EN 61112:2009

Live working - Electrical insulating blankets

IEC 61112:2009 is applicable to electrical insulating blankets for the protection of workers from accidental contact with live or earthed electrical conductors, apparatus or circuits and avoidance of short circuits on electrical installations. This second edition cancels and replaces the first edition, published in 1992, and its Amendment 1 (2002). This edition constitutes a technical revision. It includes the following significant technical changes from the previous edition: - general review of the requirements and test provisions; - limitation of the scope in terms of the minimum width of electrical insulating blankets in rolls; - preparation of the elements of evaluation of defects, and general application of IEC 61318 Ed.3; - revision of existing annexes; - deletion of Annexes D and F, not applicable according to IEC 61318 Ed.3; - introduction of a new normative Annex F on classification of defects.

Arbeiten unter Spannung - Elektrisch isolierende Abdecktücher

Travaux sous tension - Nappes isolantes électriques

La CEI 61112:2009 est applicable aux nappes isolantes électriques pour la protection des travailleurs contre un contact accidentel avec des conducteurs électriques sous tension ou mis à la terre, des appareils ou des circuits, et contre les courts-circuits dans des installations électriques. Cette édition annule et remplace la première édition publiée en 1992 ainsi que son Amendement 1 (2002), et constitue une révision technique. Elle inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - la révision générale des exigences et des dispositions d'essai; - la limitation de l'étendue du domaine d'application en ce qui a trait à la largeur minimale des nappes isolantes électriques en rouleaux; - la préparation des éléments d'évaluation des défauts et de l'application générale de la CEI 61318 Ed.3; - la révision des annexes existantes; - la disparition des Annexe D et F qui ne sont plus applicables, en accord avec la CEI 61318 Ed.3; - l'introduction d'une nouvelle Annexe F normative traitant de la classification des défauts.

Delo pod napetostjo - Pregrinjala za električno izolacijo (IEC 61112:2009)

General Information

• Status: Published
• Publication Date: 25-Jun-2009
• Withdrawal Date: 31-May-2012
• ICS: 13.260 - Protection against electric shock. Live working
• ICS: 29.240.20 - Power transmission and distribution lines
• ICS: 29.260.99 - Other electrical equipment for working in special conditions
• Technical Committee: CLC/TC 78 - Equipment and tools for live working
• Drafting Committee: IEC/TC 78 - IEC_TC_78
• Parallel Committee: IEC/TC 78 - IEC_TC_78
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 26-Jun-2009
• Completion Date: 26-Jun-2009
• Ref Project: SIST EN 61112:2009 - Live working - Electrical insulating blankets

Relations

• Replaces: CLC/TS 61112:2006 - Blankets of insulating material for electrical purposes
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2009
1DGRPHãþD
SIST-TS CLC/TS 61112:2007
'HORSRGQDSHWRVWMR3UHJULQMDOD]DHOHNWULþQRL]RODFLMR,(&
Live working - Electrical insulating blankets
Arbeiten unter Spannung – Elektrisch isolierende Abdecktücher
Travaux sous tension - Nappes isolantes électriques
Ta slovenski standard je istoveten z: EN 61112:2009
ICS:
13.260 9DUVWYRSUHGHOHNWULþQLP Protection against electric
XGDURP'HORSRGQDSHWRVWMR shock. Live working
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61112
NORME EUROPÉENNE
June 2009
EUROPÄISCHE NORM
ICS 13.260; 29.240.20; 29.260.99 Supersedes CLC/TS 61112:2006

English version
Live working -
Electrical insulating blankets
(IEC 61112:2009)
Travaux sous tension -  Arbeiten unter Spannung -
Nappes isolantes électriques Elektrisch isolierende Abdecktücher
(CEI 61112:2009) (IEC 61112:2009)

