SIST EN 60670-1:2006/A1:2013
(Amendment)Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements (IEC 60670-1:2002/A1:2011, modified)
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 1: General requirements (IEC 60670-1:2002/A1:2011, modified)
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. NOTE Requirements for particular types of boxes and enclosures are given in the relevant parts 2 of IEC 60670. Boxes and enclosures complying with this standard are suitable for use at ambient temperature not normally exceeding 25 °C but occasionally reaching 35 °C. This International Standard is intended to apply to boxes and enclosures for electrical accessories within the scope of IEC technical committee 23. NOTE This standard may also 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.
Dosen und Gehäuse für Installationsgeräte für Haushalt und ähnliche ortsfeste elektrische Installationen - Teil 1: Allgemeine Anforderungen (IEC 60670-1:2002/A1:2011, modifiziert)
Boîtes et enveloppes pour appareillage électrique pour installations électriques fixes pour usages domestiques et analogues - Partie 1: Règles générales (IEC 60670-1:2002/A1:2011, modifié)
Škatle in ohišja za električno opremo za gospodinjstvo in podobne nepremične električne inštalacije - 1. del: Splošne zahteve (IEC 60670-1:2002/A1:2011, spremenjen)
Ta del standarda IEC 60670 se uporablja za škatle, ohišja in dele ohišij (v nadaljnjem besedilu »škatle« in »ohišja«) za električno opremo z nazivno napetostjo, ki ne presega izmenične napetosti 1000 V in enosmerne napetosti 1500 V in je namenjena uporabi v gospodinjstvu ali podobnih zunanjih ali notranjih nepremičnih električnih inštalacijah. OPOMBA Zahteve za posebne vrste škatel in ohišij so podane v ustreznih 2. delih standarda IEC 60670. Škatle in ohišja, ki so skladna s tem standardom, so primerna za uporabo pri temperaturi okolja, ki običajno ne presega 25 °C, vendar občasno lahko doseže 35 °C. Ta mednarodni standard je namenjen uporabi s škatlami in ohišji za električne pripomočke na področju uporabe tehničnega odbora IEC 23. OPOMBA Ta dokument se lahko uporablja kot referenčni dokument za druge tehnične odbore in pododbore IEC. Škatla ali ohišje, ki je sestavni del električne opreme in ji nudi zaščito pred zunanjimi vplivi (npr. mehanskim udarcem, vdorom trdnih predmetov ali vode itd.), je vključeno v ustrezni standard, ki obravnava tovrstno opremo.
Ta standard se ne uporablja za:
– stropne rozete;
– spojke za podporo svetilki;
– škatle, ohišja in dele ohišja, ki so izdelani posebej za uporabo s sistemi kabelskih korit in jaškov, ki so v skladu s standardom IEC 61084 in niso namenjeni namestitvi zunaj teh sistemov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60670-1:2006/A1:2013
01-junij-2013
âNDWOHLQRKLãMD]DHOHNWULþQRRSUHPR]DJRVSRGLQMVWYRLQSRGREQHQHSUHPLþQH
HOHNWULþQHLQãWDODFLMHGHO 6SORãQH]DKWHYH ,(& $
VSUHPHQMHQ
Boxes and enclosures for electrical accessories for household and similar fixed electrical
installations - Part 1: General requirements (IEC 60670-1:2002/A1:2011, modified)
Dosen und Gehäuse für Installationsgeräte für Haushalt und ähnliche ortsfeste
elektrische Installationen - Teil 1: Allgemeine Anforderungen (IEC 60670-
1:2002/A1:2011, modifiziert)
Boîtes et enveloppes pour appareillage électrique pour installations électriques fixes
pour usages domestiques et analogues - Partie 1: Règles générales (IEC 60670-
1:2002/A1:2011, modifié)
Ta slovenski standard je istoveten z: EN 60670-1:2005/A1:2013
ICS:
29.120.99 'UXJDHOHNWULþQDGRGDWQD Other electrical accessories
RSUHPD
SIST EN 60670-1:2006/A1:2013 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60670-1:2006/A1:2013
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SIST EN 60670-1:2006/A1:2013
EUROPEAN STANDARD
EN 60670-1/A1
NORME EUROPÉENNE
April 2013
EUROPÄISCHE NORM
ICS 29.120.10
English version
Boxes and enclosures for electrical accessories for household and similar
fixed electrical installations -
Part 1: General requirements
(IEC 60670-1:2002/A1:2011, modified)
Boîtes et enveloppes pour appareillage Dosen und Gehäuse für
électrique pour installations électriques Installationsgeräte für Haushalt und
fixes pour usages domestiques et ähnliche ortsfeste elektrische
analogues - Installationen -
Partie 1: Règles générales Teil 1: Allgemeine Anforderungen
(CEI 60670-1:2002/A1:2011, modifié) (IEC 60670-1:2002/A1:2011, modifiziert)
