IEC TS 62257-9-5:2024
(Main)Renewable energy off-grid systems – Part 9-5: Integrated systems – Laboratory evaluation of stand-alone renewable energy products for rural electrification
Renewable energy off-grid systems – Part 9-5: Integrated systems – Laboratory evaluation of stand-alone renewable energy products for rural electrification
IEC TS 62257-9-5:2024 provides support and strategies for institutions involved in rural electrification projects. It documents technical approaches for designing, building, testing, and maintaining off-grid renewable energy and hybrid systems with AC nominal voltage below 500 V, DC nominal voltage below 750 V and nominal power below 100 kVA.
The purpose of this document is to specify laboratory test methods for evaluating the quality assurance of stand-alone renewable energy products. This document is specifically related to renewable energy products that are packaged and made available to end-use consumers at the point of purchase as single, stand-alone products that do not require additional system components to function.
This document establishes the framework for creating a product specification, the basis for evaluating quality for a particular context. Product specifications include minimum requirements for quality standards and warranty requirements.
This document applies to stand-alone renewable energy products having the following characteristics: This document was written primarily for off-grid renewable energy products with batteries and PV modules with DC system voltages not exceeding 35 V and peak power ratings not exceeding 350 W. This document includes provisions related to safety; however, it is not intended to be a comprehensive safety standard. In particular, this document is not intended to be used as an alternative to safety standards such as IEC 62368-1 or IEC 60335 (all parts) for appliances such as radios and televisions that are included with stand-alone renewable energy products
General Information
- Status
- Published
- Publication Date
- 10-Dec-2024
- Technical Committee
- TC 82 - Solar photovoltaic energy systems
- Drafting Committee
- JWG 1 - TC 82/JWG 1
- Current Stage
- PPUB - Publication issued
- Start Date
- 11-Dec-2024
- Completion Date
- 22-Nov-2024
Relations
- Effective Date
- 05-Sep-2023
Overview
IEC TS 62257-9-5:2024 is an IEC Technical Specification for renewable energy off-grid systems focused on the laboratory evaluation of stand‑alone renewable energy products for rural electrification. It provides a practical framework to design product specifications and laboratory test methods to assure quality of packaged, single-unit off‑grid products (batteries + PV modules and related components). The TS applies to off‑grid systems with AC nominal voltage < 500 V, DC nominal voltage < 750 V and nominal power < 100 kVA, and is written primarily for products with DC system voltages ≤ 35 V and peak PV power ≤ 350 W.
Key topics and technical requirements
- Product specification framework: Defines how to create minimum quality, durability and warranty requirements tailored to a rural electrification context.
- Laboratory test methods: Establishes sampling, laboratory capabilities and test procedures for quality assurance, including recommended test programmes (Batch A/B/C), report contents and failure handling.
- Performance and durability checks: Covers battery performance, PV module characteristics, electrical and lighting performance, and workmanship/durability observations.
- Special test annexes: Normative annexes include PV module wiring inspection, partial shading tests, bending/folding tests, visual screening, and product sampling procedures.
- Market and verification methods: Includes procedures for market checks, initial screening, accelerated verification and Pay‑As‑You‑Go (PAYG) specific testing.
- Safety considerations: Provides provisions related to safety but is not a substitute for comprehensive appliance safety standards (see Related Standards).
Practical applications and users
Who uses IEC TS 62257-9-5:2024:
- Test laboratories performing conformity and pre‑market testing of stand‑alone solar home systems and single‑unit devices.
- Manufacturers and OEMs developing PV+battery packaged products for rural markets to define specs and quality targets.
- Procurement agencies, NGOs and rural electrification programmes selecting verified products for field deployment and subsidy programs.
- Certification bodies and third‑party verifiers implementing market surveillance, renewal testing and accelerated verification.
- PAYG service providers integrating product testing into financing and lock‑in strategies.
Practical uses:
- Developing supplier contracts and warranty terms based on standardized test outcomes.
- Conducting market sampling and quality surveillance to reduce low‑quality product influx into rural markets.
- Verifying product resilience to shading, mechanical stress and real‑world battery cycling.
