SIST EN IEC 61854:2021

SLOVENSKI STANDARD
oSIST prEN IEC 61854:2019
01-april-2019
1DG]HPQLYRGL=DKWHYHLQSUHVNXVL]DGLVWDQþQLNH
Overhead lines - Requirements and tests for spacers
Freileitungen - Anforderungen und Prüfungen für Feldabstandhalter
Lignes aériennes - Exigences et essais applicables aux entretoises
Ta slovenski standard je istoveten z: prEN IEC 61854:2019
ICS:
29.240.20 Daljnovodi Power transmission and
distribution lines
oSIST prEN IEC 61854:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 61854:2019

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oSIST prEN IEC 61854:2019
11/259/CDV

COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61854 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2019-02-01 2019-04-26
SUPERSEDES DOCUMENTS:
11/254/CD,11/256A/CC

IEC TC 11 : OVERHEAD LINES
SECRETARIAT: SECRETARY:
South Africa Mr John Dlamini
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

TC 7,TC 122
Other TC/SCs are requested to indicate their interest, if any,
in this CDV to the secretary.
FUNCTIONS CONCERNED:

EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they
are aware and to provide supporting documentation.

TITLE:
Overhead lines - Requirements and tests for spacers

PROPOSED STABILITY DATE: 2025

NOTE FROM TC/SC OFFICERS:

Copyright © 2018 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

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oSIST prEN IEC 61854:2019
IEC CDV 61854 Ed2 © IEC 2019 2 11/259/CD
1 CONTENTS
2
3 FOREWORD……………………………………………………………………………………….………4
4 1 Scope . 6
5 2 Normative references . 6
6 3 Definitions. 7
7 4 General requirements . 8
8 4.1 Design. 8
9 4.2 Materials . 8
10 4.2.1 General . 8
11 4.2.2 Non-metallic materials . 8
12 4.3 Mass, dimensions and tolerances . 8
13 4.4 Protection against corrosion . 9
14 4.5 Manufacturing appearance and finish . 9
15 4.6 Marking . 9
16 4.7 Installation instructions . 9
17 4.8 Specimen . 9
18 5 Quality assurance . 9
19 6 Classification of tests . 9
20 6.1 Type tests . 9
21 6.1.1 General . 9
22 6.1.2 Application . 9
23 6.2 Sample tests . 10
24 6.2.1 General . 10
25 6.2.2 Application . 10
26 6.2.3 Sampling and acceptance criteria . 10
27 6.3 Routine tests . 10
28 6.3.1 General . 10
29 6.3.2 Application and acceptance criteria . 10
30 6.4 Table of tests to be applied . 10
31 7 Test methods . 12
32 7.1 Visual examination . 12
33 7.2 Verification of dimensions, materials and mass . 12
34 7.3 Corrosion protection test . 12
35 7.3.1 Hot dip galvanized components (other than stranded galvanized steel wires) 12
36 7.3.2 Ferrous components protected from corrosion by methods otherthan hot dip
37 galvanizing. 13
38 7.3.3 Stranded galvanized steel wires . 13
39 7.3.4 Corrosion caused by non-metallic components . 13
40 7.4 Non-destructive tests . 13
41 7.5 Mechanical tests . 14
42 7.5.1 Clamp slip tests . 14
43 7.5.2 Tests on bolt sets . 17
44 7.5.3 Simulated short-circuit current test and compression and tension tests . 19
45 7.5.4 Characterisation of the elastic and damping properties . 24
46 7.5.5 Flexibility tests . 27

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47 7.5.6 Fatigue tests . 29
48 7.6 Tests to characterise elastomers . 32
49 7.6.1 General . 32
50 7.6.2 Tests. 32
51 7.6.3 Ozone resistance test . 32
52 7.7 Electrical tests. 33
53 7.7.1 Corona and radio interference voltage (RIV) tests . 33
54 7.7.2 Electrical resistance test . 34
55 7.8 Verification of vibration behaviour of the bundle/spacer system . 34
56 D.1 General . 40
57 D.2 Aeolian vibration . 40
58 D.3 Subspan oscillation . 41
59
60 Annex A (normative) Minimum technical details to be agreed between purchaser and
61 supplier 38
62 Annex B (informative) Compressive forces in the simulated short-circuit current test . 39
63 Annex C (informative) Characterisation of the elastic and damping properties
64 Stiffness-Damping Method . 41
65 Annex D (informative) Verification of vibration behaviour of the bundle/spacer system . 43
66 Bibliography . 45
67 Figures 30
68 Table 1 – Tests on spacers . 12
69 Table 2 – Tests on elastomers . 27
70

