oSIST prEN 50286:2020
(Main)Electrical insulating protective clothing for low-voltage installations
Electrical insulating protective clothing for low-voltage installations
This document is applicable to electrical insulating protective clothing used by skilled persons when they are working on or near live parts of Iow-voltage installations at nominal voltages up to 500 V AC or 750 V DC.
The purpose of this clothing when used in conjunction with other PPE, such as boots and gloves etc., is to prevent dangerous current from passing through persons when there is a risk of unintentional contact with several live parts located in and around the working area. Where the risk of unintentional contact with live parts is restricted e.g. with live parts in front of the worker, the wearing of this clothing is not essential.
The products designed and manufactured according to 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.
NOTE Some restrictions on the use of this clothing can exist in areas with hot climatic conditions.
Elektrisch isolierende Schutzkleidung für Arbeiten an Niederspannungsanlagen
Vêtements de protection isolants pour installations basse tension
Le présent document s'applique aux vêtements de protection isolants électriques utilisés par les personnes qualifiées lorsqu'elles travaillent sur ou à proximité des parties sous tension des installations à basse tension à des tensions nominales allant jusqu'à 500 V en courant alternatif ou 750 V en courant continu.
Le but de ce vêtement, lorsqu'il est utilisé avec d'autres EPI, comme des bottes, des gants, etc., est d'empêcher le passage d'un courant dangereux à travers les personnes lorsqu'il existe un risque de contact involontaire avec plusieurs parties sous tension situées dans et autour de la zone de travail. Lorsque le risque de contact involontaire avec des parties sous tension est limité, par exemple avec des parties sous tension devant le travailleur, le port de ce vêtement n'est pas indispensable.
Les produits conçus et fabriqués conformément au présent document contribuent à la sécurité des utilisateurs, à condition qu'ils soient utilisés par des personnes qualifiées, conformément à des méthodes de travail en toute sécurité et aux instructions d'utilisation.
NOTE Certaines restrictions d'utilisation de ces vêtements peuvent exister dans les zones où le climat est chaud.
Električno izolacijska zaščitna oblačila za delo na nizkonapetostnih inštalacijah
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 50286:2020
01-oktober-2020
Nadomešča:
SIST EN 50286:2000
Električno izolacijska zaščitna oblačila za delo na nizkonapetostnih inštalacijah
Electrical insulating protective clothing for low-voltage installations
Elektrisch isolierende Schutzkleidung für Arbeiten an Niederspannungsanlagen
Vêtements de protection isolants pour installations basse tension
Ta slovenski standard je istoveten z: prEN 50286
ICS:
13.260 Varstvo pred električnim Protection against electric
udarom. Delo pod napetostjo shock. Live working
13.340.10 Varovalna obleka Protective clothing
oSIST prEN 50286:2020 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 50286:2020
EUROPEAN STANDARD DRAFT
prEN 50286
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2020
ICS Will supersede EN 50286:1999 and all of its
amendments and corrigenda (if any)
English Version
Electrical insulating protective clothing for low-voltage
installations
Vêtements de protection isolants pour installations basse Elektrisch isolierende Schutzkleidung für Arbeiten an
tension Niederspannungsanlagen
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2020-11-13.
