EN 60670-21:2007

SLOVENSKI STANDARD
SIST EN 60670-21:2007
01-september-2007
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Boxes and enclosures for electrical accessories for household and similar fixed electrical
installations -- Part 21: Particular requirements for boxes and enclosures with provision
for suspension means
Dosen und Gehäuse für elektrische Installationsgeräte für Haushalt und ähnliche
ortsfeste elektrische Installationen -- Teil 21: Besondere Anforderungen für Dosen und
Gehäuse mit Aufhängemitteln
Boîtes et enveloppes pour appareillage électrique pour installations électriques fixes
pour usages domestiques et analogues -- Partie 21: Règles particulières concernant les
boîtes et enveloppes avec dispositifs de suspension
Ta slovenski standard je istoveten z: EN 60670-21:2007
ICS:
29.120.99 'UXJDHOHNWULþQDGRGDWQD Other electrical accessories
RSUHPD
SIST EN 60670-21:2007 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60670-21:2007

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SIST EN 60670-21:2007


EUROPEAN STANDARD
EN 60670-21

NORME EUROPÉENNE
June 2007
EUROPÄISCHE NORM

ICS 29.120.99


English version


Boxes and enclosures for electrical accessories
for household and similar fixed electrical installations -
Part 21: Particular requirements for boxes and enclosures
with provision for suspension means
(IEC 60670-21:2004, modified)


Boîtes et enveloppes  Dosen und Gehäuse
pour appareillage électrique für elektrische Installationsgeräte
pour installations électriques fixes für Haushalt und ähnliche ortsfeste
pour usages domestiques et analogues - elektrische Installationen -
Partie 21: Règles particulières Teil 21: Besondere Anforderungen
concernant les boîtes et enveloppes für Dosen und Gehäuse
avec dispositifs de suspension mit Aufhängemitteln
(CEI 60670-21:2004, modifiée) (IEC 60670-21:2004, modifiziert)




This European Standard was approved by CENELEC on 2007-03-01. 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, 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

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60670-21:2007 E

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SIST EN 60670-21:2007
EN 60670-21:2007 – 2 –
Foreword
The text of the International Standard IEC 60670-21:2004, prepared by SC 23B, Plugs,
socket-outlets and switches, of IEC TC 23, Electrical accessories, together with the common
modifications prepared by the Technical Committee CENELEC TC 23B, Switches for household
and similar fixed electrical installations, was submitted to the formal vote and was approved by
CENELEC as EN 60670-21 on 2007-03-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-03-01
This European Standard shall be used in conjunction with EN 60670-1:2005. It lists the changes
necessary to convert that standard into a specific standard for boxes and enclosures with
provision for suspension means.
When a particular subclause of Part 1 is not mentioned in this part, that sublcause applies as far
as reasonable.
In this document, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– notes: in smaller roman type.
Subclauses, figures, tables or notes which are additional to those in Part 1 are numbered
starting from 101, table footnotes additional to those in Part 1 are lettered aa, bb, etc.
Subclauses, figures, tables or notes which are additional to those in IEC 60670-21:2004 are
prefixed 'Z'.
Annex ZB has been added by CENELEC.
____________

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SIST EN 60670-21:2007
– 3 – EN 60670-21:2007
Endorsement notice
The text of the International Standard IEC 60670-21:2004 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
8 Marking
8.1 Delete NOTE 1 and NOTE 2.
10 Protection against electric shock
Replace the text as follows:
This clause of Part 1 is applicable with the following addition.
10.Z101 Metal parts of suspension means inside the enclosure shall either be
– protected by additional insulation complying with tests made by insulating linings or
insulating barriers fixed to the suspension means or to the body of the box or
enclosure,
or
– reliably connected through a low resistance connection to the earthing means
complying with requirements in 11.1 when fitted as for normal use.
15 Mechanical strength
15.101.1 Delete NOTES 1, 2 and 3.

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SIST EN 60670-21:2007
EN 60670-21:2007 – 4 –
Annex ZB
(normative)

Special national conditions
Special national condition: National characteristic or practice that cannot be changed even
over a long period, e.g. climatic conditions, electrical earthing conditions.
NOTE If it affects harmonization, it forms part of the European Standard.
For the countries in which the relevant special national conditions apply these provisions are
normative, for other countries they are informative.
Clause Special national condition
8.1 Denmark
The marking in kg shall reflect a safety factor of 5 times.
8.1 Finland, Norway, Sweden
The marking in kg reflects a safety factor as follows:
- 5 times for boxes with components supporting the load classified according to 7.1.1
or 7.1.3;
- 2,5 times for boxes with components supporting the load classified according to
7.1.2.
15.101.1 Denmark
The force Y corresponds to 5 times the marking in kg as required in 8.1, item k).
15.101.1 Finland, Norway, Sweden
The force Y corresponds to the following marking in kg as required in 8.1, item k):
- 5 times for boxes with components supporting the load classified according to 7.1.1
or 7.1.3;
- 2,5 times for boxes with components supporting the load classified according to
7.1.2.
15.101.1 Netherlands
The test of this clause shall be carried out at (80 ± 2) °C instead of (90 ± 2) °C.
15.101.1 United Kingdom
There is no requirement for all boxes and enclosures for suspension means to withstand
250 N and no requirement for non-metallic boxes and enclosures to withstand 90 °C.
15.101.2 United Kingdom
There is no requirement for all suspension means to withstand 100 N.
_________

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SIST EN 60670-21:2007
NORME CEI
INTERNATIONALE
IEC



60670-21
INTERNATIONAL


Première édition
STANDARD

First edition

2004-04


Boîtes et enveloppes pour appareillage électrique
pour installations électriques fixes
pour usages domestiques et analogues –
Partie 21:
Règles particulières concernant les boîtes
et enveloppes avec dispositifs de suspension

Boxes and enclosures for electrical accessories
for household and similar fixed electrical
installations –
Part 21:
Particular requirements for boxes and enclosures
with provision for suspension means


 IEC 2004 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
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МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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SIST EN 60670-21:2007
60670-21  IEC:2004 – 3 –
CONTENTS
FOREWORD.5

1 Scope.9
2 Normative references.9
3 Definitions.9
4 General requirements.9
5 General notes on tests .9
6 Ratings.9
7 Classification.11
8 Marking.11
9 Dimensions.11
10 Protection against electric shock .11
11 Provision for earthing.11
12 Construction.13
13 Resistance to ageing, protection against ingress of solid objects and against
harmful ingress of water .13
14 Insulation resistance and electric strength .13
15 Mechanical strength.13
16 Resistance to heat.17
17 Creepage distances, clearances and distances through sealing compound .17
18 Resistance of insulating material to abnormal heat and to fire .17
19 Resistance to tracking.17
20 Resistance to corrosion.17
21 Electromagnetic compatibility.17

Figure 101 – Examples of suspension means .19
Figure 102 – Inclined ceiling test .21

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SIST EN 60670-21:2007
60670-21  IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

BOXES AND ENCLOSURES FOR ELECTRICAL ACCESSORIES FOR
HOUSEHOLD AND SIMILAR FIXED ELECTRICAL INSTALLATIONS –

Part 21: Particular requirements for boxes and enclosures
with provision for suspension means


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 Committe
...