SIST EN IEC 62819:2023

SLOVENSKI STANDARD
01-julij-2023
Delo pod napetostjo - Ščitniki oči, obraza in glave pred učinki električnega obloka
- Zahtevane lastnosti in preskusne metode (IEC 62819:2022)
Live working - Eye, face and head protectors against the effects of electric arc -
Performance requirements and test methods (IEC 62819:2022)
Arbeiten unter Spannung - Augen-, Gesichts- und Kopfschutz gegen die Auswirkungen
eines Störlichtbogens - Anforderungen und Testmethoden (IEC 62819:2022)
Travaux sous tension - Protecteurs des yeux, du visage et de la tête contre les effets de
l'arc électrique - Exigences de performances et méthode d'essai (IEC 62819:2022)
Ta slovenski standard je istoveten z: EN IEC 62819:2023
ICS:
13.260 Varstvo pred električnim Protection against electric
udarom. Delo pod napetostjo shock. Live working
13.340.20 Varovalna oprema za glavo Head protective equipment
29.260.99 Druga električna oprema za Other electrical equipment for
delo v posebnih razmerah working in special conditions
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62819

NORME EUROPÉENNE
EUROPÄISCHE NORM May 2023
ICS 13.260; 29.240.99; 29.260.99

English Version
Live working - Eye, face and head protectors against the effects
of electric arc - Performance requirements and test methods
(IEC 62819:2022)
Travaux sous tension - Protecteurs des yeux, du visage et Arbeiten unter Spannung - Augen-, Gesichts- und
de la tête contre les effets de l'arc électrique - Exigences de Kopfschutz gegen die Auswirkungen eines Störlichtbogens
performances et méthode d'essai - Anforderungen und Testmethoden
(IEC 62819:2022) (IEC 62819:2022)
This European Standard was approved by CENELEC on 2022-12-21. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62819:2023 E
European foreword
The text of document 78/1397/FDIS, future edition 1 of IEC 62819, prepared by IEC/TC 78 "Live
working" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-11-26
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-05-26
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62819:2022 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 standard indicated:
IEC 60825-1:2014 NOTE Approved as EN 60825-1:2014 (not modified) + A11:2021
IEC 60895 NOTE Approved as EN IEC 60895
ISO 4007:2018 NOTE Approved as EN ISO 4007:2018 (not modified)
ISO 4869-1:2018 NOTE Approved as EN ISO 4869-1:2018 (not modified)
ISO 8980-1:2017 NOTE Approved as EN ISO 8980-1:2017 (not modified)
ISO 8980-2:2017 NOTE Approved as EN ISO 8980-2:2017 (not modified)
ISO/TR 11610:2004 NOTE Approved as CEN ISO/TR 11610:2004 (not modified)
ISO 19011:2018 NOTE Approved as EN ISO 19011:2018 (not modified)
ISO 21987:2017 NOTE Approved as EN ISO 21987:2017 (not modified)
ISO 18526-1:2020 NOTE Approved as EN ISO 18526-1:2020 (not modified)
ISO 18526-4:2020 NOTE Approved as EN ISO 18526-4:2020 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60417 - Graphical symbols for use on equipment. - -
Index, survey and compilation of the
single sheets.
IEC 61318 2021 Live working - Methods for assessment of EN IEC 61318 2021
defects and verification of performance
applicable to tools, devices and
equipment
IEC 61477 2009 Live working - Minimum requirements for EN 61477 2009
the utilization of tools, devices and
equipment
- - + corrigendum Mar. 2010
IEC 61482-1-1 2019 Live working - Protective clothing against EN IEC 61482-1-1 2019
the thermal hazards of an electric arc -
Part 1-1: Test methods - Method 1:
Determination of the arc rating (ELIM,
ATPV and/or EBT) of clothing materials
and of protective clothing using an open
arc
IEC 61482-1-2 2014 Live working - Protective clothing against EN 61482-1-2 2014
the thermal hazards of an electric arc -
Part 1-2: Test methods - Method 2:
Determination of arc protection class of
material and clothing by using a
constrained and directed arc (box test)
IEC 61482-2 (mod) 2018 Live working - Protective clothing against EN 61482-2 2020
the thermal hazards of an electric arc -
Part 2: Requirements
ISO 3758 2012 Textiles - Care labelling code using EN ISO 3758 2012
symbols
ISO 15025 2016 Protective clothing - Protection against EN ISO 15025 2016
flame - Method of test for limited flame
spread
Publication Year Title EN/HD Year
ISO 16321-1 2021 Eye and face protection for occupational EN ISO 16321-1 2022
use - Part 1: General requirements
ISO 16321-2 2021 Eye and face protection for occupational EN ISO 16321-2 2021
use - Part 2: Additional requirements for
protectors used during welding and
related techniques
ISO 16976 series Respiratory protective devices - Human - -
factors
ISO 18526-2 2020 Eye and face protection - Test methods - EN ISO 18526-2 2020
Part 2: Physical optical properties
ISO 18526-3 2020 Eye and face protection - Test methods - EN ISO 18526-3 2020
Part 3: Physical and mechanical
properties
IEC 62819 ®
Edition 1.0 2022-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Live working – Eye, face and head protectors against the effects of electric arc –