Related standards
- IEC TS 62257 series (general off‑grid guidance)
- IEC 62368‑1 and IEC 60335 series (appliance safety standards) - not replaced by this TS for appliance safety compliance.
Keywords: IEC TS 62257-9-5:2024, renewable energy off-grid systems, stand-alone renewable energy products, laboratory evaluation, rural electrification, PV modules, batteries, quality assurance, product specification, market verification.
IEC TS 62257-9-5:2024 - Renewable energy off-grid systems – Part 9-5: Integrated systems – Laboratory evaluation of stand-alone renewable energy products for rural electrification Released:11. 12. 2024 Isbn:9782832299807
Frequently Asked Questions
IEC TS 62257-9-5:2024 is a technical specification published by the International Electrotechnical Commission (IEC). Its full title is "Renewable energy off-grid systems – Part 9-5: Integrated systems – Laboratory evaluation of stand-alone renewable energy products for rural electrification". This standard covers: IEC TS 62257-9-5:2024 provides support and strategies for institutions involved in rural electrification projects. It documents technical approaches for designing, building, testing, and maintaining off-grid renewable energy and hybrid systems with AC nominal voltage below 500 V, DC nominal voltage below 750 V and nominal power below 100 kVA. The purpose of this document is to specify laboratory test methods for evaluating the quality assurance of stand-alone renewable energy products. This document is specifically related to renewable energy products that are packaged and made available to end-use consumers at the point of purchase as single, stand-alone products that do not require additional system components to function. This document establishes the framework for creating a product specification, the basis for evaluating quality for a particular context. Product specifications include minimum requirements for quality standards and warranty requirements. This document applies to stand-alone renewable energy products having the following characteristics: This document was written primarily for off-grid renewable energy products with batteries and PV modules with DC system voltages not exceeding 35 V and peak power ratings not exceeding 350 W. This document includes provisions related to safety; however, it is not intended to be a comprehensive safety standard. In particular, this document is not intended to be used as an alternative to safety standards such as IEC 62368-1 or IEC 60335 (all parts) for appliances such as radios and televisions that are included with stand-alone renewable energy products
IEC TS 62257-9-5:2024 provides support and strategies for institutions involved in rural electrification projects. It documents technical approaches for designing, building, testing, and maintaining off-grid renewable energy and hybrid systems with AC nominal voltage below 500 V, DC nominal voltage below 750 V and nominal power below 100 kVA. The purpose of this document is to specify laboratory test methods for evaluating the quality assurance of stand-alone renewable energy products. This document is specifically related to renewable energy products that are packaged and made available to end-use consumers at the point of purchase as single, stand-alone products that do not require additional system components to function. This document establishes the framework for creating a product specification, the basis for evaluating quality for a particular context. Product specifications include minimum requirements for quality standards and warranty requirements. This document applies to stand-alone renewable energy products having the following characteristics: This document was written primarily for off-grid renewable energy products with batteries and PV modules with DC system voltages not exceeding 35 V and peak power ratings not exceeding 350 W. This document includes provisions related to safety; however, it is not intended to be a comprehensive safety standard. In particular, this document is not intended to be used as an alternative to safety standards such as IEC 62368-1 or IEC 60335 (all parts) for appliances such as radios and televisions that are included with stand-alone renewable energy products
IEC TS 62257-9-5:2024 is classified under the following ICS (International Classification for Standards) categories: 27.160 - Solar energy engineering. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC TS 62257-9-5:2024 has the following relationships with other standards: It is inter standard links to IEC TS 62257-9-5:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase IEC TS 62257-9-5:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.
