SIST HD 60364-4-42:2011
(Main)Low voltage electrical installations - Part 4-42: Protection for safety - Protection against thermal effects
Low voltage electrical installations - Part 4-42: Protection for safety - Protection against thermal effects
Nizkonapetostne električne inštalacije - 4-42. del: Zaščitni ukrepi - Zaščita pred toplotnimi učinki (IEC 60364-4-42:2010, spremenjen)
Low voltage electrical installations - Part 4-42: Protection for safety - Protection against thermal effects
Osnova: HD 60364-4-42:2011
ICS: 29.120.50, 91.140.50
This part of IEC 60364 applies to electrical installations with regard to measures for the protection of persons, livestock and property against
– thermal effects, combustion or degradation of materials, and risk of burns caused by electrical equipment,
– flames in case of a fire hazard being propagated from electrical installations to other fire compartments segregated by barriers which are in the vicinity, and
– the impairment of the safe functioning of electrical equipment including safety services.
NOTE 1 For protection against thermal effects, national statutory requirements may be applicable.
NOTE 2 Protection against overcurrent is dealt with in IEC 60364-4-43.
Errichten von Niederspannungsanlagen - Teil 4-42: Schutzmaßnahmen - Schutz gegen thermische Einflüsse
Installations électriques basse tension - Partie 4- 42: Protection pour assurer la sécurité - Protection contre les effets thermiques
La CEI 60364-4-42:2010 s'applique aux installations électriques pour ce qui concerne les mesures de protection des personnes, du bétail et des biens contre - les effets thermiques, la combustion ou la dégradation des matériaux, et le risque de brûlure provoqués par un matériel électrique, - la propagation des flammes en cas de danger d'incendie, depuis les installations électriques vers d'autres compartiments feu séparés par des barrières se trouvant à proximité, et - les atteintes à la sécurité de fonctionnement des matériels électriques, y compris les services de sécurité. Cette troisième édition annule et remplace la seconde édition, publiée en 2001, et constitue une révision technique. Les principales modifications par rapport à l'édition précédente sont les suivantes: - Le domaine d'application inclut désormais la protection contre tous les effets thermiques et la propagation des flammes en cas d'incendie, depuis les installations électriques vers d'autres compartiments feu séparés par des barrières se trouvant à proximité. - Les exigences associées aux chemins d'évacuation en cas d'urgence ont été développées/modifiées. - Les exigences associées à la nature des matériaux traités ou stockés ont été développées et modifiées. - Les exigences associées aux matériaux de construction combustibles ont été développées/modifiées. - Les exigences associées aux structures propagatrices du feu ont été légèrement modifiées. - De nouvelles exigences pour le choix et la mise en oeuvre des installations dans des emplacements comportant un danger pour les biens irremplaçables ont été ajoutées. - La protection contre les surchauffes inclut désormais les appareils de chauffage.
Nizkonapetostne električne inštalacije - 4-42. del: Zaščitni ukrepi - Zaščita pred toplotnimi učinki (IEC 60364-4-42:2010, spremenjen)
Ta del IEC 60364 velja za električne inštalacije v zvezi z ukrepi za zaščito oseb, živine in lastnine pred:
– toplotnimi učinki, zgorevanjem ali razgradnjo materialov in nevarnostmi opeklin zaradi električne opreme;
– ognjem pri nevarnosti požara, ki se širi od električne napeljave do drugih požarnih sektorjev, ločenih s pregradami v bližini,
– okvaro varnega delovanja električne opreme, vključno z varnostnimi storitvami.
OPOMBA 1: Za zaščito pred toplotnimi učinki lahko veljajo nacionalne zakonske zahteve.
OPOMBA 2: Zaščito pred nadtokom obravnava IEC 60364-4-43.
General Information
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Buy Standard
Standards Content (Sample)
SLOVENSKI STANDARD
SIST HD 60364-4-42:2011
01-maj-2011
Nadomešča:
SIST HD 384.4.42 S1:2000
SIST HD 384.4.42 S1:2000/A1:2000
SIST HD 384.4.42 S1:2000/A2:2000
SIST HD 384.4.482 S1:2002
Nizkonapetostne električne inštalacije - 4-42. del: Zaščitni ukrepi - Zaščita pred
toplotnimi učinki (IEC 60364-4-42:2010, spremenjen)
Low voltage electrical installations - Part 4-42: Protection for safety - Protection against
thermal effects
Errichten von Niederspannungsanlagen - Teil 4-42: Schutzmaßnahmen - Schutz gegen
thermische Einflüsse
Installations électriques basse tension - Partie 4- 42: Protection pour assurer la sécurité -
Protection contre les effets thermiques
Ta slovenski standard je istoveten z: HD 60364-4-42:2011
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST HD 60364-4-42:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST HD 60364-4-42:2011
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SIST HD 60364-4-42:2011
HARMONIZATION DOCUMENT
HD 60364-4-42
DOCUMENT D'HARMONISATION
March 2011
HARMONISIERUNGSDOKUMENT
ICS 29.120.50; 91.140.50 Supersedes HD 384.4.42 S1:1985 + A1:1992 + A2:1994
English version
Low voltage electrical installations -
Part 4-42: Protection for safety -
Protection against thermal effects
(IEC 60364-4-42:2010, modified)
Installations électriques basse tension - Errichten von Niederspannungsanlagen -
Partie 4- 42: Protection pour assurer la Teil 4-42: Schutzmaßnahmen -
sécurité - Schutz gegen thermische Einflüsse
Protection contre les effets thermiques (IEC 60364-4-42:2010, modifiziert)
(CEI 60364-4-42:2010, modifiée)
This Harmonization Document was approved by CENELEC on 2011-02-14. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this
Harmonization Document at national level.
