IEC 60855-1:2009
(Main)Live working - Insulating foam-filled tubes and solid rods - Part 1: Tubes and rods of a circular cross-section
Live working - Insulating foam-filled tubes and solid rods - Part 1: Tubes and rods of a circular cross-section
IEC 60855-1:2009 is applicable to insulating foam-filled tubes and solid rods, of a circular cross-section, made of synthetic materials and intended to be used for the manufacture and construction of tools and equipment for carrying out live work on electrical systems operating at voltages above 1 kV. Tubes and rods of cross-section other than circular are not covered by this part of IEC 60855. This first edition of IEC 60855-1 cancels and replaces the first edition of IEC 60855 published in 1985; and constitutes a technical revision. Technical committee 78 is considering the preparation of IEC 60855-2, which would cover tubes and rods of cross-section other than circular.
Travaux sous tension - Tubes isolants remplis de mousse et tiges isolantes - Partie 1: Tubes et tiges de section circulaire
La CEI 60855-1:2009 est applicable aux tubes isolants remplis de mousse et aux tiges isolantes pleines, de section circulaire, fabriqués en matériaux synthétiques et destinés à être utilisés dans la fabrication et la construction des outils et équipements pour réaliser des travaux sous tension sur des réseaux électriques de tension nominale supérieure à 1 kV. Les tubes et tiges de section autre que circulaire ne sont pas couverts par la présente partie de la CEI 60855. Cette première édition de la CEI 60855-1 annule et remplace la première édition de la CEI 60855, publiée en 1985, dont elle constitue une révision technique. Le comité technique 78 étudie la préparation de la CEI 60855-2 qui serait applicable aux tubes et tiges de section autre que circulaire.
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Standards Content (Sample)
IEC 60855-1
®
Edition 1.0 2009-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Insulating foam-filled tubes and solid rods –
Part 1: Tubes and rods of a circular cross-section
Travaux sous tension – Tubes isolants remplis de mousse et tiges isolantes –
Partie 1: Tubes et tiges de section circulaire
IEC 60855-1:2009
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IEC 60855-1
®
Edition 1.0 2009-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Insulating foam-filled tubes and solid rods –
Part 1: Tubes and rods of a circular cross-section
Travaux sous tension – Tubes isolants remplis de mousse et tiges isolantes –
Partie 1: Tubes et tiges de section circulaire
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 13.260; 29.240.20; 29.260 ISBN 978-2-88910-314-0
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms and definitions .7
4 Requirements .8
4.1 Materials and design .8
4.2 Electrical requirements.8
4.3 Mechanical requirements.8
4.4 Tolerance requirements on outer diameters.8
4.5 Marking .9
4.6 Packaging .9
5 Testing provisions .9
5.1 General .9
5.2 Type test conditions .9
5.2.1 General .9
5.2.2 Groups and test pieces.10
5.3 Visual and dimensional checks.10
5.3.1 General .10
5.3.2 Visual check .10
5.3.3 Dimensional check .10
5.4 Electrical tests.11
5.4.1 Dielectric test under dry condition.11
5.4.2 Dielectric test after exposure to water.12
5.4.3 Wet test.19
5.5 Mechanical tests .21
5.5.1 Bending test .21
5.5.2 Torsion test .23
5.5.3 Crushing test on tube .25
5.5.4 Electrical test after mechanical ageing.26
5.5.5 Dye penetration test .27
5.5.6 Durability of marking.27
6 Conformity assessment of tubes and rods having completed the production phase.27
7 Modifications .27
Annex A (informative) Usual outer diameters .28
Annex B (normative) Plan of carrying out of the type tests .29
Annex C (normative) Classification of defects and associated requirements and tests .30
Bibliography.31
Figure 1 – Dielectric test under dry condition – Typical test arrangement.11
Figure 2 – Dielectric test after exposure to water – Typical test arrangement.13
Figure 3 – Dielectric test after exposure to water – Assembly diagram of the test piece
to the guard electrodes .14
Figure 4 – Dielectric test after exposure to water – Constructional drawings for guard
electrodes and parts .16
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60855-1 © IEC:2009 – 3 –
Figure 5 – Examples of constructional drawings for guard electrode parts according to
some test piece diameters .17
Figure 6 – Wet test .21
Figure 7 – Bending test.22
Figure 8 – Torsion test – Examples for fixing tube or rod .24
Figure 9 – Crushing test.26
Table 1 – Tolerances on outer diameter d .8
Table 2 – Maximum values for the current I .19
Table 3 – Values of F , f and F for bending test .23
d r
Table 4 – Values of C , a and C for torsion test .25
d d r
Table 5 – Values of F and F for crushing test .25
d r
Table A.1 – Usual diameters.28
Table B.1 – Chronological order of the type tests.29
Table C.1 – Classification of defects and associated requirements and tests .30
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LIVE WORKING –
INSULATING FOAM-FILLED TUBES AND SOLID RODS –
Part 1: Tubes and rods of a circular cross-section
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
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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 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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60855-1 has been prepared by technical committee 78: Live
working.
