Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements

To cover requirements and tests for Boxes and enclosures for electrical accessories for household and similar fixed electrical installations

Dosen und Gehäuse für Installationsgeräte für Haushalt und ähnliche ortsfeste elektrische Installationen - Teil 1: Allgemeine Anforderungen

Boîtes et enveloppes pour appareillage électrique pour installations électriques fixes pour usages domestiques et analogues - Partie 1: Exigences générales

L'IEC 60670-1:2015 s'applique aux boîtes, parties d'enveloppes et enveloppes (ci-après désignées par les termes "boîtes" et "enveloppes") destinées à des appareillages électriques ayant une tension assignée ne dépassant pas 1 000 V en courant alternatif et 1 500 V en courant continu prévus pour des installations électriques fixes à usages domestiques ou analogues, pour l'intérieur ou pour l'extérieur. Cette deuxième édition annule et remplace la première édition parue en 2002 et son Amendement 1:2011. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: révision du Tableau 1 - Classification.

Škatle in ohišja za električno opremo za gospodinjstvo in podobne nepremične električne inštalacije - 1. del: Splošne zahteve

General Information

Status
Published
Publication Date
08-Sep-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
28-Apr-2021
Due Date
03-Jul-2021
Completion Date
09-Sep-2021

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SLOVENSKI STANDARD
SIST EN IEC 60670-1:2021
01-oktober-2021
Nadomešča:
SIST EN 60670-1:2006
SIST EN 60670-1:2006/A1:2013
SIST EN 60670-1:2006/IS1:2009
Škatle in ohišja za električno opremo za gospodinjstvo in podobne nepremične
električne inštalacije - 1. del: Splošne zahteve

Boxes and enclosures for electrical accessories for household and similar fixed electrical

installations - Part 1: General requirements
Dosen und Gehäuse für Installationsgeräte für Haushalt und ähnliche ortsfeste
elektrische Installationen - Teil 1: Allgemeine Anforderungen

Boîtes et enveloppes pour appareillage électrique pour installations électriques fixes

pour usages domestiques et analogues - Partie 1: Exigences générales
Ta slovenski standard je istoveten z: EN IEC 60670-1:2021
ICS:
29.120.99 Druga električna dodatna Other electrical accessories
oprema
SIST EN IEC 60670-1:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN IEC 60670-1:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 60670-1:2021
EUROPEAN STANDARD EN IEC 60670-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 29.120.10 Supersedes EN 60670-1:2005, EN 60670-
1:2005/IS1:2009 and all of its amendments and corrigenda
(if any)
English Version
Boxes and enclosures for electrical accessories for household
and similar fixed electrical installations - Part 1: General
requirements
(IEC 60670-1:2015)

Boîtes et enveloppes pour appareillage électrique pour Dosen und Gehäuse für Installationsgeräte für Haushalt

installations électriques fixes pour usages domestiques et und ähnliche ortsfeste elektrische Installationen - Teil 1:

analogues - Partie 1: Exigences générales Allgemeine Anforderungen
(IEC 60670-1:2015) (IEC 60670-1:2015)

This European Standard was approved by CENELEC on 2020-11-09. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

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

Management Centre or to any CENELEC member.

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

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

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

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60670-1:2021 E
---------------------- Page: 3 ----------------------
SIST EN IEC 60670-1:2021
EN IEC 60670-1:2021 (E)
European foreword

This document (EN IEC 60670-1:2021) consists of the text of IEC 60670-1:2015 prepared by SC 23B

"Plugs, socket-outlets and switches" of IEC/TC 23 "Electrical accessories".
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2021-10-16
national level by publication of an identical national
standard or by endorsement
• latest date by which the national standards conflicting with (dow) 2023-04-09
the document have to be withdrawn

This document supersedes EN 60670-1:2005 and all of its amendments and corrigenda (if any).