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71 INTERNATIONAL ELECTROTECHNICAL COMMISSION
72 ––––––––––
73 OVERHEAD LINES –
74 REQUIREMENTS AND TESTS FOR SPACERS
75
76 FOREWORD
77 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
78 all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
79 international co-operation on all questions concerning standardization in the electrical and electronic fields. To
80 this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
81 entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
82 participate in this preparatory work. International, governmental and non-governmental organizations liaising
83 with the IEC also participate in this preparation. The IEC collaborates closely with the International
84 Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
85 two organizations.
86 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
87 international consensus of opinion on the relevant subjects since each technical committee has representation
88 from all interested National Committees.
89 3) The documents produced have the form of recommendations for international use and are published in the form
90 of standards, technical reports or guides and they are accepted by the National Committees in that sense.
91 4) In order to promote international unification, IEC National Committees undertake to apply IEC International
92 Standards transparently to the maximum extent possible in their national and regional standards. Any
93 divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
94 indicated in the latter.
95 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
96 equipment declared to be in conformity with one of its standards.
97 6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
98 of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
99 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts
100 and members of its technical committees and IEC National Committees for any personal injury, property
101 damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including
102 legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any
103 other IEC Publications.
104 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications
105 is indispensable for the correct application of this publication.
106 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject
107 of patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
108
109 International Standard IEC 61854 has been prepared by Maintenance Team MT1:
110 Maintenance of TC 11 documents, of IEC technical committee 11: Overhead lines.
111
112 This second edition cancels and replaces the first edition published in 1998. This
113 edition constitutes a technical revision.
114
115 This edition includes the following significant technical changes with respect to the
116 previous edition:
117
118 a) Consider the application of spacers on high temperature conductors
119 specifying additional high temperature tests in clamp slip tests and for the
120 characterization of elastic and damping properties;
121 b) Specify as far as possible test parameters and acceptance values;
122 c) Avoid as far as possible the alternative procedures for the same test;
123 d) Introduce a simpler test device for the simulated short circuit current test;
124 e) Introduce test at low temperature on fastener components such as break
125 away bolts and conical spring washers;
126 f) Prescribe a different procedure for subspan oscillation tests on spacers
127 equipped with clamps having rod attachments;
128 g) Modify the test procedure for the aeolian vibration tests;

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129 h) Prescribe a different procedure for aeolian vibration tests on spacers
130 equipped with clamps having rod attachments;
131 i) Re-edit all the figures in the standard in order to make them more clear and
132 homogeneous;
133 j) Update the normative references
134 k) Introduce an additional test device for the simulated short circuit current test.
135
136 Annexes A forms an integral part of this standard.
137 Annex B, C, D and E are for information only.
138
139 International Standard IEC 61854 has been prepared by IEC technical committee 11:
140 Overhead lines.
141 The text of this standard is based on the following documents:
FDIS Report on voting
XX/XXX/FDIS XX/XXX/RVD
142
143 Full information on the voting for the approval of this standard can be found in the report on
144 voting indicated in the above table.
145 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
146
147 The committee has decided that the contents of this document will remain unchanged until
148 the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
149 related to the specific document. At this date, the document will be
150
151 reconfirmed,
152 withdrawn,
153 replaced by a revised edition, or
154 amended.
155

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156 OVERHEAD LINES –
157 REQUIREMENTS AND TESTS FOR SPACERS
158
159 1 Scope
160 This International Standard applies to spacers for conductor bundles of overhead lines. It
161 covers rigid spacers, flexible spacers and spacer dampers.
162 It does not apply to interphase spacers, hoop spacers and bonding spacers.
163 NOTE – This standard is written to cover the line design practices and spacers most commonly used at the time of
164 writing. There may be other spacers available for which the specific tests reported in this standard may not be
165 applicable.
166 In some cases, test procedures and test values are left to agreement between purchaser and
167 supplier and are stated in the procurement contract. The purchaser is best able to evaluate
168 the intended service conditions, which should be the basis for establishing the test severity.
169 In annex A, the minimum technical details to be agreed between purchaser and supplier are
170 listed.
171 2 Normative references
172 The following normative documents contain provisions which, through reference in this text,
173 constitute provisions of this International Standard. At the time of publication of this standard,
174 the editions indicated were valid. All normative documents are subject to revision, and parties
175 to agreements based on this International Standard are encouraged to investigate the
176 possibility of applying the most recent editions of the normative documents indicated below.
177 Members of IEC and ISO maintain registers of currently valid International Standards.
178 IEC 60050(466):1990, International Electrotechnical vocabulary (IEV) – Chapter 466:
179 Overhead lines
180 IEC 61284:1997, Overhead lines – Requirements and tests for fittings
181 IEC 60888:1987, Zinc-coated steel wires for stranded conductors
182 ISO 34-1:2015, Rubber, vulcanized or thermoplastic – Determination of tear strength – Part 1:
183 Trouser, angle and crescent test pieces
184 ISO 34-2:2015, Rubber, vulcanized or thermoplastic – Determination of tear strength – Part 2:
185 Small (Delft) test pieces
186 ISO 37:2017, Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain
187 properties
188 ISO 188:2011, Rubber, vulcanized – Accelerated ageing or heat-resistance tests
189 ISO 812:2017, Rubber, vulcanized or thermoplastic – Determination of low temperature
190 brittleness
191 ISO 815-1:2014, Rubber, vulcanized or thermoplastic – Determination of compression set –
192 Part 1: At ambient or elevated temperatures.
193 ISO 815-2:2014, Rubber, vulcanized or thermoplastic – Determination of compression set –
194 Part 2: At low temperaturesISO 868:2003, Plastics and ebonite – Determination of indentation
195 hardness by means of a durometer (Shore hardness)
196 ISO 1183-1:2012, Plastic – Methods for determining the density and relative density of non-
197 cellular plastic
198 ISO 10684:2008, Fasteners – Hot dip galvanized coatings

