SIST EN 60079-15:2011
(Main)Explosive atmospheres - Part 15: Equipment protection by type of protection n (IEC 60079-15:2010)
Explosive atmospheres - Part 15: Equipment protection by type of protection n (IEC 60079-15:2010)
This part of IEC 60079 specifies requirements for the construction, testing and marking for Group II electrical equipment with type of protection, "n" intended for use in explosive gas atmospheres. This standard applies to electrical equipment where the rated voltage does not exceed 15 kV r.m.s. a.c. or d.c.
This part of IEC 60079 is applicable to non-sparking electrical equipment and also to electrical equipment with parts or circuits producing arcs or sparks or having hot surfaces which, if not protected in one of the ways specified in this standard, could be capable of igniting a surrounding explosive gas atmosphere. This standard describes several different methods by which this can be achieved which may be combined with other methods described in IEC 60079-0.
This standard supplements and modifies the general requirements of IEC 60079-0, except as indicated in Table 1. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirement of this standard takes precedence.
Explosionsfähige Atmosphäre - Teil 15: Geräteschutz durch Zündschutzart n (IEC 60079-15:2010)
Atmosphères explosives - Partie 15: Protection de matériels par mode de protection n (CEI 60079-15:2010)
CEI 60079-15:2010 spécifie les exigences de construction, d'essai et de marquage du matériel électrique du Groupe II avec mode de protection ' n ' destiné à être utilisé en atmosphère explosive gazeuse. La présente norme s'applique au matériel électrique dont la tension assignée ne dépasse pas 15 kV efficace, c.a. ou c.c. La présente norme complète et modifie les exigences générales de la CEI 60079-0, à l'exception de celles qui sont indiquées dans le Tableau 1. Si une exigence de la présente norme est en conflit avec une exigence de la CEI 60079-0, l'exigence de la présente norme prévaut. Les modifications techniques importantes par rapport à l'édition précédente sont les suivantes: - ajout des niveaux de protection des matériels; - retrait des exigences pour les appareils ' nL ' à énergie limitée et les appareils ' [nL] ' à énergie limitée associés; - retrait des exigences pour les dispositifs encapsulés ' nC '; - exigences étendues et clarifiées pour les raccordements électriques; - exigences étendues et clarifiées pour les ballasts pour luminaire; - exigences clarifiées pour l'évaluation et les essais sur les rotors de moteur; - limite de 15 kV ajoutée pour la protection du matériel du mode de protection ' n'; - exigence en matière d'espacement modifiée pour les tensions supérieures à 10 kV; - exigences modifiées pour les enveloppes à respiration limitée; - modification des exigences pour les stators et rotors de moteurs; - ajout de l'Annexe A (informative); - introduction de références non datées à la CEI 60079-0.
Eksplozivne atmosfere - 15. del: Zaščita opreme s protieksplozijsko zaščito "n" (IEC 60079-15:2010)
Ta del IEC 60079 določa zahteve za konstrukcijo, preskušanje in označevanje električne opreme skupine II s protieksplozijsko zaščito »n«, namenjene uporabi v eksplozivnih plinskih atmosferah. Ta standard velja za električno opremo, pri kateri nazivna napetost ne presega 15 kVrms dvosmernega ali enosmernega toka.
Ta del IEC 60079 velja za električno opremo, ki se ne iskri, in za električno opremo z deli ali vezji, ki proizvajajo električne obloke ali iskre ali imajo vroče površine, ki bi lahko vžgale obdajajočo eksplozivno plinsko atmosfero, če niso zaščitene na enega od načinov, navedenih v tem standardu. Ta standard opisuje več različnih metod, s katerimi se to lahko doseže, ki se lahko kombinirajo z drugimi metodami, opisanimi v IEC 60079-0.