This amendment A1 modifies the European Standard EN 60670-1:2005; it was approved by CENELEC on 2012-
12-31. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
the conditions for giving this amendment 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 amendment 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, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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
© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60670-1:2005/A1:2013 E
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SIST EN 60670-1:2006/A1:2013
EN 60670-1:2005/A1:2013 - 2 -
Contents Page
Foreword . 3
7 Classification . 4
8 Marking . 4
10 Protection against electric shock . 4
11 Provision for earthing . 4
12 Construction . 4
13 Resistance to ageing, protection against ingress of solid objects and against harmful
ingress of water . 6
15 Mechanical strength . 6
16 Resistance to heat . 6
Figures . 6
Annex ZA (normative) Normative references to international publications with their
corresponding European publications . 10
Annex ZB (normative) Special national conditions . 11
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SIST EN 60670-1:2006/A1:2013
- 3 - EN 60670-1:2005/A1:2013
Foreword
This document (EN 60670-1:2005/A1:2013) consists of the text of IEC 60670-1:2002/A1:2011 prepared
by IEC/SC 23B "Plugs, socket-outlets and switches" of IEC/TC 23 "Electrical accessories", together with
the common modifications prepared by CLC/TC 23BX "Switches, boxes and enclosures for household
and similar purposes, plugs and socket outlets for d.c. and for the charging of electrical vehicles including
their connectors".
The following dates are fixed:
(dop) 2013-12-31
• latest date by which this document has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dow) 2017-12-31
• latest date by which the national standards conflicting
with this document have to be withdrawn
Annexes which are additional to those in IEC 60670-1:2002/A1:2011 are prefixed “Z”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed
for Use within Certain Voltage Limits (LVD - 2006/95/EC).
Endorsement notice
The text of the International Standard IEC 60670-1:2002/A1:2011 was approved by CENELEC as a
European Standard with agreed common modifications
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SIST EN 60670-1:2006/A1:2013
EN 60670-1:2005/A1:2013 - 4 -
COMMON MODIFICATIONS
7 Classification
Table 1
The IEC modification is not applicable.
8 Marking
8.1 The IEC modification is not applicable.
Add the following:
nd
Replacement of the 2 sentence of item d) by:
When the declared IP code is higher than IP4X or higher than IPX2 it shall be on the outside of the enclosure so as to
be easily discernible when the enclosure is mounted and wired as for normal use.
8.2 The IEC modification is not applicable.
10 Protection against electric shock
Replace of the last sentence by:
The probe is applied to all places, where yielding of insulating material could impair the safety, with a
force of 75 N except membranes, grommets, knock-outs and the like.
Add the following note:
NOTE Knock-outs are tested according to 12.8.2.
11 Provision for earthing
11.2 The IEC modification is not applicable.
12 Construction
12.1.2 Replace three times “test probe A” by “test probe B”.
Replace in Table 2 “test finger” by “test probe B of EN 61032”.
nd
12.3 Add the following after the 2 paragraph:
In case there is a cavity, the head of the screw can be protected by an additional cap of insulating
material. In this case the manufacturers instruction shall give information concerning the cap to be used.
In case there is no cavity the head of the screw shall be protected with a cap of insulating material in this
case, the cap shall be delivered with the box.
The cap shall stay in position during normal use.
Compliance is checked by the following test.
The caps are fixed to the boxes according to the manufacturer’s instructions and subjected to the ageing
test of 13.1.
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SIST EN 60670-1:2006/A1:2013
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After 1 h, the boxes are then turned to a position with the opening in the direction of the floor.
The cap shall not come detached.
12.5 The IEC modification is not applicable.
12.8 Replacement of the title by:
12.8 Knock-outs
12.8.1 General
st nd rd
Replacement of the 1 , 2 , 3 paragraphs by:
It shall be possible to remove knock-outs without damaging the box.
