SIST EN 60079-35-2:2012

• Abstract:

  IEC 60079-35-2:2011 details those performance and other safety features of caplights, including those with a point of connection for another equipment, not covered in IEC 60079-35-1, but which are important for the safety and working conditions of the user. It may also be applied to caplights for use in mines not likely to be endangered by firedamp. This first edition of IEC 60079-35-2 cancels and replaces the second edition (2005) of IEC 62013-2 published in 2005 and constitutes a full technical revision. The general revision and updating of Edition 2 of IEC 62013-2 has been necessitated by the advent of new technologies related to caplight design, in particular those related light-emitting diode (LED) light sources. It is intended that there should be a stronger link between Part 1 (Construction) and Part 2 (Performance) of this Standard by upgrading the reference in the Scope of part 1 from a note to a requirement. In addition as this Standard is now to become one of the IEC 60079 series, changes have been made to bring it more in line with others in the series by cross referencing. This has enabled there to be a reduction in the number and length of clauses in the Standard.

• Status: Published
• Publication Date: 23-Sep-2012
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• ICS: 73.100.20 - Ventilation, air-conditioning and illumination equipment
• Technical Committee: EXP - Product for explosive atmospheres
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 30-Aug-2012
• Due Date: 04-Nov-2012
• Completion Date: 24-Sep-2012
• Directive: 94/9/EC - Equipment and protective systems intended for use in potentially explosive atmospheres (ATEX)
• Ref Project: EN 60079-35-2:2012 - Explosive atmospheres - Part 35-2: Caplights for use in mines susceptible to firedamp - Performance and other safety-related matters

• Refers: SIST EN ISO 80000-1:2023 - Quantities and units - Part 1: General (ISO 80000-1:2022)
• Effective Date: 09-Feb-2026
• Refers: SIST EN ISO 10692-1:2002 - Gas cylinders - Gas cylinder valve connections for use in the microelectronics industry - Part 1: Outlet connections (ISO 10692-1:2001)
• Effective Date: 09-Feb-2026
• Refers: SIST EN 60079-35-1:2011 - Caplights for use in mines susceptible to firedamp - Part 1: General requirements - Construction and testing in relation to the risk of explosion (IEC 60079-35-1:2011)
• Effective Date: 03-Feb-2026
• Refers: SIST EN 60983:2001 - Miniature lamps
• Effective Date: 03-Feb-2026
• Referred By: SIST EN 12405-2:2013 - Gas meters - Conversion devices - Part 2: Energy conversion
• Effective Date: 09-Feb-2026
• Referred By: SIST EN 16314:2013 - Gas meters - Additional functionalities
• Effective Date: 09-Feb-2026
• Revised: SIST EN 62013-2:2006 - Caplights for use in mines susceptible to firedamp -- Part 2: Performance and other safety-related matters
• Effective Date: 06-May-2014

SIST EN 60079-35-2:2012 is the Slovenian national standard for caplights used in mines susceptible to firedamp, identical to EN 60079-35-2:2012 and IEC 60079-35-2:2011. It specifies performance and other safety-related matters for caplights, including caplights with a point of connection for other equipment, so manufacturers, mine operators and testers can judge whether the lamp is suitable for use and routine checking. The document is the performance companion to IEC 60079-35-1, which covers construction and explosion-risk testing.

What does SIST EN 60079-35-2:2012 specify?

SIST EN 60079-35-2:2012 covers the performance and safety features of caplights that are not covered in IEC 60079-35-1 but matter for user safety and working conditions. It also says the standard may be applied to caplights for mines not likely to be endangered by firedamp.

The document is organized into:

• Clause 1 Scope
• Clause 2 Normative references
• Clause 3 Terms and definitions
• Clause 4 Light output
• Clause 5 Reliability
• Clause 6 Ergonomics
• Clause 7 Type tests - Illumination throughout the useful working period
• Clause 8 Instructions
• Clause 9 Marking
• Annex A, informative, with examples of routine testing by the user

Annex A also includes a typical photometric sphere drawing and a table for recording test results.

What are the key requirements of SIST EN 60079-35-2:2012?

Light output

SIST EN 60079-35-2:2012 requires the headpiece to have at least two light sources, with one main source meeting the standard. A single non-filament source is allowed if it meets the lamp life requirement. In practice, this means the caplight must still give usable light if one source is only auxiliary or if a single LED-type source is used.

The main beam must point 10 degrees, plus or minus 5 degrees, down from the horizontal when the caplight is worn normally. At the end of the useful working period, the main light must still provide the required cone of light, with a minimum of 1 cd in the defined field and a maximum illumination of at least 1 500 cd at 1 m. This matters because the wearer needs a predictable beam pattern at the end of a shift.

For non-filament sources, the colour correlated temperature (CCT) must be greater than 5 000 K and the colour rendering index (CRI) greater than 70, unless the manufacturer specifies other values in the instructions. That helps users compare LED-based caplights and understand the light quality they will get.