Ta standard dopolnjuje in spreminja splošne zahteve IEC 60079-0, razen kot je nakazano v preglednici 1. Kjer zahteva tega standarda nasprotuje zahtevi IEC 60079-0, ima zahteva tega standarda prednost.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 60079-15:2011
01-maj-2011
1DGRPHãþD
SIST EN 60079-15:2006
(NVSOR]LYQHDWPRVIHUHGHO =DãþLWDRSUHPHVSURWLHNVSOR]LMVNR]DãþLWR
Q ,(&
Explosive atmospheres - Part 15: Equipment protection by type of protection n (IEC
60079-15:2010)
Explosionsfähige Atmosphäre - Teil 15: Geräteschutz durch Zündschutzart n (IEC
60079-15:2010)
Atmosphères explosives - Partie 15: Protection de matériels par mode de protection n
(CEI 60079-15:2010)
Ta slovenski standard je istoveten z: EN 60079-15:2010
ICS:
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
SIST EN 60079-15:2011 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 60079-15:2011
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SIST EN 60079-15:2011
EUROPEAN STANDARD
EN 60079-15
NORME EUROPÉENNE
May 2010
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN 60079-15:2005
English version
Explosive atmospheres -
Part 15: Equipment protection by type of protection "n"
(IEC 60079-15:2010)
Atmosphères explosives - Explosionsfähige Atmosphäre -
Partie 15: Protection du matériel Teil 15: Geräteschutz
par mode de protection "n" durch Zündschutzart "n"
(CEI 60079-15:2010) (IEC 60079-15:2010)
This European Standard was approved by CENELEC on 2010-05-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-15:2010 E
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SIST EN 60079-15:2011
EN 60079-15:2010 - 2 -
Foreword
The text of document 31/833/FDIS, future edition 4 of IEC 60079-15, prepared by IEC TC 31, Equipment
for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote and was approved by
CENELEC as EN 60079-15 on 2010-05-01.
This European Standard supersedes EN 60079-15:2005.
The significant technical changes with respect to EN 60079-15:2005 are as follows:
– addition of equipment protection levels;
– removal of the requirements for energy-limited “nL” and associated energy limited apparatus “[nL]”;
– removal of the requirements for encapsulated Devices “nC”;
– requirements for electrical connections expanded and clarified;
– requirements for luminaire ballasts expanded and clarified;
– requirements for evaluation and testing of motor rotors clarified;
– 15 kV limit for equipment protection by type of protection "n" added;
– spacing requirement for voltages above 10 kV modified;
– requirements for restricted breathing enclosures modified;
– modification to requirements for motor rotors and stators;
– addition of Annex A (informative);
– undated references to IEC 60079-0 included.
This standard is to be used in conjunction with EN 60079-0.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-05-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 94/9/EC. See Annex ZZ.
Annexes ZA, ZY and ZZ have been added by CENELEC.
__________
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SIST EN 60079-15:2011
- 3 - EN 60079-15:2010
Endorsement notice
The text of the International Standard IEC 60079-15:2010 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60034-5 NOTE Harmonized as EN 60034-5.
IEC/TS 60034-17 NOTE Harmonized as CLC/TS 60034-17.
IEC 60068-2-6 NOTE Harmonized as EN 60068-2-6.
IEC 60079-7:2006 NOTE Harmonized as EN 60079-7:2007 (not modified).
IEC 60079-17 NOTE Harmonized as EN 60079-17.
IEC 60079-18 NOTE Harmonized as EN 60079-18.
IEC 60079-29-2 NOTE Harmonized as EN 60079-29-2.
IEC 60297 series NOTE Harmonized in EN 60297 series (not modified).
__________
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SIST EN 60079-15:2011
EN 60079-15:2010 - 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 60034 Series Rotating electrical machines EN 60034 Series
IEC 60034-1 - Rotating electrical machines - EN 60034-1 -
Part 1: Rating and performance
IEC/TS 60034-25 - Rotating electrical machines - CLC/TS 60034-25 -
Part 25: Guidance for the design and
performance of a.c. motors specifically designed
for converter supply
IEC 60061 Series Lamp caps and holders together with gauges - -
for the control of interchangeability and safety
IEC 60061-1 - Lamp caps and holders together with gauges EN 60061-1 -
for the control of interchangeability and safety -
Part 1: Lamp caps
IEC 60068-2-27 2008 Environmental testing - EN 60068-2-27 2009
Part 2-27: Tests - Test Ea and guidance: Shock