Up-to-date lists and bibliographical references concerning such national implementations may be obtained on
application to the Central Secretariat or to any CENELEC member.
This Harmonization Document exists in three official versions (English, French, German).
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
© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. HD 60364-4-42:2011 E
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HD 60364-4-42:2011 - 2 -
Foreword
The text of the International Standard IEC 60364-4-42:2010, prepared by IEC TC 64, Electrical installations
and protection against electric shock, together with common modifications prepared by the Technical
Committee CENELEC TC 64, Electrical installations and protection against electric shock, was submitted to
the formal vote and was approved by CENELEC as HD 60364-4-42 on 2011-02-14.
This European Standard supersedes HD 384.4.42 S1:1985 + A1:1992 + A2:1994.
The main changes with respect to HD 384.4.42 S1:1985 + A1:1992 + A2:1994 are listed below:
– The scope now includes protection against all thermal effects and flames in case of a fire hazard being
propagated from electrical installations to other fire compartments segregated by barriers which are in the
vicinity.
– Requirements associated with escape routes for evacuation in an emergency have been
expanded/modified.
– Requirements associated with the nature of processed or stored materials have been expanded/modified.
– Requirements associated with combustible constructional materials have been expanded/modified.
– Requirements associated with fire propagating structures have been modified slightly.
– New requirements for the selection and erection of installations in locations which might endanger
precious goods have been added.
– Protection against overheating now includes space heating appliances.
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 HD has to be implemented
at national level by publication of a harmonized
national standard or by endorsement (dop) 2012-02-14
– latest date by which the national standards conflicting
with the HD have to be withdrawn (dow) 2014-02-14
Annexes ZA to ZD have been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60364-4-42:2010 was approved by CENELEC as a Harmonization
Document with agreed common modifications as given below.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
[2] IEC 60079-14:1996 NOTE Harmonized as EN 60079-14:1997 (not modified).
[5] IEC 60332-1-2:2004 NOTE Harmonized as EN 60332-1-2:2004 (not modified).
[6] IEC 60332-3-21:2000 NOTE Harmonized as EN 60332-3-21:2009 (modified).
[7] IEC 60332-3-22:2000 NOTE Harmonized as EN 60332-3-22:2009 (not modified).
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[8] IEC 60332-3-23:2000 NOTE Harmonized as EN 60332-3-23:2009 (not modified).
[9] IEC 60332-3-24:2000 NOTE Harmonized as EN 60332-3-24 (not modified).
[10] IEC 60332-3-25:2000 NOTE Harmonized as EN 60332-3-25:2009 (not modified).
[11] IEC 60364-4-43 NOTE Harmonized as HD 60364-4-43.
[13] IEC 60364-5-52 NOTE Harmonized as HD 60364-5-52.
[16] IEC 60598 series NOTE Harmonized in EN 60598 series (partially modified).
[17] IEC 60598-1:2003 NOTE Harmonized as EN 60598-1:2004 (modified).
[18] IEC 60598-1:2008 NOTE Harmonized as EN 60598-1:2008 (modified).
[19] IEC 60670-1 NOTE Harmonized as EN 60670-1.
[20] IEC 60695-4 NOTE Harmonized as EN 60695-4.
[21] IEC 60702-1 NOTE Harmonized as EN 60702-1.
[22] IEC 60947-2 NOTE Harmonized as EN 60947-2.
[23] IEC 61034-2 NOTE Harmonized as EN 61034-2.
[25] IEC 61386-1 NOTE Harmonized as EN 61386-1.
[26] IEC 61439-1 NOTE Harmonized as EN 61439-1.
[27] IEC 62020 NOTE Harmonized as EN 62020.
[28] IEC 62305 series NOTE Harmonized in EN 62305 series (partially modified).
COMMON MODIFICATIONS
422 Precautions where particular risks of fire exist
422.3
Add the following note:
NOTE 3 Other locations having similar risk as those mentioned in IEC 60364-5-51, Table 51A, BE2 should also be considered, for
example commercial kitchens.
422.3.1
Modify the Note as follows:
F
Luminares marked in accordance with EN 60598-1 are suitable for mounting on a normally flammable
surface.
422.3.9
Modify first line as follows:
Final circuits supplying or traversing the location and current using equipment, shall be protected against
insulation faults as follows:
422.3.12
Modify text as follows:
PEN conductors are not allowed in locations where condition BE2 applies, except for circuits traversing such
locations and having no connection between their traversing PEN conductor and any conductive part in this
location and erected in such a way as to reduce the risk of a fault between the pen conductor and any
conductive part in the location to a minimum.
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HD 60364-4-42:2011 - 4 -
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60332 Series Tests on electric and optical fibre cables under EN 60332 Series
fire conditions
IEC 60364-4-41 2005 Low-voltage electrical installations - HD 60364-4-41 2007
(mod) Part 4-41: Protection for safety - Protection + corr. July 2007
against electric shock
IEC 60364-5-51 2005 Electrical installations of building - HD 60364-5-51 2009
(mod) Part 5-51: Selection and erection of electrical
equipment - Common rules
IEC 60598-2-24 - Luminaires - EN 60598-2-24 -
(mod) Part 2: Particular requirements -
Section 24: Luminaires with limited surface
temperatures
IEC 61084 Series Cable trunking and ducting systems for - -
electrical installations
IEC 61386 Series Conduit systems for cable management EN 61386 Series
IEC 61534 Series Powertrack systems EN 61534 Series
IEC 61537 - Cable management - Cable tray systems EN 61537 -
and cable ladder systems
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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 Harmonization Document.
For the countries in which the relevant special national conditions apply these provisions are normative, for
other countries they are informative.
Country Clause Wording
No.
