Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 2-030: Particular requirements for testing and measuring circuits

IEC 61010-2-030:2010 specifies safety requirements for testing and measuring circuits which are connected for test or measurement purposes to devices or circuits outside the measurement equipment itself. These include measurement circuits which are part of electrical test and measurement equipment, laboratory equipment, or process control equipment. The existence of these circuits in equipment requires additional protective means between the circuit and an OPERATOR. This Part 2-030 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. Consideration may be given to future editions of, or amendments to, IEC 61010-1.

Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2-030: Besondere Bestimmungen für Prüf- und Messstromkreise

Règles de sécurité pour appareils électriques de mesurage, de régulation et de laboratoire - Partie 2-030: Exigences particulières pour les circuits de test et de mesure

La CEI 61010-2-030:2010 définit les exigences de sécurité pour les circuits de test et de mesure qui sont reliés à des fins d'essai ou de mesure à des dispositifs ou à des circuits externes à l'appareil de mesure même. Ceux-ci comprennent les circuits de mesure qui font partie d'appareils électriques d'essai et de mesure, d'appareils de laboratoire ou d'appareils de contrôle de processus. L'existence de ces circuits dans l'appareil exige des moyens de protection additionnels entre le circuit et un OPERATEUR. La présente Partie 2-030 doit être utilisée conjointement avec la dernière édition de la CEI 61010-1. Elle a été établie sur la base de la troisième édition (2010) de la CEI 61010-1. Les éditions ou amendements futurs de la CEI 61010-1 pourront être pris en considération.

Varnostne zahteve za električno opremo za meritve, nadzor in laboratorijsko uporabo - 2-030. del: Posebne zahteve za preskusna in merilna vezja (IEC 61010-2-030:2010)

Ta del IEC 61010 določa varnostne zahteve za preskusna in merilna vezja, ki so povezana za namene preskusa ali meritve na naprave zunaj same merilne opreme. Te vsebujejo merilna vezja, ki so del električnega preskusa, in merilno opremo, laboratorijske opreme ali opreme za nadzor procesov. Obstoj teh vezij v opremi potrebuje dodatno zaščito med vezji in
OPERATERJEM. OPOMBA 1: Ta preskusna in merilna vezja lahko na primer:
- merijo napetosti v vezjih druge opreme,
- merijo temperaturo ločene naprave skozi termočlen,
- merijo silo na ločeni napravi preko merilca napetosti,
- injicirajo napetost v vezje, da analizirajo nov načrt.
OPOMBA 2: Za preskusna in merilna vezja, ki niso predmet tega 2. dela, se šteje, da jih zajemajo zahteve 1. dela. OPOMBA 3: Oprema, ki vsebuje ta preskusna in merilna vezja, je lahko namenjena za izvajanje preskusov in merjenja na nevarnih prevodnikih, vključno z prevodniki na GLAVNIH VODIH in prevodnikih telekomunikacijskih omrežij (glej dodatek B za vidike NEVARNOSTI, vpletene v različne preskuse in meritve).

General Information

Status
Published
Publication Date
14-Oct-2010
Current Stage
6060 - Document made available
Due Date
15-Oct-2010
Completion Date
15-Oct-2010

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SLOVENSKI STANDARD
SIST EN 61010-2-030:2010
01-december-2010
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9DUQRVWQH]DKWHYH]DHOHNWULþQRRSUHPR]DPHULWYHQDG]RULQODERUDWRULMVNR

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Safety requirements for electrical equipment for measurement, control and laboratory

use - Part 2-030: Particular requirements for testing and measuring circuits (IEC 61010-2

-030:2010)

Sicherheitsbestimmungen für elektrische Mess-, Steuer-, Regel- und Laborgeräte - Teil 2