IEC 60079-0 2007 Explosive atmospheres - EN 60079-0 2009
Part 0: Equipment - General requirements
IEC 60079-1 - Explosive atmospheres - EN 60079-1 -
Part 1: Equipment protection by flameproof
enclosures "d"
IEC 60079-11 - Explosive atmospheres - EN 60079-11 -
Part 11: Equipment protection by intrinsic
safety "i"
IEC 60112 - Method for the determination of the proof and EN 60112 -
the comparative tracking indices of solid
insulating materials
IEC 60155 - Glow-starters for fluorescent lamps EN 60155 -
IEC 60228 - Conductors of insulated cables EN 60228 -
IEC 60238 - Edison screw lampholders EN 60238 -
IEC 60269-3 - Low-voltage fuses - HD 60269-3 -
Part 3: Supplementary requirements for fuses
for use by unskilled persons (fuses mainly for
household or similar applications) - Examples of
standardized systems of fuses A to F
IEC 60400 - Lampholders for tubular fluorescent lamps and EN 60400 -
starterholders
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SIST EN 60079-15:2011
- 5 - EN 60079-15:2010
Publication Year Title EN/HD Year
IEC 60529 - Degrees of protection provided by enclosures EN 60529 -
(IP Code)
IEC 60598 Series Luminaires EN 60598 Series
IEC 60598-1 (mod) 2008 Luminaires - EN 60598-1 2008
- - Part 1: General requirements and tests + A11 2009
IEC 60598-2 Series Luminaires - EN 60598-2 Series
Part 2: Particular requirements
IEC 60664-1 - Insulation coordination for equipment within low- EN 60664-1 -
voltage systems -
Part 1: Principles, requirements and tests
IEC 60927 - Auxiliaries for lamps - Starting devices (other EN 60927 -
than glow starters) - Performance requirements
IEC 60947-7-1 - Low-voltage switchgear and controlgear - EN 60947-7-1 -
Part 7-1: Ancillary equipment - Terminal blocks
for copper conductors
IEC 60947-7-2 - Low-voltage switchgear and controlgear - EN 60947-7-2 -
Part 7-2: Ancillary equipment - Protective
conductor terminal blocks for copper conductors
IEC 60998-2-4 - Connecting devices for low voltage circuits for EN 60998-2-4 -
household and similar purposes -
Part 2-4: Particular requirements for twist-on
connecting devices
IEC 60999-1 - Connecting devices - Electrical copper EN 60999-1 -
conductors - Safety requirements for screw-type
and screwless-type clamping units -
Part 1: General requirements and particular
requirements for clamping units for conductors
from 0,2 mm² up to 35 mm² (included)
IEC 60999-2 - Connecting devices - Electrical copper EN 60999-2 -
conductors - Safety requirements for screw-type
and screwless-type clamping units -
Part 2: Particular requirements for clamping
units for conductors above 35 mm² up to 300
mm² (included)
IEC 61048 - Auxiliaries for lamps - Capacitors for use in EN 61048 -
tubular fluorescent and other discharge lamp
circuits - General and safety requirements
IEC 61184 - Bayonet lampholders EN 61184 -
IEC 61195 - Double-capped fluorescent lamps - Safety EN 61195 -
specifications
IEC 61347-1 (mod) 2007 Lamp controlgear - EN 61347-1 2008
Part 1: General and safety requirements
IEC 61347-2-1 - Lamp controlgear - EN 61347-2-1 -
Part 2-1: Particular requirements for starting
devices (other than glow starters)
IEC 61347-2-2 - Lamp controlgear - EN 61347-2-2 -
Part 2-2: Particular requirements for d.c. or a.c.
supplied electronic step-down convertors for
filament lamps
IEC 61347-2-3 - Lamp controlgear - EN 61347-2-3 -
Part 2-3: Particular requirements for a.c.
supplied electronic ballasts for fluorescent lamps
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SIST EN 60079-15:2011
EN 60079-15:2010 - 6 -
Publication Year Title EN/HD Year
IEC 61347-2-4 - Lamp controlgear - EN 61347-2-4 -
Part 2-4: Particular requirements for d.c.
supplied electronic ballasts for general lighting
IEC 61347-2-7 - Lamp controlgear - EN 61347-2-7 -
Part 2-7: Particular requirements for d.c.
supplied electronic ballasts for emergency
lighting
IEC 61347-2-8 - Lamp controlgear - EN 61347-2-8 -
Part 2-8: Particular requirements for ballasts for
fluorescent lamps
IEC 61347-2-9 - Lamp controlgear - EN 61347-2-9 -
Part 2-9: Particular requirements for ballasts for
discharge lamps (excluding fluorescent lamps)
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SIST EN 60079-15:2011
- 7 - EN 60079-15:2010
Annex ZY
(informative)
Significant changes between this European Standard and EN 60079-15:2005
This European Standard supersedes EN 60079-15:2005.
The significant changes with respect to EN 60079-15:2005 are as listed below.