420.1 In Germany the following additional requirements to the scope apply to
the second indent of clause 420.1 - against flames and smoke in case of
Germany
a fire hazard being propagated from electrical installations to other fire
compartments segregated by barriers which are in the vicinity, and
421.3 In Germany the following additional requirements for protection against
arcing apply:
421.3 Protective devices shall be installed for protection in case of
arcing where the electrical installation shall meet a high degree of
reliability.
Protective devices for the protection against arcing shall detect the light
effect of the arc and the increase of current in the line conductors.
Furthermore, they shall extinguish the arc within a time of 5 ms and
disconnect the electrical installation from the supply. The extinguishing
of the arc may not be generated before the set limiting values regarding
the light and current detection are exceeded.
Slowly acting protective devices are not able to prevent damage of
goods and that can make it impossible to put the electrical installation in
to operation again within a short time.
In general a separation by use of a metal sheet does not provide the
required arc withstand capability.
421.7 Where in case of a fire hazard from switchgear assemblies heavy smoke
generation in escape corridors may be assumed a sealed fire barrier for
the erection of the switchgear assembly is necessary.
This requirement is fulfilled if the switchgear assembly is placed in an
enclosure of non-combustible material or in a separate location. Ceilings
and walls of the separating location shall have a fireresisting capability
for a time of at least 90 min and doors for a time of at least 30 min.
422.1.2 Additional requirements apply in Germany:
“In Germany for the selection and erection of electrical equipment
Chapter 53 “Erection of low voltage installations –
Part 530: Selection and erection of electrical equipment – Switchgear and
controlgear” applies in addition.”
422.3 Section 422.3 includes, for example, the selection and erection of
installations in locations with risks of fire due to the nature of processed
or stored materials like the manufacturing, processing, storage of
combustible materials, including the accumulation of dust in barns,
wood working factories, paper mills, textile factories or similar.
NOTE The nature and allowed quantities of combustible materials, or surface or
volume of the locations may be regulated by national authorities.
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HD 60364-4-42:2011 - 6 -
Country Clause Wording
No.
422.3 Additional requirements apply in Germany:
In Germany the classification in fire-hazard areas is in the response of
the operator/user of the electrical installation, taking into account, if
necessary, the accident prevention regulation BGV A1 by the employers'
liability insurance association/EU-directive 89/654/EWG.
He should consult an expert for the classification. The publication
VdS 2033 „Feuergefährdete Betriebsstätten und diesen gleichzustellende
Risiken“, published by the German Insurance Association (GDV),
contains suitable case studies. Thereafter fire hazard areas are rooms or
places in the rooms or outside in which the danger insists that after local
and operational relations easily flammable materials in hazardous
amount comes closer to the electrical equipment in such a way, that
higher temperatures or arcs form a fire hazard. These can be areas like
work rooms, dry rooms and storerooms, hay camps, straw camps, jute
camps and flax camps as well as such sites outside, e.g., in paper,
textiles or wooden processing companies.
„Easily flammable“ are ignitable firm materials which burn, exposed to
the flame of a match for 10 s, and after removing the ignition source burn
and glow further by itself. Those materials are like hay or straw, straw
dust, shavings, loose wood-wool, magnesium filings, brushwood, loose
paper, tree and cell woollen fibres.
422.3.4 Additional requirements apply in Germany:
NOTE 3 PVC-jacketed cables, e.g., NYM and NYY, and the cable types in Table 1 fulfil the
requirements.
NOTE 4 The recommendation to use cable with improved fire characteristics, is fulfilled,
if the types are according to Table 1. This cable types have also an improved protection
against corrosion damages with halogens and smoke damages.
Table 1 − Halogen-free cable with improved fire characteristics
Type short- Standard
sign
NHXMH DIN VDE 0250-214
(VDE 0250 Teil 214)
NHMH DIN VDE 0250-215
(VDE 0250 Teil 215)
NSHXA DIN VDE 0250-606
(VDE 0250 Teil 606)
H05Z-U DIN VDE 0282-9
H05Z-K (VDE 0282 Teil 9)
H07Z-U
H07Z-R
H07Z-K
H07ZZ-F DIN VDE 0282-13
(VDE 0282 Teil 13)
NHXH DIN VDE 0266 (VDE
0266)
NHXHX
NHXH FE
180
NHXCHX FE
180
NHXCH
NHXCHX
NHXCH FE
180
N2XH DIN VDE 0276-604
(VDE 0276 Teil 604)
N2XCH
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Country Clause Wording
No.
Where an RCD may not be used, e.g. in the case of high operating
422.3.9a
currents, it is recommended to apply an equivalent protective measure,
e.g. a power switch with a coordinated RCD independent of the supply
voltage according to IEC 60947-2 - Residual current monitoring (RCM)
according to IEC 60020.
NOTE 1 This requirement is generally fulfilled if the disconnection occurs in a
time not exceeding 5 s. In electrical installations with a rated voltage 230/400 V
AC for this purpose RCD with a rated residual operating current not exceeding
300 mA are used.
NOTE 2 In the case of panel heating systems this requirement is fulfilled if the
disconnection occurs at a power of not more than 7 W at the place of the
insulation fault. In electrical installations with a rated voltage 230/400 V AC for
this purpose, RCDs with a rated residual operating current not exceeding 30 mA
are used.
422.3.9c Disconnection is not necessary where provisions are taken to prevent
Germany the occurrence of a fire hazard by short circuits or earth faults caused by
external influences like mechanical stresses.
422.3.9d Disconnection is not required for circuits which are erected in a short-
circuit and earth leakage proof manner.
NOTE 3 For short-circuit and earth leakage proof installation methods of wiring
systems see IEC 60364-5-52 and IEC 60439-1.
In every circuit the protective conductor shall be installed in close
422.3.9e
proximity to the live conductors and shall be introduced in equipment of
class II construction.
NOTE 4 For further requirements for floor and ceiling heating systems see
IEC 60364-7-753.