Reliability and ergonomics

Clause 5 sets life expectations for filament and non-filament sources, including minimum lives for main and auxiliary sources and a 5 000 h life for a single non-filament source. The caplight also has to keep meeting the light-output requirement after the stated life. Battery cyclic life is not fixed; instead, the manufacturer must tell the user the recharge time and routine checks needed for safe use.

Clause 6 addresses practical use in the mine. The battery and container mass, the total caplight mass, switch accessibility, maintainability, and headpiece security are all covered. The caplight must not be too heavy, must be easy to switch on while worn, must allow user-replaceable parts to be reached, and must provide a tether for helmet-mounted units where required.

Type testing, instructions and marking

Clause 7 gives the type test for illumination throughout the useful working period. The test uses a darkened room or enclosure at 23 °C plus or minus 2 °C, a fully charged battery, and a calibrated photometric setup at 1 000 mm. This is the proof test for the declared useful working period.

Clause 8 requires a manual with safe use, useful working period, minimum illumination, permitted light source types, user checks, user-replaceable parts, special tools, battery disposal instructions, and any non-standard CCT/CRI values.

Clause 9 requires marking with the manufacturer name or trademark, type identification, the standard number, and a date or code for battery container or cells.

What terms does SIST EN 60079-35-2:2012 define?

• Useful working period - the manufacturer-declared time, in hours, during which the main light source can run continuously and still meet the minimum luminous intensity requirement.
• Main light source - the source that carries the principal lighting duty and has to meet the performance requirements of the standard.
• Auxiliary light source - a secondary source intended mainly for emergency use if the main source fails.
• Colour correlated temperature (CCT) - the colour characteristic of a non-filament source, used here to control the whiteness of the light.
• Colour rendering index (CRI) - a measure of how well the light shows colours, used here for non-filament sources.
• Caplight - a lamp assembly worn on a helmet or cap for mining work.
• Firedamp - mine gas hazards that make explosive atmospheres a concern.

Who uses SIST EN 60079-35-2:2012?

Caplight manufacturers use this standard to design light output, life, ergonomics, instructions and marking. Mining operators and mine safety staff use it when selecting lamps, setting recharge and inspection routines, and checking whether a caplight remains suitable during service.

Testing laboratories and certification bodies use it for type testing, photometric measurement and review of declarations. Quality managers and buyers use it to compare products on beam pattern, endurance, mass, maintenance access and user information.

What changed in SIST EN 60079-35-2:2012 from the previous edition?

SIST EN 60079-35-2:2012 supersedes EN 62013-2:2006, and IEC 60079-35-2:2011 replaces IEC 62013-2:2005. The revision is described as a full technical update, driven especially by LED light-source technology. It also strengthens the link with Part 1 and aligns the document more closely with the IEC 60079 series through cross-referencing.

Which standards are used with SIST EN 60079-35-2:2012?

• IEC 60050-845 - provides lighting vocabulary used for the terms in the standard.
• IEC 60983 - covers miniature lamps and is used for filament lamp requirements.
• IEC 60079-35-1 - gives the construction and explosion-risk requirements for caplights and is the main companion part.
• ISO 80000-1 - provides the general quantities and units used in the definitions and measurements.

What does the SIST EN 60079-35-2:2012 document contain?

The document contains a photometric performance requirement for the beam, a life and durability framework, ergonomics limits, a laboratory type test for illumination over the useful working period, and user-information and marking rules. Annex A gives practical examples of how users can carry out routine testing, including a photometric sphere method and a results table for lamp-room records.

Figure A.1 shows a typical photometric sphere arrangement for measuring luminous flux. Table A.1 gives a simple way to tabulate tests, faults and corrective action for caplights in service.

SLOVENSKI STANDARD
01-oktober-2012
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SIST EN 62013-2:2006
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Caplights for use in mines susceptible to firedamp - Part 2: Performance and other safety
-related matters (IEC 60079-35-2:2011)
Explosionsfähige Atmosphäre - Teil 35-2: Kopfleuchten für die Verwendung in
schlagwettergefährdeten Grubenbauen - Gebrauchstauglich­keit und andere
sicherheitsrelevante Themen (IEC 60079-35-2:2011)
Lampes-chapeaux utilisables dans les mines grisouteuses - Partie 2: Performance et
autres sujets relatifs à la sécurité (CEI 60079-35-2:2011)
Ta slovenski standard je istoveten z: EN 60079-35-2:2012
ICS:
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
73.100.20 3UH]UDþHYDOQD Ventilation, air-conditioning
NOLPDWL]DFLMVNDLQ and illumination equipment
UD]VYHWOMHYDOQDRSUHPD
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60079-35-2
NORME EUROPÉENNE
August 2012
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN 62013-2:2006

