IEC 61111:2009

IEC 61111 ®
Edition 2.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Electrical insulating matting

Travaux sous tension – Tapis isolants électriques

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IEC 61111 ®
Edition 2.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Electrical insulating matting

Travaux sous tension – Tapis isolants électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 13.260; 29.260.99 ISBN 978-2-88910-413-0
– 2 – 61111 © IEC:2009
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms and definitions .8
4 Requirements .9
4.1 General .9
4.2 Classification.9
4.3 Physical requirements .9
4.3.1 Composition .9
4.3.2 Shape.9
4.3.3 Dimensions and tolerances.9
4.3.4 Workmanship and finish .10
4.4 Mechanical, climatic and environmental requirements .10
4.5 Dielectric requirements.11
4.6 Marking .11
4.7 Packaging .11
4.8 Instructions for use.11
5 Tests .12
5.1 General .12
5.2 Visual inspection and measurements.12
5.2.1 General .12
5.2.2 Classification.12
5.2.3 Composition .12
5.2.4 Dimensions, workmanship and finish .12
5.2.5 Thickness .13
5.3 Marking .13
5.3.1 Visual inspection and measurement .13
5.3.2 Durability of marking.13
5.4 Packaging and instructions for use .13
5.5 Mechanical tests .14
5.5.1 General .14
5.5.2 Mechanical puncture resistance.14
5.5.3 Test for slip resistance .14
5.6 Dielectric tests .15
5.6.1 General .15
5.6.2 Electrodes .16
5.6.3 Test equipment.19
5.6.4 Electrical test procedure .19
5.7 Ageing tests .20
5.8 Thermal tests .21
5.8.1 Flame retardance test.21
5.8.2 Low temperature folding test (except for matting of category C).21
5.8.3 Extremely low temperature folding test for matting of category C only .22
5.9 Acid resistance.23
5.10 Oil resistance .23

61111 © IEC:2009 – 3 –
6 Conformity assessment of electrical insulating matting having completed the
production phase.23
7 Modifications .23
Annex A (informative) Guidelines for the selection of the class of electrical insulating
matting in relation to nominal voltage of a system .24
Annex B (informative) In-service care and testing .25
Annex C (normative) Suitable for live working; double triangle (IEC 60417–5216
(2002-10)).27
Annex D (normative) General type test procedure.28
Annex E (normative) Oil for tests for oil resistance.30
Annex F (normative) Classification of defects and tests to be allocated .31
Bibliography.32

Figure 1 – Test plates and needle for resistance to mechanical puncture.15
Figure 2 – Test set-up for voltage proof test of electrical insulating matting with
standard type of electrodes.16
Figure 3 – Test set-up for voltage proof test of electrical insulating matting with
alternative type of electrodes .18
Figure 4 – Test set-up for voltage withstand test.19
Figure 5 – Test set-up for low and extremely low temperature folding tests.22

Table 1 – Common lengths and widths for electrical insulating matting .10
Table 2 – Maximum thickness for electrical insulating matting.10
Table 3 – Maximum electrode clearance for proof tests .17
Table 4 – Test voltages.20
Table A.1 – Designation maximum use voltage .24
Table D.1 – List and chronological order of type tests.28
Table E.1 – Characteristics of oil no. 1.30
Table F.1 – Classification of defects and associated requirements and tests .31

– 4 – 61111 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIVE WORKING –
ELECTRICAL INSULATING MATTING
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
...