Performance requirements and test methods

Travaux sous tension – Protecteurs des yeux, du visage et de la tête contre les

effets de l’arc electrique – Exigences de performances et méthodes d'essai

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.260; 29.240.99; 29.260.99 ISBN 978-2-8322-5690-9

– 2 – IEC 62819:2022 © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols. 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms, symbols and units . 15
4 Requirements . 15
4.1 General . 15
4.2 Design requirements . 15
4.3 Mechanical and optical requirements . 16
4.3.1 Mechanical and optical requirements for a device or the part of a device
covering eyes or face . 16
4.3.2 Mechanical requirements for a device or a part of a device other than
those protecting the eyes or face . 20
4.4 Arc thermal protection requirements . 20
4.4.1 General . 20
4.4.2 General requirements for protective devices or combination of devices . 21
4.4.3 Additional requirements for face shields . 21
4.4.4 Additional requirements for helmets . 21
4.4.5 Protection requirement of protectors protecting against an electric arc . 21
4.4.6 Other requirements for textile components. 22
4.4.7 Performance verification for exposed and not exposed accessories . 22
4.5 Marking . 23
4.6 Instructions for use . 24
5 Test procedures . 26
5.1 General . 26
5.2 Test against the effects of an electric arc . 26
5.2.1 Type tests . 26
5.2.2 Type testing method for the determination of the arc rating values
ATPV, EBT and/or ELIM . 26
5.2.3 Type testing method for the determination of the arc protection class . 32
5.2.4 Testing of protectors intended to provide 360° protection . 35
5.2.5 Additional tests for face shields allowing various wearing distances to
the face or different wearing distances associated with different helmets . 36
5.3 Test report . 37
5.4 Marking . 37
5.4.1 Visual inspection . 37
5.4.2 Durability of marking . 37
5.5 Instructions for use . 37
6 Method of assessment of defects and verification of performance applicable to
protectors having completed the production phase . 37
6.1 General . 37
6.2 Completeness and correctness of assembly . 38
6.3 Product finishing . 38
6.4 Functioning . 38
6.5 Optical properties . 38

IEC 62819:2022 © IEC 2022 – 3 –
6.6 Alternative means to test protectors against the effects of an electric arc
when the production phase has been completed . 38
6.7 Packaging and labelling . 38
7 Modifications . 38
Annex A (normative) Symbol: Protection against the thermal effect of the electric arc
(IEC 60417-6353:2016-02) . 39
Annex B (informative) Marking examples . 40
Annex C (informative) Use and maintenance . 42
C.1 Use . 42
C.2 Maintenance . 42
Annex D (normative) Chronological order of type tests . 43
Annex E (normative) Classification of defects . 45
Annex F (informative) Rationale for the classification of defects . 46
Bibliography . 47

Figure 1 – Reference points . 19
Figure 2 – Schematic view of test set-up, indicating vertical and horizontal positioning
of test head on top of mannequin with respect to arc electrodes for open-arc test . 29
Figure 3 – Test head with four calorimetric sensors for open-arc test . 30
Figure 4 – Test set-up: Schematic view of test set-up, indicating vertical and horizontal
positioning of test head on top of torso with respect to arc electrodes for box-test . 33
Figure 5 – Test head with four calorimetric sensors for the box-test . 34

Table 1 – LT classes . 17
Table 2 – Minimum of specimens mounted on a test head exposed to an arc from the
side and/or the back . 36
Table B.1 – Protective performance information . 41
Table D.1 – List of type tests . 43
Table E.1 – Classification of defects and associated requirements and tests . 45
Table F.1 – Justification for the type of defect . 46

– 4 – IEC 62819:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIVE WORKING – EYE, FACE AND HEAD PROTECTORS
AGAINST THE EFFECTS OF ELECTRIC ARC –
PERFORMANCE REQUIREMENTS AND TEST METHODS

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 responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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.
IEC 62819 has been prepared by IEC technical committee 78: Live working. It is an International
Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
78/1397/FDIS 78/1399/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.

