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BS EN IEC 61854:2020

BS EN IEC 61854:2020

$152.82

Overhead lines. Requirements and tests for spacers

Published By Publication Date Number of Pages
BSI 2020 54
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IEC 61854:2020 is available as IEC 61854:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61854:2020 applies to spacers for conductor bundles of overhead lines. It covers rigid spacers, flexible spacers and spacer dampers. It does not apply to interphase spacers, hoop spacers and bonding spacers. This document is written to cover the line design practices and spacers most commonly used at the time of writing. There may be other spacers available for which the specific tests reported in this document may not be applicable. In some cases, test procedures and test values are left to agreement between purchaser and supplier and are stated in the procurement contract. The purchaser is best able to evaluate the intended service conditions, which should be the basis for establishing the test severity. In Annex A, the minimum technical details to be agreed between purchaser and supplier are listed. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Consider the application of spacers on high temperature conductors specifying additional high temperature tests in clamp slip tests and for the characterization of elastic and damping properties; b) Specify as far as possible test parameters and acceptance values; c) Avoid as far as possible the alternative procedures for the same test; d) Introduce a simpler test device for the simulated short circuit current test; e) Introduce test at low temperature on fastener components such as break away bolts and conical spring washers; f) Prescribe a different procedure for subspan oscillation tests on spacers equipped with clamps having rod attachments; g) Modify the test procedure for the aeolian vibration tests; h) Prescribe a different procedure for aeolian vibration tests on spacers equipped with clamps having rod attachments; i) Re-edit all the figures in order to make them more clear and homogeneous; j) Introduce an additional test device for the simulated short circuit current test. Key words: Overhead Lines, Spacers

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
8 English
CONTENTS
10 FOREWORD
12 1 Scope
2 Normative references
13 3 Terms and definitions
14 4 General requirements
4.1 Design
15 4.2 Materials
4.2.1 General
4.2.2 Non-metallic materials
4.3 Mass, dimensions and tolerances
4.4 Protection against corrosion
4.5 Manufacturing appearance and finish
4.6 Marking
4.7 Installation instructions
4.8 Specimen
16 5 Quality assurance
6 Classification of tests
6.1 Type tests
6.1.1 General
6.1.2 Application
6.2 Sample tests
6.2.1 General
6.2.2 Application
17 6.2.3 Sampling and acceptance criteria
6.3 Routine tests
6.3.1 General
6.3.2 Application and acceptance criteria
6.4 Table of tests to be applied
18 Tables
Table 1 – Tests on spacers
19 7 Test methods
7.1 Visual examination
7.2 Verification of dimensions, materials and mass
7.3 Corrosion protection test
7.3.1 Hot dip galvanized components (other than stranded galvanized steel wires)
20 7.3.2 Ferrous components protected from corrosion by methods other than hot dip galvanizing
7.3.3 Stranded galvanized steel wires
7.3.4 Corrosion caused by non-metallic components
7.4 Non-destructive tests
7.5 Mechanical tests
7.5.1 Clamp slip tests
22 Figures
Figure 1 – Test arrangements for longitudinal slip tests
25 7.5.2 Tests on bolt sets
Figure 2 – Test arrangement for torsional slip tests
26 Figure 3 – Test arrangement for the spring force test at room temperature
27 7.5.3 Simulated short-circuit current test and compression and tension tests
Figure 4 – Test arrangement for permanent load test on conical washers
31 Figure 5 – Test arrangements for simulated short-circuit current tests
32 Figure 6 – Test arrangements for compression and tension test
33 7.5.4 Characterisation of the elastic and damping properties
36 Figure 7 – Typical logaritmic decrement graph
37 7.5.5 Flexibility tests
38 Figure 8 – Sketch of longitudinal displacement test
Figure 9 – Sketch of vertical displacement test
Figure 10 – Sketch of conical displacement test
39 7.5.6 Fatigue tests
Figure 11 – Sketch of transverse horizontal displacement test
40 Figure 12 – Test arrangements for subspan oscillation tests
42 7.6 Tests to characterise elastomers
7.6.1 General
7.6.2 Tests
7.6.3 Ozone resistance test
Figure 13 – Test arrangement for aeolian vibration test
43 Table 2 – Tests on elastomers
44 7.7 Electrical tests
7.7.1 Corona and radio interference voltage (RIV) tests
7.7.2 Electrical resistance test
45 7.8 Verification of vibration behaviour of the bundle/spacer system
46 Annexes
Annex A (normative) Minimum technical details to be agreed between purchaser and supplier
47 Annex B (informative) Compressive forces in the simulated short-circuit current test
48 Annex C (informative) Characterisation of the elastic and damping properties Stiffness-Damping Method
Figure C.1 – Rotation of spacer arm around the centre of the hinge
49 Figure C.2 – Vector representation of formula C.2
50 Annex D (informative) Verification of vibration behaviour of the bundle/spacer system
D.1 General
D.2 Aeolian vibration
51 D.3 Subspan oscillation
52 Annex E (informative) Description of HT conductors as given in CIGRE TB 695‑2017 [7]
53 Bibliography

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BS EN IEC 61854:2020
$152.82