422.3.13 Delete Subclause 422.3.13
422.3.9 In Norway, RCDs with a rated residual operating current not exceeding
Norway 30 mA shall be used in IT installations connected to a public low voltage
distribution network.
424.1 In Norway, the following additional requirements apply:
In Norway it is required that one of the temperature limiting devices is a
thermal release. The thermal release shall disconnect all live conductors
and shall have manual resetting.
422.3.9 Additional requirements apply in the Czech Republic: the first sentence of
422.3.9 is as follows:
“Final circuits and current-using equipment, with the exception of wiring
Czech
systems enclosed in enclosures having degree of protection at least IP4X, shall
Republic
be protected against insulation faults as follows:”
422.4.1 Connections in junction boxes in a hollow combustible wall shall
Ireland comply with 526, and shall in addition be provided with a means of
strain-relief:
Ireland 422.2 Not applicable in Ireland
In Ireland, the following applies:
422.4.1
Ireland Connections in junction boxes in a hollow wall shall comply with 526,
and in addition shall be provided with a means of strain-relief.
Sweden 422.3.9 "In Sweden the common modification of 422.3.9 does not apply."
In Italy, the following additional requirement applies to 422.2.1:
422.2.1
Italy
Transfer the content of the subclause into a subclause of 422.1.
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HD 60364-4-42:2011 - 8 -
Country Clause Wording
No.
In Italy, the following additional requirement applies: to 422.2.2:
422.2.2
Transfer the content of the subclause into a subclause of 422.1.
In Italy, the following additional requirement applies to 422.2.3:
422.2.3
Transfer the content of the subclause, except for the first paragraph, with the
addition of the words “BD 2” conditions”, into a subclause of 422.1.
In Italy, the following additional requirements applies to 422.3:
Transfer the content of the subclause, except for the first paragraph, into a
subclause of 422.1.
Add the following:
422.3.3
This clause applies also to SELV and PELV systems.
The requirement concerning IP degrees of protection does not refer to
socket-outlets for household and similar use, to switches for circuits for
lighting and similar applications neither to circuit-breakers having rated
current not higher than 16 A and rated short-circuit capacity not higher than
3 000 A, in the case where they are used in a location where a particular risk
of fire exists.
In Italy, the following additional requirements apply to 422.3.4:
422.3.4
Precautions may be one of the following:
a) wiring with cable enclosed in a metal conduit or other metal enclosures,
having a degree of protection of at least IP 4X; or wiring with mineral
insulated cables without external non-metallic sheath;
b) wiring with multicore cables provided with concentric metallic sheath, or
metallic screen, or with cores provided with metallic sheaths, suitable to
perform the protective conductors function; or wiring with mineral insulated
cables with external non metallic sheath;
c) wiring with multicore cables incorporating a protective conductor; or wiring
with cables enclosed in metal conduit or other metal enclosures without a
particular degree of protection, or wiring with cables enclosed in insulating
enclosures having a degree of protection at least IP 4X.
In Italy, the following additional requirement applies to 422.3.4:
422.3.4
Transfer the content of the subclause into a subclause of 422.1,deleting
Note 1 and introducing, after the first indent, the following text:
“In particular for wiring described under b) and c), cables shall satisfy the test
under the conditions specified in IEC 60332-1 where installed individually or
at adequate distance within them. Alternatively, the cables shall meet the
flame propagation characteristics as defined in IEC 60332-3, provided that
the quantity of non-metallic materials does not exceed that specified in the
above-mentioned standard: otherwise, adequate fire barriers shall be
provided. In the case where the above precautions are not applied, fire
barriers shall be used”.
In Italy, the following additional requirement applies to 422.3.5:
422.3.5
Transfer the content of the subclause into a subclause of 422.1.
In Italy, the following additional requirement applies to 422.3.10:
422.3.10
Transfer into a subclause of 422.1 the content of the subclause, modified to
read as follows:
“Circuits supplying or traversing locations with a particular risk of danger of
fire shall be protected against overloads and short-circuits by overcurrent
protective devices located outside and on the supply side of these locations.
Circuits originating inside these locations shall be protected against
overcurrent by protective devices located at their origin."
In Italy, transfer the content of the subclause into a subclause of 422.1.
422.3.12
In Spain, UNE 201006 and its standard sheaths require the use of screws as the only
421.1
Spain
fixing means of the accessory with its enclosure.
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Annex ZC
(informative)
A-deviations
A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the
competence of the CENELEC national member.
This Harmonization Document does not fall under any Directive of the EC.
In the relevant CENELEC countries these A-deviations are valid instead of the provisions of the
Harmonization Document until they have been removed.
422.2 Additional requirements apply in Germany:
For wiring in escape routes there are special conditions established by
Germany
federal state authorities on the basis of the “Muster-Richtlinie über
brandschutztechnische Anforderungen an Leitungsanlagen (Muster-
Leitungsanlagen-Richtlinien MLAR)”
In Germany the following additional requirements for highly fire-retarding
422.4
components in timber-frame construction manner apply to 422.4.
For wiring in connection with highly fire-retarding components in timber-frame
construction manner, special conditions established by federal state authorities
on the basis of the Muster-Richtlinie über “Brandschutztechnische
Anforderungen an hochfeuerhemmnende Bauteile in Holzbauweise“ – M-
HFHHolzR.
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HD 60364-4-42:2011 - 10 -
Annex ZD
(informative)
B-deviations
B-deviation: National deviation from an HD due to particular technical requirements, permitted for a
specified transitional period.
422.3.1 Additional requirements apply in Germany:
Luminaires marked D in accordance with IEC 60598-1 are suitable for
mounting on normally flammable surfaces. For luminaires marked with
the symbol D, protection against deposition of dust and other
substances shall be provided also inside the luminaire. For compliance
Germany
with this requirement the luminaire is covered in the direction of the spot
light with a protective glass cover or a tube of IP5X.