This first edition of IEC 60855-1 cancels and replaces the first edition of IEC 60855 published
in 1985, and constitutes a technical revision.
It includes the following significant technical changes from the previous IEC 60855:
– the clarification of the limitation of the standard to foam-filled tubes and solid rods of
circular cross section;
– the review of the maximum tolerances on the outer diameter;
– the addition of a requirement for the individual packaging of the product;
– the addition of a requirement for the marking of the outer diameter on the product;
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60855-1 © IEC:2009 – 5 –
– the review of the requirements and test provisions (except for some mechanical test
provisions) to permit any diameters of foam-filled tubes and solid rods:
• the table of electrical tests specifying the limit of current is replaced by a formula;
– the introduction of a subclause for the electrical requirements (4.2) and the clarification of
test results (temperature rise, 5.4.1 and 5.4.3.3);
– the dielectric test before exposure to humidity is replaced by a dielectric test under dry
condition with different test set-up and different sanction;
– the application of the dye penetration test to the insulating solid rods;
– the introduction of a test for the durability of marking;
– the implementation of the outputs of IEC 61318, focusing on the classification of defects
and practicability of test provisions.
Technical committee 78 is considering the preparation of IEC 60855-2, which would cover
tubes and rods of cross-section other than circular.
The text of this standard is based on the following documents:
FDIS Report on voting
78/817/FDIS 78/828/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 60855 series, published under the general title Live working –
Insulating foam-filled tubes and solid rods , can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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INTRODUCTION
This International Standard is intended to define essential characteristics necessary for the
safe use of the tubes and rods, to determine appropriate requirements and to provide testing
provisions.
This standard has been prepared in accordance with the requirements of IEC 61477.
The product covered by this standard may have an impact on the environment during some or
all stages of its life cycle. These impacts can range from slight to significant, be of short-term
or long-term, and occur at the global, regional or local level.
This standard does not include requirements and test provisions for the manufacturers of the
product, or recommendations to the users of the product for environmental improvement.
However, all parties intervening in its design, manufacture, packaging, distribution, use,
maintenance, repair, reuse, recovery and disposal are invited to take account of
environmental considerations.
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60855-1 © IEC:2009 – 7 –
LIVE WORKING –
INSULATING FOAM-FILLED TUBES AND SOLID RODS –
Part 1: Tubes and rods of a circular cross-section
1 Scope
This part of IEC 60855 is applicable to insulating foam-filled tubes and solid rods, of a circular
cross-section, made of synthetic materials and intended to be used for the manufacture and
construction of tools and equipment for carrying out live work on electrical systems operating
at voltages above 1 kV.
Tubes and rods of cross-section other than circular are not covered by this part of IEC 60855.
