SIST-TS CLC/TS 61112:2007
(Main)Blankets of insulating material for electrical purposes
Blankets of insulating material for electrical purposes
Applies to insulating blankets for the protection of workers from accidental contact with live or earthed electrical conductors, apparatus or ciruits and avoidance of short circuits on a.c. and d.c. installations.
Abdecktücher aus isolierendem Material zum Arbeiten unter Spannung
Nappes en matériau isolant pour travaux électriques
Pregrinjala iz izolacijskega materiala za uporabo v elektrotehniki (IEC 61112:1992 + A1:2002 + popravek maj 2000 + A1:2002)
Ta standard se nanaša na pregrinjala iz izolacijskega materiala za zaščito delavcev od slučajnih stikov z električnimi linijskimi ali zemeljskimi vodniki, aparati ali naprave za kratko stikanje na a. c. in d. c. inštalacijah.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST-TS CLC/TS 61112:2007
01-marec-2007
Pregrinjala iz izolacijskega materiala za uporabo v elektrotehniki (IEC 61112:1992 +
A1:2002 + popravek maj 2000 + A1:2002)
Blankets of insulating material for electrical purposes (IEC 61112:1992 + A1:2002 +
corrigendum May 2000 + A1:2002)
Abdecktcher aus isolierendem Material zum Arbeiten unter Spannung
Nappes en matriau isolant pour travaux lectriques
Ta slovenski standard je istoveten z: CLC/TS 61112:2006
ICS:
13.260 9DUVWYRSUHGHOHNWULþQLP Protection against electric
XGDURP'HORSRGQDSHWRVWMR shock. Live working
SIST-TS CLC/TS 61112:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST-TS CLC/TS 61112:2007
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SIST-TS CLC/TS 61112:2007
TECHNICAL SPECIFICATION
CLC/TS 61112
SPÉCIFICATION TECHNIQUE
December 2006
TECHNISCHE SPEZIFIKATION
ICS 13.260; 29.240.20; 29.260.99
English version
Blankets of insulating material for electrical purposes
(IEC 61112:1992 + corrigendum May 2000 + A1:2002)
Nappes en matériau isolant Abdecktücher aus isolierendem Material
pour travaux électriques zum Arbeiten unter Spannung
(CEI 61112:1992 (IEC 61112:1992
+ corrigendum mai 2000 + A1:2002) + Corrigendum Mai 2000 + A1:2002)
This Technical Specification was approved by CENELEC on 2006-09-02.
CENELEC members are required to announce the existence of this TS in the same way as for an EN and to
make the TS available promptly at national level in an appropriate form. It is permissible to keep conflicting
national standards in force.
CENELEC members are the national electrotechnical committees of Austria, Belgium, 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: rue de Stassart 35, B - 1050 Brussels
© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TS 61112:2006 E
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SIST-TS CLC/TS 61112:2007
CLC/TS 61112:2006 - 2 -
Foreword
The text of the International Standard IEC 61112:1992 + corrigendum May 2000 + A1:2002, prepared by
IEC TC 78, Live working, was submitted to the formal vote and was approved by CENELEC as
CLC/TS 61112 on 2006-09-02.
The following date was fixed:
– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2007-03-01
Annex ZA has been added by CENELEC.
___________
Endorsement notice
The text of the International Standard IEC 61112:1992 + corrigendum May 2000 + A1:2002 was approved
by CENELEC as a Technical Specification without any modification.