Table ZB.1 in HD 60364-5-559 deals with the selection of luminaires and
lamp control gear in dependency of the location and surface of
installation.
422.5 Additional requirements apply in Germany:
422.5.2 Electrical equipment like outlets and switches, shall not be
fastened with claws.
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SIST HD 60364-4-42:2011
IEC 60364-4-42
®
Edition 3.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage electrical installations –
Part 4-42: Protection for safety – Protection against thermal effects
Installations électriques basse tension –
Partie 4-42: Protection pour assurer la sécurité – Protection contre les effets
thermiques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
S
CODE PRIX
ICS 29.120.50; 91.140.50 ISBN 978-2-88910-942-5
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST HD 60364-4-42:2011
– 2 – 60364-4-42 © IEC:2010
CONTENTS
FOREWORD.3
420.1 Scope .5
420.2 Normative references .5
420.3 Terms and definitions.5
421 Protection against fire caused by electrical equipment .6
421.1 General requirements .6
422 Precautions where particular risks of fire exist.8
422.1 General .8
422.2 Conditions of evacuation in an emergency.8
422.3 Locations with risks of fire due to the nature of processed or stored
materials .9
422.4 Locations with combustible constructional materials .11
422.5 Fire propagating structures.12
422.6 Selection and erection of installations in locations with endangering
of irreplaceable goods .12
423 Protection against burns .13
424 Protection against overheating .13
424.1 Forced air heating systems.13
424.2 Appliances producing hot water or steam .13
424.3 Space heating appliances.14
Annex A (informative) List of notes concerning certain countries.15
Bibliography.19
Table 42.1 – Temperature limits in normal service for accessible parts of equipment
within arm’s reach.13
---------------------- Page: 14 ----------------------
SIST HD 60364-4-42:2011
60364-4-42 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –
Part 4-42: Protection for safety –
Protection against thermal effects
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 respo
...
SLOVENSKI STANDARD
SIST HD 60364-4-42:2011
01-maj-2011
1DGRPHãþD
SIST HD 384.4.42 S1:2000
SIST HD 384.4.42 S1:2000/A1:2000
SIST HD 384.4.42 S1:2000/A2:2000
1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO =DãþLWQLXNUHSL=DãþLWDSUHG
WRSORWQLPLXþLQNL ,(& VSUHPHQMHQ
Low voltage electrical installations - Part 4-42: Protection for safety - Protection against
thermal effects
Errichten von Niederspannungsanlagen - Teil 4-42: Schutzmaßnahmen - Schutz gegen
thermische Einflüsse
Installations électriques basse tension - Partie 4- 42: Protection pour assurer la sécurité -
Protection contre les effets thermiques
Ta slovenski standard je istoveten z: HD 60364-4-42:2011
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
SIST HD 60364-4-42:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST HD 60364-4-42:2011
---------------------- Page: 2 ----------------------
SIST HD 60364-4-42:2011
HARMONIZATION DOCUMENT
HD 60364-4-42
DOCUMENT D'HARMONISATION
March 2011
HARMONISIERUNGSDOKUMENT
ICS 29.120.50; 91.140.50 Supersedes HD 384.4.42 S1:1985 + A1:1992 + A2:1994
English version
Low voltage electrical installations -
Part 4-42: Protection for safety -
Protection against thermal effects
(IEC 60364-4-42:2010, modified)
Installations électriques basse tension - Errichten von Niederspannungsanlagen -
Partie 4- 42: Protection pour assurer la Teil 4-42: Schutzmaßnahmen -
sécurité - Schutz gegen thermische Einflüsse
Protection contre les effets thermiques (IEC 60364-4-42:2010, modifiziert)
(CEI 60364-4-42:2010, modifiée)
This Harmonization Document was approved by CENELEC on 2011-02-14. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this
Harmonization Document at national level.
Up-to-date lists and bibliographical references concerning such national implementations may be obtained on
application to the Central Secretariat or to any CENELEC member.
This Harmonization Document exists in three official versions (English, French, German).
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
© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. HD 60364-4-42:2011 E
---------------------- Page: 3 ----------------------
SIST HD 60364-4-42:2011
HD 60364-4-42:2011 - 2 -
Foreword
The text of the International Standard IEC 60364-4-42:2010, prepared by IEC TC 64, Electrical installations
and protection against electric shock, together with common modifications prepared by the Technical
Committee CENELEC TC 64, Electrical installations and protection against electric shock, was submitted to
the formal vote and was approved by CENELEC as HD 60364-4-42 on 2011-02-14.
This European Standard supersedes HD 384.4.42 S1:1985 + A1:1992 + A2:1994.
The main changes with respect to HD 384.4.42 S1:1985 + A1:1992 + A2:1994 are listed below:
– The scope now includes protection against all thermal effects and flames in case of a fire hazard being
propagated from electrical installations to other fire compartments segregated by barriers which are in the
vicinity.
– Requirements associated with escape routes for evacuation in an emergency have been
expanded/modified.
– Requirements associated with the nature of processed or stored materials have been expanded/modified.
– Requirements associated with combustible constructional materials have been expanded/modified.
– Requirements associated with fire propagating structures have been modified slightly.
– New requirements for the selection and erection of installations in locations which might endanger
precious goods have been added.
– Protection against overheating now includes space heating appliances.
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 HD has to be implemented
at national level by publication of a harmonized
national standard or by endorsement (dop) 2012-02-14
– latest date by which the national standards conflicting
with the HD have to be withdrawn (dow) 2014-02-14
Annexes ZA to ZD have been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60364-4-42:2010 was approved by CENELEC as a Harmonization
Document with agreed common modifications as given below.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
[2] IEC 60079-14:1996 NOTE Harmonized as EN 60079-14:1997 (not modified).