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

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

This document has been prepared under a mandate given to CENELEC by the European Commission

and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of

EN IEC 60670-1:2021/A11:2021.
Endorsement notice

The text of the International Standard IEC 60670-1:2015 was approved by CENELEC as a European

Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 60670 (series) NOTE Harmonized as EN 60670 (series)
IEC 60670-21 NOTE Harmonized as EN 60670-21
IEC 60670-22 NOTE Harmonized as EN 60670-22
IEC 60670-23 NOTE Harmonized as EN 60670-23
IEC 60670-24 NOTE Harmonized as EN 60670-24
IEC 62444 NOTE Harmonized as EN 62444
ISO 1456 NOTE Harmonized as EN ISO 1456
ISO 2081 NOTE Harmonized as EN ISO 2081
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SIST EN IEC 60670-1:2021
IEC 60670-1
Edition 2.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Boxes and enclosures for electrical accessories for household and similar fixed
electrical installations –
Part 1: General requirements
Boîtes et enveloppes pour appareillage électrique pour installations électriques
fixes pour usages domestiques et analogues –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.10 ISBN 978-2-8322-2337-6

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: 5 ----------------------
SIST EN IEC 60670-1:2021
– 2 – IEC 60670-1:2015 © IEC 2015
CONTENTS

FOREWORD ........................................................................................................................... 5

1 Scope .............................................................................................................................. 7

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

3 Terms and definitions ...................................................................................................... 8

4 General requirements .................................................................................................... 11

5 General notes on tests .................................................................................................. 11

6 Ratings .......................................................................................................................... 11

7 Classification ................................................................................................................. 12

8 Marking ......................................................................................................................... 13

9 Dimensions.................................................................................................................... 14

10 Protection against electric shock ................................................................................... 14

11 Provision for earthing .................................................................................................... 15

11.1 Boxes and enclosures with exposed conductive parts ........................................... 15

11.2 Boxes and enclosures of insulating material classified according to 7.2.2.2

and 7.2.2.3 ........................................................................................................... 16

11.3 Boxes or enclosures with removable sides according to 7.1.2 ............................... 17

11.4 Earthing terminal threads ...................................................................................... 17

12 Construction .................................................................................................................. 18

12.1 General ................................................................................................................. 18

12.2 Lids, covers or cover-plates or parts of them ......................................................... 18

12.2.1 General ......................................................................................................... 18

12.2.2 Screw-type fixing ........................................................................................... 18

12.2.3 Non-screw-type fixing operable without the use of a tool or a key .................. 18

12.2.4 Non screw-type fixing operable with the use of a tool or a key ....................... 24

12.3 Drain holes ........................................................................................................... 25

12.4 Mounting of enclosures ......................................................................................... 25

12.5 Boxes and enclosures with inlets for flexible cables .............................................. 25

12.6 Boxes and enclosures with inlets for applications other than flexible cables .......... 25

12.7 Boxes and enclosures with a cable anchorage(s) .................................................. 26

12.8 Boxes and enclosures with cable retention means ................................................ 27

12.9 Knock-outs intended to be removed by mechanical impact .................................... 28

12.9.1 General ......................................................................................................... 28

12.9.2 Knock-out retention ....................................................................................... 28

12.9.3 Knock-out removal ......................................................................................... 28

12.9.4 Flat surfaces surrounding knock-outs ............................................................ 29

12.10 Screw fixings ........................................................................................................ 29

12.11 Fixing of boxes and enclosures classified according to 7.2.1 ................................. 30

12.12 Fixing of flush type and semi-flush type boxes and enclosures classified

according to 7.2.2.1 .............................................................................................. 33

12.13 Boxes and enclosures classified according to 7.2.2.2 and 7.2.2.3 ......................... 34

12.13.1 General ......................................................................................................... 34

12.13.2 Boxes intended for mounting on a wood structural member of a wall ............. 35

12.13.3 Boxes intended for mounting to a wooden structural member of a ceiling ....... 35

12.13.4 Boxes intended for mounting to a steel-stud structural member of a wall ....... 35

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SIST EN IEC 60670-1:2021
IEC 60670-1:2015 © IEC 2015 – 3 –
12.13.5 Internal volume of boxes and enclosures classified according to 7.2.2.2

and 7.2.2.3 .................................................................................................... 36

12.13.6 Boxes intended for mounting in a finished structure ....................................... 37

12.14 Cable gland entry .................................................................................................. 37

12.15 Boxes and enclosures with inlets (outlets) or spouts (hubs) for conduits ............... 38

12.16 Internal volume of boxes and enclosures .............................................................. 38

13 Resistance to ageing, protection against ingress of solid objects and against

harmful ingress of water ................................................................................................ 39

13.1 Resistance to ageing ............................................................................................ 39

13.2 Protection against the ingress of solid objects ....................................................... 41

13.3 Protection against harmful ingress of water ........................................................... 42

14 Insulation resistance and electric strength ..................................................................... 47

15 Mechanical strength ...................................................................................................... 49

15.1 General ................................................................................................................. 49