It has been drawn up by CLC/TC 78.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CENELEC 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,
Turkey and the United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
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
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 66983 Ref. No. prEN 50286 E
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Contents
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Requirements . 8
4.1 Non-electrical requirements .8
4.1.1 General .8
4.1.2 Design requirements.8
4.1.3 Size designation and fit .8
4.1.4 Comfort .8
4.1.5 Pockets and flaps .8
4.1.6 Closures and seams .8
4.1.7 Additional requirements .9
4.1.8 Limited flame spread .9
4.1.9 Tear resistance .9
4.1.10 Tensile strength . 10
4.1.11 Water-vapour resistance . 10
4.1.12 Water penetration . 10
4.1.13 Dimensional change due to laundering and/or cleaning . 10
4.2 Electrical requirements . 10
4.3 Marking . 10
4.4 Instructions for use . 11
5 Type tests . 11
5.1 General . 11
5.1.1 Overview . 11
5.1.2 Test conditions . 11
5.1.3 Preconditioning by cleaning . 11
5.2 Non-electrical tests . 12
5.2.1 Verifying dimensions and design . 12
5.2.2 Limited flame spread . 12
5.2.3 Tear resistance . 12
5.2.4 Tensile strength . 12
5.2.5 Water-vapour resistance . 12
5.2.6 Water penetration . 12
5.2.7 Dimensional change due to laundering and/or cleaning . 12
5.3 Electrical type tests . 13
5.3.1 General . 13
5.3.2 Proof test . 13
5.4 Marking . 15
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5.5 Instructions for use and periodic inspection . 15
6 Other tests . 15
6.1 Routine tests . 15
6.2 Acceptance tests . 15
6.3 Sampling tests . 16
7 Conformity assessment of electrical insulating protective clothing having completed the
production phase and acceptance tests . 16
8 Modifications . 16
Annex A (normative) Symbol “Double triangle” and example of marking . 17
Annex B (informative) Instructions for use and inspection . 18
B.1 Instructions for use . 18
B.2 Inspection . 18
B.2.1 Inspection before use . 18
B.2.2 Periodic inspection . 18
B.2.3 Visual inspection . 18
B.2.4 Electrical tests . 19
Annex C (normative) Chronological order for type testing . 20
Annex D (informative) Classification of defects . 21
Annex E (informative) Rationale for the classification of defects . 22
Annex ZZ ANNEX ZZ (informative) Relationship between this European standard and the
essential Requirements of Regulation 2016 – 425 . 23
Bibliography . 24
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European foreword
This document (prEN 50286:2020) has been prepared by CLC/TC 78 “Equipment and tools for live
working”.
This document is currently submitted to the Enquiry.
The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
This document will supersede EN 50286:1999 and all of its amendments and corrigenda (if any).
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
This edition includes the following significant technical changes with respect to EN 50286:1999:
— up-date of referenced documents;
— update definitions and terms;
— addition of tear resistance and tensile strength;
— addition of change due to laundering and cleaning;
— up-date of marking and instruction for use;
— up-date on testing conditions;
— update on pre-conditioning;
— up-date of conformity assessment;
— addition of Annex C on classification of defects;
— addition of Annex D on rationale of selection of defects;
— addition of Annex ZZ.
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Introduction
This document complies with the electrical insulating requirements set out by CLC/TC 78 and with the
non-electrical requirements set out by CEN/TC 162. This insulating clothing is recognized as a PPE
according to PPE Regulation 2016-425.
Electrical insulating protective clothing was developed primarily for use by workers for work on low-
voltage overhead lines.
For the moment, there is no withstand test applicable to products where the principle risk is of
unintentional contact with live parts, and such a test is not included in the present document. However,
despite this Iack, it is considered that a satisfactory Ievel of electrical protection is provided by
compliance with this document for both the proof tests and the periodic electrical inspections.
For the moment, no test is available in relation to the risk of workers exposure to an electrical arc
generated by Iow-voltage installations. This task is presently under study by CLC/TC 78 WG 7.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
Terms defined in Clause 3 are given in italic print throughout this document.
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1 Scope
This document is applicable to electrical insulating protective clothing used by skilled persons when they
are working on or near live parts of Iow-voltage installations at nominal voltages up to 500 V AC or 750 V
DC.
The purpose of this clothing when used in conjunction with other PPE, such as boots and gloves etc., is
to prevent dangerous current from passing through persons when there is a risk of unintentional contact
with several live parts located in and around the working area. Where the risk of unintentional contact
with live parts is restricted e.g. with live parts in front of the worker, the wearing of this clothing is not
essential.
