IEC/TS 62257-9-5

SLOVENSKI STANDARD
01-november-2008
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Recommendations for small renewable energy and hybrid systems for rural electrification
- Part 9-5: Integrated system - Selection of portable PV lanterns for rural electrification
projects
Ta slovenski standard je istoveten z: IEC/TS 62257-9-5
ICS:
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.

TECHNICAL IEC
SPECIFICATION TS 62257-9-5
First edition
2007-06
Recommendations for small renewable energy
and hybrid systems for rural electrification –
Part 9-5:
Integrated system –
Selection of portable PV lanterns
for rural electrification projects
PRICE CODE
Commission Electrotechnique Internationale V

International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – TS 62257-9-5 © IEC:2007(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references .7
3 Terms and definitions .7
4 System limits .9
5 Model pre-selection .10
5.1 Specification of a model .10
5.1.1 Service to be provided.10
5.1.2 Technical requirements .10
5.1.3 Operating conditions.10
5.2 Pre-selection process.11
5.2.1 Elements of the GS to be provided to potential suppliers .11
5.2.2 Answers to be provided by potential suppliers .11
5.3 Pre-selection criteria .11
6 Comparative tests .12
6.1 General .12
6.2 Performance requirements .12
6.3 Testing programme .12
6.3.1 Test equipment.14
6.3.2 Test 1: Visual inspection.14
6.3.3 Test 2: Ability to provide “on one shot” the required lighting service .16
6.3.4 Test 3: Ability to provide the lighting service every day.17
6.3.5 Test 4: Ability to provide the lighting service every day for a long
period.18
6.3.6 Test 5: Storability test.19
6.4 Tests sequences operating procedures .20
6.4.1 Sequence A (3 days) .20
6.4.2 Sequence B (6 days) .21
6.4.3 Sequence C (1 month).21
6.4.4 Sequence D (3 months) .22
7 Installation.23
8 Operation and maintenance.23
8.1 Operating conditions .23
8.2 First operation .23
8.3 Maintenance.23

Annex A (normative) Device for illuminance measurement .
Annex B (informative) Data record sheet for visual inspection.25
Annex C (normative) Sequence A data record sheet for illuminance tests 2 and 4 .26
Annex D (normative) Sequence B data record sheet for illuminance test 3.27
Annex E (informative) Sequence C data record sheet for illuminance test 4 .28
Annex F (informative) Sequence D data record sheet for storability test 5.29
Annex G (informative) Proposed test organization (3 models at the same time) .30

TS 62257-9-5 © IEC:2007(E) – 3 –

Figure 1 – Testing programme .14
Figure 2 – Test 4 sequences.18
Figure A.1 – Outlines for an illuminance testing device for PV lanterns .24
Figure G.1 – Initial measure sequence.30
Figure G.2 – Final measure sequence.31

Table 1 – Suggested minimum values for IP and IK .10
Table 2 – Climatic conditions (example).11
Table 3 – Testing programme .13
Table 4 – Storability test options.14
Table 5 – Sequence A operating procedure .20
Table 6 – equence B operating procedure.21
Table 7 – Sequence C operating procedure .22
Table 8 – Sequence D operating procedure .22

– 4 – TS 62257-9-5 © IEC:2007(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY AND
HYBRID SYSTEMS FOR RURAL ELECTRIFICATION –

Part 9-5: Integrated system –
Selection of portable PV lanterns for rural electrification projects

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 subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
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
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
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.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 62257-9-5, which is a technical specification, has been prepared by IEC technical
committee 82: Solar photovoltaic energy systems.

TS 62257-9-5 © IEC:2007(E) – 5 –
This part of IEC 62257 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
82/462A/DTS 82/477/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 the 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 62257-9-5 © IEC:2007(E)
INTRODUCTION
The IEC 62257 series 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 hybrid systems with a.c. nominal
voltage below 500 V, d.c. nominal voltage below 750 V and nominal power below 100 kVA.
These documents are recommendations:
• to choose the right system for the right place,
• to design the system,
• to operate and maintain the system.
These documents are focused only on rural electrification concentrating on but not specific to
developing countries. They must not be considered as all inclusive to rural electrification. The
documents try to promote the use of renewable energies in rural electrification; they do not
deal with clean mechanisms developments at this time (CO emission, carbon credit, etc.).
Further developments in this field could be introduced in future steps.
This consistent set of documents i
...