Live working - Conductive clothing

IEC 60895:2020 is applicable to conductive clothing, worn during live working (especially bare-hand working) on AC and DC electrical installations, to provide electrical continuity between all parts of the clothing and a reduction of electric field inside the clothing.
This document is applicable to conductive clothing assembled from a conductive garment (jackets and trousers or coveralls forming a one-piece garment) and from conductive component parts (gloves, hoods or helmets, shoes or boots, overshoe socks and socks) in electrical systems with nominal voltage up to 1 000 kV AC and up to ±800 kV DC.
This document does not indicate values of protection from the effects of the electric arc, because any value indicated would not guarantee the necessary protection from the effects of electric arcs, or the operator would need to wear very heavy and rigid conductive clothing, which would not allow the execution of the work in safety.
The products designed and manufactured according to this document contribute to the safety of the users provided they are used by persons trained for the work, in accordance with the live working methods and the instructions for use.
This third edition cancels and replaces the second edition, published in 2002. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) increase of the use up to 1 000 kV AC and ±800 kV DC;
b) introduction of two classes of conductive clothing with different electrical requirements;
c) revision of the electrical requirements of conductive clothing;
d) definition of specific resistance values for each component part of the conductive clothing;
e) introduction of conductive helmet and conductive scarf as component parts of conductive clothing;
f) introduction of mechanical requirements and new tests for fabrics;
g) update of the cleaning test procedures;
h) revision of the efficiency test of the conductive clothing to improve the feasibility and repeatability;
i) preparation of the elements of classification of defects, and general application of IEC 61318:2007;
j) the normative Annex B for the classification of tests has been replaced by normative Annex C for the general type tests procedure, the normative Annex D for the classification of defects and the informative Annex E providing the justification for the classification of defects;
k) the normative Annex C on sampling procedure has been deleted (not applicable according to IEC 61318:2007);
l) modification of the recommended frequency of the periodic tests.

Travaux sous tension - Vêtements conducteurs

IEC 60895: 2020 est applicable aux vêtements conducteurs portés lors des travaux sous tension (en particulier lors du travail au potentiel) sur des installations électriques à courant alternatif et à courant continu pour assurer une continuité électrique entre les différentes parties du vêtement et une réduction du champ électrique à l'intérieur du vêtement.
Le présent document est applicable aux vêtements conducteurs constitués d'un article d’habillement conducteur (vestes et pantalons ou article d’habillement d'une seule pièce) ou de parties composantes conductrices (gants, cagoules ou casques, chaussures ou bottes, couvre-chaussures et chaussettes) dans des systèmes électriques avec une tension nominale allant jusqu'à 1 000 kV en courant alternatif et jusqu'à ±800 kV en courant continu.
Le présent document n'indique pas les valeurs de protection contre les effets des arcs électriques, car les valeurs indiquées ne garantissent pas la protection nécessaire contre les effets des arcs électriques, ou l'opérateur serait contraint de porter des vêtements conducteurs très lourds et rigides, ce qui empêche l'exécution des travaux en toute sécurité.
Les produits conçus et fabriqués conformément au présent document contribuent à la sécurité des utilisateurs, à condition qu'ils soient utilisés par des personnes averties dans le respect des méthodes applicables au travail sous tension et des instructions d'emploi.
Cette troisième édition annule et remplace la deuxième édition, parue en 2002. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) augmentation de l'utilisation jusqu'à 1 000 kV en courant alternatif et ±800 kV en courant continu;
b) introduction de deux classes de vêtements conducteurs avec différentes exigences électriques;
c) révision des exigences électriques du vêtement conducteur;
d) définition de valeurs de résistance spécifiques pour chaque partie composante du vêtement conducteur;
e) introduction du casque conducteur et de l'écharpe conductrice en tant que parties composantes du vêtement conducteur;
f) introduction d'exigences mécaniques et de nouveaux essais pour les tissus;
g) mise à jour des procédures d'essai de nettoyage;
h) révision de l'essai d'efficacité du vêtement conducteur pour améliorer la faisabilité et la répétabilité;
i) préparation des éléments de classification des défauts et application générale de l'IEC 61318:2007;
j) l'Annexe B normative pour la classification des essais a été remplacée par l'Annexe C normative pour la procédure générale des essais de type, l'Annexe D normative pour la classification des défauts et l'Annexe E informative fournissant la justification ayant conduit à ladite classification;
k) l'Annexe C normative sur la procédure d'échantillonnage a été supprimée (non applicable conformément à l'IEC 61318:2007);
l) modification de la fréquence recommandée des essais périodiques.