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199 ISO 1431-1:2012, Rubber, vulcanized or thermoplastic – Resistance to ozone cracking –
200 Part 1: static and dynamic strain test
201 ISO 1461:2009, Hot dip galvanized coatings on fabricated iron and steel articles-
202 Specifications and test methods
203 ISO 1817:2015, Rubber, vulcanized – Determination of the effect of liquids
204 ISO 2781:2018, Rubber, vulcanized – Determination of density
205 ISO 2859-1:1999, Sampling procedures for inspection by attributes – Part 1: Sampling
206 schemes indexed by acceptable quality limit (AQL) for lot-by-lot inspection + Ammendment 1
207 (2011)
208 ISO 2859-2:1985, Sampling procedures for inspection by attributes – Part 2: Sampling plans
209 indexed by limiting quality level (LQ) for isolated lot inspection
210 ISO 2921:2011, Rubber, vulcanized – Determination of low temperature characteristics –
211 Temperature-retraction procedure (TR test)
212 ISO 3417:2008, Rubber – Measurement of vulcanization characteristics with the oscillating
213 disc curemeter
214 ISO 3951-1:2013, Sampling procedures for inspection by variables -- Part 1: Specification for
215 single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a
216 single quality characteristic and a single AQL
217 ISO 3951-2:2013, Sampling procedures for inspection by variables -- Part 2: General
218 specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot
219 inspection of independent quality characteristics
220 ISO 4649:2017, Rubber, vulcanized or thermoplastic – Determination of abrasion resistance
221 using a rotating cylindrical drum device
222 ISO 4662:2017, Rubber, vulcanized or thermoplastic – Determination of rebound resilience
223 ISO 6502-2:2018, Rubber – Measurement of vulcanization characteristics using curemeters –
224 Part 2: Oscillating disc curemeter
225 ISO 9000:2015, Quality management systems – Fundamentasl and vocabularies
226 ISO 9001:2015, Quality management systems – Requirements
227 ISO 9004:2018, Managing for the sustained success of an organization – A quality
228 management approach
229
230 3 Definitions
231 For the purpose of this International Standard the definitions of the International
232 Electrotechnical Vocabulary (IEV) apply, in particular IEC 60050(466). Those which differ or
233 do not appear in the IEV are given below.
234 1.1 3.1 rigid spacer
235 spacer allowing no relative movement between the subconductors at the spacer location
236 1.2 3.2 flexible spacer
237 spacer allowing relative movements between the subconductors at the spacer location
238 1.3 3.3 spacer system
239 complex of spacers and the relevant in-span distribution