[5] IEC 60332-1-2:2004 NOTE Harmonized as EN 60332-1-2:2004 (not modified).
[6] IEC 60332-3-21:2000 NOTE Harmonized as EN 60332-3-21:2009 (modified).
[7] IEC 60332-3-22:2000 NOTE Harmonized as EN 60332-3-22:2009 (not modified).
---------------------- Page: 4 ----------------------
SIST HD 60364-4-42:2011
- 3 - HD 60364-4-42:2011
[8] IEC 60332-3-23:2000 NOTE Harmonized as EN 60332-3-23:2009 (not modified).
[9] IEC 60332-3-24:2000 NOTE Harmonized as EN 60332-3-24 (not modified).
[10] IEC 60332-3-25:2000 NOTE Harmonized as EN 60332-3-25:2009 (not modified).
[11] IEC 60364-4-43 NOTE Harmonized as HD 60364-4-43.
[13] IEC 60364-5-52 NOTE Harmonized as HD 60364-5-52.
[16] IEC 60598 series NOTE Harmonized in EN 60598 series (partially modified).
[17] IEC 60598-1:2003 NOTE Harmonized as EN 60598-1:2004 (modified).
[18] IEC 60598-1:2008 NOTE Harmonized as EN 60598-1:2008 (modified).
[19] IEC 60670-1 NOTE Harmonized as EN 60670-1.
[20] IEC 60695-4 NOTE Harmonized as EN 60695-4.
[21] IEC 60702-1 NOTE Harmonized as EN 60702-1.
[22] IEC 60947-2 NOTE Harmonized as EN 60947-2.
[23] IEC 61034-2 NOTE Harmonized as EN 61034-2.
[25] IEC 61386-1 NOTE Harmonized as EN 61386-1.
[26] IEC 61439-1 NOTE Harmonized as EN 61439-1.
[27] IEC 62020 NOTE Harmonized as EN 62020.
[28] IEC 62305 series NOTE Harmonized in EN 62305 series (partially modified).
COMMON MODIFICATIONS
422 Precautions where particular risks of fire exist
422.3
Add the following note:
NOTE 3 Other locations having similar risk as those mentioned in IEC 60364-5-51, Table 51A, BE2 should also be considered, for
example commercial kitchens.
422.3.1
Modify the Note as follows:
F
Luminares marked in accordance with EN 60598-1 are suitable for mounting on a normally flammable
surface.
422.3.9
Modify first line as follows:
Final circuits supplying or traversing the location and current using equipment, shall be protected against
insulation faults as follows:
422.3.12
Modify text as follows:
PEN conductors are not allowed in locations where condition BE2 applies, except for circuits traversing such
locations and having no connection between their traversing PEN conductor and any conductive part in this
location and erected in such a way as to reduce the risk of a fault between the pen conductor and any
conductive part in the location to a minimum.
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SIST HD 60364-4-42:2011
HD 60364-4-42:2011 - 4 -
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60332 Series Tests on electric and optical fibre cables under EN 60332 Series
fire conditions
IEC 60364-4-41 2005 Low-voltage electrical installations - HD 60364-4-41 2007
(mod) Part 4-41: Protection for safety - Protection + corr. July 2007
against electric shock
IEC 60364-5-51 2005 Electrical installations of building - HD 60364-5-51 2009
(mod) Part 5-51: Selection and erection of electrical
equipment - Common rules
IEC 60598-2-24 - Luminaires - EN 60598-2-24 -
(mod) Part 2: Particular requirements -
Section 24: Luminaires with limited surface
temperatures
IEC 61084 Series Cable trunking and ducting systems for - -
electrical installations
IEC 61386 Series Conduit systems for cable management EN 61386 Series
IEC 61534 Series Powertrack systems EN 61534 Series
IEC 61537 - Cable management - Cable tray systems EN 61537 -
and cable ladder systems
---------------------- Page: 6 ----------------------
SIST HD 60364-4-42:2011
- 5 - HD 60364-4-42:2011
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 Harmonization Document.
For the countries in which the relevant special national conditions apply these provisions are normative, for
other countries they are informative.
Country Clause Wording
No.
420.1 In Germany the following additional requirements to the scope apply to
the second indent of clause 420.1 - against flames and smoke in case of
Germany
a fire hazard being propagated from electrical installations to other fire
compartments segregated by barriers which are in the vicinity, and
421.3 In Germany the following additional requirements for protection against
arcing apply:
421.3 Protective devices shall be installed for protection in case of
arcing where the electrical installation shall meet a high degree of
reliability.
Protective devices for the protection against arcing shall detect the light
effect of the arc and the increase of current in the line conductors.
Furthermore, they shall extinguish the arc within a time of 5 ms and
disconnect the electrical installation from the supply. The extinguishing
of the arc may not be generated before the set limiting values regarding
the light and current detection are exceeded.
Slowly acting protective devices are not able to prevent damage of
goods and that can make it impossible to put the electrical installation in
to operation again within a short time.
In general a separation by use of a metal sheet does not provide the
required arc withstand capability.
421.7 Where in case of a fire hazard from switchgear assemblies heavy smoke
generation in escape corridors may be assumed a sealed fire barrier for
the erection of the switchgear assembly is necessary.
This requirement is fulfilled if the switchgear assembly is placed in an
enclosure of non-combustible material or in a separate location. Ceilings
and walls of the separating location shall have a fireresisting capability
for a time of at least 90 min and doors for a time of at least 30 min.
422.1.2 Additional requirements apply in Germany:
“In Germany for the selection and erection of electrical equipment
Chapter 53 “Erection of low voltage installations –
Part 530: Selection and erection of electrical equipment – Switchgear and
controlgear” applies in addition.”