___________
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SIST-TS CLC/TS 61112:2007
- 3 - CLC/TS 61112:2006
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
IEC 60050-121 1978 International Electrotechnical vocabulary - -
(IEV)
Chapter 121: Electromagnetism
IEC 60050-151 1978 International Electrotechnical Vocabulary - -
(IEV)
Part 151: Electrical and magnetic devices
IEC 60050-601 1985 International Electrotechnical Vocabulary - -
(IEV)
Chapter 601: Generation, transmission and
distribution of electricity - General
IEC 60060-1 1989 High-voltage test techniques
+ corr. March 1990 Part 1: General definitions and test HD 588.1 S1 1991
requirements
IEC 60060-3 1976 High-voltage test techniques - -
Part 3: Measuring devices
IEC 60160 1963 Standard atmospheric conditions for test - -
purposes
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
IEC 61318 1994 Live working - Guidelines for quality - -
assurance plans
ISO 472 1988 Plastics - Vocabulary - -
1)
ISO 2592 1973 Petroleum products - Determination of EN 22592 1993
flash and fire points - Cleveland open cup
method
1)
EN 22592 is superseded by EN ISO 2592:2001, which is based on ISO 2592:2000.
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SIST-TS CLC/TS 61112:2007
CLC/TS 61112:2006 - 4 -
Publication Year Title EN/HD Year
ISO 2859-1 1999 Sampling procedures for inspection by - -
attributes
Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot
inspection
2)
ISO 2977 1989 Petroleum products and hydrocarbon - -
solvents - Determination of aniline point and
mixed aniline point
3)
ISO 3104 1976 Petroleum Products - Transparent and - -
opaque liquids - Determination of kinematic
viscosity and calculation of dynamic viscosity
4)
ISO/IEC 9000 1987 Quality management and quality assurance EN 29000 1987
standards - Guidelines for selection and use
5)
ISO/IEC 9001 1987 Quality systems - Model for quality EN 29001 1987
assurance in design/development,
production, installation and servicing
6)
ISO/IEC 9002 1987 Quality systems - Model for quality EN 29002 1987
assurance in production and installation
7)
ISO/IEC 9003 1987 Quality systems - Model for quality EN 29003 1987
assurance in final inspection and test
2)
ISO 2977 is superseded by ISO 2977:1997.
3)
ISO 3104 is superseded by ISO 3104:1994, which is harmonized as EN ISO 3104:1996.
4)
EN 29000 is superseded by EN ISO 9000:2005, which is based on ISO 9000:2005.
5)
EN 29001 is superseded by EN ISO 9001:2000, which is based on ISO 2001:2000.
6)
EN 29002 is superseded by EN ISO 9002:1994, which is based on ISO 9002:1994.
7)
EN 29003 is superseded by EN ISO 9003:1994, which is based on ISO 9003:1994.
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SIST-TS CLC/TS 61112:2007
NORME CEI
INTERNATIONALE IEC
61112
INTERNATIONAL
Edition 1.1
STANDARD
2002-06
Edition 1:1992 consolidée par l'amendement 1:2002
Edition 1:1992 consolidated with amendment 1:2002
Nappes en matériau isolant
pour travaux électriques
Blankets of insulating material
for electrical purposes
IEC 2002 Droits de reproduction réservés Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
CH
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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SIST-TS CLC/TS 61112:2007
61112 © IEC:1992+A1:2002 – 3 –
CONTENTS
FOREWORD.7
1 Scope .9
1.1 Classes .9
1.2 Categories.9
2 Normative references.9
3 Definitions.11
4 Composition.13
5 Classification .13
6 Physical requirements.15
6.1 Shape .15
6.2 Dimensions .15
6.3 Thickness.15
6.4 Workmanship and finish .17
6.5 Marking .17
6.6 Packaging .19
7 Tests on blankets.19
7.1 General .19
7.2 Visual inspection and measurements.21
7.3 Mechanical tests .23
7.4 Dielectric tests .27