English version
Explosive atmospheres -
Part 35-2: Caplights for use in mines susceptible to firedamp -
Performance and other safety-related matters
(IEC 60079-35-2:2011)
Atmosphères explosives -  Explosionsfähige Atmosphäre -
Partie 35-2: Lampes chapeaux utilisables Teil 35-2: Kopfleuchten für die
dans les mines grisouteuses - Verwendung in schlagwettergefährdeten
Performances et autres sujets relatifs à la Grubenbauen -
sécurité Gebrauchstauglichkeit und andere
(CEI 60079-35-2:2011) sicherheitsrelevante Themen
(IEC 60079-35-2:2011)
This European Standard was approved by CENELEC on 2012-01-11. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

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

© 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-35-2:2012 E
Foreword
The text of document 31/955/FDIS, future edition 1 of IEC 60079-35-2, prepared by IEC/TC 31
"Equipment for explosive atmospheres" was submitted to the IEC-CENELEC parallel vote and approved
by CENELEC as EN 60079-35-2:2012.

The following dates are fixed:
(dop) 2013-02-10
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2015-01-11

standards conflicting with the
document have to be withdrawn
This document supersedes EN 62013-2:2006.
The general revision and updating of EN 62013-2:2006 has been necessitated by the advent of new
technologies related to caplight design, in particular those related light-emitting diode (LED) light sources.
It is intended that there should be a stronger link between Part 1 (Construction) and Part 2 (Performance)
of this standard by upgrading the reference in the scope of part 1 from a note to a requirement.
In addition, as this standard is now to become one of the EN 60079 series, changes have been made to
bring it more in line with others in the series by cross referencing. This has enabled there to be a
reduction in the number and length of clauses in the standard.
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.
Endorsement notice
The text of the International Standard IEC 60079-35-2:2011 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 60079-35-2:2012
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

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 60050-845 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 845: Lighting
IEC 60079-35-1 - Explosive atmospheres - EN 60079-35-1 -
Part 35-1: Caplights for use in mines
susceptible to firedamp - General
requirements - Construction and testing in
relation to the risk of explosion

IEC 60983 - Miniature lamps EN 60983 -

ISO 80000-1 - Quantities and units - - -
Part 1: General
IEC 60079-35-2 ®
Edition 1.0 2011-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Explosive atmospheres –
Part 35–2: Caplights for use in mines susceptible to firedamp – Performance
and other safety-related matters

Atmosphères explosives –
Partie 35-2: Lampes chapeaux utilisables dans les mines grisouteuses –
Performances et autres sujets relatifs à la sécurité

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
M
CODE PRIX
ICS 29.260.20 ISBN 978-2-88912-818-1
– 2 – 60079-35-2 © IEC:2011
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Light output . 5
4.1 Light sources . 5
4.2 Light source holder . 6
4.3 Luminous intensity and illuminance . 6
4.4 Auxiliary light source . 6
4.5 Focus . 6
4.6 Chromaticity . 6
5 Reliability . 6
5.1 Lamp life . 6
5.2 Battery life (charge/discharge cycles) . 7
5.3 Caplight useful working period . 7
5.4 Durability . 7
5.4.1 Fasteners and connectors . 7
5.4.2 Resistance to abrasion . 7
5.4.3 Operability after mechanical tests . 7
6 Ergonomics . 7
6.1 Mass . 7
6.2 Ease of operation . 8
6.3 Maintainability . 8
6.4 Headpiece security . 8
7 Type tests – Illumination throughout the useful working period . 8
8 Instructions. 9
9 Marking . 9
Annex A (informative) Examples of the manufacturer’s instructions for routine testing
by the user. 10

Figure A.1 – Schematic drawing of a typical photometric sphere . 11

Table A.1 – Tabulation of tests . 12

60079-35-2 © IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
EXPLOSIVE ATMOSPHERES –
Part 35-2: Caplights for use in mines susceptible to firedamp –
Performance and other safety-related matters

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
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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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60079-35-2 has been prepared by IEC technical committee 31:
Equipment for explosive atmospheres.
This first edition of IEC 60079-35-2 cancels and replaces the second edition (2005) of
IEC 62013-2 published in 2005 and constitutes a full technical revision.
The general revision and updating of Edition 2 of IEC 62013-2 has been necessitated by the
advent of new technologies related to caplight design, in particular those related light-emitting
diode (LED) light sources. It is intended that there should be a stronger link between Part 1
(Construction) and Part 2 (Performance) of this Standard by upgrading the reference in the
Scope of part 1 from a note to a requirement.
In addition as this Standard is now to become one of the IEC 60079 series, changes have
been made to bring it more in line with others in the series by cross referencing. This has
enabled there to be a reduction in the number and length of clauses in the Standard.

– 4 – 60079-35-2 © IEC:2011
The text of this standard is based on the following documents:
FDIS Report on voting
31/955/FDIS 31/963/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
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