Standards Content (Sample)
IEC TS 62257-9-5 ®
Edition 5.0 2024-12
TECHNICAL
SPECIFICATION
Renewable energy off-grid systems –
Part 9-5: Integrated systems – Laboratory evaluation of stand-alone renewable
energy products for rural electrification
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IEC TS 62257-9-5 ®
Edition 5.0 2024-12
TECHNICAL
SPECIFICATION
Renewable energy off-grid systems –
Part 9-5: Integrated systems – Laboratory evaluation of stand-alone renewable
energy products for rural electrification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.160 ISBN 978-2-8322-9980-7
– 2 – IEC TS 62257-9-5:2024 IEC 2024
CONTENTS
FOREWORD . 15
INTRODUCTION . 17
1 Scope . 18
2 Normative references . 19
3 Terms and definitions . 20
4 Product components and characteristics . 26
4.1 Components . 26
4.1.1 Overview . 26
4.1.2 Component categories . 26
4.1.3 Lighting parts definitions . 29
4.1.4 Appliance definitions . 30
4.1.5 Additional system elements . 30
4.2 System measurements and observations . 31
4.2.1 General . 31
4.2.2 Product design, manufacture, and marketing aspects . 31
4.2.3 Product durability and workmanship aspects . 34
4.2.4 Lighting durability aspects . 37
4.2.5 Battery performance aspects . 38
4.2.6 PV module aspects . 39
4.2.7 Electrical characteristics . 40
4.2.8 Performance aspects . 42
4.2.9 Light output aspects . 44
4.2.10 Self-certification aspects . 45
4.3 Constructions not specifically covered . 45
5 Product specification . 46
5.1 General . 46
5.2 Applications . 46
5.3 Quality assurance principles . 47
6 Quality test method. 47
6.1 General . 47
6.2 Applications . 47
6.3 Sampling requirements . 48
6.3.1 General . 48
6.3.2 Consumer-facing product documentation . 48
6.3.3 Exceptions . 49
6.4 Laboratory requirements . 49
6.5 Testing requirements . 50
6.6 Recommended tests programme . 58
6.6.1 General . 58
6.6.2 Test preparation . 61
6.6.3 Batch A tests . 61
6.6.4 Batch B tests . 61
6.6.5 Batch C – potentially destructive tests . 62
6.6.6 Report preparation . 62
6.6.7 Failures during testing . 62
6.7 Reporting . 63
7 Renewal test method . 63
8 Market check method . 64
8.1 General . 64
8.2 Applications . 64
8.3 Sampling requirements . 64
8.4 Laboratory requirements . 65
8.5 Testing requirements . 65
8.6 Recommended tests programme . 65
8.7 Report requirements . 65
9 Initial screening method . 65
9.1 General . 65
9.2 Applications . 66
9.3 Sampling requirements . 66
9.4 Laboratory requirements . 67
9.5 Testing requirements . 67
9.6 Recommended tests programme . 67
9.7 Reporting . 67
10 Accelerated verification method . 68
10.1 General . 68
10.2 Applications . 68
10.3 Sampling requirements . 69
10.3.1 General . 69
10.3.2 Verification entry testing . 69
10.3.3 Follow-up testing . 69
10.4 Laboratory requirements . 69
10.5 Testing requirements . 69
10.5.1 General . 69
10.5.2 Verification entry testing . 70
10.5.3 Follow-up testing . 70
10.6 Recommended tests programme . 70
10.7 Report requirements . 70
11 Pay-as-you-go (PAYG) method . 71
11.1 General . 71
11.2 Applications . 71
11.3 Sampling requirements . 71
11.4 Laboratory requirements . 72
11.5 Testing requirements . 72
11.6 Recommended tests programme . 73
11.7 Reporting . 73
Annex A (normative) Photovoltaic module wiring inspection . 74
A.1 General . 74
A.2 Equipment requirements . 74
A.3 Procedure . 74
A.3.1 General . 74
A.3.2 Direct dimensional measurement . 75
A.3.3 Resistance measurement . 75
A.3.4 Determination of current-carrying capacity . 77
A.4 Pass criteria . 78
– 4 – IEC TS 62257-9-5:2024 IEC 2024
A.5 Reporting . 78
Annex B (normative) Partial shading test for photovoltaic modules . 80
B.1 General . 80
B.2 Equipment requirements . 80
B.3 Test prerequisites . 80
B.4 Procedure . 81
B.5 Calculations . 83
B.6 Pass criteria . 83
B.7 Reporting . 83
Annex C (normative) Bending or folding test for photovoltaic modules . 85