7.5 Ageing tests .35
7.6 Thermal tests .37
8 Tests on blankets with special properties .39
8.1 General .39
8.2 Category A: Acid resistance .39
8.3 Category H: Oil resistance.39
8.4 Category Z: Ozone resistance .41
8.5 Category M: Mechanical (higher level resistance).41
8.6 Category S: Oil and ozone resistance.43
8.7 Category C: Extreme low temperature .43
9 Quality assurance plan and acceptance test .43
Annex A (normative) Marking symbol double triangle .45
Annex B (normative) List and classification of tests.47
Annex C (normative) Oil for tests on category H blankets
Oil resistance.49
Annex D (normative) Sampling plans and procedures .51
Annex E (informative) Guidelines for the selection of the class of blankets in relation
to nominal voltage of a system.55
Annex F (informative) Acceptance tests .57
Annex G (informative) In-service recommendations .59
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Figure A.1 – Symbols and symbol location.45
Figure 1 – Plain design .61
Figure 2 – Slotted design .61
Figure 3 – Dumb-bell test piece (see 7.3.2).63
Figure 4 – Mechanical puncture (see 7.3.3) .65
Figure 5 – Tear resistance test .67
Figure 6 – Test electrode for blankets of classes 3 and 4.69
Figure 7 – Electrode for plastomers .71
Figure 8 – Polyethylene plates for extreme low temperatures (see 7.2.2 or 8.7).71
Figure 9 – Test set-up – Method B (see 8.4.2) .73
Table 1 – Designation of special properties.15
Table 2 – Recommended dimensions and tolerances.15
Table 3 – Maximum thickness .15
Table 4 – Electrode clearance for proof tests .27
Table 5 – Test voltage .35
Table B.1 – General test procedure .47
Table C.1 – Characteristics of oil .49
Table D.1 – Classification of defects .51
Table D.2 – Sampling plan for minor defects.53
Table D.3 – Sampling plan for major defects.53
Table E.1 – Designation maximum use voltage .55
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
BLANKETS OF INSULATING MATERIAL FOR ELECTRICAL PURPOSES
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61112 has been prepared by IEC technical committee 78: Tools
for live working.
This consolidated version of IEC 61112 consists of the first edition (1992) [documents
78(CO)64/FDIS and 78(CO)68/RVD], its corrigendum May 2000 and its amendment 1 (2002)
[documents 78/437/FDIS and 78/458/RVD].
The technical content is therefore identical to the base edition and its amendment and has
been prepared for user convenience.
It bears the edition number 1.1.
A vertical line in the margin shows where the base publication has been modified by
corrigendum and amendment 1.
Annexes A, B, C and D form an integral part of this International Standard.
Annexes E, F and G are for information only.
The committee has decided that the contents of the base publication, its corrigendum and its
amendment will remain unchanged until 2004. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
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SIST-TS CLC/TS 61112:2007
61112 © IEC:1992+A1:2002 – 9 –
BLANKETS OF INSULATING MATERIAL FOR ELECTRICAL PURPOSES
1 Scope
This International Standard is applicable to 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 a.c. and d.c. installations.
1.1 Classes
Five classes of blankets, differing in electrical characteristics, are provided and designated as
class 0, class 1, class 2, class 3 and class 4.
1.2 Categories
Six categories of blankets different in properties related to acid, oil, ozone, mechanical
puncture and a combination of oil and ozone are provided and designated categories A, H, Z,
M, S respectively, and also extreme low temperature designated category C.
2 Normative references
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.