IEC 62819:2022 © IEC 2022 – 5 –
Terms defined in Clause 3 are given in italic print throughout this document.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

– 6 – IEC 62819:2022 © IEC 2022
INTRODUCTION
This document has been prepared in accordance with the requirements of IEC 61477 where
applicable.
The product covered by this document can have an impact on the environment during some or
all stages of its life cycle. These impacts can range from slight to significant, be short-term or
long-term, and occur at the global, regional or local level.
This document does not include requirements and test provisions for the manufacturers of the
product or recommendations to the users of the product for environmental improvement.
However, all parties intervening in its design, manufacture, packaging, distribution, use,
maintenance, repair, reuse, recovery and disposal are invited to take account of environmental
considerations.
IEC 62819:2022 © IEC 2022 – 7 –
LIVE WORKING – EYE, FACE AND HEAD PROTECTORS
AGAINST THE EFFECTS OF ELECTRIC ARC –
PERFORMANCE REQUIREMENTS AND TEST METHODS

1 Scope
This document is applicable to eye, face and head protectors used in work where there is a risk
of exposure to an electric arc hazard.
Such protectors consist of one or several devices (e.g. hood, goggles, balaclavas, face shields,
helmets, etc.), which might need to be combined together in order to give protection to eye,
face and head for the intended use.
This document covers the performance requirements for protectors and single protective
devices considering thermal, optical and mechanical hazards of an electric arc.
Because of the limitations of test apparatus at very high energy arcs, no arc rating above
2 2
4 100 kJ/m (100 cal/cm ) can be assigned to protectors.
This document does not cover protection against electric shock, noise, the consequences of
physical and mental shock and the toxic influences caused by an electric arc.
This document does not cover protectors for work intentionally using an electric arc, e.g. arc
welding, plasma torch.
This document does not cover face-screens for the reduction of an electric field inside
conductive clothing in accordance with IEC 60895.
Any other claims of the manufacturer for protection against other hazards to eye or face (e.g.
welding radiation, hazards occurring during fire-fighting) are outside the scope of the document.
Products designed and manufactured in accordance with this document contribute to the safety
of the users provided they are used by skilled persons, in accordance with safe methods of
work and the instructions for use.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
IEC 60417, Graphical symbols for use on equipment (available at http://www.graphical-
symbols.info/equipment)
IEC 61318:2021, Live working – Methods for assessment of defects and verification of
performance applicable to tools, devices and equipment
IEC 61477:2009, Live working – Minimum requirements for the utilization of tools, devices and
equipment
– 8 – IEC 62819:2022 © IEC 2022
IEC 61482-1-1:2019, Live working – Protective clothing against the thermal hazards of an
electric arc – Part 1-1: Test methods – Method 1: Determination of the arc rating (ELIM, ATPV
and/or EBT) of clothing materials and of protective clothing using an open arc
IEC 61482-1-2:2014, Live working – Protective clothing against the thermal hazards of an
electric arc – Part 1-2: Test methods – Method 2: Determination of arc protection class of
material and clothing by using a constrained and directed arc (box test)
IEC 61482-2:2018, Live working – Protective clothing against the thermal hazards of an electric
arc – Part 2: Requirements
ISO 3758:2012, Textiles – Care labelling code using symbols
ISO 15025:2016, Protective clothing – Protection against flame – Method of test for limited
flame spread
ISO 16321-1:2021, Eye and face protection for occupational use – Part 1: General requirements
ISO 16321-2:2021, Eye and face protection for occupational use – Part 2: Additional
requirements for protectors used during welding and related techniques
ISO 16976 (all parts), Respiratory protective devices – Human factors
ISO 18526-2:2020, Eye and face protection – Test methods – Part 2: Physical optical properties
ISO 18526-3:2020, Eye and face protection – Test methods – Part 3: Physical and mechanical
properties
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
3.1.1
arc protection class
APC
class of arc thermal protection of a product tested in accordance with the
box test method
Note 1 to entry: The arc protection class is characterized by the test energy level of arc exposure (arc energy and
incident energy).
Note 2 to entry: The box test method defines two arc protection classes APC 1 and APC 2.
[SOURCE: IEC 60050-651:2022,651-27-03]