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240 1.4 3.4 high temperature conductors (HTC)
241 1.5 conductors which are designed to have a maximum continuous operating temperature
242 over 95°C.
243 1.6 HTCa: conductors using annealed wires,
244 1.7 HTCna: conductors using non-annealed wires
245 1.8 3.5 maximum continuous operating temperature
246 conductor temperature specified by the manufacturer and measured at the outer wire layers
247 4 General requirements
248 4.1 Design
249 The spacer shall be designed as to
250 – maintain subconductor spacing (at spacer locations), within any prescribed limits, under all
251 conditions of service excluding short-circuit currents;
252 – prevent, in subspans between spacers, physical contact between subconductors, except
253 during the passage of short circuit currents when the possibility of contact is accepted
254 provided that the specified spacing is restored immediately following fault clearance;
255 – withstand mechanical loads imposed on the spacer during installation, maintenance and
256 service (including short circuit conditions) without any component failure or unacceptable
257 permanent deformation;
258 – avoid damage to the subconductor under specified service conditions;
259 – be free from unacceptable levels of corona and radio interference under specified service
260 conditions;
261 – be suitable for safe and easy installation. For the bolted and latching clamp the design
262 shall retain all parts when opened for attachment to the conductor;
263 – ensure that individual components will not become loose in service;
264 – be capable of being removed and re-installed on the subconductors without damage to the
265 spacer or subconductors;
266 – maintain its function over the entire service temperature range;
267 – avoid audible noise.
268 NOTE – Other desirable characteristics, which are not essential to the basic functions of the spacer but which may
269 be advantageous to the purchaser, include:
270 - verification of proper installation from the ground,
271 - ease of installation and removal from energized lines
272 Detailed information on design, best practice and experience of spacers and spacer dampers
273 is given in [6]
274
275 4.2 Materials
276 4.2.1 General
277 Spacers shall be made of any materials suitable for their purpose. Unless additional
278 requirements are stated, the material shall conform to the requirements of IEC 61284.
279 4.2.2 Non-metallic materials
280 In addition to the requirements of IEC 61284, the conductivity of the various non-metallic
281 components shall be such that when properly installed
282 – potential differences between metallic components do not cause damage due to
283 discharge;
284 – line current including short circuit current and any current flow through the spacer do not
285 degrade spacer components
286 4.3 Mass, dimensions and tolerances
287 Spacer mass and significant dimensions, including appropriate tolerances, shall be shown on
288 contract drawings.

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289 NOTE – Tolerances applied to the mass and to the dimensions should ensure that the spacers meet their specified
290 mechanical and electrical requirements.
291 4.4 Protection against corrosion
292 In addition to the applicable requirements of IEC 61284, stranded steel wires, if used, shall be
293 protected against corrosion in accordance with IEC 60888.
294 4.5 Manufacturing appearance and finish
295 The spacers shall be free of defects and irregularities; all outside surfaces shall be smooth
296 and all edges and corners well-rounded.
297 4.6 Marking
298 The fitting marking requirements of IEC 61284 shall be applied to all clamp assemblies
299 including those using breakaway bolts.
300 Correct position of the top of the spacer (for example arrows pointing upward), if necessary,
301 shall also be provided.
302 4.7 Installation instructions
303 The supplier shall provide a clear and complete description of the installation procedure and,
304 if required, the in-span location of the spacers.
305 The supplier shall make available any special installation tool that is required.
306 4.8 Specimen
307 All tests described in this standard are based on bolted clamps and clamps with helical
308 fixation. If other types of clamps are tested, the clamps should be installed according the
309 suppliers installation instruction.
310 5 Quality assurance
311 A quality assurance programme taking into account the requirements of this standard can be
312 used by agreement between the purchaser and the supplier to verify the quality of the spacers
313 during the manufacturing process.
314 Detailed information on the use of quality assurance is given in a system as per ISO 9001 or
315 similar.
316 It is recommended that test and measuring equipment used to verify compliance to this
317 standard is routinely maintained and calibrated in accordance with a relevant quality standard.
318 6 Classification of tests
319 6.1 Type tests
320 6.1.1 General
321 Type tests are intended to establish design characteristics. They are normally made once and
322 repeated only when the design or the material of the spacer is changed. The results of type
323 tests are recorded as evidence of compliance with design requirements.
324 6.1.2 Application
325 Spacers shall be subjected to type tests as per Table 1. Each type test shall be performed on
326 three samples which are identical, in all essential respects, with the spacers to be supplied
327 under contract to the purchaser. All units shall pass the tests.
328 The spacers used for tests during which no damage occurs to the units or their components
329 may be used in subsequent tests.
330 NOTE – The unit subjected to type tests can be either a complete spacer or a component of the spacer as
331 appropriate to the test.

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332 6.2 Sample tests
333 6.2.1 General
334 Sample tests are required to verify that the spacers meet the performance specifications of
335 the type test samples. In addition, they are intended to verify the quality of materials and
336 workmanship.
337 6.2.2 Application
338 Spacers shall be subjected to sample tests as per Table 1.
339 The samples to be tested shall be selected at random from the lot offered for acceptance. The
340 purchaser has the right to make the selection.
341 The spacers used for tests during which no damage occurs to the units or their components
342 may be used in subsequent tests.
343 NOTE – The unit subjected to sample tests can be either a complete spacer or a component of the spacer as
344 appropriate to the test.
345 6.2.3 Sampling and acceptance criteria
346 The sampling plan procedures according to ISO 2859-1 and ISO 2859-2 (inspection by
347 attributes) and ISO 3951 (inspection by variables) and the detailed procedures (inspection
348 level, AQL, single, double or multiple sampling, etc.) shall be agreed between purchaser and
349 supplier for each different attribute or variable.
350 NOTE – Sampling inspection by variables is an acceptance sampling procedure to be used in place of inspection
351 by attributes when it is more appropriate to measure on some continuous scale the characteristic(s) under
352 consideration. In the case of failur
...