IEC 60050(121):1978, International Electrotechnical Vocabulary (IEV) Chapter 121: Electro-
magnetism
IEC 60050(151):1978, International Electrotechnical Vocabulary (IEV) Chapter 151:
Electrical and magnetic devices
IEC 60050(601):1985, International Electrotechnical Vocabulary (IEV) Chapter 601: Gener-
ation, transmission and distribution of electricity – General
IEC 60060-1:1989, High-voltage test techniques – Part 1: General definitions and test
requirements
IEC 60060-3:1976, High-voltage test techniques – Part 3: Measuring devices
IEC 60160:1963, Standard atmospheric conditions for test purposes
IEC 60212:1971, Standard conditions for use prior to and during the testing of solid elec-
trical insulating materials
IEC 60417 (all parts), Graphical symbols for use on equipment
IEC 61318:1994, Live working – Guidelines for quality assurance plans
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61112 © IEC:1992+A1:2002 – 11 –
ISO 472:1988, Plastics – Vocabulary. Bilingual edition
ISO 2592:1973, Petroleum products – Determination of flash and fire points – Cleveland
open cup method
ISO 2859-1:1999, Sampling procedures for inspection by attributes – Part 1: Sampling
schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 2977:1989, Petroleum products and hydrocarbon solvents – Determination of aniline
point and mixed aniline point
ISO 3104:1976, Petroleum products – Transparent and opaque liquids – Determination of
kinematic viscosity and calculation of dynamic viscosity
ISO 9000:1987, Quality management and quality assurance standards – Guidelines for
selection and use
ISO 9001:1987, Quality systems – Model for quality assurance in design/development,
production, installation and servicing
ISO 9002:1987, Quality systems – Model for quality assurance in production and installation
ISO 9003:1987, Quality systems – Model for quality assurance in final inspection and test
3 Definitions
For the purpose of this International Standard, the following definitions apply.
3.1
elastomer
a generic term that includes rubbers, latex and elastomeric compounds that may be natural,
or synthetic, or a mixture, or a combination of both
3.2
plastic
a material which contains as an essential ingredient a high polymer and which at some stage
of its processing into finished products can be shaped by flow
[ISO 472]
3.3
electrode clearance
the shortest path from the energized electrode to the ground electrode
3.4
electrical puncture
a disruptive breakdown through a solid insulant
[IEV 121-03-13]
3.5
flashover
an arc by-passing an insulating body [IEV 121-03-14] and occurring between electrodes and
over or around, but not through, the equipment being tested
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61112 © IEC:1992+A1:2002 – 13 –
3.6
nominal voltage
a suitable approximate value of voltage used to designate or identify a system
[IEV 601-01-21]
3.7
acceptance test
a contractual test to prove to the customer that the device meets certain conditions of its
specification
[IEV 151-04-20]
3.8
proof test voltage
the specified voltage that is applied to a device for the time defined under specified conditions
to assure that the electrical strength of the insulation is above a specified value
3.9
type test
a test of one or more devices made to a certain design to show that the design meets certain
specifications
[IEV 151-04-15]
3.10
routine test
a test to which each individual device is subjected during or after manufacture to ascertain
whether it complies with certain criteria
[IEV 151-04-16]
3.11
sampling test
a test performed on a number of devices taken at random from a batch
[IEV 151-04-17]
3.12
withstand test voltage
the voltage that the device must withstand without flashover, disruptive discharge, puncture or
other electric failure when voltage is applied under specified conditions
4 Composition
The blankets shall be manufactured of elastomer or plastics and produced by seamless
process. Where eyelets are provided in blankets they shall be non-conductive and shall be
nominally 8 mm in diameter.
5 Classification
The blankets covered under this standard shall be designated as follows:
– by class as class 0, class 1, class 2, class 3 and class 4;
– by category by the addition of a suffix as shown in table 1.
Guidance as to use of blankets in relation to nominal voltage of a system is given in annex E.
Guidance as to temperature range at which blankets can be used is given in annex G.
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61112 © IEC:1992+A1:2002 – 15 –
Table 1 – Designation of special properties
Category Characteristics
A Resistant to acid
H Resistant to oil
Z Resistant to ozone
M Resistant to mechanical puncture (higher level reinforced)
S Resistant to oil and ozone
C Resistant to extreme low temperatures
NOTE 1 Category S combines the characteristics of categories H and Z.
NOTE 2 Any combination of categories may be used.
6 Physical requirements
6.1 Shape
Blankets may be either of specific shapes or in rolls to be cut for individual requirements.
Those of specific shapes may be plain (see figure 1) or of the slotted design (see figure 2).
6.2 Dimensions
Dimensions and tolerances are indicated in table 2.
