IEC 62509:2010

IEC 62509 ®
Edition 1.0 2010-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Battery charge controllers for photovoltaic systems – Performance and
functioning
Contrôleurs de charge de batteries pour systèmes photovoltaïques –
Performance et fonctionnement
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IEC 62509 ®
Edition 1.0 2010-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Battery charge controllers for photovoltaic systems – Performance and
functioning
Contrôleurs de charge de batteries pour systèmes photovoltaïques –
Performance et fonctionnement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 27.160 ISBN 978-2-88912-307-0
– 2 – 62509 Ó IEC:2010
CONTENTS
FOREW ORD . 4
1 Sc o pe . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Functionality and performance requirements of a PV BCC . 8
4.1 Ge n eral . 8
4.2 Applicability of requirements . 8
4.3 Battery lifetime protection requirements . 9
4.3.1 Prevent leakage current from battery to PV generator . 9
4.3.2 Basic battery charging functions . 9
4.3.3 Charging regime . 9
4.3.4 Set-point security . 10
4.3.5 Load disconnect capability . 11
4.4 Energy performance requirements . 11
4.4.1 Stand by self-consumption . 11
4.4.2 BCC efficiency . 11
4.5 Protection and fail safe requirements . 11
4.5.1 Thermal performance . 11
4.5.2 Overcurrent operation . 12
4.5.3 PV generator and battery reverse polarity . 12
4.5.4 Open circuit on battery terminals (no battery connection) . 12
4.6 User interface requirements . 12
4.6.1 General . 12
4.6.2 Operational information. 12
4.6.3 User adjustable set-points and parameters . 13
4.6.4 Alarms . 13
5 Tests . 13
5.1 General conditions for tests. 13
5.1.1 Setup and preconditioning for tests . 13
5.1.2 DC power sources for testing . 14
5.1.3 General test setup . 14
5.1.4 Reverse current test setup . 15
5.1.5 Charging cycle test setup . 16
5.1.6 Efficiency, thermal performance and PV overcurrent test setup . 18
5.2 Battery lifetime protection tests . 19
5.2.1 Battery to PV generator leakage current test . 19
5.2.2 Charging cycle tests . 19
5.2.3 Load disconnect / load reconnect test . 20
5.3 Energy performance tests . 21
5.3.1 Standby self-consumption test . 21
5.3.2 Efficiency test . 22
5.4 Protection and fail safe tests . 22
5.4.1 Thermal performance test . 22
5.4.2 PV overcurrent protection test . 23
5.4.3 Load over current protection test . 23
5.4.4 Battery reverse polarity test. 24

62509 Ó IEC:2010 – 3 –
5.4.5 PV generator reverse polarity test . 24
5.4.6 Battery open circuit test . 25
5.5 User interface tests . 25
Annex A (informative) Battery charging guideline . 27

Figure 1 – General test setup . 15
Figure 2 – Reverse current test setup . 16

Table 1 – Requirements for self consumption . 11
Table A.1 – Battery charging setpoint guideline . 27

– 4 – 62509 Ó IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
BATTERY CHARGE CONTROLLERS FOR PHOTOVOLTAIC SYSTEMS –
PERFORMANCE AND FUNCTIONING
FOREWORD
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International Standard IEC 62509 has
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