-030: Besondere Bestimmungen für Prüf- und Messkreise (IEC 61010-2-030:2010)
Règles de sécurité pour appareils électriques de mesurage, de régulation et de

laboratoire - Partie 2-030: Prescriptions particulières pour les circuits de test et de

mesure (CEI 61010-2-030:2010)
Ta slovenski standard je istoveten z: EN 61010-2-030:2010
ICS:
19.080 (OHNWULþQRLQHOHNWURQVNR Electrical and electronic
SUHVNXãDQMH testing
71.040.10 Kemijski laboratoriji. Chemical laboratories.
Laboratorijska oprema Laboratory equipment
SIST EN 61010-2-030:2010 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61010-2-030:2010
---------------------- Page: 2 ----------------------
SIST EN 61010-2-030:2010
EUROPEAN STANDARD
EN 61010-2-030
NORME EUROPÉENNE
October 2010
EUROPÄISCHE NORM
ICS 19.080; 71.040.10
English version
Safety requirements for electrical equipment for measurement, control,
and laboratory use -
Part 2-030: Particular requirements for testing and measuring circuits
(IEC 61010-2-030:2010)
Règles de sécurité pour appareils Sicherheitsbestimmungen für elektrische

électriques de mesurage, de régulation et Mess-, Steuer-, Regel- und Laborgeräte -

de laboratoire - Teil 2-030: Besondere Bestimmungen für
Partie 2-030: Exigences particulières pour Prüf- und Messkreise
les circuits de test et de mesure (IEC 61010-2-030:2010)
(CEI 61010-2-030:2010)

This European Standard was approved by CENELEC on 2010-10-01. CENELEC members are bound to comply

with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard

the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on

application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other

language made by translation under the responsibility of a CENELEC member into its own language and notified

to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,

the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,

Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,

Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61010-2-030:2010 E
---------------------- Page: 3 ----------------------
SIST EN 61010-2-030:2010
EN 61010-2-030:2010 - 2 -
Foreword

The text of document 66/417/FDIS, future edition 1 of IEC 61010-2-030, prepared by IEC TC 66, Safety

of measuring, control and laboratory equipment, was submitted to the IEC-CENELEC parallel vote and

was approved by CENELEC as EN 61010-2-030 on 2010-10-01.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent

rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2011-07-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2013-10-01
with the EN have to be withdrawn

This Part 2-030 is to be used in conjunction with the latest edition of EN 61010-1, Safety requirements for

electrical equipment for measurement, control and laboratory use - Part 1: General requirements. It was

established on the basis of the 2010 edition of EN 61010-1. Amendments and revisions of Part 1 have

also to be taken into account and the dates when such changes become applicable will be stated in the

relevant amendment or revision of Part 1.

This Part 2-030 supplements or modifies the corresponding clauses in EN 61010-1 so as to convert it into

the European Standard: Particular requirements for testing and measuring circuits.

Where a particular subclause of Part 1 is not mentioned in this part 2, 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 the second edition of EN 61010-1, the requirements for testing and measuring circuits were included in

Part 1 itself. In the third edition of EN 61010-1, these requirements have been removed from Part 1 and

have become the basis for the requirements in this Part 2.

In addition to the requirements removed from Part 1, the following major requirements have been added

to this standard. Numerous other changes have also been made.

− The terminology for MEASUREMENT CATEGORY I has changed. In this Part 2, it is termed “not rated for

measurements within MEASUREMENT CATEGORIES II, III, or IV”.

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

− Requirements have been added for specialized measuring circuit TERMINALS.
− Requirements for TRANSIENT OVERVOLTAGE limiting devices have been revised.

− Requirements have been revised and added pertaining to REASONABLY FORESEEABLE MISUSE of

measuring circuits, including disconnection of the protective earth and usage of the equipment in a

manner that might cause arc flash.

− Insulation requirements for measuring circuits have been primarily located in Annex K.

− Annex AA has been added to describe the characteristics of MEASUREMENT CATEGORIES.

− Annex BB has been added to describe hazards that may be encountered when using measuring

circuits.
NOTE 1 The following print types are used:
– requirements: in roman type;
---------------------- Page: 4 ----------------------
SIST EN 61010-2-030:2010
- 3 - EN 61010-2-030:2010
– conformity and test: in italic type;
– NOTES: in small roman type;

– terms used throughout this standard which have been defined in Clause 3: SMALL ROMAN CAPITALS;

NOTE 2 Subclauses, figures, tables and notes which are additional to those in Part 1 are numbered starting from 101. Additional

Annexes are numbered AA and BB.
Annex ZA of Part 1 is applicable.
__________
Endorsement notice