General Information

Status
Published
Publication Date
19-Apr-2020
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
20-Apr-2020
Ref Project

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IEC 60895
Edition 3.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Live working – Conductive clothing
Travaux sous tension – Vêtements conducteurs
IEC 60895:2020-04(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60895
Edition 3.0 2020-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Live working – Conductive clothing
Travaux sous tension – Vêtements conducteurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.260; 29.240.20; 29.260.01 ISBN 978-2-8322-8099-7

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60895:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 6

INTRODUCTION ..................................................................................................................... 8

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

3 Terms and definitions .................................................................................................... 10

4 Requirements ................................................................................................................ 12

4.1 General ................................................................................................................. 12

4.2 Requirements for conductive clothing .................................................................... 12

4.2.1 Design ........................................................................................................... 12

4.2.2 Classification ................................................................................................. 12

4.2.3 Integrity of the conductive clothing ................................................................. 12

4.2.4 Equipotential bonding .................................................................................... 13

4.2.5 Screening efficiency ...................................................................................... 13

4.2.6 Spark-discharge protection ............................................................................ 13

4.3 Mechanical requirements for the outer layer material ............................................ 13

4.3.1 General ......................................................................................................... 13

4.3.2 Tear resistance .............................................................................................. 13

4.3.3 Burst strength ................................................................................................ 13

4.3.4 Abrasion resistance ....................................................................................... 13

4.4 Requirements for material ..................................................................................... 13

4.4.1 General ......................................................................................................... 13

4.4.2 Flame retardancy ........................................................................................... 14

4.4.3 Electrical resistance ...................................................................................... 14

4.4.4 Current-carrying capability ............................................................................. 14

4.4.5 Shielding efficiency ........................................................................................ 14

4.4.6 Resistance to cleaning ................................................................................... 14

4.5 Specific requirements for component parts ........................................................... 14

4.5.1 Conductive gloves, overshoe socks and socks ............................................... 14

4.5.2 Conductive footwear ...................................................................................... 14

4.5.3 Conductive head cover, scarf and helmet ...................................................... 15

4.5.4 Conductive face screen ................................................................................. 15

4.5.5 Requirements for garment – Electrical resistance .......................................... 15

4.6 Marking ................................................................................................................. 15

4.7 Packaging ............................................................................................................. 16

4.8 Instructions for use ............................................................................................... 16

5 Tests ............................................................................................................................. 16

5.1 General ................................................................................................................. 16

5.2 Mechanical tests for the outer layer material ......................................................... 17

5.2.1 Type test ....................................................................................................... 17

5.2.2 Alternative method to mechanical test in cases where outer layer

materials have completed the production phase............................................. 17

5.3 Tests of the material ............................................................................................. 17

5.3.1 General ......................................................................................................... 17

5.3.2 Flame-retardancy test .................................................................................... 17

5.3.3 Electrical resistance test ................................................................................ 23

5.3.4 Current-carrying capability ............................................................................. 26

---------------------- Page: 4 ----------------------
IEC 60895:2020 © IEC 2020 – 3 –

5.3.5 Shielding efficiency ........................................................................................ 27

5.3.6 Resistance to cleaning ................................................................................... 31

5.3.7 Spark-discharge protection ............................................................................ 33

5.4 Tests of garment – Measurement of electrical resistance ...................................... 34

5.4.1 General ......................................................................................................... 34

5.4.2 Type test ....................................................................................................... 34

5.4.3 Alternative method to electrical resistance test in cases where garments

have completed the production phase ............................................................ 35

5.5 Tests of the complete conductive clothing ............................................................. 35

5.5.1 General ......................................................................................................... 35

