IEC 60855-1:2016

IEC 60855-1 ®
Edition 2.0 2016-04
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
pleines –
Partie 1: Tubes et tiges de section circulaire

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IEC 60855-1 ®
Edition 2.0 2016-04
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

pleines –
Partie 1: Tubes et tiges de section circulaire

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.260; 29.240.20; 29.260 ISBN 978-2-8322-3348-1

– 2 – IEC 60855-1:2016  IEC 2016
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 Diameters of foam-filled tubes and solid rods . 8
4.5 Marking . 9
4.6 Packaging . 9
5 Tests . 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 . 11
5.4 Electrical tests . 11
5.4.1 General . 11
5.4.2 Dielectric test before and after exposure to humidity . 11
5.4.3 Wet test . 20
5.5 Mechanical tests . 22
5.5.1 Bending test . 22
5.5.2 Torsion test . 24
5.5.3 Crushing test on insulating foam-filled tube . 26
5.5.4 Electrical test after mechanical ageing . 27
5.5.5 Dye penetration test . 28
5.5.6 Durability of marking . 28
6 Conformity assessment of foam-filled tubes and solid rods having completed the
production phase . 28
7 Modifications . 29
Annex A (normative) Plan of carrying out of the type tests . 30
Annex B (normative) Classification of defects and associated requirements and tests . 31
Bibliography . 32

Figure 1 – Typical dielectric test arrangement . 12
Figure 2 – Assembly set-up of the test piece to the guard electrodes . 13
Figure 3 – Constructional drawings for guard electrodes and parts . 15
Figure 4 – Drawings for guard electrode parts according to test piece diameters . 17
Figure 5 – Alternative dielectric test under dry condition – Example of a typical test
arrangement . 19

Figure 6 – Wet test . 21
Figure 7 – Bending test . 23
Figure 8 – Torsion test – Examples for fixing foam-filled tube and solid rod . 25
Figure 9 – Crushing test . 27

Table 1 – Specified diameters . 8
Table 2 – Maximum current I before exposure to humidity . 18
Table 3 – Values of F , f and F for bending test . 24
d r
Table 4 – Values of C , a and C for torsion test . 26
d d r
Table 5 – Values of F and F for crushing test . 26
d r
Table A.1 – Chronological order of the type tests . 30
Table B.1 – Classification of defects and associated requirements and tests . 31

– 4 – IEC 60855-1:2016  IEC 2016
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 IEC on technical matters express,
...