Type
Minor and Extension Substantial
editorial change
changes regarding
a
ESR´s
Addition of Equipment Protection Levels X
Removal of the requirements for Energy-limited "nL" and
X
associated energy limited apparatus "[nL]"
Removal of the requirements for Encapsulated Devices "nC" X
Requirements for electrical connections expanded and
X
clarified
Requirements for luminaire ballasts expanded and clarified X
Requirements for evaluation and testing of motors rotors
X
clarified
15 kV limit for Equipment protection by type of protection "n"
X
added
Spacing requirement for voltages above 10 kV modified X
Requirements for restricted breathing enclosures modified X
Modification to requirements for motor rotors and stators X
Addition of Annex A (informative): Information on installation
of nA machines to be considered for eventual inclusion into X
IEC 60079-14
a
ESR = Essential Health and Safety Requirements (Annex II of Directive 94/9/EC)
General conclusion on the change of the State of the Art by this standard
CENELEC/TC 31 as the responsible committee has concluded that this new edition does not contain
substantial changes regarding the ESRs.
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SIST EN 60079-15:2011
EN 60079-15:2010 - 8 -
Annex ZZ
(informative)
Coverage of essential requirements of the directive 94/9/EC
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers only the
following essential safety requirements out of those given in Annex II of the EC Directive 94/9/EC:
ESR Equivalent requirement in EN 60079-15:2005
1.0.1 dash 2 Definition 3.7 of EN 60079-15 and principles of the type of protection "n" for gas
atmospheres
1.0.2 Definition 3.7 and Notes of EN 60079-15 and reference to EN 60079-0
1.0.3 Reference to EN 60079-0
1.0.4 Reference to EN 60079-0
1.0.5 Clause 24 of EN 60079-15 and reference to EN 60079-0
1.0.6 Clause 25 of EN 60079-15 and reference to EN 60079-0
1.1 Reference to EN 60079-0
1.2.1 Generally covered by EN 60079-15 and EN 60079-0
1.2.2 Reference to EN 60079-0
1.2.3 Not applicable. Release of flammable material is not foreseen
1.2.4 Not applicable. Dust atmospheres and deposits are out of scope
1.2.5 Reference to EN 60079-0
1.2.6 Warning label deemed adequate for Category 3 Equipment
1.2.7 Reference to EN 60079-0 and relevant standards for normal industrial applications.
1.2.8 Not specifically applied to Category 3 Equipment but covered in general for normal
conditions by the installation requirements in EN 60079-14
1.2.9 Clause 17 of EN 60079-15
1.3.1 Principle of the type of protection "n" as far as applicable and reference to EN 60079-0
1.3.2 Reference to EN 60079-0
1.3.3 Reference to EN 60079-0
1.3.4 Clauses 8.7 of EN 60079-15 and reference to EN 60079-0
1.3.5 Not applicable to electrical equipment
1.4 Reference to EN 60079-0
1.5.1 Clause 12 in respect of charging of batteries
1.5.2 to 1.5.8 Not applicable
1.6.1 to 1.6.3 Not applicable
1.6.4 Reference to EN 60079-0
1.6.5 Not applicable
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SIST EN 60079-15:2011
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ESR Equivalent requirement in EN 60079-15:2005
2.0, 2.1 and 2.2 Not applicable – out of scope
2.3.1 Fundamental basis of EN 60079-15 and references to EN 60079-0
2.3.2 Not applicable – out of scope
3 Not applicable – out of scope
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SIST EN 60079-15:2011
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SIST EN 60079-15:2011
IEC 60079-15
®
Edition 4.0 2010-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Explosive atmospheres –
Part 15: Equipment protection by type of protection "n"
Atmosphères explosives –
Partie 15: Protection du matériel par mode de protection « n »
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 29.260.20 ISBN 978-2-88910-045-3
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 60079-15:2011
– 2 – 60079-15 © IEC:2010
CONTENTS
FOREWORD.8
1 Scope.10
2 Normative references .14
3 Terms and definitions .15
4 General .17
4.1 Equipment grouping and temperature classification .17
4.2 Potential ignition sources .17
5 Temperatures .17
5.1 Maximum surface temperature .17
5.2 Small components .18
6 Requirements for electrical equipment.18
6.1 General .18
6.2 Opening times .18
6.3 Minimum degree of protection .18
6.3.1 General .18