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 60060-1, High-voltage test techniques – Part 1: General definitions and test
1)
requirements
IEC 60212:1971, Standard conditions for use prior to and during the testing of solid electrical
insulating materials
IEC 61318:2007, Live working – Conformity assessment applicable to tools, devices and
equipment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61318 and the
following apply.
3.1
insulating tube
long-shaped hollow piece, normally of circular cross section, which is constructed or formed
from synthetic insulating and rigid material and is normally reinforced, the interior of which
can be foam-filled
[Definition 2.4.6 of IEC 60743]
___________
1)
A third edition of IEC 60060-1 is in preparation.
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3.2
insulating rod
long-shaped piece, normally of circular cross section, which is constructed or formed from
synthetic insulating and rigid material and which may be reinforced
[Definition 2.4.5 of IEC 60743]
NOTE To simplify this standard, the word “tube” will be used for the “insulating foam filled tube of a circular
cross-section” and the word “rod” for the “solid rod of a circular cross-section”.
3.3
foam
insulating material composed of closed cells, generally made of polyurethane, used to prevent
the ingress and migration of moisture
[Definition 2.4.2 of IEC 60743, modified]
4 Requirements
4.1 Materials and design
Tubes and rods shall be made of synthetic materials which may have reinforcing.
NOTE Yellow, orange and red are the preferred colours to indicate that the material has insulating properties.
The final coating, if any, shall be transparent.
The foam filling shall be bonded to the wall of the tube, and neither the foam nor the bond
shall deteriorate during the tests, other than those tests which lead to destruction of the parts.
The foam filling shall be free of voids, separations, cracks or other defects.
4.2 Electrical requirements
The material and the design of tubes and rods shall have insulating properties.
The external surface of the tubes and rods shall exhibit hydrophobic properties.
NOTE A test is under consideration and will be included during the next maintenance cycle of the publication.
4.3 Mechanical requirements
The material and the design of tubes and rods shall have mechanical resistant properties.
4.4 Tolerance requirements on outer diameters
The maximum tolerances permitted on the declared outer diameter (d) of tubes and rods
covered by this standard, shall be as specified in Table 1.
Table 1 – Tolerances on outer diameter d
Outer
diameter
d < 30 30 ≤ d < 40 40 ≤ d < 50 50 ≤ d < 60 60 ≤ d < 70 70 ≤ d < 80 80 ≤ d
mm
Tolerance
± 0,5 ± 0,55 ± 0,6 ± 0,65 ± 0,7 ± 0,75 ± 0,8
mm
For information and for reasons of compatibility with existing equipment, Table A.1 gives the
diameters commonly used for live working.
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60855-1 © IEC:2009 – 9 –
4.5 Marking
Embossed marking is prohibited. The marking of each tube or rod shall include the following
information as a minimum:
– name or trademark of the manufacturer;
– outer diameter;
– date of manufacture (month and year) and identification number when available;
– number of the relevant IEC standard (IEC 60855-1).
Other characteristics or information not needed at the work location, like the year of
publication of the standard, shall be associated to the product item by other means, such as
coded information (bar codes, microchips, etc.), or shall be associated to its packaging.
The marking shall be clearly legible to a person with normal or corrected vision, without
additional magnification. The marking shall be durable and shall not affect the electrical
performance of tubes or rods.
4.6 Packaging
Each tube and rod shall be delivered individually packed.
NOTE The packaging should reduce abrasive or direct contact with other tubes or rods or any surface that would
damage the polished surface.
5 Testing provisions
5.1 General
This standard provides testing provisions to demonstrate that the tubes and rods comply with
the requirements of Clause 4. These testing provisions are primarily intended to be used for
type testing for validation of the design input. Where relevant, alternative means (calculation,
examination, tests, etc.), are specified within the test subclauses for the purpose of tubes and
rods having completed the production phase (see Annex C).
5.2 Type test conditions
5.2.1 General
To comply with this standard, the design of the product shall fulfil all the type tests listed in
Table B.1.
The type tests shall be carried out following the order given in the Table B.1.
