IEC 61230:2008

Live working - Portable equipment for earthing or earthing and short-circuiting

IEC 61230:2008 is applicable to portable equipment, with or without matching connection points, for temporary earthing or earthing and short-circuiting of electrically isolated or de-energized a.c. and d.c. installations, distribution and transmission networks, whether they are overhead or underground or of low or high voltage. This standard covers equipment comprising an earthing or a short-circuiting or an earthing and short-circuiting device and insulating component. The performance of equipment, devices and components covered by this standard is based on electro-dynamic and electro-thermal effects acting during short-circuit. The withstand capability of the devices and equipment is expressed by their rated values of current, time and peak factor. No rated voltage is given, but the geometrical dimensions of the equipment are also linked to the voltage of the installation. This second edition cancels and replaces the first edition published in 1993. It constitutes a technical revision. The major changes are:
- extension of the scope to cover the use of equipment on d.c. installations;
- extension of the use of aluminium to all conductive parts of the device;
- possibility of using this standard for separate components of the equipment;
- general revision of requirements and tests;
- revision of existing annexes;
- introduction of a new informative Annex D giving guidelines for determination of the equivalent r.m.s. value of a short-circuit current and of a new normative Annex F on classification of defects.

Travaux sous tension - Equipements portables de mise à la terre ou de mise à la terre et en court-circuit

La CEI 61230:2008 est applicable aux équipements portables avec ou sans points de connexion assortis, pour mise temporaire à la terre ou mise à la terre et en court-circuit des installations électriques à courant alternatif ou à courant continu, isolées ou hors tension, des réseaux de distribution et de transport, qu'ils soient aériens ou souterrains et de tension basse ou haute. La présente norme couvre l'équipement comprenant un dispositif de mise à la terre ou de court-circuit, ou de mise à la terre et en court-circuit, et un composant isolant. La performance des équipements, dispositifs et composants couverts par la présente norme, est basée sur les effets électrodynamiques et électrothermiques mis en jeu durant le court-circuit. La capacité de tenue des équipements et dispositifs est exprimée par leurs valeurs assignées de courant, de temps et de facteur de crête. Aucune tension assignée n'est donnée mais les dimensions géométriques de l'équipement sont liées à la tension de l'installation. La seconde édition annule et remplace la première édition publiée en 1993. Cette édition constitue une révision technique. Les principaux changements sont:
- l'extension du domaine d'application pour couvrir l'usage des équipements sur des installations à courant continu;
- l'extension de l'usage de l'aluminium à toutes les parties conductrices du dispositif;
- la possibilité d'utiliser la présente norme pour des composants séparés de ces équipements;
- la révision générale des exigences et des essais;
- la révision des annexes existantes;
- l'introduction d'une nouvelle Annexe D informative proposant un guide pour déterminer la valeur efficace équivalente d'un courant de court-circuit et d'une nouvelle Annexe F normative traitant de la classification des défauts.

General Information

• Status: Published
• Publication Date: 08-Jul-2008
• ICS: 13.260 - Protection against electric shock. Live working
• ICS: 29.240.20 - Power transmission and distribution lines
• ICS: 29.260.99 - Other electrical equipment for working in special conditions
• Technical Committee: TC 78 - Live working
• Drafting Committee: WG 13 - TC 78/WG 13
• Current Stage: PPUB - Publication issued
• Start Date: 31-Jul-2008
• Completion Date: 09-Jul-2008

Relations

• Revises: IEC 61230:1993/COR1:1999 - Corrigendum 1 - Live working - Portable equipment for earthing or earthing and short-circuiting
• Effective Date: 05-Sep-2023
• Revises: IEC 61230:1993/COR2:2000 - Corrigendum 2 - Live working - Portable equipment for earthing or earthing and short-circuiting
• Effective Date: 05-Sep-2023
• Revises: IEC 61230:1993/COR3:2000 - Corrigendum 3 - Live working - Portable equipment for earthing or earthing and short-circuiting
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61230
Edition 2.0 2008-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Portable equipment for earthing or earthing and short-circuiting

Travaux sous tension – Equipements portables de mise à la terre ou de mise à la
terre et en court-circuit
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IEC 61230
Edition 2.0 2008-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Live working – Portable equipment for earthing or earthing and short-circuiting