The text of the International Standard IEC 61010-2-030:2010 was approved by CENELEC as a European

Standard without any modification.
__________
Bibliography
Add the following reference to the Bibliography of Part 1:
EN 41003:1999
IEC 61010-2-032 NOTE Harmonized as EN 61010-2-032
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SIST EN 61010-2-030:2010
---------------------- Page: 6 ----------------------
SIST EN 61010-2-030:2010
IEC 61010-2-030
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety requirements for electrical equipment for measurement, control, and
laboratory use –
Part 2-030: Particular requirements for testing and measuring circuits
Règles de sécurité pour appareils électriques de mesurage, de régulation et
de laboratoire –
Partie 2-030: Exigences particulières pour les circuits de test et de mesure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 19.080; 71.040.10 ISBN 978-2-88910-988-3
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 61010-2-030:2010
– 2 – 61010-2-030 © IEC:2010
CONTENTS

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

1 Scope and object ...........................................................................................................7

2 Normative references.....................................................................................................7

3 Terms and definitions ....................................................................................................7

4 Tests .............................................................................................................................8

5 Marking and documentation ...........................................................................................8

6 Protection against electric shock....................................................................................9

7 Protection against mechanical HAZARDS .......................................................................12

8 Resistance to mechanical stresses ..............................................................................12

9 Protection against the spread of fire ............................................................................12

10 Equipment temperature limits and resistance to heat ...................................................12

11 Protection against HAZARDS from fluids ........................................................................12

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

ultrasonic pressure ......................................................................................................12

13 Protection against liberated gases and substances, explosion and implosion...............12

14 Components and subassemblies..................................................................................12

15 Protection by interlocks ...............................................................................................13

16 HAZARDS resulting from application ..............................................................................13

17 RISK assessment..........................................................................................................13

101 Measuring circuits........................................................................................................13

Annexes ...............................................................................................................................18

Annex K (normative) Insulation requirements not covered by 6.7 .........................................18

Annex L (informative) Index of defined terms .......................................................................24

Annex AA (normative) Measurement categories...................................................................25

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

environments ........................................................................................................................28

Bibliography..........................................................................................................................31

Figure AA.1 – Example to identify the locations of measuring circuits ...................................26

Table 101 – CLEARANCES and CREEPAGE DISTANCES for measuring circuit TERMINALS

with HAZARDOUS LIVE conductive parts ...................................................................................11

Table 102 – Impulse withstand voltages................................................................................13

Table K.101 – CLEARANCES for MEASUREMENT CATEGORIES II, III and IV .................................19

Table K.102 – Test voltages for testing electric strength of solid insulation in

measuring circuits of MEASUREMENT CATEGORY II ...................................................................20

Table K.103 – Test voltages for solid insulation in measuring circuits of

MEASUREMENT CATEGORY III ...................................................................................................20

Table K.104 – Test voltages for testing electric strength of solid insulation in

measuring circuits of MEASUREMENT CATEGORY IV ..................................................................20

Table K.105 – Test voltages for testing long term stress of solid insulation in

measuring circuits.................................................................................................................21

Table K.106 – Maximum TRANSIENT OVERVOLTAGES ...............................................................23

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SIST EN 61010-2-030:2010
61010-2-030 © IEC:2010 – 3 –

Table AA.1 – Characteristics of MEASUREMENT CATEGORIES ...................................................27

---------------------- Page: 9 ----------------------
SIST EN 61010-2-030:2010
– 4 – 61010-2-030 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
Part 2-030: Particular requirements for testing and 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) 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 61010-2-030 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
66/417/FDIS 66/427/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 Part 2-030 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. Consideration may be

given to future editions of, or amendments to, IEC 61010-1.
---------------------- Page: 10 ----------------------
SIST EN 61010-2-030:2010
61010-2-030 © IEC:2010 – 5 –

This Part 2-030 supplements or modifies the corresponding clauses in IEC 61010-1 so as

to convert that publication into the IEC standard: Particular requirements for testing and

measuring circuits.