Each test shall be carried out on each separate test piece in the relevant group.
Any test piece failing to pass any one of the tests mentioned in Table B.1 shall result in the
design being rejected.
For all type tests, environmental conditions in the test room shall comply with the normal
atmospheric conditions provided in Table I of IEC 60212, at a temperature of between 15 °C
and 35 °C, with a relative humidity between 25 % and 75 % (taking into account Note 5 of
Table I of IEC 60212).
NOTE This standard covers tubes and rods for use at temperatures between –25 °C and +55 °C and at a relative
humidity between 20 % and 93 %. For tools intended to be used in unusual atmospheric conditions (higher or lower
temperatures, higher relative humidity), the tests should be more restricting and be carried out in appropriate
conditions.
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Unless otherwise specified, for all type tests, the tolerance on the dimensions shall be
± 0,5 %.
When a visual check is specified, it shall be understood to be a visual check by a person with
normal or corrected vision without additional magnification.
5.2.2 Groups and test pieces
The manufacturer shall supply lengths of tubes and rods to provide the following groups of
test pieces.
Group 1: three test pieces of 0,3 m.
Group 2: three test pieces of 1,2 m, cut at least to 0,1 m from the end of the initial length
of rod or tube provided by the manufacturer.
Group 3: three test pieces of 2,5 m in case of tube and 2 m in case of rod.
Group 4: three test pieces of 1,2 m.
Group 5: (for tubes only): three test pieces of length equal to 3 times the outer
diameter ± 5 %.
Group 6: three test pieces of 2,5 m.
Group 7: three test pieces of (100 ± 5) mm, cut at least to 100 mm from the end of the
initial length of rod or tube provided by the manufacturer.
Group 8: one test piece of 2 m, kept as a specimen.
The equipment used to cut the test pieces shall not leave any trace of overheating on the
cross-section. The cut shall be clean, showing no signs of tearing of the fibres.
5.3 Visual and dimensional checks
5.3.1 General
These checks shall be carried out to ensure that the general requirements are fulfilled and
that the dimensions comply with the specifications.
5.3.2 Visual check
Initial lengths and test pieces shall be checked visually to verify the elements of marking, the
packaging and to detect constructional defects.
There are two levels of inspection to detect constructional defects:
a) A first visual check shall be carried out on each of the initial lengths of tube and rod
provided by the manufacturer before the test pieces are cut from them. This is to detect
any surface defects such as obviously faulty bonding between the fibre and the resin, air
bubbles underneath the varnish, foreign bodies, protrusions, dirt, bumps or scratches. Any
defect shall result in rejection of the initial length.
b) A second visual check shall be carried out on each of the test pieces after they have been
cut. This is to detect any internal defects around the visible part of the cross-section, and
more particularly, any signs of detachment between the foam and the resin, and foam of
poor quality (voids, cracks). Any such defect shall result in rejection of the test piece.
5.3.3 Dimensional check
The purpose of the dimensional check is to verify that diameters comply with the marking, and
the tolerance requirements comply with 4.4.
The dimensional check shall be carried out on each of the initial lengths, before the test
pieces are cut from them, at both ends and in the middle.
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60855-1 © IEC:2009 – 11 –
5.4 Electrical tests
5.4.1 Dielectric test under dry condition
An example of suitable test arrangement is given in Figure 1.
Dimensions in millimetres
IEC 1860/09
Key
A Insulating table
B Tube or rod to be tested
C Stranded wire electrodes not less than 5 mm width
D Metallic support
Figure 1 – Dielectric test under dry condition – Typical test arrangement
The dielectric test shall be carried out in accordance with IEC 60060-1. The tubes and rods
shall be subjected to an alternating voltage of 100 kV r.m.s at power frequency applied
between electrodes 30 cm apart, for 1 min.
The test shall be considered as passed if the tubes and rods fulfil the following:
– no flashover, no sparkover or puncture;
– no visual sign of tracking or ero
...
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