IEC TS 62257-9-8:2020

Renewable energy and hybrid systems for rural electrification - Part 9-8: Integrated systems - Requirements for stand-alone renewable energy products with power ratings less than or equal to 350 W

IEC TS 62257-9-8:2020 provides baseline requirements for quality, durability and truth in advertising to protect consumers of off-grid renewable energy products. Evaluation of these requirements is based on tests described in IEC TS 62257-9-5. This document can be used alone or in conjunction with other international standards that address the safety and durability of components of off-grid renewable energy products.

Systèmes à énergie renouvelable et systèmes hybrides destinés à l'électrification rurale - Partie 9-8: Systèmes intégrés - Exigences applicables aux produits à énergie renouvelable autonomes d'une puissance assignée inférieure ou égale à 350 W

IEC TS 62257-9-8:2020 spécifie les exigences de base concernant la qualité, la durabilité et la lutte contre la publicité mensongère afin de protéger les consommateurs de produits à énergie renouvelable hors réseau. L'évaluation de ces exigences repose sur les essais décrits dans l'IEC TS 62257-9-5. Le présent document peut être utilisé seul ou en conjonction avec d'autres normes internationales qui traitent de la sécurité et de la durabilité des composants des produits à énergie renouvelable hors réseau.
L'objet du présent document est de fournir des normes de base pour la qualité, la durabilité et la lutte contre la publicité mensongère afin de protéger les consommateurs de produits à énergie renouvelable autonomes. Le présent document traite en particulier des produits à énergie renouvelable qui sont emballés et proposés aux consommateurs finaux sur le lieu d'achat comme des produits uniques et autonomes qui ne nécessitent pas de composants supplémentaires pour fonctionner. Le présent document s'applique aux produits dont la puissance de crête assignée est inférieure ou égale à 350 W. Si la plupart des dispositions s'appliquent à l'ensemble des produits de cette gamme, seules quelques-unes s'appliquent aux produits dont la puissance de crête assignée est supérieure à 10 W et inférieure ou égale à 350 W.

General Information

• Status: Published
• Publication Date: 09-Jun-2020
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.160 - Solar energy engineering
• Technical Committee: TC 82 - Solar photovoltaic energy systems
• Drafting Committee: JWG 1 - TC 82/JWG 1
• Current Stage: PPUB - Publication issued
• Start Date: 28-May-2020
• Completion Date: 10-Jun-2020

Standards Content (Sample)

IEC TS 62257-9-8 ®
Edition 1.0 2020-06
TECHNICAL
SPECIFICATION
Renewable energy and hybrid systems for rural electrification –
Part 9-8: Integrated systems – Requirements for stand-alone renewable energy
products with power ratings less than or equal to 350 W

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC TS 62257-9-8 ®
Edition 1.0 2020-06
TECHNICAL
SPECIFICATION
Renewable energy and hybrid systems for rural electrification –