IEC 62819:2022 © IEC 2022 – 9 –
3.1.2
arc rating
quantity, attributed to a product, that describes the protective performance
when tested in accordance with the open arc test
Note 1 to entry: The arc rating can be the arc thermal performance value (ATPV), the breakopen threshold energy
(EBT) or the incident energy limit (ELIM).
2 2
Note 2 to entry: The arc rating values are expressed in kJ/m (cal/cm ).
[SOURCE: IEC 60050-651:2022, 651-27-04]
3.1.3
arc thermal performance value
ATPV
quantity of incident energy attributed to a product that describes its
properties of attenuating the thermal effect of energy generated by an open arc
Note 1 to entry: The ATPV of a product is calculated in principle using logistic regression analysis applied to the
data points obtained from testing a sufficiently large set of test specimens. It is the value of incident energy at which
the heat transfer through the test specimens is enough to reach the Stoll criteria with 50 % probability.
Note 2 to entry: However, the ATPV attributed to a product in accordance with this document is either equal to or
lower than the ATPV of the product calculated by taking only the Stoll criteria into account, depending on whether
the tested specimen(s) fulfil also additional visual design and performance assessment criteria.
Note 3 to entry: Depending on further visual design and performance assessment criteria, the calculation of the
value of the ATPV attributed to a product can be based on a smaller set of test specimens than needed for the
determination of the ATPV by logistic regression analysis.
[SOURCE: IEC 60050-651:2022, 651-27-05, modified – The notes to entry have been added.]
3.1.4
arc thermal protection
degree of thermal protection offered against an electric arc under specific
arc testing conditions indicated by either an arc rating or an arc protection class
[SOURCE: IEC 60050-651:2022, 651-27-06]
3.1.5
auto darkening filter
optical filter which varies the transmittance in the visible region of the spectrum depending on
the presence of light emitted by an electric arc
Note 1 to entry: An auto darkening filter combines a filter with automatically adapting light transmittance with a
passive UV and a passive IR filter. It varies the transmittance in the visible region of the spectrum, depending on the
presence of light emitted by an electric arc. The luminous transmittance of the auto darkening filter has an initial high
value (light state). After ignition of the arc, within a certain switching time, the luminous transmittance of the filter
changes to a low value (dark state). Auto darkening filters include a (clear or tinted) cover plate and a (clear or tinted)
inside plate.
Note 2 to entry: Luminous transmittance (shade), switching time, variations of luminous transmittance
(homogeneity) and angle dependence are the main specific characteristics of an auto darkening filter.
3.1.6
balaclava
one-piece garment designed to fit closely over the entire head and to extend downwards to
cover the neck, but leaving the area of the eyes and at most the area of the eyes, nose and
mouth uncovered
[SOURCE: ISO/TR 11610:2004, 3.22, modified – The area of the head not covered has been
specified.]
– 10 – IEC 62819:2022 © IEC 2022
3.1.7
breakopen
material response evidenced by the formation of one or more openings in
the material specimen
[SOURCE: IEC 60050-651:2022, 651-27-09]
3.1.8
breakopen threshold energy
EBT
quantity of incident energy attributed to a product (material or equipment)
that describes the properties of a breakopen when exposed to heat energy generated by an
open arc test
Note 1 to entry: The EBT of a product is calculated in principle using logistic regression analysis applied to the data
points obtained from testing a sufficiently large set of test specimens. It is the value of incident energy at which
breakopen occurs with 50 % probability.
Note 2 to entry: However, the EBT attributed to a product according to this document is either equal to or lower
than the calculated EBT of the product, depending on whether the tested specimen(s) fulfil also additional visual
design and performance assessment criteria.
Note 3 to entry: Depending on further visual design and performance assessment criteria, the calculation of the
value of the EBT attributed to a product can be based on a smaller set of test specimens than needed for the
determination of the EBT by logistic regression analysis.
[SOURCE: IEC 60050-651:2022, 651-27-10, modified – The notes to entry have been added.]
3.1.9
burning time
time for which a flaming of the test specimen is visible after the end of the electric arc duration
Note 1 to entry: Burning time is expressed in seconds (s).
[SOURCE: IEC 61482-1-1:2019, 3.1.11, modified – The second preferred term has been
deleted.]
3.1.10
component
part of a protective device, such as a window in a hood or a bracket to a face shield
3.1.11
charring
formation of carbonaceous residue as the result of pyrolysis or incomplete combustion
[SOURCE: ISO 17492:2019, 3.3]
3.1.12
chin protector
component specifically designed to protect the chin
EXAMPLE Chin-cups, chin-curtains.
Note 1 to entry: Chin protection can be provided by a scarf, which also protects the neck.