The products designed and manufactured according to 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.
NOTE Some restrictions on the use of this clothing can exist in areas with hot climatic conditions.
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.
EN 343:2019, Protective clothing - Protection against rain
EN 60060-1:2010, High-voltage test techniques - Part 1: General definitions and test requirements
(IEC 60060-1:2010)
EN 60060-2:2011, High-voltage test techniques - Part 2: Measuring systems (IEC 60060-2:2010)
1
EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN ISO 811:2018, Textiles - Determination of resistance to water penetration - Hydrostatic pressure test
(ISO 811:2018)
EN ISO 4674-1:2016, Rubber- or plastics-coated fabrics - Determination of tear resistance - Part 1:
Constant rate of tear methods (ISO 4674-1:2016)
EN ISO 5077:2008, Textiles - Determination of dimensional change in washing and drying (ISO
5077:2007)
EN ISO 11092:2014, Textiles - Physiological effects - Measurement of thermal and water-vapour
resistance under steady-state conditions (sweating guarded-hotplate test) (ISO 11092:2014)
EN ISO 13688:2013, Protective clothing - General requirements (ISO 13688:2013)
EN ISO 13934-1:2013, Textiles - Tensile properties of fabrics - Part 1: Determination of maximum force
and elongation at maximum force using the strip method (ISO 13934-1:2013)
EN ISO 13937-2:2000, Textiles - Tear properties of fabrics - Part 2: Determination of tear force of
trouser-shaped test specimens (Single tear method) (ISO 13937-2:2000)
EN ISO 15025:2016, Protective clothing - Protection against flame - Method of test for limited flame
spread (ISO 15025:2016)
IEC 60050-651, International Electrotechnical Vocabulary (IEV) - Part 651: Live working
1
As impacted by EN 60529:1991/A2:2013.
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-651 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
electrical insulating protective clothing
protective clothing which prevents dangerous current from passing through the human body
Example Jacket with hood, trousers and overall are articles of the protective clothing.
3.2
seam
junction of two edges of material which are permanently joined by sewing or any other method
3.3 tests
3.3.1
acceptance test
contractual test to prove to the customer that the article of clothing meets certain conditions of its
specification
[SOURCE: IEC 60050-151: 2001, 151-16-23, modified – “item” is replaced by “article of clothing”]
3.3.2
proof test
specified voltage test that is applied to an article of clothing for the time defined under specified
conditions to assure that the electrical strength of the insulation is above a specified value
3.3.3
routine test
test to which each article of clothing is subjected during or after manufacture to ascertain whether it
complies with certain criteria
[SOURCE: IEC 60050-151: 2001, 151-16-17, modified – “item” is replaced by “article of clothing”]
3.3.4
sampling test
test performed on a number of articles of clothing taken at random from a batch
3.3.5
type test
test performed on one or more articles of clothing made to a certain design to show that the design
meets certain specifications
[SOURCE: IEC 60050-151: 2001, 151-16-16, modified – “item” is replaced by “article of clothing]
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4 Requirements
4.1 Non-electrical requirements
4.1.1 General
General requirements for electrical insulating protective clothing for low-voltage installations which are
not specifically covered in this this document shall be in accordance with EN ISO 13688:2013.
4.1.2 Design requirements
The electrical insulating protective clothing shall consist of a jacket with hood and trousers or an overall
with a hood.
No metal parts shall be on the outside of the electrical insulating protective clothing.
The colour of the electrical insulating protective clothing shall be bright.
A red colour is recommended. This colour may differ from colour code marking (the IEC code for Class
00 is beige).
4.1.3 Size designation and fit
The dimensions of the electrical insulating protective clothing shall be in accordance with the
requirements of EN ISO 13688:2013, Clause 6.
The dimensions of the electrical insulating protective clothing shall be selected in such a way that this
clothing can be worn over the normal working clothing. The bottoms of the trousers or overall legs shall
be wide enough to be worn over footwear.