6.3.2 Degree of protection provided by installation .18
6.4 Clearances, creepage distances and separations .18
6.4.1 General .18
6.4.2 Determination of working voltage.19
6.4.3 Conformal coating .19
6.4.4 Comparative tracking index (CTI) .19
6.4.5 Measurement of creepage and clearance .19
6.4.6 Compound filled cable sealing boxes.21
6.5 Electric strength .26
6.5.1 Insulation from earth or frame.26
6.5.2 Insulation between conductive parts .26
7 Connection facilities and terminal compartments .27
7.1 General .27
7.2 Field wiring connections .27
7.2.1 General .27
7.2.2 Connections made using terminals complying with IEC 60947-7-1,
IEC 60947-7-2, IEC 60999-1, or IEC 60999-2 .28
7.2.3 Field wiring connection facilities integral to “n” equipment or
components.28
7.2.4 Connections designed to be used with cable lugs and similar devices .28
7.2.5 Connections using permanent arrangements .28
7.3 Factory connections .28
7.3.1 General .28
7.3.2 Field wiring connection methods used for factory connections .28
7.3.3 Other factory connections.28
7.3.4 Permanent connections .28
7.3.5 Pluggable connections.29
7.3.6 Terminal bridging connections .29
8 Supplementary requirements for non-sparking electrical machines .29
8.1 General .29
8.2 Machine enclosure .30
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SIST EN 60079-15:2011
60079-15 © IEC:2010 – 3 –
8.3 Terminal boxes.30
8.4 Conduit stopping boxes, cable sealing and dividing boxes.30
8.5 Connection facilities for external conductors.30
8.6 Neutral point connections .30
8.7 Radial air gap.31
8.8 Rotor cages.31
8.8.1 Rotor cages built from bars connected to end rings .31
8.8.2 Cast rotor cages .31
8.8.3 Assessment for possible air gap sparking .31
8.9 Stator winding insulation system .32
8.10 Surface temperature limitation.33
8.10.1 Prevention of thermal ignition .33
8.10.2 Operation with a frequency convertor or a non-sinusoidal supply.33
9 Supplementary requirements for non-sparking fuses and fuse assemblies.34
9.1 Fuses .34
9.2 Temperature class of equipment.34
9.3 Fuse mounting .34
9.4 Fuse enclosures .34
9.5 Replacement fuse identification.34
10 Supplementary requirements for non-sparking plugs and sockets.34
10.1 Plugs and sockets for external connections .34
10.2 Maintaining degree of protection (IP code) .35
10.3 Sockets that do not have plugs inserted in normal operation .35
11 Supplementary requirements for non-sparking luminaires.35
11.1 General .35
11.2 Construction.35
11.2.1 General .35
11.2.2 Enclosure of lamp.36
11.2.3 Lampholders.36
11.2.4 Auxiliaries.37
11.2.5 Creepage distances and clearances .38
11.2.6 Terminals .39
11.2.7 Internal wiring.39
11.3 Luminaires for tubular fluorescent bi-pin lamps.39
11.3.1 General .39
11.3.2 Maximum ambient temperature.39
11.3.3 Temperature class.39
11.3.4 Endurance tests and thermal tests.40
11.3.5 Resistance to dust and moisture.41
11.3.6 Insulation resistance and electric strength .41
11.4 Other equipment containing light sources .41
12 Supplementary requirements for equipment incorporating non-sparking cells and
batteries .41
12.1 General .41
12.2 Categorization of cells and batteries.41
12.2.1 Type 1 cells and batteries.41
12.2.2 Type 2 cells and batteries.42
12.2.3 Type 3 cells and batteries.42
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SIST EN 60079-15:2011
– 4 – 60079-15 © IEC:2010
12.3 General requirements for cells and batteries of types 1 and 2 .43
12.3.1 General .43
12.3.2 Maximum capacity.43
12.3.3 Secondary cells.43
12.3.4 Cell connection .43
12.3.5 Discharge mode .43
12.3.6 Temperature .43
12.3.7 Creepage and clearance .43
12.3.8 Connections .43
12.3.9 Connecting cells in series.43
12.3.10 Deep discharge protection.43
12.3.11 Temperature test conditions .44
12.3.12 Battery packs .44
12.3.13 Battery pack connections .44
12.3.14 Cell electrolyte and gas release .44
12.3.15 Excessive load draw.44
12.4 Charging of type 1 and type 2 cells and batteries .44
12.4.1 Temperature range .44
12.4.2 Charger specifications .44
12.4.3 Charging separated cells or batteries .44
12.4.4 Charger limitations .44
12.4.5 Charging outside the hazardous area .44
12.4.6 Gassing during charging of type 2 cells or batteries.45
12.5 Requirements for type 3 secondary batteries.45
12.5.1 Types of permissible batteries .45
12.5.2 Battery containers
...
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