IEC 62819:2022 © IEC 2022 – 11 –
3.1.13
closed hood
bee keeper hood
hood with an integrated face shield
Note 1 to entry: The term "bee keeper hood" is used as a synonym for "closed hood".
Note 2 to entry: In some countries, safety helmets are mandatory for a closed hood design.
3.1.14
device
product (e.g. goggles, eye-guard/eye shield/face shield, balaclava,
helmet), possibly combined with additional products for the side and/or the top of the head
and/or the neck in order to give protection to eye, face and head for the intended use
3.1.15
electric arc
self-maintained gas conduction for which most of the charge carriers are electrons supplied by
primary-electron emission
Note 1 to entry: During live working, the electric arc is generated by gas ionization arising from an unintentional
electrical conducting connection or electric breakdown between live parts or a live part and the earth path of an
electrical installation or an electrical device.
Note 2 to entry: During testing, the electric arc is initiated by the current through a fuse wire and its vaporization.
[SOURCE: IEC 60050-121:1998, 121-13-12, modified – Two notes to entry applicable to live
working have been added.]
3.1.16
electrically insulating helmet
safety helmet which protects the wearer against electric shocks by preventing the passage of
dangerous current through the body via the head
[SOURCE: EN 50365:2002, 3.1]
3.1.17
eye shield
device which provides protection to the eye area
[SOURCE: ISO 4007:2018, 3.5.1.4, modified – In the definition, "protector" has been replaced
by "device".]
3.1.18
face shield
eye protective device covering the eyes and all, or a substantial part, of the face, which can be
mounted directly or by help of an adjustable or non-adjustable carrier on the head using a
support (headband) and/or harness, or mounted by help of an adjustable or non-adjustable
carrier on a helmet
Note 1 to entry: See also visor (3.1.35).
Note 2 to entry: Coverage can include parts or all of the scalp, the ears, the throat and the neck.
Note 3 to entry: The areas to be protected are defined in the relevant standard, and should not automatically be
assumed to be the same as the areas covered.
[SOURCE: ISO 4007:2018, 3.5.1.6, modified – The definition has been modified to include use
of adjustable or non-adjustable carriers. Note 1 to entry has been deleted.]

– 12 – IEC 62819:2022 © IEC 2022
3.1.19
filter
optical filter
lens intended to protect the eye from excessive incident radiation by attenuating that radiation,
generally within a given wavelength range
Note 1 to entry: Attenuation can be by reflection and/or absorption; it might be neutral (i.e. relatively uniform) or
selective (i.e. coloured) across the wavelength range of optical radiation, and might be polarizing.
Note 2 to entry: A notch filter, usually made by multi-layer interference coating, is substantially neutral but has a
pronounced absorption over a narrow bandwidth of wavelengths in order to absorb radiation from, for example, an
LED or laser source.
[SOURCE ISO 4007:2018, 3.10.1.1, modified – The definition has been modified by added
"excessive". Note 3 to entry has been deleted.]
3.1.20
frame
structural component which supports and/or supplements the lens
Note 1 to entry: A frame can be transparent or not.
Note 2 to entry: Chin cups and chin curtains are considered as supplements.
3.1.21
goggle
eye protective device that fully encloses the orbital area and fits firmly on the face
[SOURCE: ISO 4007:2018, 3.5.1.7, modified – In the definition, "protector" has been replaced
by "eye protective device".]
3.1.22
helmet
device which covers a substantial part of the head
[SOURCE: ISO 4869-1:2018, 3.4]
3.1.23
hood
product covering all areas of the head including or not the face and covering the neck (possibly
offering 360° coverage, and if not an integral part of the clothing), covering also the shoulder
area of the protective clothing, and not fitting closely over the entire head, possibly designed
for being supported by a helmet
3.1.24
ignition
initiation of flaming and combustion
[SOURCE: IEC 61482-1-1:2019, 3.1.22]
3.1.25
incident energy
E
i
heat energy resulting from an electric arc, received at a unit surface area
at a specified distance from the electric arc
[SOURCE: IEC 60050-651:2022, 651-27-11]

