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IEC TS 62257-9-6
Edition 2.0 2019-09
TECHNICAL
SPECIFICATION
colour
inside
Renewable energy and hybrid systems for rural electrification –
Part 9-6: Integrated systems – Recommendations for selection of Photovoltaic
Individual Electrification Systems (PV-IES)
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IEC TS 62257-9-6
Edition 2.0 2019-09
TECHNICAL
SPECIFICATION
colour
inside
Renewable energy and hybrid systems for rural electrification –
Part 9-6: Integrated systems – Recommendations for selection of Photovoltaic
Individual Electrification Systems (PV-IES)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160; 27.180 ISBN 978-2-8322-7353-1
– 2 – IEC TS 62257-9-6:2019 © IEC 2019
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 . 9
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 . 10
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 . 11
6.1 General . 11
6.2 Service requirements . 12
6.3 Service quality index . 12
6.4 Testing programme . 15
6.4.1 General . 15
6.4.2 Test 1: initial inspection and commissioning . 16
6.4.3 Test 2: ability to provide the required service under daylight favourable
conditions . 17
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 . 22
Annex A (informative) Data record sheet for visual inspection . 24
Annex B (informative) Commissioning records sheet . 25
Annex C (informative) Examples of load profiles for comparative tests . 26
C.1 Examples of loads. 26
C.2 Examples of systems . 26
C.3 Examples of load profiles . 27
Annex D (informative) Instruction and data record sheet models (according to a load
profile as proposed in Annex A) . 28
Bibliography . 35
Figure 1 – Test 2, Phase A: initial charge cycles . 18
Figure 2 – Test 2, Phase B: operating cycles . 19
Figure 3 – Test 3, operating cycles . 21
Table 1 – Climatic conditions (example) . 9
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) . 24
Table B.1 – Commissioning records sheet (example) . 25
Table C.1 – Example of loads . 26
Table C.2– Example of small PV-IES loads (~50 Wp) . 26
Table C.3 – Example of medium PV-IES loads (~200 Wp) . 26
Table C.4 – Example of large PV-IES loads (~500 Wp) . 27
Table C.5 – Example of system load profile to perform test on PV-IES . 27
Table D.1 – Overview instruction sheet for daily records (example) . 28
Table D.2 – Record sheet for lighting service (example) . 30
Table D.3 – Record sheet for radio service (example) . 31
Table D.4 – Record sheet for TV service (example) . 32
Table D.5 – Record sheet for refrigeration service (example) . 33
Table D.6 – System daily quality index of service evaluation (example) . 34
– 4 – IEC TS 62257-9-6:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RENEWABLE ENERGY AND HYBRID SYSTEMS
FOR RURAL ELECTRIFICATION –
Part 9-6: Integrated systems – Recommendations for selection
of Photovoltaic Individual Electrification Systems (PV-IES)
FOREWORD
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