422.3 Section 422.3 includes, for example, the selection and erection of
installations in locations with risks of fire due to the nature of processed
or stored materials like the manufacturing, processing, storage of
combustible materials, including the accumulation of dust in barns,
wood working factories, paper mills, textile factories or similar.
NOTE The nature and allowed quantities of combustible materials, or surface or
volume of the locations may be regulated by national authorities.
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SIST HD 60364-4-42:2011
HD 60364-4-42:2011 - 6 -
Country Clause Wording
No.
422.3 Additional requirements apply in Germany:
In Germany the classification in fire-hazard areas is in the response of
the operator/user of the electrical installation, taking into account, if
necessary, the accident prevention regulation BGV A1 by the employers'
liability insurance association/EU-directive 89/654/EWG.
He should consult an expert for the classification. The publication
VdS 2033 „Feuergefährdete Betriebsstätten und diesen gleichzustellende
Risiken“, published by the German Insurance Association (GDV),
contains suitable case studies. Thereafter fire hazard areas are rooms or
places in the rooms or outside in which the danger insists that after local
and operational relations easily flammable materials in hazardous
amount comes closer to the electrical equipment in such a way, that
higher temperatures or arcs form a fire hazard. These can be areas like
work rooms, dry rooms and storerooms, hay camps, straw camps, jute
camps and flax camps as well as such sites outside, e.g., in paper,
textiles or wooden processing companies.
„Easily flammable“ are ignitable firm materials which burn, exposed to
the flame of a match for 10 s, and after removing the ignition source burn
and glow further by itself. Those materials are like hay or straw, straw
dust, shavings, loose wood-wool, magnesium filings, brushwood, loose
paper, tree and cell woollen fibres.
422.3.4 Additional requirements apply in Germany:
NOTE 3 PVC-jacketed cables, e.g., NYM and NYY, and the cable types in Table 1 fulfil the
requirements.
NOTE 4 The recommendation to use cable with improved fire characteristics, is fulfilled,
if the types are according to Table 1. This cable types have also an improved protection
against corrosion damages with halogens and smoke damages.
Table 1 − Halogen-free cable with improved fire characteristics
Type short- Standard
sign
NHXMH DIN VDE 0250-214
(VDE 0250 Teil 214)
NHMH DIN VDE 0250-215
(VDE 0250 Teil 215)
NSHXA DIN VDE 0250-606
(VDE 0250 Teil 606)
H05Z-U DIN VDE 0282-9
H05Z-K (VDE 0282 Teil 9)
H07Z-U
H07Z-R
H07Z-K
H07ZZ-F DIN VDE 0282-13
(VDE 0282 Teil 13)
NHXH DIN VDE 0266 (VDE
0266)
NHXHX
NHXH FE
180
NHXCHX FE
180
NHXCH
NHXCHX
NHXCH FE
180
N2XH DIN VDE 0276-604
(VDE 0276 Teil 604)
N2XCH
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SIST HD 60364-4-42:2011
- 7 - HD 60364-4-42:2011
Country Clause Wording
No.
Where an RCD may not be used, e.g. in the case of high operating
422.3.9a
currents, it is recommended to apply an equivalent protective measure,
e.g. a power switch with a coordinated RCD independent of the supply
voltage according to IEC 60947-2 - Residual current monitoring (RCM)
according to IEC 60020.
NOTE 1 This requirement is generally fulfilled if the disconnection occurs in a
time not exceeding 5 s. In electrical installations with a rated voltage 230/400 V
AC for this purpose RCD with a rated residual operating current not exceeding
300 mA are used.
NOTE 2 In the case of panel heating systems this requirement is fulfilled if the
disconnection occurs at a power of not more than 7 W at the place of the
insulation fault. In electrical installations with a rated voltage 230/400 V AC for
this purpose, RCDs with a rated residual operating current not exceeding 30 mA
are used.
422.3.9c Disconnection is not necessary where provisions are taken to prevent
Germany the occurrence of a fire hazard by short circuits or earth faults caused by
external influences like mechanical stresses.
422.3.9d Disconnection is not required for circuits which are erected in a short-
circuit and earth leakage proof manner.
NOTE 3 For short-circuit and earth leakage proof installation methods of wiring
systems see IEC 60364-5-52 and IEC 60439-1.
In every circuit the protective conductor shall be installed in close
422.3.9e
proximity to the live conductors and shall be introduced in equipment of
class II construction.
NOTE 4 For further requirements for floor and ceiling heating systems see
IEC 60364-7-753.
422.3.13 Delete Subclause 422.3.13
422.3.9 In Norway, RCDs with a rated residual operating current not exceeding
Norway 30 mA shall be used in IT installations connected to a public low voltage
distribution network.
424.1 In Norway, the following additional requirements apply:
In Norway it is required that one of the temperature limiting devices is a
thermal release. The thermal release shall disconnect all live conductors
and shall have manual resetting.
422.3.9 Additional requirements apply in the Czech Republic: the first sentence of
422.3.9 is as follows:
“Final circuits and current-using equipment, with the exception of wiring
Czech
systems enclosed in enclosures having degree of protection at least IP4X, shall
Republic
be protected against insulation faults as follows:”
422.4.1 Connections in junction boxes in a hollow combustible wall shall
Ireland comply with 526, and shall in addition be provided with a means of
strain-relief:
Ireland 422.2 Not applicable in Ireland
In Ireland, the following applies:
422.4.1
Ireland Connections in junction boxes in a hollow wall shall comply with 526,
and in addition shall be provided with a means of strain-relief.
Sweden 422.3.9 "In Sweden the common modification of 422.3.9 does not apply."
In Italy, the following additional requirement applies to 422.2.1:
422.2.1
Italy
Transfer the content of the subclause into a subclause of 422.1.
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SIST HD 60364-4-42:2011
HD 60364-4-42:2011 - 8 -
Country Clause Wording
No.