Part 9-8: Integrated systems – Requirements for stand-alone renewable energy

products with power ratings less than or equal to 350 W

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-8239-7

– 2 – IEC 62257-9-8:2020 © IEC 2020
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 10
4 Test requirements . 15
4.1 General . 15
4.2 Initial testing requirements . 17
4.2.1 General . 17
4.2.2 Quality test method . 17
4.2.3 Accelerated verification method . 17
4.2.4 Pay-as-you-go targeted testing . 18
4.2.5 Product families . 19
4.2.6 Similar products . 19
4.2.7 Verification of product identicality . 20
4.2.8 Reference to other standards . 20
4.3 Recurring testing requirements . 22
4.4 Retesting of non-conforming products . 22
4.5 General testing requirements applicable to all testing pathways . 23
4.5.1 General . 23
4.5.2 Exception for accessory lights . 23
5 Quality requirements . 24
5.1 General . 24
5.2 Truth in advertising . 26
5.2.1 General . 26
5.2.2 Assessment of run time values . 27
5.2.3 Information and performance reporting requirements . 28
5.2.4 Fee-for service or pay-as-you-go (PAYG) metering requirements . 31
5.2.5 Included appliances requirements . 31
5.2.6 Assessment of ingress protection advertisements . 31
5.3 Ports requirements. 32
5.3.1 General . 32
5.3.2 Voltage converters . 33
5.3.3 Ports with multiple output voltages . 33
5.3.4 Appliance voltage compatibility requirements . 33
5.3.5 Truth-in-advertising requirements . 33
5.3.6 Functionality requirements . 34
5.4 Lumen maintenance . 37
5.5 Health and safety . 37
5.5.1 AC-DC power supply safety . 37
5.5.2 Hazardous substances . 37
5.5.3 Circuit and overload protection . 38
5.5.4 Wiring and connector safety . 38
5.5.5 Additional tests for PV modules . 38
5.5.6 Requirements for systems with large PV modules or arrays . 41
5.6 Battery requirements . 41

IEC 62257-9-8:2020 © IEC 2020 – 3 –
5.6.1 Provision of battery specification sheets . 41
5.6.2 Battery charge control . 41
5.6.3 Specific requirements for lithium-based batteries . 43
5.6.4 Battery durability . 44
5.7 Quality and durability . 44
5.7.1 General . 44
5.7.2 Physical and water ingress protection . 44
5.7.3 Drop test requirements . 47
5.7.4 Soldering and electronics quality . 49
5.7.5 Switch, gooseneck, connector, and moving parts durability . 49
5.7.6 Strain relief durability . 49
5.7.7 Outdoor cable durability (size B products only) . 49
5.7.8 PV overvoltage requirement . 50
5.7.9 Miswiring protection requirement . 51
5.7.10 Requirements specific to systems with non‑plug‑and‑play connections . 51
5.8 Consumer information . 52
5.8.1 Warranty requirements . 52
5.8.2 Date of manufacture . 53
5.8.3 User manual requirements (size B products only) . 53
5.8.4 Component replacement methods (size B products only) . 54
Annex A (normative) Testing of similar products . 55
A.1 General . 55
A.2 Guidelines . 55
A.2.1 Visual screening . 55
A.2.2 Lumen maintenance and light output . 55
A.2.3 Charge controller testing. 56
A.2.4 PV modules . 56
A.2.5 Battery durability testing . 56
A.2.6 Connector durability testing . 56
A.2.7 Battery testing, full-battery run time, solar run time, and energy service
calculations . 56
A.2.8 Miswiring protection . 57
A.2.9 Output overload . 57
A.2.10 PV overvoltage . 57
A.2.11 Assessment of DC ports . 57
A.2.12 Power consumption and charging efficiency. 57
A.2.13 Voltage range . 57
A.2.14 Changes to firmware or software . 58
Annex B (normative) Partial shading test for photovoltaic modules . 59
B.1 General . 59
B.2 Equipment requirements . 59
B.3 Test prerequisites . 60
B.4 Procedure . 60
B.5 Calculations . 62
B.6 Pass criteria . 62
B.7 Reporting . 62
Annex C (normative) Visual screening and durability tests for photovoltaic modules . 64
C.1 General . 64
C.2 Durability of markings test . 64

– 4 – IEC 62257-9-8:2020 © IEC 2020
C.2.1 Equipment requirements . 64
C.2.2
...