Knock-outs intended for use with cables shall be free from chips or burrs.
knock-outs intended for use with conduits and/or a grommet or a membrane, chips and burrs are
disregarded.
th
Replacement of the 7 paragraph by:
This requirement does not apply to a blanking-plug which is assembled by threading into a threaded inlet.
st
12.8.4 Replacement of the 1 paragraph by
Knock-outs intended for the use of grommets, glands or fittings shall be located in flat surfaces to permit
grommets, glands or fittings to be placed fully against these surfaces when installed as intended.
12.9 The IEC modification is not applicable.
rd
Addition before the 3 paragraph of the following:
Screws or other fixing means made from insulating material similar to screws without standardised thread
which have to be tightened by any tool for fixing covers shall be tested according to the manufacturer’s
instructions ( e.g. torque value which could be different from Table 4 , nature of the tool,….).
12.10 The IEC title is not applicable.
Replacement of 'Figure Z1', 'Figure Z2' and 'Figure Z3' by 'Figure 22', 'Figure 23' and 'Figure 24'
respectively.
st
12.11 Replacement of the title and the 1 sentence by:
12.11 Boxes and enclosures classified according to 7.2.1.3
Boxes and enclosures for hollow walls classified according to 7.2.1.3 shall provide suitable means for
fixing the box or the enclosure to hollow walls.
12.13 The IEC modification is not applicable.
12.14 The IEC modification is not applicable.
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SIST EN 60670-1:2006/A1:2013
EN 60670-1:2005/A1:2013 - 6 -
13 Resistance to ageing, protection against ingress of solid objects and against
harmful ingress of water
13.2 The IEC modification is not applicable.
15 Mechanical strength
15.2 Renumber reference 15.2.1 into 15.2.
16 Resistance to heat
16.3 The IEC modification is not applicable.
Figures
Figure 4 – The IEC modification is not applicable.
Figure 19 – The IEC modification is not applicable.
Replacement of Figures Z1, Z2 and Z3 by Figures 22, 23 and 24:
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SIST EN 60670-1:2006/A1:2013
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Key
1) specimen
2) plaster
3) block of wood
(*) The gap between the main external profile of the box and the internal profile of the receptacle shall be at least
20 mm, and for parts which project from the main profile never less than 10 mm.
Figure 22 – Example of mounting block for boxes to be embedded in masonry
(flush type and semi-flush type) according to 12.10
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SIST EN 60670-1:2006/A1:2013
EN 60670-1:2005/A1:2013 - 8 -
Key
1) auxiliary device
2) specimen
Figure 23 – Example of the fixing of the auxiliary device mounted
on a specimen according to 12.10
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SIST EN 60670-1:2006/A1:2013
- 9 - EN 60670-1:2005/A1:2013
45°
Key
1) supplementary weight (SW)
2) principal weight (PW)
3) carrier (C)
4) mounting plate (A)
Figure 24 – Example of test apparatus for the test according to 12.10
Replacement of the title of Figure 25 by
Figure 25 – Example of the protected volume (see 13.3.4)
Replacement of the title of Figure 26 by
Figure 26 – Demonstration of the non-penetration of the internal volume (see Clause 10)
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SIST EN 60670-1:2006/A1:2013
EN 60670-1:2005/A1:2013 - 10 -
Annex ZA
(normative)
Normative references to international publications with their
corresponding European publications
Add the following new reference to the Annex ZA of EN 60670-1:2005:
Publication Year Title EN/HD Year
IEC 62444 2010 Cable glands for electrical installations - -
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Annex ZB
(normative)
Special national conditions
Clause Special national condition
Add the following to Annex ZB of EN 60670-1:2005:
8.1 United Kingdom
Add after (e):
The marking of the type reference is not used.
12.7 Germany
A cable retention is required for boxes and enclosures for hollow walls due to
installation practices.
12.7 Denmark
A cable retention is required for boxes and enclosures for hollow walls due to
installation practices.
13.2 Germany
A minimum protection degree of IP30 is required for boxes and enclosures for hollow
walls due to installation practices.
13.2 Norway
A minimum protection degree of IP30 is required for boxes and enclosures for hollow
walls due to installation practices.