5.5.2 Integrity of the conductive clothing ................................................................. 35

5.5.3 Bonding test .................................................................................................. 35

5.5.4 Screening efficiency ...................................................................................... 36

5.6 Tests of the component parts ................................................................................ 43

5.6.1 General ......................................................................................................... 43

5.6.2 Type test ....................................................................................................... 43

5.6.3 Alternative methods in cases where component parts have completed

the production phase ..................................................................................... 51

5.7 Marking ................................................................................................................. 51

5.7.1 Presence and correctness of marking ............................................................ 51

5.7.2 Durability of marking ...................................................................................... 51

5.8 Packaging ............................................................................................................. 51

5.9 Presence and correctness of instructions for use .................................................. 51

6 Conformity assessment of products having completed the production phase ................. 52

7 Modification ................................................................................................................... 52

Annex A (informative) Guidelines for the selection of the maximum voltage class of

conductive clothing in relation to the nominal voltage of an electric system ........................... 53

Annex B (normative) Suitable for live working; double triangle (IEC 60417-5216:2002-10) ... 54

Annex C (normative) General procedure for type tests ......................................................... 55

C.1 Tests on the outer layer material ........................................................................... 55

C.2 Tests on material .................................................................................................. 55

C.3 Tests on the conductive garment .......................................................................... 55

C.4 Tests on the conductive component parts ............................................................. 56

C.5 Tests on the complete conductive clothing ............................................................ 56

Annex D (normative) Classification of defects and tests to be allocated ............................... 57

Annex E (informative) Rationale for the classification of defects .......................................... 60

Annex F (informative) In-service use and care ..................................................................... 63

F.1 General ................................................................................................................. 63

F.2 Care, storage and repair ....................................................................................... 63

F.2.1 Care .............................................................................................................. 63

F.2.2 Storage.......................................................................................................... 63

F.2.3 Cleaning and washing.................................................................................... 63

F.2.4 Patching and repair of conductive fabric ........................................................ 63

F.3 Inspection before use ............................................................................................ 64

F.3.1 General ......................................................................................................... 64

F.3.2 Conductive clothing ....................................................................................... 64

F.3.3 Conductive boots and leg straps .................................................................... 64

F.3.4 Conductive socks and gloves ......................................................................... 64

---------------------- Page: 5 ----------------------
– 4 – IEC 60895:2020 © IEC 2020

F.4 Non-destructive periodic testing ............................................................................ 64

F.4.1 General ......................................................................................................... 64

F.4.2 Time between periodic tests .......................................................................... 64

F.4.3 Resistance test .............................................................................................. 64

F.4.4 Record keeping ............................................................................................. 65

Annex G (informative) Face protection ................................................................................. 66

G.1 General ................................................................................................................. 66

G.2 Face screen design ............................................................................................... 66

Annex H (informative) Example of general arrangement of complete conductive

clothing ................................................................................................................................. 68

Bibliography .......................................................................................................................... 69

Figure 1 – Flame-retardancy test – Test chamber ................................................................. 18

Figure 2 – Flame-retardancy test – Test piece holder and support ........................................ 20

Figure 3 – Electrical resistance test – Test set-up ................................................................. 24

Figure 4 – Orientation of test pieces for electrical resistance and current-carrying

capability tests ...................................................................................................................... 25

Figure 5 – Electrical resistance test – Electrical circuit .......................................................... 25

Figure 6 – Shielding efficiency .............................................................................................. 30

Figure 7 – Screening efficiency of conductive clothing – First method: Test set-up ............... 39

Figure 8 – Screening efficiency of conductive clothing – First method – Details of the

measurements ...................................................................................................................... 40

Figure 9 – Position of ammeters for screening efficiency test ................................................ 41

Figure 10 – Second method to check the screening efficiency............................................... 42

Figure 11 – Electrical resistance test – Conductive gloves .................................................... 44

Figure 12 – Electrical resistance test – Conductive overshoe socks and socks ..................... 45

Figure 13 – Electrical resistance test – Conductive footwear ................................................. 47

Figure 14 – Electrical resistance test – Conductive head covers, scarves and face

screens ................................................................................................................................. 50

Figure B.1 – Symbol for live working with its dimensions (IEC 60417-5216:2002-10) ............ 54