Table 2 – Recommended dimensions and tolerances
Dimensions**
Plain Slotted Rolls
Length Width Length Width Width
mm mm mm mm mm
910 305 – – 60*, 90*, 1 000,
560 560 560 560 1 300, 2 000
910 690 910 910
910 910 – –
2 280 910 1 160 1160
* To be produced in class 0 only.
** Permissible variations in length and width shall be ±15 mm except for the 1 160 mm × 1 160 mm slotted size
for which the permissible variation shall be ±25 mm. Permissible variations for rolls of 60 mm and 90 mm in
width shall be ±2 mm.
6.3 Thickness
6.3.1 The maximum thickness of a blanket shall be as given in table 3 in order to obtain
appropriate flexibility.
Table 3 – Maximum thickness
Maximum Maximum
Class Elastomere Plastic
mm mm
0 2,2 1,0
1 3,6 1,5
2 3,8 2,0
1)
3 4,0
1)
4 4,3
1)
Under consideration.
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61112 © IEC:1992+A1:2002 – 17 –
6.3.2 The minimum thickness shall be determined only by the ability to pass the tests
defined in clauses 7 and 8.
6.3.3 Blankets of categories A, H, M, S and Z may require additional thickness which shall
not exceed 0,6 mm.
6.4 Workmanship and finish
Blankets shall be free on both surfaces from harmful physical irregularities that can be
detected by thorough test and inspection.
Harmful physical irregularities shall be defined as any feature that disrupts the uniform,
smooth surface contour, such as pinholes, cracks, blisters, cuts, conductive embedded
foreign matter, creases, pinch marks, voids (entrapped air), prominent ripples and prominent
mould marks.
Non-harmful physical irregularities shall be defined as surface irregularities present on either
surface of the blanket due to imperfections on forms or moulds or other imperfections inherent
to the manufacturing process. These irregularities appear as mould marks that look like cuts
even though they are actually a raised ridge of elastomer, indentations, or protuberances that
are acceptable provided that:
a) the depression is not larger than 1,6 mm in diameter, has rounded edges and no visible
break in the surface, and cannot be seen on the opposite side when stretching over the
thumb;
b) there are not more than five depressions as described in a) anywhere on the blanket or on
the roll section under test and any two are separated by at least 15 mm;
c) the indentations, protuberances or mould marks tend to blend into a smooth surface upon
stretching of the material;
d) the small projections or protuberances represent only a small amount of excess material
that cannot be readily removed with the finger and these projections do not appreciably
affect the stretching of the material.
6.5 Marking
6.5.1 Each blanket which is claimed to comply with the requirements of this standard shall
be marked with the following:
a) symbol IEC-60417-5216 – Suitable for live working; double triangle (see annex A);
b) number of the relevant IEC standard immediately adjacent to the symbol;
c) name, trademark, or identification of the manufacturer;
d) category, if applicable;
e) size (length and width);
f) class;
g) month and year of manufacture.
In addition each blanket shall have a group of rectangles or other suitable means to identify
when the blanket was put into service and the dates of periodic inspection and testing.
In the case of rolls and sheets, they shall be marked on one border at least every metre with
the category and class.
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61112 © IEC:1992+A1:2002 – 19 –
6.5.2 The marking shall be clearly visible, durable and shall not impair the quality of the
blanket.
The durability of the marking is checked by rubbing the marking for 15 s with a piece of lint-
free cloth soaked in soapy water and then rubbing it for further 15 s with a piece of lint-free
cloth soaked in ethylated alcohol. At the end of the test, the marking must remain legible.
6.5.3 Any additional marking shall be subject to agreement between the manufacturer and
the customer.
6.5.4 When a colour code is used, the colour of the symbol (double triangle) shall corres-
pond to the following code:
Class 0 – red
Class 1 – white
Class 2 – yellow
Class 3 – green
Class 4 – orange
6.6 Packaging
Blankets shall be packaged in an individual container or package of sufficient strength to
properly protect the blankets from damage. The outside of the container or package shall be
marked with the name of the manufacturer o
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