13.2 Denmark
A minimum protection degree of IP30 is required for boxes and enclosures for hollow
walls due to installation practices.
Replace SNC for United Kingdom 12.9 by the following:
12.9 United Kingdom
With the exception of products within the scope of EN 60670-22 or EN 60670-23,
boxes shall be provided with metal threads so as to ensure safety and thread-forming
or thread-cutting screws shall not be used.
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SIST EN 60670-1:2006/A1:2013
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SIST EN 60670-1:2006/A1:2013
IEC 60670-1
®
Edition 1.0 2011-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
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: Règles générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE PRICE CODE
T
CODE PRIX
ICS 29.120.10 ISBN 978-2-88912-390-2
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 60670-1:2006/A1:2013
– 2 – 60670-1 Amend. 1 IEC:2011
FOREWORD
This amendment has been prepared by subcommittee 23B: Plugs, socket-outlets and
switches, of IEC technical committee 23: Electrical accessories.
The text of this amendment is based on the following documents:
FDIS Report on voting
23B/981/FDIS 23B/991/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
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.
______________
CONTENTS
Add, in the list of contents, the following new titles:
11.3 Boxes or enclosures with removable sides according to 7.1.2
11.4 Earthing terminal threads
Replace the title of Subclause 12.1.3 by the following new title:
12.1.3 Non screw-type fixing operable with the use of a tool or a key
Replace the titles of Subclause 12.8 by the following:
12.8 Knock-outs intended to be removed by mechanical impact
12.8.1 General
12.8.2 Knock-out retention
12.8.3 Knock-out removal
12.8.4 Flat surfaces surrounding knock-outs
Replace the title of Subclause 12.10 by the following:
12.10 Fixing of boxes and enclosures classified according to 7.2.1.1 and 7.2.1.2
Replace the title of Subclause 12.12 by the following:
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SIST EN 60670-1:2006/A1:2013
60670-1 Amend. 1 IEC:2011 – 3 –
12.12 Fixing of boxes and enclosures classified according to 7.7.2
Add the following new titles:
12.15 Internal volume of boxes and enclosures
16.3.1 Mechanical strength
16.3.2 Parts of insulating material necessary to retain parts of the earthing circuit
Replace the title of Figure 4 by the following:
Figure 4 – Volume measurement (see 12.15)
Replace the title of Figure 5 by the following:
Figure 5 – Test wall (see 13.3.2)
Replace the title of Figure 7 by the following:
Figure 7 – Mounting block for flush type boxes and enclosures in order to apply blows
on the rear surface (See 15.3)
Replace the title of Figure 9 by the following:
Figure 9 – Height of fall for blows for part A ( See 15.3)
Replace the title of Figure 19 by the following:
Figure 19 – Test according to 12.12.3
Add the following new titles:
Figure 22 – Example of mounting block for boxes to be embedded in masonry (flush
type and semi-flush type) according to 12.10
Figure 23 – Example of the fixing of the auxiliary device mounted on a specimen
according to 12.10
Figure 24 – Example of test apparatus for the test according to 12.10
Figure 25 – Example of the protected volume (See 13.3.4)
Figure 26 – Demonstration of the non-penetration of the internal volume
2 Normative references
Add the following new reference:
IEC 62444:2010, Cable glands for electrical installations
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SIST EN 60670-1:2006/A1:2013
– 4 – 60670-1 Amend. 1 IEC:2011
3 Definitions
3.10
cable gland
Replace the definition of 3.10 by the following:
a device designed to permit the entry of a cable, flexible cable or insulated conductor into an
enclosure, and which provides sealing and retention. It may also provide other functions such
as earthing, bonding, insulation, cable guarding, strain relief or a combination of these
Add the following new definition after Definition 3.19:
3.20
blanking-plug
a blanking-plug is a component used to close an open inlet or an open knock out
Table 1 – Classification of boxes and enclosures
Add the following new row after the row concerning 7.7:
7.8 The provision for fixing 7.8.1 Boxes supplied with
accessories to boxes screws
7.8.2 Boxes intended to receive
screws
7.8.3 Boxes intended to receive
claws
7.8.4 Boxes intended to receive
other means
8 Marking
8.1
Move item e) after the third paragraph, before the paragraph commencing with “The following
information.”.
Add the following NOTE after 8.1 e):
NOTE In the following country the marking of the type reference is not used: UK.