Where a particular subclause of Part 1 is not mentioned in this part 2, 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 the second edition of IEC 61010-1, the requirements for testing and measuring circuits

were included in Part 1 itself. In the third edition of IEC 61010-1, these requirements have

been removed from Part 1 and have become the basis for the requirements in this Part 2.

In addition to the requirements removed from Part 1, the following major requirements

have been added to this standard. Numerous other changes have also been made.
MEASUREMENT CATEGORY I has changed. In this Part 2, it is termed
• The terminology for
“not rated for measurements within MEASUREMENT CATEGORIES II, III, or IV”.

• CLEARANCES and CREEPAGE DISTANCES have been added for unmated measuring circuit

TERMINALS.
• Requirements have been added for specialized measuring circuit TERMINALS.
• Requirements for TRANSIENT OVERVOLTAGE limiting devices have been revised.
• Requirements have been revised and added pertaining to REASONABLY FORESEEABLE

MISUSE of measuring circuits, including disconnection of the protective earth and usage

of the equipment in a manner that might cause arc flash.

• Insulation requirements for measuring circuits have been primarily located in Annex K.

• Annex AA has been added to describe the characteristics of MEASUREMENT CATEGORIES.

• Annex BB has been added to describe hazards that may be encountered when using
measuring circuits.
In this standard:
a) the following print types are used:
– requirements: in roman type;
– NOTES: in small roman type;
– conformity and test: in italic type;
– terms used throughout this standard which have been defined in Clause 3: SMALL
ROMAN CAPITALS;

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

numbered starting from 101. Additional Annexes are numbered AA and BB.

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

A list of all 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.
---------------------- Page: 11 ----------------------
SIST EN 61010-2-030:2010
– 6 – 61010-2-030 © IEC:2010

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.
---------------------- Page: 12 ----------------------
SIST EN 61010-2-030:2010
61010-2-030 © IEC:2010 – 7 –
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT
FOR MEASUREMENT, CONTROL, AND LABORATORY USE –
Part 2-030: Particular requirements for testing and measuring circuits
1 Scope and object
This clause of Part 1 is applicable except as follows:
1.1.1 Equipment included in scope
Replace the text with the following:

This part of IEC 61010 specifies safety requirements for testing and measuring circuits

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

measurement equipment itself.

These include measurement circuits which are part of electrical test and measurement

equipment, laboratory equipment, or process control equipment. The existence of these

circuits in equipment requires additional protective means between the circuit and an

OPERATOR.
NOTE 1 These testing and measuring circuits may, 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 onto a circuit to analyze a new design.

NOTE 2 Testing and measuring circuits that are not within the scope of this Part 2 are considered to be

covered by the requirements of Part 1.

NOTE 3 Equipment containing these testing and measuring circuits may be intended for performing tests and

measurements on hazardous conductors, including MAINS conductors and telecommunication network

conductors. See Annex BB for considerations of HAZARDS involved in various tests and measurements.

2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.5 Safety terms
Add a new definition:
3.5.101
MEASUREMENT CATEGORY

classification of testing and measuring circuits according to the type of MAINS CIRCUITS to

which they are intended to be connected
---------------------- Page: 13 ----------------------
SIST EN 61010-2-030:2010
– 8 – 61010-2-030 © IEC:2010

NOTE MEASUREMENT CATEGORIES take into account OVERVOLTAGE CATEGORIES, short-circuit current levels, the

location in the building installation at which the test or measurement is to be made, and some forms of energy

limitation or transient protection included in the building installation. See Annex AA for more information.

4 Tests
This clause of Part 1 is applicable.
5 Marking and documentation
This clause of Part 1 is applicable, except as follows:
5.1.5 TERMINALS, connections and operating devices
Add a new subclause:
5.1.5.101 Measuring circuit TERMINALS
5.1.5.101.1 General
Except as permitted in 5.1.5.101.4:

a) the RATED voltage to earth of measuring circuit TERMINALS shall be marked, and

b) 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 pair or set of measuring circuit
TERMINALS or symbol 14 of Table 1 of Part 1 shall be marked as specified in
5.1.5.101.2 and 5.1.5.101.3, if applicable.