C.1 General . 85
C.2 Equipment requirements . 85
C.3 Test prerequisites . 85
C.4 Required test conditions . 85
C.5 Procedure . 85
C.6 Pass criteria . 86
C.7 Reporting . 86
Annex D (normative) Company self-reported information . 87
D.1 Background. 87
D.2 Outcomes . 87
D.3 Solicited information . 87
D.3.1 General . 87
D.3.2 Confidential information (not released publicly) . 87
D.3.3 Public information (may be released publicly) . 89
D.4 Reporting . 90
Annex E (normative) Product sampling . 91
E.1 Background. 91
E.2 Test outcomes . 91
E.3 Related tests. 91
E.4 Procedure . 91
E.4.1 Retail sampling . 91
E.4.2 Warehouse sampling . 92
E.5 Reporting . 93
Annex F (normative) Visual screening . 95
F.1 Background. 95
F.2 Test outcomes . 95
F.3 Related tests. 95
F.4 Procedure . 96
F.4.1 Properties, features, and information . 96
F.4.2 Specifications . 99
F.4.3 Functionality and quality inspection . 101
F.5 Reporting . 106
Annex G (normative) Sample preparation . 107
G.1 Background. 107
G.2 Test outcomes . 107
G.3 Related tests. 107
G.4 Procedure . 107
G.4.1 General . 107
G.4.2 Equipment requirements . 107
G.4.3 Test prerequisites . 108
G.4.4 Procedure . 108
G.4.5 Calculations . 111
G.5 Reporting . 111
Annex H (normative) Power supply setup procedure . 112
H.1 Background. 112
H.2 Test outcomes . 112
H.3 Related tests. 112
H.4 Equipment requirements . 112
H.5 Setup procedure for photometric measurements and lumen maintenance
tests . 113
H.5.1 Test setup . 113
H.5.2 DC voltage levels. 114
H.5.3 Stabilization period . 115
H.5.4 4-wire power supply measurements . 116
H.5.5 Filtering electronic noise . 116
H.5.6 Troubleshooting . 117
H.6 Reporting . 119
Annex I (normative) Light output test . 120
I.1 Background. 120
I.2 Test outcomes . 120
I.3 Related tests. 120
I.4 Luminous flux measurement techniques . 121
I.4.1 General . 121
I.4.2 Calculation for lighting appliances tested in accordance with
IEC TS 62257-12-1 . 122
I.4.3 Luminous flux measurements with an integrating sphere or
goniophotometer . 122
I.4.4 Luminous flux measurements using the multi-plane method . 122
I.5 Correlated colour temperature (CCT) measurement . 126
I.6 Colour rendering index (CRI) measurement . 126
I.7 Calculation of luminous efficacy . 126
I.8 Reporting . 127
Annex J (normative) Lumen maintenance test . 128
J.1 Background. 128
J.2 Test outcomes . 128
J.3 Related tests. 129
J.4 Procedure . 129
J.4.1 General . 129
J.4.2 Equipment requirements . 131
J.4.3 Test prerequisites . 131
J.4.4 Test methods . 131
J.5 Calculations . 132
J.6 Alternate method for testing lumen maintenance using ANSI/IES LM-80 . 132
J.6.1 Background . 132
J.6.2 Equipment requirements . 133
J.6.3 Test prerequisites . 133
J.6.4 Procedure . 134
– 6 – IEC TS 62257-9-5:2024 IEC 2024
J.6.5 DUT preparation and LED thermocouple attachment guidelines . 134
J.6.6 Calculations . 134
J.7 Reporting . 135
Annex K (normative) Battery test . 137
K.1 Background. 137
K.2 Test outcomes . 137
K.3 Related tests. 137
K.4 Procedure . 137
K.4.1 General . 137
K.4.2 Lead-acid battery test . 138
K.4.3 Nickel-metal hydride battery test . 141
K.4.4 Lithium-ion battery test . 142
K.4.5 Lithium iron phosphate battery test . 143
K.5 Reporting . 144
Annex L (informative) Battery testing recommended practices . 145
L.1 Background. 145
L.2 Deep discharge protection specifications by battery type . 145
L.3 Overcharge protection specifications by battery type . 146
Annex M (normative) Full-battery run time test . 147
M.1 Background. 147
M.2 Test outcomes . 148
M.3 Related tests. 148
M.4 Equipment requirements . 149
M.5 Test prerequisites . 149
M.6 Apparatus . 150
M.7 Definition of full-battery run time endpoint . 150
M.8 Procedure . 151
M.9 Calculations . 154
M.10 Reporting . 158
Annex N (normative) Full discharge procedure . 160
N.1 Background. 160
N.2 Test outcomes . 160
