 3: SMALL
ROMAN CAPITALS;

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

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

items are lettered from aa).

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

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.

The contents of the corrigendum of February 2020 have been included in this copy.

---------------------- Page: 8 ----------------------
IEC 61010-2-032:2019 © IEC 2019 – 7 –
INTRODUCTION

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

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

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

032. Equipment within the scopes of both Part 2-030 and Part 2-032 are considered to be

covered by the requirements of this Part 2-032.

Part 2-033 specifies the safety requirements for hand-held multimeters that have the primary

purpose of measuring voltage on live MAINS. For equipment within the scope of Part 2-032 and

Part 2-033, only this Part 2-032 is applicable.

Part 2-034 specifies the safety requirements for measurement equipment for insulation

resistance and test equipment for electric strength which are connected to units, lines or

circuits for test or measurement purposes. For equipment within the scope of Part 2-032 and

Part 2-034, both documents should be read in conjunction.
---------------------- Page: 9 ----------------------
– 8 – IEC 61010-2-032:2019 © IEC 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
1 Scope and object
This clause of Part 1 is applicable except as follows:
1.1.1 Equipment included in scope
Replace the existing text with the following:
HAND-HELD and hand-manipulated
This part of IEC 61010 specifies safety requirements for
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 can 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. These current sensors and circuits need additional protective means between the

current sensor, the circuit and an OPERATOR.

NOTE 1 Combined equipment is equipment that is electrically connected to a current sensor by means of a

permanent connection which can be detached only by the use of a TOOL.

NOTE 2 Some current sensors are also known as current clamps, CLAMP MULTIMETERS and current probes.

Current sensors are hand-manipulated before and/or after a test or measurement, but do not

necessarily need to be HAND-HELD during the test or measurement. Current sensors used as

FIXED EQUIPMENT are not within the scope of this document.
The following types of current sensors are covered:

a) Type A: a current sensor designed to be applied to or removed from HAZARDOUS LIVE

UNINSULATED 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 between

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 from HAZARDOUS LIVE UNINSULATED 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 to or removed from insulated conductors

or from limited-energy circuit conductors.
---------------------- Page: 10 ----------------------
IEC 61010-2-032:2019 © IEC 2019 – 9 –
EXAMPLE 3 Current probes for oscilloscopes and earth leakage current detectors.

All current sensors can also be used with insulated conductors. In this case, HAZARDS are

limited to acceptable levels by the insulation of the conductors.
Additional requirements for CLAMP MULTIMETERS are given in Annex EE.

Figure 101 shows graphical representations of typical current sensors for illustration

purposes. Current sensors can look different depending on the design.

Type A current sensor as an accessory Type A current sensor with self-contained and/or

additional measuring functions
Type A current sensor with fork-style JAWS Type B flexible current sensor
part of a piece of combined equipment
Type C split-core current sensor 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
Add the following three new paragraphs at the end of the subclause:
---------------------- Page: 11 ----------------------
– 10 – IEC 61010-2-032:2019 © IEC 2019

Requirements for protection against HAZARDS resulting from NORMAL USE and REASONABLY

FORESEEABLE MISUSE of measuring circuits are given in Clause 101.

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

Clause 102.

Requirements for reliance on the displayed value of CLAMP MULTIMETERS are given in

Clause EE.5 .
2 Normative references
This clause of Part 1 is applicable except as follows:
Replace "IEC 61010-031" with the following new reference:

IEC 61010-031:2015, Safety requirements for electrical equipment for measurement, control

and laboratory use – Part 031: Safety requirements for hand-held and hand-manipulated

probe assemblies for electrical test and measurement
IEC 61010-031:2015/AMD1:2018

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

reference:

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

procedure requirements, test equipment
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.1 Equipment and states of equipment
Add the following two new terms and definitions:
3.1.101
HAND-HELD
intended to be supported by one hand during NORMAL USE
3.1.102
CLAMP MULTIMETER

HAND-HELD multi-range and multifunction measuring instrument intended to measure current

on a live MAINS without physically opening the conductors, voltage on a live MAINS and other

electrical quantities such as resistance
3.2 Parts and accessories
Add the following two new terms and 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
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IEC 61010-2-032:2019 © IEC 2019 – 11 –
3.5 Safety terms
Replace the definition of 3.5.4 with the following new definition:
3.5.4
MAINS
electricity supply system
Add the following new term and definition:
3.5.101
MEASUREMENT CATEGORY

classification of testing and measuring circuits according to the type of MAINS to which they

are intended to be connected

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

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

energy limitation or
...

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