NOTE 1 Measuring circuit TERMINALS are usually supplied 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. Some instruments may have a measurement RATED voltage (between TERMINALS)

different from the RATED voltage to earth. Markings should 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

RATING plate or scale plate, or the
(as in multi-input equipment), the marking may be on the
TERMINAL may be marked with symbol 14 of Table 1.

NOTE 2 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 into account the exceptions in 5.1.5.101.4.
5.1.5.101.2 Measuring circuit TERMINALS RATED for MEASUREMENT CATEGORIES II, III
or IV

The relevant MEASUREMENT CATEGORY shall be marked for measuring circuit TERMINALS

RATED for measurements within MEASUREMENT CATEGORIES II, III or IV. The MEASUREMENT

CATEGORY markings shall be “CAT II”, “CAT III” or “CAT IV” as applicable.

NOTE Marking more than one type of MEASUREMENT CATEGORY and its RATED voltage to earth is permissible

(see also 5.1.5.101.1, Note 1).
Conformity is checked by inspection.
---------------------- Page: 14 ----------------------
SIST EN 61010-2-030:2010
61010-2-030 © IEC:2010 – 9 –

5.1.5.101.3 Measuring circuit TERMINALS RATED for connection to voltages above the

level of 6.3.1
Symbol 14 of Table 1 shall be marked for measuring circuit TERMINALS RATED for

connection to voltages above the levels of 6.3.1, but that are not RATED for measurements

within MEASUREMENT CATEGORIES II, III or IV (see also 5.4.1 bb)).
Conformity is checked by inspection.
5.1.5.101.4 Low voltage, permanently connected, or dedicated measuring circuit
TERMINALS
Measuring circuit TERMINALS do not need to be marked if

a) they are intended to be permanently connected and not ACCESSIBLE (see 5.4.3 aa) and

bb)), 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 is below the levels of 6.3.1.

NOTE Examples of acceptable indications that the inputs are intended to be less than 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, is below 33 V a.c.
5.4.1 General
Add new items to the list:

aa) information about each relevant MEASUREMENT CATEGORY if the measuring circuit has

a RATING for MEASUREMENT CATEGORY II, III or IV (see 5.1.5.101.2);

bb) for measuring circuits that do not have a RATING for MEASUREMENT CATEGORY II, III or

IV, but could be misused by connection to such circuits, a warning not to use the

equipment for measurements on MAINS CIRCUITS, and a detailed RATING including
TRANSIENT OVERVOLTAGES (see AA.2.4 for more information).

NOTE Some equipment may have multiple MEASUREMENT CATEGORY RATINGS for the same measuring circuit.

For such equipment, the documentation needs to clearly identify the MEASUREMENT CATEGORIES where the

equipment is intended to be used and where it must not be used.
5.4.3 Equipment installation
Add new items to the list:
aa) for permanently connected measuring circuit TERMINALS RATED for MEASUREMENT
CATEGORIES II, III or IV, information regarding the MEASUREMENT CATEGORY, RATED
maximum WORKING VOLTAGE, and RATED maximum current, as applicable (see
5.1.5.101);
bb) for permanently connected measuring circuit TERMINALS that are not RATED for
MEASUREMENT CATEGORIES II, III or IV, information regarding the RATED maximum
WORKING VOLTAGE, RATED maximum current, and RATED maximum TRANSIENT
OVERVOLTAGES as applicable (see 5.1.5.101).
6 Protection against electric shock
This clause of Part 1 is applicable except as follows:
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SIST EN 61010-2-030:2010
– 10 – 61010-2-030 © IEC:2010
6.1.2 Exceptions
Add a 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):

h) 2) the PROTECTIVE BONDING shall not be interrupted by any switching or interrupting

device. Devices used for indirect bonding in test and measurement circuits (see
6.5.2.101) are permitted to be part of the PROTECTIVE BONDING.
Add a new subclause:
6.5.2.101 Indirect bonding for testing and measuring circuits

Indirect bonding establishes a connection between the PROTECTIVE CONDUCTOR TERMINAL

and ACCESSIBLE conductive parts if these become HAZARDOUS LIVE as a result of a fault.

Devices to establish indirect bonding are:
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
breakdown of the device;
Conformity is checked by connecting the ACCESSIBLE conductive parts to the MAINS
supply TERMINALS while the equipment is connec
...

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