This European Standard was approved by CENELEC on 2009-06-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61112:2009 E
Foreword
The text of document 78/785/FDIS, future edition 2 of IEC 61112, prepared by IEC TC 78, Live working,
was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61112 on
2009-06-01.
This European Standard supersedes CLC/TS 61112:2006.
– general review of the requirements and test provisions;
– limitation of the scope in terms of the minimum width of electrical insulating blankets in rolls;
– introduction of a definition of electrical insulating blankets including sheeting in various shapes and in
rolls;
– introduction of Class 00;
– withdrawal of category S and introduction of category R;
– clarification of the way electrical insulating blankets in rolls are covered by the test procedures;
– specification of standard and alternative types of electrodes for the proof test;
– modification of the test procedures for low and extremely low temperature by replacing the dielectric
proof test by a withstand test in the sanction;
– modification of the test procedures for acid and oil resistance by specifying the use of test pieces and
by replacing the dielectric proof test by a withstand test in the sanction;
– specification of liquid 102 for the oil resistance test and harmonisation of the mechanical test sanction
with the acid resistance test;
– preparation of the elements of evaluation of defects, and general application of EN 61318:2008;
– revision of existing annexes;
– deletion of Annexes D and F, not applicable according to EN 61318:2008;
– introduction of a new normative Annex F on classification of defects.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-06-01
Annex ZA has been added by CENELEC.
__________
- 3 - EN 61112:2009
Endorsement notice
The text of the International Standard IEC 61112:2009 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60743 NOTE  Harmonized as EN 60743:2001 + A1:2008 (not modified).
+ A1
__________
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1) 2)
IEC 60060-1 - High-voltage test techniques - HD 588.1 S1 1991
Part 1: General definitions and test
requirements
1) 2)
IEC 60060-2 - High-voltage test techniques - EN 60060-2 1994
Part 2: Measuring systems
1) 2)
IEC 60068-1 - Environmental testing - EN 60068-1 1994
Part 1: General and guidance
IEC 60212 1971 Standard conditions for use prior to and HD 437 S1 1984
during the testing of solid electrical insulating
materials
IEC 60417 Data- Graphical symbols for use on equipment - -
base
1) 2)
IEC 61318 - Live working - Conformity assessment EN 61318 2008
applicable to tools, devices and equipment

1) 2)
IEC 61477 - Live working - Minimum requirements for the EN 61477 2009
utilization of tools, devices and equipment

1) 2)
ISO 2592 - Determination of flash and fire points - EN ISO 2592 2001
Cleveland open cup method
1)
ISO 2977 - Petroleum products and hydrocarbon - -
solvents - Determination of aniline point and
mixed aniline point
1) 2)
ISO 3104 - Petroleum products - Transparent and EN ISO 3104 1996
opaque liquids - Determination of kinematic
viscosity and calculation of dynamic viscosity

ASTM D 3767 2003 Standard Practice for Rubber - Measurement - -
of Dimensions
1)
Undated reference.
2)
Valid edition at date of issue.

IEC 61112 ®
Edition 2.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Electrical insulating blankets

Travaux sous tension – Nappes isolantes électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 13.260; 29.240.20; 29.260.99 ISBN 2-8318-1036-5
– 2 – 61112 © 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 and design.9
4.3.3 Dimensions and tolerances.11
4.3.4 Workmanship and finish .11
4.4 Mechanical, climatic and environmental requirements .12
4.5 Dielectric requirements.12
4.6 Marking .12
4.7 Packaging .13
4.8 Instructions for use.13
5 Tests .13
5.1 General .13
5.2 Visual inspection and measurements.14
5.2.1 General .14
5.2.2 Classification.14
5.2.3 Composition .14
5.2.4 Dimensions, workmanship and finish .14
5.2.5 Thickness .14
5.3 Marking .15
5.3.1 Visual inspection and measurement .15
5.3.2 Durability of marking.15
5.4 Packaging and instructions for use .15
5.5 Mechanical tests .15
5.5.1 General .15
5.5.2 Tensile strength and elongation at break .15
5.5.3 Mechanical puncture resistance.16
5.5.4 Tension set for elastomer material.18
5.5.5 Tear resistance test for plastic material .18
5.6 Dielectric tests .19
5.6.1 General .19
5.6.2 Electrodes .20
5.6.3 Test equipment.22
5.6.4 Electrical test procedure .23
5.7 Ageing tests .24
5.8 Thermal tests .25
5.8.1 Flame retardance test.25
5.8.2 Low temperature folding test (except for category C blankets) .26
6 Tests on electrical insulating blankets with special properties.27

61112 © IEC:2009 – 3 –
6.1 General .27
6.2 Category A: Acid resistance .27
6.3 Category H: Oil resistance.27
6.4 Category Z: Ozone resistance .27
6.4.1 General .27
6.4.2 Test methods.28
6.5 Category M: Mechanical puncture resistance.29
6.6 Category C: Extremely low temperature folding test .29
7 Conformity assessment of electrical insulating blankets having completed the
production phase.29
8 Modifications .30
Annex A (informative) Guidelines for the selection of the class of electrical insulating
blankets in relation to nominal voltage of a system .
...