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IEC 61854
Edition 2.0 2020-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Overhead lines – Requirements and tests for spacers
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IEC 61854
Edition 2.0 2020-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Overhead lines – Requirements and tests for spacers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.240.20 ISBN 978-2-8322-7900-7
– 2 – IEC 61854:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 General requirements . 8
4.1 Design . 8
4.2 Materials . 9
4.2.1 General . 9
4.2.2 Non-metallic materials . 9
4.3 Mass, dimensions and tolerances . 9
4.4 Protection against corrosion . 9
4.5 Manufacturing appearance and finish . 9
4.6 Marking . 10
4.7 Installation instructions . 10
4.8 Specimen . 10
5 Quality assurance . 10
6 Classification of tests. 10
6.1 Type tests . 10
6.1.1 General . 10
6.1.2 Application . 10
6.2 Sample tests . 11
6.2.1 General . 11
6.2.2 Application . 11
6.2.3 Sampling and acceptance criteria . 11
6.3 Routine tests. 11
6.3.1 General . 11
6.3.2 Application and acceptance criteria . 11
6.4 Table of tests to be applied . 11
7 Test methods . 14
7.1 Visual examination . 14
7.2 Verification of dimensions, materials and mass . 14
7.3 Corrosion protection test . 14
7.3.1 Hot dip galvanized components (other than stranded galvanized steel
wires) . 14
7.3.2 Ferrous components protected from corrosion by methods other than
hot dip galvanizing . 15
7.3.3 Stranded galvanized steel wires . 15
7.3.4 Corrosion caused by non-metallic components . 15
7.4 Non-destructive tests . 15
7.5 Mechanical tests . 15
7.5.1 Clamp slip tests . 15
7.5.2 Tests on bolt sets . 23
7.5.3 Simulated short-circuit current test and compression and tension tests . 26
7.5.4 Characterisation of the elastic and damping properties . 33
7.5.5 Flexibility tests . 37
7.5.6 Fatigue tests . 40
7.6 Tests to characterise elastomers . 45
7.6.1 General . 45
7.6.2 Tests . 45
7.6.3 Ozone resistance test . 45
7.7 Electrical tests . 47
7.7.1 Corona and radio interference voltage (RIV) tests. 47
7.7.2 Electrical resistance test . 48
7.8 Verification of vibration behaviour of the bundle/spacer system . 49
Annex A (normative) Minimum technical details to be agreed between purchaser and
supplier . 50
Annex B (informative) Compressive forces in the simulated short-circuit current test . 51
Annex C (informative) Characterisation of the elastic and damping properties
Stiffness-Damping Method . 52
Annex D (informative) Verification of vibration behaviour of the bundle/spacer system . 54
D.1 General . 54
D.2 Aeolian vibration . 54
D.3 Subspan oscillation . 55
Annex E (informative) Description of HT conductors as given in
CIGRE TB 695‑2017 [7] . 56
Bibliography . 57
Figure 1 – Test arrangements for longitudinal slip tests . 18
Figure 2 – Test arrangement for torsional slip tests . 22
Figure 3 – Test arrangement for the spring force test at room temperature . 24
Figure 4 – Test arrangement for permanent load test on conical washers . 25
Figure 5 – Test arrangements for simulated short-circuit current tests . 30
Figure 6 – Test arrangements for compression and tension test . 32
Figure 7 – Typical logaritmic decrement graph . 36
Figure 8 – Sketch of longitudinal displacement test . 38
Figure 9 – Sketch of vertical displacement test . 39
Figure 10 – Sketch of conical displacement test . 39
Figure 11 – Sketch of transverse horizontal displacement test . 40
Figure 12 – Test arrangements for subspan oscillation tests . 43
Figure 13 – Test arrangement for aeolian vibration test . 45
Figure C.1 – Rotation of spacer arm around the centre of the hinge . 52
Figure C.2 – Vector representation of formula C.2 . 53
Table 1 – Tests on spacers . 13
Table 2 – Tests on elastomers . 47
– 4 – IEC 61854:2020 RLV © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
OVERHEAD LINES –
REQUIREMENTS AND TESTS FOR SPACERS
FOREWORD
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international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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