Where protection is provided by a two-piece suit, sufficient overlap shall be ensured. It shall be
determined, that when correctly sized for the wearer, an overlap between the jacket and trousers
remains when one standing wearer firstly fully extends both arms above the head and then bends over
until the fingertips touch the ground when tested according to 5.2.1.
4.1.4 Comfort
The comfort of the electrical insulating protective clothing shall be in accordance with the requirements
of EN ISO 13688:2013, 4.4.
4.1.5 Pockets and flaps
The number of pockets in the protective clothing shall be limited to two. The protective suit shall have
one pocket for the jacket and one for the trousers. The protective overall shall have two pockets located
in similar positions.
One pocket shall be placed at the chest Ievel to the jacket or the overall. One pocket shall be placed
laterally to the thigh to the trousers. The pockets shall be equipped with flaps which shall have hook and
loop fasteners.
4.1.6 Closures and seams
All seams, except hem-seams, shall be made in such a way that they do not impair the electrical
properties.
Hook and loop fastener should be used.
Cuffs shall be provided with closures to reduce their width.
Any zip-fasteners necessary to close the jacket, the trousers or the overall shall be made from insulating
material. However, if metal parts are used for the slider or for the terminal pieces of the zip-fastener,
they shall be covered with insulating material.
The closures shall be designed with a protective cover flap on the outside of the clothing.
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The length of the zip-fastener shall correspond to the design of the jacket or the overall. The slide
fastener of the zipper shall be designed to lock when completely closed. The flap shall be equipped with
a hook and loop fastener, which covers at least the whole length of the zip-fastener.
The trousers shall be equipped with a fly which is closed over its length by a zip-fastener. The fly shall
be covered by a flap which shall have a hook and loop fastener over the whole length.
4.1.7 Additional requirements
The hood shall be securely attached to the jacket or overall.
The hood front edge shall be designed to fit closely to the face, face shields and/or to the insulating
helmets. If a cord is used, it shall be made of electrical insulating material, shall be flame retardant and
shall be taken into a cord tunnel.
The trousers shall be equipped with braces which shall be securely connected to the trousers and shall
be adjustable or elasticated.
4.1.8 Limited flame spread
All outer layer and innermost layer materials except for an intermediate layer that is used for specific
protection other than heat protection, for example electrical insulation, shall fulfil the following
requirements in Table 1 (testing in accordance with 5.2.2):
Table 1 — Outer and innermost layer materials
Property Requirement
Flame No specimen shall permit any part of the lowest boundary of any flame to reach the
spread upper or either vertical edge.
Flaming No specimen shall give flaming or molten debris.
debris
Hole No specimen shall give hole formation of 5 mm or greater in any direction, except for
formation an interlining that is used for specific protection other than heat and flame protection.
Afterglow Afterglow time shall be ≤ 2 s.
A glowing inside the charred area is defined in ISO 15025 as afterglow without
combustion and for the purpose of this clause is not regarded as afterglow.
After-flame After-flame time shall be ≤ 2 s.
In addition, if the clothing consists of more than two layers, each intermediate layer shall fulfil Table 2:
Table 2 — Intermediate layer material
Property Requirement
Flame spread No specimen shall permit any part of the lowest boundary of any flame to reach
the upper or either vertical edge.
Flaming debris No specimen shall give flaming or molten debris.
Afterglow Afterglow time shall be ≤ 2 s.
A glowing inside the charred area is defined in ISO 15025 as afterglow without
combustion and for the purpose of this clause is not regarded as afterglow.
4.1.9 Tear resistance
Woven and laminated outer material shall have a tear resistance of at least 15 N for weight higher than
2 2
220 g/m or at least 10 N for weight of 220 g/m or below in the machine and the cross directions when
tested according to 5.2.3.
