IEC 61820-1-2:2024

IEC 61820-1-2 ®
Edition 1.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical installations for lighting and beaconing of aerodromes –
Part 1-2: Fundamental principles – Particular requirements for series circuits

Installations électriques pour l'éclairage et le balisage dans les aérodromes –
Partie 1-2 : Principes fondamentaux – Exigences particulières relatives aux
circuits série
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IEC 61820-1-2 ®
Edition 1.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical installations for lighting and beaconing of aerodromes –

Part 1-2:Fundamental principles – Particular requirements for series circuits

Installations électriques pour l'éclairage et le balisage dans les aérodromes –

Partie 1-2 : Principes fondamentaux – Exigences particulières relatives aux

circuits série
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.50, 93.120 ISBN 978-2-8322-8579-4

– 2 – IEC 61820-1-2:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Requirements . 9
4.1 General . 9
4.2 Series circuit power supply . 9
4.3 Isolation of field circuit . 9
4.4 Electrical supply to series circuit power equipment (i.e. CCRs) . 11
4.5 Series circuit maximum voltage . 11
4.6 Overcurrent protection . 11
4.7 Open circuit protection . 11
4.8 System insulation resistance . 12
4.9 Insulation resistance monitoring . 12
4.10 Operational insulation resistance value . 12
4.11 Fault protection . 12
4.12 Cables . 12
4.12.1 General . 12
4.12.2 Screened (shielded) cables for the primary circuit. 12
4.13 Earthing of equipment . 12
5 Selection and installation of AGL equipment and systems . 13
5.1 General . 13
5.2 Operational conditions . 13
5.2.1 Voltage . 13
5.2.2 Current . 13
5.2.3 Frequency . 13
5.2.4 Power . 13
5.3 Series circuit communication . 13
5.4 Electromagnetic compatibility (EMC) . 13
5.5 Impulse withstand voltage . 14
5.6 Accessibility . 14
5.7 Cable, transformer and duct installation . 14
5.8 Primary and secondary connecting devices . 14
5.9 Proximity of cables. 14
5.10 Labelling . 15
6 Inspection and testing. 15
6.1 Initial verification . 15
6.2 Periodic inspection and testing . 15
6.3 Visual inspection . 16
6.4 Testing . 17
6.4.1 General . 17
6.4.2 Conductor continuity . 17
6.4.3 Insulation resistance of field circuit . 17
6.4.4 SELV and PELV . 19
6.4.5 Earth electrode resistance . 19

6.4.6 Functional testing . 20
6.5 Certification and reporting . 20
6.6 Records . 20
Annex A (informative) New installation insulation value (under development). 21
Annex B (informative) AGL installation certificate . 23
Annex C (informative) Schedule of verification . 31
Bibliography . 34

Figure 1 – Field circuit isolator modes of operation . 11

Table 1 – Test voltages and insulation resistance values . 18
Table A.1 – Theoretical leakage currents in series circuit elements as a function of
cable voltage class . 21
Table B.1 – AGL installation certificate . 23
Table B.2 – AGL periodic inspection and testing report . 26
Table B.3 – AGL circuit continuity and insulation resistance test results. 29
Table C.1 – Schedule of verification . 31

– 4 – IEC 61820-1-2:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSTALLATIONS FOR LIGHTING
AND BEACONING OF AERODROMES –
Part 1-2: Fundamental principles –
Particular requirements for series circuits

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 subjec
...