IEC/TS 62257-9-6

Recommendations for small renewable energy and hybrid systems for rural electrification - Part 9-6: Integrated system - Selection of Photovoltaic Individual Electrification Systems (PV-IES)

IEC 62257-9-6:2008(E) proposes a simple selection procedure and cheap, comparative tests which can be performed in laboratories of developing countries, in order to identify the most suitable model of small Photovoltaic Individual Electrification Systems (PV- IES) up to 500 Wp for a particular rural electrification project from a number of products submitted for test. The tests provided in IEC 62257-9-6 allow assessment of the performance of a PV-IES according to the requirement of the general specification of the project (see IEC/TS 62257-2) and to verify their ability to provide the required service.

Priporočila za sisteme malih obnovljivih virov energije in hibridne sisteme za elektrifikacijo podeželja - 9-6. del: Integrirani sistem - Izbira sistema individualne fotonapetostne elektrifikacije (PV-IES)

General Information

• Status: Not Published
• ICS: 27.160 - Solar energy engineering
• ICS: 27.180 - Wind turbine energy systems
• Technical Committee: TC 82 - Solar photovoltaic energy systems
• Current Stage: PPUB - Publication issued
• Start Date: 19-Sep-2008
• Ref Project: SIST-TS IEC/TS 62257-9-6:2009 - Recommendations for small renewable energy and hybrid systems for rural electrification - Part 9-6: Integrated system - Selection of Photovoltaic Individual Electrification Systems (PV-IES)

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2009
3ULSRURþLOD]DVLVWHPHPDOLKREQRYOMLYLKYLURYHQHUJLMHLQKLEULGQHVLVWHPH]D
HOHNWULILNDFLMRSRGHåHOMDGHO,QWHJULUDQLVLVWHP,]ELUDVLVWHPDLQGLYLGXDOQH
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Recommendations for small renewable energy and hybrid systems for rural electrification
- Part 9-6: Integrated system - Selection of Photovoltaic Individual Electrification Systems
(PV-IES)
Ta slovenski standard je istoveten z: IEC/TS 62257-9-6
ICS:
27.160 6RQþQDHQHUJLMD Solar energy engineering
27.190 Biološki viri in drugi Biological sources and
alternativni viri energije alternative sources of energy
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Edition 1.0 2008-09
TECHNICAL
SPECIFICATION
Recommendations for small renewable energy and hybrid systems for rural
electrification –
Part 9-6: Integrated system – Selection of Photovoltaic Individual Electrification
Systems (PV-IES)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
W
ICS 27.160; 27.180 ISBN 2-8318-9997-4
– 2 – TS 62257-9-6 © IEC:2008(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms, definitions and abbreviated terms .8
3.1 Terms and definitions .8
3.2 Abbreviated terms .9
4 System boundaries.9
5 System pre-selection .9
5.1 Services to be provided by the system .9
5.2 Specification of a model .9
5.2.1 General operating conditions .9
5.2.2 Design.10
5.2.3 Components requirements.10
5.2.4 Safety issues.10
5.2.5 Installation rules .10
5.2.6 Operation and maintenance rules .10
5.2.7 Documentation and marking .11
5.3 Pre-selection process.11
5.3.1 Elements of the GS to be provided to potential suppliers .11
5.3.2 Answers to be provided by potential suppliers .11
5.3.3 Pre-selection criteria .11
6 Comparative tests .12
6.1 General .12
6.2 Service requirements .12
6.3 Service quality index .12
6.4 Testing programme .16
6.4.1 General .16
6.4.2 Test 1: initial inspection and commissioning .17
6.4.3 Test 2: ability to provide the required service under daylight
favourable conditions.18
6.4.4 Test 3: ability to provide the required service under daylight
unfavourable conditions.20
6.4.5 Test 4: final inspection.22
6.4.6 General conclusion.23
Annex A (informative) Data record sheet for visual inspection.25
Annex B (informative) Commissioning records sheet.26
Annex C (informative) Examples of load profiles for comparative tests.28
Annex D (informative) Instruction and data record sheet models (according to a load
profile as proposed in Annex A) .30
Bibliography.36

Figure 1 – Test 2, Phase A: initial charge cycles.19
Figure 2 – Test 2, Phase B: operating cycles .20
Figure 3 – Test 3, operating cycles .22

TS 62257-9-6 © IEC:2008(E) – 3 –
Table 1 – Climatic conditions (example).10
Table 2 – Suggested minimum values for IP and IK .10
Table 3 – Lighting service indexes .13
Table 4 – Radio / TV service indexes.14
Table 5 – Refrigeration service indexes .14
Table 6 – Testing programme .16
Table A.1 – Data record sheet for visual inspection (example) .25
Table B.1 – Commissioning records sheet (example).26
Table C.1 – Example of loads .28
Table C.2 – Example of small PV-IES loads (~50 Wp) .28
Table C.3 – Example of medium PV-IES loads (~200 Wp) .28
Table C.4 – Example of large PV-IES loads (~500 Wp).29
Table C.5 – Example of system load profile to perform test on PV-IES.29
Table D.1 – Overview instruction sheet for daily records (example) .30
Table D.2 – Record sheet for lighting service (example) .31
Table D.3 – Record sheet for radio service (example).32
Table D.4 – Record sheet for TV service (example) .33
Table D.5 – Record sheet for refrigeration service (example).34
Table D.6 – System daily quality index of service evaluation (example) .35

– 4 – TS 62257-9-6 © IEC:2008(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY
AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION –

Part 9-6: Integrated system –
Selection of Photovoltaic Individual
Electrification Systems (PV-IES)

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
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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, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC 62257-9-6, which is a technical specification, has been prepared by IEC technical
committee 82: Solar photovoltaic energy systems.

TS 62257-9-6 © IEC:2008(E) – 5 –
This document is based on IEC/PAS 62111 (1999); it cancels and replaces the relevant parts
of IEC/PAS 62111.
This part of IEC 62257 is to be used in conjunction with the IEC 62257 series.
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
82/510/DTS 82/532/RVC
Full information on the voting for the approval of this technical specification can be found in
the report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 62257 series, under the general title: Recommendations for small
renewable energy and hybrid systems for rural electrification, can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• transformed into an International standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

– 6 – TS 62257-9-6 © IEC:2008(E)
INTRODUCTION
The IEC 62257 series of documents intends to provide to different players involved in rural
electrification projects (such as project implementers, project contractors, project supervisors,
installers, etc.) documents for the setting up of renewable energy and h
...