15.2 Impact test at low temperature .............................................................................. 49

15.3 Compression test .................................................................................................. 50

15.4 Impact test for boxes and enclosures .................................................................... 51

15.5 Compression test for enclosures made of natural or synthetic rubber or a

mixture of both ...................................................................................................... 56

16 Resistance to heat ......................................................................................................... 58

16.1 Parts of insulating material necessary to retain current-carrying parts ................... 58

16.2 Parts of insulating material not necessary to retain current-carrying parts ............. 59

16.3 Boxes and enclosures of insulating materials classified according to 7.2.2.2

or 7.2.2.3 .............................................................................................................. 59

16.3.1 Mechanical strength....................................................................................... 59

16.3.2 Parts of insulating material necessary to retain parts of the earthing

circuit ............................................................................................................ 60

17 Creepage distances, clearances and distances through sealing compound .................... 60

18 Resistance of insulating material to abnormal heat and fire ........................................... 61

19 Resistance to tracking ................................................................................................... 63

20 Resistance to corrosion ................................................................................................. 63

21 Electromagnetic compatibility (EMC) ............................................................................. 63

Annex A (informative) Examples of enclosures and parts thereof ......................................... 64

Bibliography .......................................................................................................................... 65

Figure 1 – Examples of membranes and grommets ............................................................... 10

Figure 2 – Demonstration of the non-penetration of the internal volume ................................ 15

Figure 3 – Earthing strap ...................................................................................................... 16

Figure 4 – Test strap ............................................................................................................. 17

Figure 5 – Arrangement for test on covers or cover-plates (see 12.2.3.2 and 12.2.3.3) ........ 20

Figure 6 – Gauge for the verification of the outline of lids, covers or cover-plates ................ 21

Figure 7 – Examples of application of the gauge of Figure 6 on covers fixed without

screws on a mounting surface or supporting surface ............................................................. 22

Figure 8 – Compliance criteria of application of the gauge of Figure 6 .................................. 23

Figure 9 – Gauge for verification of grooves, holes and reverse tapers ................................ 24

Figure 10 – Sketch showing the direction of application of the gauge of Figure 9 ................. 24

Figure 11 – Apparatus for testing the cable anchorage ......................................................... 27

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SIST EN IEC 60670-1:2021
– 4 – IEC 60670-1:2015 © IEC 2015

Figure 12 – Example of mounting block for boxes to be embedded in masonry (flush

type and semi-flush type) ...................................................................................................... 32

Figure 13 – Example of the fixing of the auxiliary device mounted on a specimen ................ 32

Figure 14 – Example of test apparatus for the test ................................................................ 33

Figure 15 – Verification of fixing means for boxes and enclosures classified according

to 7.2.2.1 .............................................................................................................................. 34

Figure 16 – Test of the force and measurement of the displacement ..................................... 36

Figure 17 – Volume measurement......................................................................................... 39

Figure 18 – Reference surfaces for boxes and enclosures .................................................... 43

Figure 19 – Test wall ............................................................................................................ 45

Figure 20 – Example of the protected volume ....................................................................... 47

Figure 21 – Apparatus for impact test at low temperature...................................................... 50

Figure 22 – Mounting block for flush-type boxes and enclosures in order to apply

blows on the rear surface ...................................................................................................... 52

Figure 23 – Sequence of blows for parts A, B, C, D, E, F and G ............................................ 55

Figure 24 – Test devices for load compression test for enclosures made of natural or

synthetic rubber or a mixture of both. .................................................................................... 58

Figure 25 – Rigid crossbar .................................................................................................... 60

Figure 26 – Diagrammatic representation of the glow-wire test ............................................ 62

Figure A.1 – Examples of enclosures and parts thereof......................................................... 64

Table 1 – Classification of boxes and enclosures (1 of 2) ...................................................... 12

Table 2 – Forces to be applied to lids, covers, cover-plates or actuating members

whose fixing is not dependent on screws .............................................................................. 19

Table 3 – Forces and torques to be applied to cable anchorages .......................................... 26

Table 4 – Tightening torques for the verification of the mechanical strength of screws .......... 30

Table 5 – Torque test values for cable glands ....................................................................... 38

Table 6 – Test voltage for electric strength test ..................................................................... 48

Table 7 – Determination of parts A, B, C, D E, F and G ......................................................... 52

Table 8 – Height of fall for impact test ................................................................................... 53

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SIST EN IEC 60670-1:2021
IEC 60670-1:2015 © IEC 2015 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
BOXES AND ENCLOSURES FOR ELECTRICAL ACCESSORIES FOR
HOUSEHOLD AND SIMILAR FIXED ELECTRICAL INSTALLATIONS –
Part 1: General requirements
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 60670-1 has been prepared by subcommittee SC 23B: Plugs,

socket-outlets and switches, of IEC technical committee 23: Electrical accessories.