Replace the reference to 12.12.5 in 8.1i) by 12.15.
8.2
Replace NOTE 1 by the following:
NOTE 1Marking made by moulding, pressing or engraving is considered durable and is therefore not subjected to
this test.
10 Protection against electric shock
Replace the existing text by the following:
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SIST EN 60670-1:2006/A1:2013
60670-1 Amend. 1 IEC:2011 – 5 –
Boxes and enclosures shall be so designed that, when they are assembled, equipped and
installed as for normal use in accordance with the manufacturer's instructions, live parts are
not accessible.
Where enclosures are supplied without a cover, cover-plate or an accessory they are tested
with the appropriate parts fitted according to the information given in the manufacturer's
instructions.
Compliance is checked by inspection and in case of doubt by the following test.
Enclosures shall be tested with test probe 11 according to IEC 61032 applied for 1 min with a
force of 20 N, and the test probe shall not penetrate in the internal volume of the enclosure,
as shown in Figure 26.
Tests shall be carried out on parts which are accessible after installation.
In addition, all enclosures according to 7.1.1 and 7.1.3 with parts made of thermoplastic or
elastomeric material shall be subjected for 1 min to a force applied through the tip of test
probe 11 of IEC 61032 but at an ambient temperature of (35 ± 2) °C, the enclosure being at
this temperature.
The probe is applied to all places except membranes or the like, where yielding of insulating
material could impair the safety, with a force of 75 N.
11 Provision for earthing
Replace Subclauses 11.1 and 11.2 by the following:
11.1 Boxes and enclosures with exposed conductive parts
Boxes and enclosures with exposed conductive parts shall be provided with an earthing
means of low resistance or have provision for the fitting of such an earthing means. For the
purpose of this requirement, small screws and the like, for fixing bases, covers or coverplates,
etc. isolated from live parts, are not considered as exposed conductive parts.
The earthing means or the provision for the fitting of such an earthing means shall be located
so that:
– the means is readily accessible through the open face of the box, and
– the removal of an accessory mounted in the box does not disturb the continuity of the
earthing circuit, and
– the means is not part of a removable cover, back, or side of the box or enclosure.
Compliance is checked by inspection.
Exposed conductive parts of covers or cover-plates shall be connected through a low
resistance connection to the earthing means when fitted as for normal use.
Compliance is checked by the following test.
A current derived from an a.c. source having a no-load voltage not exceeding 12 V and equal
to (25 ± 1) A is passed between the earthing terminal and each exposed conductive part in
turn. The voltage drop between the earthing terminal and each of the exposed conductive
parts is measured, and the resistance calculated from the current and this voltage drop.
In no case shall the resistance exceed 0,05 Ω.
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– 6 – 60670-1 Amend. 1 IEC:2011
NOTE 1 Care should be taken that the contact resistance between the tip of the measuring probe and the
exposed conductive part under test does not influence the test results.
NOTE 2 In insulating boxes and enclosures having an IP degree higher than IPX0, provisions can be made for the
addition of means for the effective continuity of the earthing conductor, when more than one inlet is provided.
11.2 Boxes and enclosures of insulating material classified according to 7.7.2
Boxes and enclosures of insulating material shall be provided with a minimum of one earthing
strap having one screw terminal for earthing purposes with a connecting capacity of at least
2
4 mm . The design of the earthing strap shall ensure that the metal mounting yokes of
accessories mounted inside the box and metallic covers mounted on the box are connected to
the earthing conductors (see Figure 2).
Compliance is checked by inspection.
The earthing strap shall be securely fastened to the box or enclosure.
Compliance is checked by the test in 16.3.2.
Add the following new Subclauses 11.3 and 11.4 after Subclause 11.2:
11.3 Boxes or enclosures with removable sides according to 7.1.2
A box or enclosure classified according to 7.1.2 that has removable sides shall be constructed
so that the electrical bond between separable parts includes at least one threaded screw
connection.
Compliance is checked by inspection.
11.4 Earthing terminal threads
The threads of the earthing terminal delivered with or integrated in boxes and enclosures shall
not be stripped when the torque shown in the relevant column of Table 4 is applied.
Compliance is checked by inspection and by the following test.
The screws are tightened and loosened 5 times.
The test is made by using a suitable screwdriver or an appropriate tool applying a torque as
indicated in Table 4.