Figure G.1 – Electric field strength as a function of mesh opening radius .............................. 67

Figure H.1 – Example of general arrangement of complete conductive clothing .................... 68

Table 1 – Arithmetic mean and maximum resistance of a unit square of the conductive

material according to the maximum voltage class of the conductive clothing ......................... 26

Table 2 – Minimum shielding efficiency of conductive material according to the

maximum voltage class of the conductive clothing ................................................................ 31

Table 3 – Maximum resistance for garment according to the maximum voltage class of

the conductive clothing ......................................................................................................... 35

Table 4 – Maximum bonding resistance of the conductive clothing according to its

maximum voltage class ......................................................................................................... 36

Table 5 – Maximum phase-to-earth test voltage according to the maximum voltage

class of the conductive clothing ............................................................................................ 37

Table 6 – Minimum screening efficiency of conductive clothing according to the

maximum voltage class ......................................................................................................... 42

Table 7 – Parameters of the alternative test and minimum screening efficiency of

conductive clothing according to the maximum voltage class ................................................ 43

---------------------- Page: 6 ----------------------
IEC 60895:2020 © IEC 2020 – 5 –

Table 8 – Maximum resistance of glove according to the maximum voltage class of the

conductive clothing ............................................................................................................... 44

Table 9 – Maximum resistance of overshoe socks and socks according to the

maximum voltage class of the conductive clothing ................................................................ 45

Table 10 – Maximum resistance of conductive hood, scarf, helmet and face screen

according to the maximum voltage class of the conductive clothing ...................................... 51

Table A.1 – Designation of maximum use voltage ................................................................. 53

Table C.1 – List of type tests to be carried out on the outer layer material ............................ 55

Table C.2 – List of type tests to be carried out on the material .............................................. 55

Table C.3 – List of type tests to be carried out on the conductive garment ............................ 56

Table C.4 – List of type tests to be carried out on the component parts ................................ 56

Table C.5 – List of type tests to be carried out on the complete conductive clothing.............. 56

Table D.1 – Classification of defects on the outer layer material and associated

requirements and tests ......................................................................................................... 57

Table D.2 – Classification of defects on the conductive material and associated

requirements and tests ......................................................................................................... 57

Table D.3 – Classification of defects on the conductive garment and associated

requirements and tests ......................................................................................................... 58

Table D.4 – Classification of defects on the conductive component parts and

associated requirements and tests ........................................................................................ 58

Table D.5 – Classification of defects on the complete conductive clothing and

associated requirements and tests ........................................................................................ 59

Table E.1 – Justification for the type of defect....................................................................... 60

---------------------- Page: 7 ----------------------
– 6 – IEC 60895:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIVE WORKING – CONDUCTIVE CLOTHING
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

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International Standard IEC 60895 has been prepared by IEC technical committee 78: Live

working.

This third edition cancels and replaces the second edition, published in 2002. This edition

constitutes a technical revision.

This 3edition includes the following significant technical changes with respect to the previous

edition:
a) increase of the use up to 1 000 kV AC and ±800 kV DC;

b) introduction of two classes of conductive clothing with different electrical requirements;

c) revision of the electrical requirements of conductive clothing;

d) definition of specific resistance values for each component part of the conductive clothing;

e) introduction of conductive helmet and conductive scarf as component parts of conductive

clothing;
f) introduction of mechanical requirements and new tests for fabrics;
g) update of the cleaning test procedures;
---------------------- Page: 8 ----------------------
IEC 60895:2020 © IEC 2020 – 7 –

h) revision of the efficiency test of the conductive clothing to improve the feasibility and

repeatability;

i) preparation of the elements of classification of defects, and general application of

IEC 61318:2007;

j) the normative Annex B for the classification of tests has been replaced by normative

Annex C for the general type tests procedure, the normative Annex D for the classification

of defects and the informative Annex E providing the justification for the classification of

defects;

k) the normative Annex C on sampling procedure has been deleted (not applicable according

to IEC 61318:2007);
l) modification of the recommended frequency of the periodic tests.
The text of this standard is based on the following documents:
FDIS Report on voting
78/1309/FDIS 78/1312/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indica
...

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