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4.1.10 Tensile strength
Woven and laminated outer material shall have a tensile strength of at least 400 N for weight higher
2 2
than 220 g/m or at least 250 N for weight of 220 g/m or below in the machine and the cross directions
when tested according to 5.2.4.
4.1.11 Water-vapour resistance
2
The textile material water-vapour resistance R value shall not exceed 25 Pa m /W according class 3
et
of EN 343:2019, Table 3 (testing in accordance with 5.2.5).
4.1.12 Water penetration
The first water-drop on the textile material as well as the seams shall not penetrate below 13 000 Pa
according class 3 of EN 343:2019 (testing in accordance with 5.2.6).
4.1.13 Dimensional change due to laundering and/or cleaning
Woven and laminated outermost and innermost material shall have a dimensional change not
exceeding ± 3 % in either length or width direction when tested according to 5.2.7.
Knitted outermost and innermost material shall have a dimensional change not exceeding ± 5 % when
tested according to 5.2.7.
NOTE To verify the shrinkage of each single layer in a multi-layer assembly, it can be helpful to test the
assembly closed by sewing around the edges.
4.2 Electrical requirements
The protective clothing material shall pass a dielectrical proof test, in accordance with 5.3.2, of:
— 2,5 kV under dry conditions;
— 2,0 kV under moisture conditions;
— 1,5 kV after rain.
4.3 Marking
The marking shall meet the general requirements of marking in ISO 13688:2013, 7.1.
The outer side of each of the flaps of the pockets on the jacket, trousers and overall shall be marked
with the symbol double triangle with the dimensions X = 16 mm or 25 mm assigned with “500 V” or
colour code beige, for the whole Iabel (see Figure A.1).
Each article of protective clothing shall be marked on the inner side of the clothing.
Additional marking for electrical use shall be the following:
— postal address to which they can be contacted;
— symbol IEC 60417-5216:2002-10 – Suitable for live working; double triangle (see Annex A
Figure A.1);
NOTE The exact ratio of the height of the figure to the base of the triangle is 1,43. For the purpose of
convenience, this ratio can be between the values of 1,4 and 1,5.
— number of the relevant EN standard immediately adjacent to the symbol (EN 50286) followed by
the date of publication (2020).
The marking or label shall not impair the quality of the protective clothing.
It shall be durable and shall remain visible after being subjected to a durability test.
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The suitable panel consists of, e.g. a linen strip of at least 60 mm x 80 mm on which marking shall be
applied to indicate date of periodic inspections.
The panel may be combined with the marking Iabel.
Any additional marking or label shall be subject to agreement between the manufacturer and the
customer.
4.4 Instructions for use
Instructions for use shall be in accordance with EN ISO 13688:2013, Clause 8 (except 8 a)) for general
purpose and additional instructions for electrical use as follows:
— explanation of the symbol “double triangle”;
— information that working on or near live parts of overhead lines shall cease if thunderstorms or rain
showers are perceptible at the working site;
— instruction for use and maintenance in respect of potential risk of loss of protection due to ageing,
limited effectiveness of insulation according to the conditions of use.
— information that the electrical protective clothing shall only be used for working on or near live parts
of low-voltage installations at nominal voltage up to 500 V AC or 750 V DC;
— guidance to the use of electrical insulating protective clothing (see B.1);
— information about examination before use and periodic inspection (see B.2) and in which manner
they shall be marked on the marking panel.
5 Type tests
5.1 General
5.1.1 Overview
Type tests shall be performed according to Annex C and in the given sequence. Unless otherwise
specified, the number of test specimen is 3.
The dimensions of the test specimen are given in each test description.
5.1.2 Test conditions
Unless otherwise specified the tests shall be carried out at a temperature between 15 °C and 35 °C and
a relative humidity of 25 % to 75 % starting not later than 5 min after the item under test is taken from
the conditioning atmosphere.
For all the following tests the conditioning atmosphere shall be the temperature (20 ± 2) °C and relati
...
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