If a screw has a hexagonal head with a slot, only the test with the screwdriver is made, with
the relevant torque given in column II of Table 4.
Greater values of torque may be used if so stated by the manufacturer, when the relevant
information is provided.
Column I applies to screws which cannot be tightened by means of a screwdriver with a blade
wider than the nominal diameter of the thread of the screw.
Column II applies to other screws which are tightened by means of a screwdriver.
Column III applies to screws and nuts which are tightened by means other than a screwdriver.
Column IV applies to screws which are tightened by means of a square blade screwdriver.
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SIST EN 60670-1:2006/A1:2013
60670-1 Amend. 1 IEC:2011 – 7 –
During the test, there shall be no damage, such as breakage of screw or damage to the head
slot (rendering the use of the appropriate screwdriver impossible) or to the threads or to the
enclosure impairing the further use of the fixing means. The screws shall not be tightened in
jerks.
12 Construction
Add the following new text at the beginning of Clause 12:
Boxes and enclosures shall be constructed without sharp edges. Burrs shall be removed from
mould lines of interior surfaces so that there are no sharp edges or undue obstructions to the
passage of wiring or coupling of parts in the intended use of the product.
The inner and outer surfaces of a box or cover shall not be subject to peeling, scaling or
flaking and shall be smooth and free from blisters, cracks, and other defects.
Compliance is checked by inspection.
12.1 Lids, covers or cover-plates or parts of them
Replace the first paragraph by the following:
Lids, covers, or cover-plates or parts of them, such as protective membranes, which are
intended to ensure protection against electric shock, shall be held in place effectively.
12.1.1 Screw-type fixing
Replace Subclause 12.1.1 by the following:
A box or enclosure intended to accept a lid, cover, or cover plate by means of screw fixing
shall be provided with means to accommodate the intended screws.
For lids, covers or cover plates whose fixing is of the screw type, compliance is checked by
inspection.
Table 2
Replace Table 2 by the following:
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SIST EN 60670-1:2006/A1:2013
– 8 – 60670-1 Amend. 1 IEC:2011
Table 2 – Forces to be applied to covers, cover-plates or actuating members
whose fixing is not dependent on screws
Force to be applied
N
Accessibility with the test finger after
Enclosures complying Enclosures not complying
removal of lids, covers or cover-plates
with 12.1.2.3 and 12.1.2.4 with 12.1.2.3 and 12.1.2.4
or parts of them
shall not shall come shall not shall come
come off off* come off off*
To live parts 40 120 80 120
To non-earthed conductive parts separated from
10 120 20 120
live parts by basic insulation
To insulating parts, or earthed conductive parts, or
conductive parts separated from live parts by
10 120 10 120
double or reinforced insulation or live parts of
SELV ≤ 25 V a.c. or 60 V d.c.
* These columns do not apply for 12.1.3.
12.1.3 Other fixings
Replace Subclause 12.1.3 by the following:
12.1.3 Non screw-type fixing operable with the use of a tool or a key
For lids, covers or cover-plates whose fixing is not dependent on screws and whose removal
is obtained by using a tool and/or a key, in accordance with the manufacturer's instructions,
compliance is checked by the same tests of 12.1.2 except that the lids, covers or coverplates,
or parts of them need not come off when applying a force not exceeding 120 N in directions
perpendicular to the mounting/supporting surface.
12.3 Mounting of enclosures
Replace the second paragraph of Subclause 12.3 by the following:
Enclosures of insulating material shall be constructed in such a way that any conductive parts
of fixing means inside the box or enclosure intended to be used for mounting the enclosure
are surrounded by insulation which projects above the top of the fixing means by an amount
of not less than 10 % of the maximum width of the cavity for the fixing means.
12.4 Boxes and enclosures with inlets for flexible cables
Replace Subclause 12.4 by the following:
Inlets (outlets) provided in boxes and enclosures classified according to 7.3.2 shall be so
designed and constructed that the flexible cables can be easily introduced, and will not
damage the flexible cable where it enters the box or enclosure impairing its further use.
Compliance is checked by manual test.
12.5 Boxes and enclosures with inlets for applications other than flexible cables
Replace the first dashed text of the first paragraph of Subclause 12.5 by the following:
– a conduit or suitable fitting connecting it to the box or enclosure, and/or
12.7 Boxes and enclosures with cable retention means
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