This second edition cancels and replaces the first edition published in 2002 and its

Amendment 1:2011. This edition constitutes a technical revision.

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

edition: Review of classification Table 1.
---------------------- Page: 9 ----------------------
SIST EN IEC 60670-1:2021
– 6 – IEC 60670-1:2015 © IEC 2015
The text of this standard is based on the following documents:
FDIS Report on voting
23B/1176/FDIS 23B/1184/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

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

In this publication, the following print types are used:
In this standard, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matter: in smaller roman type.

A list of all parts in the IEC 60670 series, published under the general title Boxes and

enclosures for electrical accessories for household and similar fixed electrical installations

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 website 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: 10 ----------------------
SIST EN IEC 60670-1:2021
IEC 60670-1:2015 © IEC 2015 – 7 –
BOXES AND ENCLOSURES FOR ELECTRICAL ACCESSORIES FOR
HOUSEHOLD AND SIMILAR FIXED ELECTRICAL INSTALLATIONS –
Part 1: General requirements
1 Scope

This part of IEC 60670 applies to boxes, enclosures and parts of enclosures (hereafter called

“boxes” and “enclosures”) for electrical accessories with a rated voltage not exceeding

1 000 V a.c. and 1 500 V d.c. intended for household or similar fixed electrical installations,

either indoors or outdoors.

Boxes and enclosures complying with this standard are suitable for use at ambient

temperatures not normally exceeding +40 °C, but their average over a period of 24 h does not

exceed +35 °C, with a lower limit of the ambient air temperature of −5 °C.

During the installation the temperature may be outside the above temperature range

according to the classification of the boxes and the enclosures.

This International Standard is intended to apply to boxes and enclosures for electrical

accessories within the scope of IEC technical committee 23.

This standard may be used as a reference document for other IEC technical committees and

subcommittees.

A box or an enclosure which is an integral part of an electrical accessory and provides

protection for that accessory against external influences (for example mechanical impact,

ingress of solid objects or water, etc.) is covered by the relevant standard for such an

accessory.
This standard does not apply to
– ceiling roses;
– luminaire supporting couplers;

– boxes, enclosures and parts of enclosures specifically designed to be used for cable

trunking and ducting systems complying with IEC 61084 and which are not intended to be

installed outside of these systems.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and

are indispensable for its application. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any
amendments) applies.

IEC 60068-2-75:1997 , Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests

___________

First edition. This edition has been replaced in 2014 by IEC 60068-2-75:2014, Environmental testing – Part 2-

75: Tests – Test Eh: Hammer tests
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SIST EN IEC 60670-1:2021
– 8 – IEC 60670-1:2015 © IEC 2015

IEC 60112:2003, Method for the determination of the proof and the comparative tracking

indices of solid insulating materials

IEC 60423:2007, Conduit systems for cable management – Outside diameters of conduits for

electrical installations and threads for conduits and fittings
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)

IEC 60529:1989/AMD1:1999/AMD2:2013, Degrees of protection provided by enclosures (IP

Code)

IEC 60695-2-11:2000 , Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods

– Glow-wire flammability test method for end-products

IEC 60695-10-2:2003 , Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test

IEC 60981:2004, Extra-heavy duty rigid steel conduits

IEC 61032:1997, Protection of persons and equipment by enclosures – Probes for verification

IEC 61140:2001, Protection against electric shock – Common aspects for installation and

equipment
IEC 61140:2001/AMD1:2004, Protection against electric shock – Common aspects for
installation and equipment
ISO/IEC Guide 51, Safety aspects – Guidelines for their inclusion in standards
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
enclosure

combination of parts, such as boxes, covers, cover-plates, lids, box extensions, accessories,

etc., providing after assembly and installation as in normal use, an appropriate protection

against external influences, and a defined protection against contact with enclosed live parts

from any accessible direction
Note 1 to entry: See Annex A.
3.2
box

part of an enclosure provided with means for fixing a cover, cover-plate, accessory, etc., and

intended to receive accessories (such as socket-outlets, switches, etc.)
3.3
box extension
part of an enclosure which is intended to extend a box for the purpos
...

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