Travaux sous tension – Equipements portables de mise à la terre ou de mise à la
terre et en court-circuit
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 13.260; 29.240.20; 29.260.99 ISBN 2-8318-9875-7
– 2 – 61230 © IEC:2008
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope.8
2 Normative references .12
3 Terms and definitions .13
4 Requirements .17
4.1 General .17
4.2 Electrical rating .18
4.3 Cables for earthing and short-circuiting .18
4.3.1 Selection of cables .18
4.3.2 Earthing cables used on solidly earthed (neutral) systems.19
4.3.3 Earthing cables used on non-solidly earthed (neutral) systems.19
4.4 Short-circuiting bars .19
4.5 Connections of cables to rigid parts within devices .20
4.6 Clamps.20
4.7 Earthing and short-circuiting device.20
4.8 Basic safety requirements for the insulating element(s) of the insulating
component .21
4.9 Marking .21
4.9.1 General .21
4.9.2 Marking on earthing and short-circuiting device .21
4.9.3 Marking on clamp .22
4.9.4 Marking on cable .22
4.9.5 Marking on other components.22
4.10 Instructions for use.22
5 Tests .23
5.1 General .23
5.2 Verification and checking .23
5.3 Tests for the selection of cables .24
5.3.1 Cables complying with IEC 61138.24
5.3.2 Cables not complying with IEC 61138.24
5.4 Fatigue and humidity penetration tests on cable with end fittings.24
5.4.1 Fatigue test .24
5.4.2 Humidity penetration test.26
5.5 Tension test on cable with end fittings.26
5.6 Test on clamps, permanent connection points and connections .27
5.6.1 Tests for tightening types .27
5.6.2 Tests for non-tightening types .27
5.7 Short-circuit current test .27
5.7.1 General .27
5.7.2 Preparation of test pieces.29
5.7.3 Test set-ups and test arrangements.33
5.7.4 Test current, Joule-integral and duration .34
5.7.5 Documentation and evaluation of the test .35
5.7.6 Alternative means to short-circuit current test for conformity
assessment during production phase.36

61230 © IEC:2008 – 3 –
5.8 Durability of marking .36
6 Conformity assessment .36
7 Modifications .36
Annex A (informative) Guidelines for portable equipment for earthing to be used on
railway systems .37
Annex B (informative) Guidelines for earthing sticks .41
Annex C (informative) Guidelines for selection, use and maintenance of portable
earthing or earthing and short-circuiting equipment.45
Annex D (informative) Guideline for determination of the equivalent r.m.s. value of a
short-time current during a short-circuit of a given duration.56
Annex E (normative) List of type tests.58
Annex F (normative) Classification of defects .59
Bibliography.60

Figure 1 – Examples of portable equipment and device for installations, network and
railway systems application.9
Figure 2 – Connection diagrams of single and multi-phase earthing and short-
circuiting devices for network application .11
Figure 3 – Illustration of a three-phase earthing and short-circuiting device with short-
circuiting bar and earthing cable(s) for installation and network application.12
Figure 4 – Apparatus for fatigue testing with bending and twisting .25
Figure 5 – Examples of multiple combinations of clamps accommodating different
shapes and sizes of connection points .29
Figure 6 – Test set-ups for testing multi-phase devices connected between rigid
conductors for substations .31
Figure 7 – Test set-ups for testing multi-phase short-circuiting devices for overhead
lines.32
Figure 8 – Test set-ups for testing single-phase devices for overhead lines and for
open air substations.33
Figure 9 – Shape of the short-circuit current during test.35
Figure A.1 – Test set-up for testing single phase equipment for railway systems .39
Figure B.1 – Arrangement for bending tests on earthing sticks of circular cross-section.43
Figure B.2 – Arrangement for torsion tests on earthing sticks of circular cross-section.44
Figure C.1 – Curves representing the temperature heating of different nature of
conductors related to the value of the Joule-integral J t.49
Figure C.2 – Determination of conductor temperature from heating.50
Figure C.3 – Determination of J t.51
Figure C.4 – Example of the usable region for a device .53
Figure D.1 – Determination of short-time current.
...