N.3 Related tests. 160
N.4 Procedure . 160
N.4.1 General . 160
N.4.2 Equipment requirements . 160
N.4.3 Test prerequisites . 161
N.4.4 Procedure . 161
N.4.5 Calculations . 162
N.5 Reporting . 162
Annex O (normative) Grid charge test . 163
O.1 Background. 163
O.2 Test outcomes . 163
O.3 Related tests. 163
O.4 Procedure . 163
O.4.1 General . 163
O.4.2 Equipment requirements . 163
O.4.3 Test prerequisites . 164
O.4.4 Apparatus . 164
O.4.5 Procedure . 164
O.4.6 Calculations . 164
O.5 Reporting . 165
Annex P (normative) Electromechanical charge test. 166
P.1 Background. 166
P.2 Test outcomes . 166
P.3 Related tests. 166
P.4 Procedure . 166
P.4.1 General . 166
P.4.2 Equipment requirements . 166
P.4.3 Test prerequisites . 167
P.4.4 Apparatus . 167
P.4.5 Procedure . 167
P.4.6 Calculations . 167
P.4.7 Modifications for atypical products . 167
P.5 Reporting . 168
Annex Q (normative) Photovoltaic module I-V characteristics test . 169
Q.1 Background. 169
Q.2 Test outcomes . 169
Q.3 Related tests. 170
Q.4 Procedure . 170
Q.4.1 Test programme using a solar simulator . 170
Q.4.2 Outdoor photovoltaic module I-V characteristics test . 174
Q.4.3 Arrays of PV modules . 178
Q.5 Reporting . 179
Annex R (normative) Solar charge test . 181
R.1 Background. 181
R.2 Test outcomes . 181
R.3 Related tests. 181
R.4 Procedure . 182
R.4.1 General . 182
R.4.2 Test method using a resistor network . 182
R.4.3 Test method using a solar array simulator (SAS) . 190
R.4.4 Calculations . 192
R.4.5 Alternative method to measure battery-charging circuit efficiency . 200
R.4.6 Maximum solar operation efficiency measurement . 201
R.5 Reporting . 204
Annex S (normative) Charge controller behaviour test . 207
S.1 Background. 207
S.2 Test outcomes . 207
S.3 Related tests. 208
S.4 Procedure . 208
S.4.1 Active deep discharge protection test . 208
S.4.2 Active overcharge protection test . 211
S.4.3 Passive deep discharge protection test . 216
S.4.4 Passive overcharge protection test . 218
S.4.5 Standby loss measurement . 220
– 8 – IEC TS 62257-9-5:2024 IEC 2024
S.5 Reporting . 221
Annex T (normative) Light distribution test (optional) . 222
T.1 Background. 222
T.2 Test outcomes . 222
T.3 Related tests. 223
T.4 Substitution of results from IEC TS 62257-12-1 . 223
T.5 Approved test methods . 223
T.5.1 General . 223
T.5.2 Goniophotometer . 226
T.5.3 Multi-plane method . 226
T.5.4 Illuminance on a plane method . 231
T.5.5 Turntable method . 234
T.5.6 Illuminance on a desktop method . 236
T.6 Reporting . 238
Annex U (normative) Physical and water ingress protection test . 242
U.1 Background. 242
U.2 Test outcomes . 242
U.3 Related tests. 243
U.4 Procedure . 243
U.4.1 General . 243
U.4.2 IP testing at a laboratory that has been accredited to test in accordance
with IEC 60529 or IEC 60598-1 . 243
U.4.3 Simplified IP inspection for ingress of solid foreign objects . 244
U.4.4 Simplified IP preliminary inspection for ingress of water with harmful
effects . 246
U.5 Reporting . 249
Annex V (normative) Level of water protection . 250
V.1 Background. 250
V.2 Test outcomes . 250
V.3 Related tests. 251
V.4 Laboratory requirements . 251
V.5 Procedure . 251
V.5.1 General . 251
V.5.2 Level of water protection for enclosure only . 252
V.5.3 Level of water protection from technical aspects . 252
V.5.4 Overall level of water protection. 257
V.6 Reporting . 258
Annex W (normative) Mechanical durability test . 260
W.1 Background. 260
W.2 Test outcomes . 260
W.3 Related tests. 261
W.4 Defect categories . 261
W.4.1 General . 261
W.4.2 Major defects . 261
W.4.3 Minor defects . 261
W.5 Procedures . 261
W.5.1 Drop test . 261
W.5.2 Switch and connector test . 263
W.5.3 Gooseneck and moving part test . 265
W.5.4 Strain relief test . 266
W.6 Reporting . 267
Annex X (normative) Screw connections test . 269
X.1 General . 269
X.2 Equipment requirement
...