In Italy, the following additional requirement applies: to 422.2.2:
422.2.2
Transfer the content of the subclause into a subclause of 422.1.
In Italy, the following additional requirement applies to 422.2.3:
422.2.3
Transfer the content of the subclause, except for the first paragraph, with the
addition of the words “BD 2” conditions”, into a subclause of 422.1.
In Italy, the following additional requirements applies to 422.3:
Transfer the content of the subclause, except for the first paragraph, into a
subclause of 422.1.
Add the following:
422.3.3
This clause applies also to SELV and PELV systems.
The requirement concerning IP degrees of protection does not refer to
socket-outlets for household and similar use, to switches for circuits for
lighting and similar applications neither to circuit-breakers having rated
current not higher than 16 A and rated short-circuit capacity not higher than
3 000 A, in the case where they are used in a location where a particular risk
of fire exists.
In Italy, the following additional requirements apply to 422.3.4:
422.3.4
Precautions may be one of the following:
a) wiring with cable enclosed in a metal conduit or other metal enclosures,
having a degree of protection of at least IP 4X; or wiring with mineral
insulated cables without external non-metallic sheath;
b) wiring with multicore cables provided with concentric metallic sheath, or
metallic screen, or with cores provided with metallic sheaths, suitable to
perform the protective conductors function; or wiring with mineral insulated
cables with external non metallic sheath;
c) wiring with multicore cables incorporating a protective conductor; or wiring
with cables enclosed in metal conduit or other metal enclosures without a
particular degree of protection, or wiring with cables enclosed in insulating
enclosures having a degree of protection at least IP 4X.
In Italy, the following additional requirement applies to 422.3.4:
422.3.4
Transfer the content of the subclause into a subclause of 422.1,deleting
Note 1 and introducing, after the first indent, the following text:
“In particular for wiring described under b) and c), cables shall satisfy the test
under the conditions specified in IEC 60332-1 where installed individually or
at adequate distance within them. Alternatively, the cables shall meet the
flame propagation characteristics as defined in IEC 60332-3, provided that
the quantity of non-metallic materials does not exceed that specified in the
above-mentioned standard: otherwise, adequate fire barriers shall be
provided. In the case where the above precautions are not applied, fire
barriers shall be used”.
In Italy, the following additional requirement applies to 422.3.5:
422.3.5
Transfer the content of the subclause into a subclause of 422.1.
In Italy, the following additional requirement applies to 422.3.10:
422.3.10
Transfer into a subclause of 422.1 the content of the subclause, modified to
read as follows:
“Circuits supplying or traversing locations with a particular risk of danger of
fire shall be protected against overloads and short-circuits by overcurrent
protective devices located outside and on the supply side of these locations.
Circuits originating inside these locations shall be protected against
overcurrent by protective devices located at their origin."
In Italy, transfer the content of the subclause into a subclause of 422.1.
422.3.12
In Spain, UNE 201006 and its standard sheaths require the use of screws as the only
421.1
Spain
fixing means of the accessory with its enclosure.
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SIST HD 60364-4-42:2011
- 9 - HD 60364-4-42:2011
Annex ZC
(informative)
A-deviations
A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the
competence of the CENELEC national member.
This Harmonization Document does not fall under any Directive of the EC.
In the relevant CENELEC countries these A-deviations are valid instead of the provisions of the
Harmonization Document until they have been removed.
422.2 Additional requirements apply in Germany:
For wiring in escape routes there are special conditions established by
Germany
federal state authorities on the basis of the “Muster-Richtlinie über
brandschutztechnische Anforderungen an Leitungsanlagen (Muster-
Leitungsanlagen-Richtlinien MLAR)”
In Germany the following additional requirements for highly fire-retarding
422.4
components in timber-frame construction manner apply to 422.4.
For wiring in connection with highly fire-retarding components in timber-frame
construction manner, special conditions established by federal state authorities
on the basis of the Muster-Richtlinie über “Brandschutztechnische
Anforderungen an hochfeuerhemmnende Bauteile in Holzbauweise“ – M-
HFHHolzR.
---------------------- Page: 11 ----------------------
SIST HD 60364-4-42:2011
HD 60364-4-42:2011 - 10 -
Annex ZD
(informative)
B-deviations
B-deviation: National deviation from an HD due to particular technical requirements, permitted for a
specified transitional period.
422.3.1 Additional requirements apply in Germany:
Luminaires marked D in accordance with IEC 60598-1 are suitable for
mounting on normally flammable surfaces. For luminaires marked with
the symbol D, protection against deposition of dust and other
substances shall be provided also inside the luminaire. For compliance
Germany
with this requirement the luminaire is covered in the direction of the spot
light with a protective glass cover or a tube of IP5X.
Table ZB.1 in HD 60364-5-559 deals with the selection of luminaires and
lamp control gear in dependency of the location and surface of
installation.
422.5 Additional requirements apply in Germany:
422.5.2 Electrical equipment like outlets and switches, shall not be
fastened with claws.
---------------------- Page: 12 ----------------------
SIST HD 60364-4-42:2011
IEC 60364-4-42
®
Edition 3.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage electrical installations –
Part 4-42: Protection for safety – Protection against thermal effects
Installations électriques basse tension –
Partie 4-42: Protection pour assurer la sécurité – Protection contre les effets
thermiques
IEC 60364-4-42:2010
---------------------- Page: 13 ----------------------
SIST HD 60364-4-42:2011
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---------------------- Page: 14 ----------------------
SIST HD 60364-4-42:2011
IEC 60364-4-42
®
Edition 3.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage electrical installations –
Part 4-42: Protection for safety – Protection against thermal effects
Installations électriques basse tension –
Partie 4-42: Protection pour assurer la sécurité – Protection co
...
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