IEC TS 62257-9-8 ®
Edition 1.0 2020-06
TECHNICAL
SPECIFICATION
SPECIFICATION
TECHNIQUE
Renewable energy and hybrid systems for rural electrification –
Part 9-8: Integrated systems – Requirements for stand-alone renewable energy
products with power ratings less than or equal to 350 W

Systèmes à énergie renouvelable et systèmes hybrides destinés à
l'électrification rurale –
Partie 9-8: Systèmes intégrés – Exigences applicables aux produits à énergie
renouvelable autonomes d'une puissance assignée inférieure ou égale à 350 W

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

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IEC TS 62257-9-8 ®
Edition 1.0 2020-06
TECHNICAL
SPECIFICATION
SPECIFICATION
TECHNIQUE
Renewable energy and hybrid systems for rural electrification –

Part 9-8: Integrated systems – Requirements for stand-alone renewable energy

products with power ratings less than or equal to 350 W

Systèmes à énergie renouvelable et systèmes hybrides destinés à

l'électrification rurale –
Partie 9-8: Systèmes intégrés – Exigences applicables aux produits à énergie

renouvelable autonomes d'une puissance assignée inférieure ou égale à 350 W

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.160 ISBN 978-2-8322-1034-7

– 2 – IEC 62257-9-8:2020 © IEC 2020
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 10
4 Test requirements . 15
4.1 General . 15
4.2 Initial testing requirements . 17
4.2.1 General . 17
4.2.2 Quality test method . 17
4.2.3 Accelerated verification method . 17
4.2.4 Pay-as-you-go targeted testing . 18
4.2.5 Product families . 19
4.2.6 Similar products . 19
4.2.7 Verification of product identicality . 20
4.2.8 Reference to other standards . 20
4.3 Recurring testing requirements . 22
4.4 Retesting of non-conforming products . 22
4.5 General testing requirements applicable to all testing pathways . 23
4.5.1 General . 23
4.5.2 Exception for accessory lights . 23
5 Quality requirements . 24
5.1 General . 24
5.2 Truth in advertising . 26
5.2.1 General . 26
5.2.2 Assessment of run time values . 27
5.2.3 Information and performance reporting requirements . 28
5.2.4 Fee-for service or pay-as-you-go (PAYG) metering requirements . 31
5.2.5 Included appliances requirements . 31
5.2.6 Assessment of ingress protection advertisements . 31
5.3 Ports requirements. 32
5.3.1 General . 32
5.3.2 Voltage converters . 33
5.3.3 Ports with multiple output voltages . 33
5.3.4 Appliance voltage compatibility requirements . 33
5.3.5 Truth-in-advertising requirements . 33
5.3.6 Functionality requirements . 34
5.4 Lumen maintenance . 37
5.5 Health and safety . 37
5.5.1 AC-DC power supply safety . 37
5.5.2 Hazardous substances . 37
5.5.3 Circuit and overload protection . 38
5.5.4 Wiring and connector safety . 38
5.5.5 Additional tests for PV modules . 38
5.5.6 Requirements for systems with large PV modules or arrays . 41
5.6 Battery requirements . 41

IEC 62257-9-8:2020 © IEC 2020 – 3 –
5.6.1 Provision of battery specification sheets . 41
5.6.2 Battery charge control . 41
5.6.3 Specific requirements for lithium-based batteries . 43
5.6.4 Battery durability . 44
5.7 Quality and durability . 44
5.7.1 General . 44
5.7.2 Physical and water ingress protection . 44
5.7.3 Drop test requirements . 47
5.7.4 Soldering and electronics quality . 49
5.7.5 Switch, gooseneck, connector, and moving parts durability . 49
5.7.6 Strain relief durability . 49
5.7.7 Outdoor cable durability (size B products only) . 49
5.7.8 PV overvoltage requirement . 50
5.7.9 Miswiring protection requirement . 51
5.7.10 Requirements specific to systems with non‑plug‑and‑play connections . 51
5.8 Consumer information . 52
5.8.1 Warranty requirements . 52
5.8.2 Date of manufacture . 53
5.8.3 User manual requirements (size B products only) . 53
5.8.4 Component replacement methods (size B products only) . 54
Annex A (normative) Testing of similar products . 55
A.1 General . 55
A.2 Guidelines . 55
A.2.1 Visual screening . 55
A.2.2 Lumen maintenance and light output . 55
A.2.3 Charge controller testing.
...