IEC TS 62257-9-5:2024は、農村電化プロジェクトに関与する機関に対して支援と戦略を提供する重要な文書です。この標準は、交流電圧500 V未満、直流電圧750 V未満、及び名目電力100 kVA未満のオフグリッド再生可能エネルギーおよびハイブリッドシステムの設計、構築、テスト、及び維持のための技術的アプローチを文書化しています。 この文書の目的は、独立型再生可能エネルギー製品の品質保証を評価するためのラボテスト手法を指定することです。特に、購入時に消費者に単一のスタンドアロン製品として提供され、追加のシステムコンポーネントを必要としない再生可能エネルギー製品に関連しています。また、製品仕様を作成するためのフレームワークを確立し、特定の文脈での評価基準となる基盤を提供します。 この文書は、特にバッテリーおよびPVモジュールを備えたオフグリッド再生可能エネルギー製品に焦点を当てており、直流システム電圧が35 Vを超えず、ピーク出力が350 Wを超えない製品に適用されます。安全に関する規定も含まれていますが、包括的な安全標準として使用されることは意図されていません。特に、スタンドアロン再生可能エネルギー製品に含まれるラジオやテレビなどの機器に関して、IEC 62368-1やIEC 60335（全パート）などの安全基準の代替として利用されることは考慮されていません。 この標準の強みは、農村地域における再生可能エネルギー製品の導入を支援し、質の高い製品を評価するための具体的な指針を提供する点にあります。発展途上国におけるエネルギーアクセスの向上を目指し、再生可能エネルギー技術の普及が期待されている中で、その重要性は高まっています。
La norme IEC TS 62257-9-5:2024 est un document fondamental qui vise à soutenir les projets d'électrification rurale à travers des systèmes d'énergie renouvelable autonomes. Son champ d'application est clairement défini, se concentrant sur l'évaluation des produits d'énergie renouvelable autonomes qui peuvent être commercialisés directement au consommateur final. Cela renforce leur pertinence dans les zones où l'accès à l'électricité est limité ou inexistant. Les forces de cette norme résident dans ses méthodes d'évaluation rigoureuses, qui garantissent que les produits proposés respectent des critères de qualité élevés. En fournissant un cadre pour l'élaboration de spécifications de produits, IEC TS 62257-9-5:2024 joue un rôle crucial en établissant des exigences minimales en matière de normes de qualité et de garantie. L'inclusion de tests de laboratoire permet d'assurer une validation technique des systèmes, renforçant ainsi la fiabilité et la sécurité des solutions d'énergie renouvelable. De plus, la norme se concentre sur des caractéristiques spécifiques des produits, tels que ceux utilisant des batteries et des modules photovoltaïques avec des tensions de système DC ne dépassant pas 35 V et des puissances de crête ne dépassant pas 350 W. Ce niveau de détail garantit que les évaluations de performance soient non seulement pertinentes, mais également adaptées aux réalités des utilisateurs finaux dans des contextes ruraux. Il est également important de noter que, bien que cette norme comporte des dispositions relatives à la sécurité, elle n'est pas destinée à remplacer les normes de sécurité telles que IEC 62368-1 ou IEC 60335. Cela souligne l'importance d'une compréhension complète des exigences de sécurité dans le développement et la commercialisation de systèmes d'énergie renouvelable. En somme, la norme IEC TS 62257-9-5:2024 est essentielle pour les institutions s'impliquant dans l'électrification rurale, car elle offre des lignes directrices claires pour la conception, l'évaluation et la mise en marché de produits d'énergie renouvelable autonomes, tout en garantissant des standards de qualité et de sécurité appropriés.