IEC 62819:2022 © IEC 2022 – 13 –
3.1.26
incident energy limit
ELIM
quantity of incident energy attributed to a product (material or equipment),
below which the values of all product responses are underneath the Stoll curve and without
leading to a breakopen
Note 1 to entry: The ELIM of a material or material assembly is calculated from data points obtained from testing a
set of test specimens, which are also used for the determination of the ATPV and/or EBT.
Note 2 to entry: However, the value of the ELIM attributed to a product in accordance with this document is either
equal to or lower than the calculated ELIM of the product, depending on whether the tested specimen(s) fulfil also
additional visual design and performance assessment criteria.
Note 3 to entry: Depending on further visual design and performance assessment criteria, the calculation of the
value of the ELIM attributed to a product can be based on a smaller set of test specimens than needed for the
determination of the ATPV and/or EBT.
[SOURCE: IEC 60050-651:2022, 651-27-12, modified – Three notes to entry have been added.]
3.1.27
lens
DEPRECATED: ocular
light transmitting part of an eye or face protective device that permits vision
Note 1 to entry: The word "ocular" has mostly been used in Europe, "lens" in many other countries. For the purposes
of eye and face protection, the word "lens" includes a focal lenses, corrective lenses, prescription lenses and is
sometimes also used, for example, in sunglasses, for tinted lenses, although these are generally termed filters.
Note 2 to entry: For the purposes of eye and face protection, the word "lens" includes both lenses covering a single
eye and lenses covering both eyes.
Note 3 to entry: When used as an adjective in eye and face protection standards, the word "ocular" has its normal
dictionary meaning, i.e. relating to the eye.
Note 4 to entry: The lens can be made of glass or plastic.
3.1.28
material
substance of which an item of protective equipment is made
[SOURCE: IEC 60050-651:2022, 651-27-20, modified – In the definition, the words "excluding
hardware" have been deleted.]
3.1.29
open hood
hood where the eyes and part of the face are not covered
Note 1 to entry: It requires additional device(s) for providing eye and full-face protection.
3.1.30
protector
product that can consist of one or more protective devices that offers protective performance
required by this document for the area which is covered by the device
Note 1 to entry: The required protective performance is defined by the corresponding product standard.
[SOURCE: IEC 60050-651:2022, 651-27-22, modified – The type of protective performance is
specified in the definition.]
– 14 – IEC 62819:2022 © IEC 2022
3.1.31
Stoll curve
empirical model used to predict skin burn injury from thermal energy exposure
Note 1 to entry: The Stoll curve defines a relationship between the absorbed energy rate and the human skin
tolerance time.
Note 2 to entry: The Stoll curve is defined in [1].
[SOURCE: IEC 60050-651:2022, 651-27-23]
3.1.32
textile component
part of a device, which is made from textiles
Note 1 to entry: Textile components describe protection relevant components made from textiles, like the textile
part of hoods. Small textile parts, like ribbons or yarns, cannot be arc-rated and are not included in this definition.
3.1.33
trained observer
person trained in testing of eye and face protectors with a binocular visual acuity of a minimum
of 1,0 (6/6 or 20/20) and wearing the appropriate refractive correction, if necessary, for the
observation distance of the test
[SOURCE: ISO 4007:2018, 3.11.1, modified – In the definition, "decimal" has been deleted.]
3.1.34
transmitted incident energy
E
it
incident energy received at a calorimeter when testing a product
Note 1 to entry: Transmitted incident energy is the fraction of the emitted incident energy which is transmitted
through the specimen.
2 2 2 2
Note 2 to entry: Transmitted incident energy is expressed in kJ/m or kWs/m (cal/cm ) where 1 cal/cm =
2 2 2
41,840 kJ/m ; 1 kJ/m = 0,023 900 6 cal/cm .
[SOURCE: IEC 61482-1-2:2014, 3.1.34, modified – The word "incident" has been added to the
term, the words "material or clothing" have been replaced with "a product", and Note 2 to entry
has been extended for clarification.]
3.1.35
visor
eye protector covering either the eye area or both the eye area and all or parts of the face and
offering protective performance required by this document for the area which is covered by the
device
Note 1 to entry: This term has variable common usage:
• it is sometimes used to mean the same as face shield;
• it is sometimes used to mean only the lens and its surround, if any, part of a face shield that provides the
protection to the eyes and face (the deprecated term "window" is sometimes also used for this);
• it is sometimes used to mean the lens and its surround, if any, that is mounted on a helmet; and
• it is sometimes used to mean the lens and its surround, if any, in a full face tight- or loose-fitting respiratory
protective device.
Note 2 to entry: The areas to be protected are defined in the relevant standard and should not automatically be
assumed to be the same as the areas covered.
[SOURCE: ISO 4007:2018, 3.5.1.13, modified – Th
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