The IEC TS 62257-9-5:2024 standard offers significant advancements in the field of renewable energy off-grid systems, specifically targeting integrated systems for rural electrification. Its scope effectively supports institutions engaged in rural electrification projects, laying out comprehensive strategies for designing, building, testing, and maintaining off-grid renewable energy and hybrid systems. This standard addresses systems operating at AC nominal voltages below 500 V, DC nominal voltages below 750 V, and nominal power under 100 kVA, making it versatile and relevant to various applications within the renewable energy sector. One of the strengths of this document lies in its provision of laboratory test methods designed to ensure quality assurance for stand-alone renewable energy products. By focusing on products that are delivered to consumers without the need for additional system components, the standard provides clarity and specificity, which is crucial for both manufacturers and consumers. The emphasis on product specification establishes a robust framework for evaluating quality, incorporating essential minimum requirements and warranty conditions that deliver a level of assurance for end-users. Moreover, the standard's applicability to off-grid renewable energy products such as batteries and PV modules with specific limits on DC system voltages (not exceeding 35 V) and peak power ratings (not exceeding 350 W) enhances its relevance in practical scenarios. The inclusion of safety provisions, while acknowledging that this document is not intended to serve as a comprehensive safety standard, adds an additional layer of reliability for products entering the market. By delineating expectations surrounding safety as it relates to standalone products, IEC TS 62257-9-5:2024 indirectly encourages adherence to other established safety standards, thus fostering a culture of safety within the renewable energy sector. In summary, IEC TS 62257-9-5:2024 stands out as a critical document within the realm of renewable energy off-grid systems, offering a practical and essential framework for the laboratory evaluation of stand-alone renewable energy products. Its well-defined scope, strengths in product quality evaluation, and focus on applicable safety measures reinforce its significance and necessity in promoting effective and reliable rural electrification solutions.
IEC TS 62257-9-5:2024 표준은 농촌 전력화를 위한 독립형 재생 가능 에너지 제품에 대한 실험실 평가 방법을 제시하고 있으며, 이를 통해 해당 제품의 품질 보증을 평가할 수 있는 체계적인 프레임워크를 제공합니다. 이 표준은 500V 이하의 AC 표준 전압, 750V 이하의 DC 표준 전압 및 100kVA 이하의 명목 출력을 갖춘 오프그리드 재생 가능 에너지 및 하이브리드 시스템의 설계, 구축, 테스트 및 유지보수에 대한 기술적 접근 방식을 문서화하고 있습니다. 이 문서의 주요 강점은 독립형 재생 에너지 제품의 품질을 평가하기 위한 실험실 시험 방법을 구체적으로 규정함으로써 농촌 전력화 프로젝트에 참여하는 기관들이 보다 체계적이고 신뢰할 수 있는 제품을 제공할 수 있도록 지원하는 것입니다. 특히, 이 표준은 소비자에게 최종 사용 가능한 형태로 제공되는 포장된 재생 가능 에너지 제품에 집중하고 있으며, 추가 시스템 구성 요소 없이 작동할 수 있는 제품을 대상으로 하고 있습니다. IEC TS 62257-9-5:2024 표준은 또한 제품 사양을 생성하기 위한 기반을 제공하며, 특정 맥락에서의 품질 평가를 위한 기준을 마련합니다. 제품 사양은 품질 기준 및 보증 요구 사항에 대한 최소 요건을 포함하고 있습니다. 특히, 이 문서는 DC 시스템 전압이 35V를 초과하지 않고, 피크 출력이 350W를 초과하지 않는 배터리 및 PV 모듈이 포함된 오프그리드 재생 가능 에너지 제품을 주적으로 다룹니다. 안전 관련 조항도 포함되어 있으나, 이 문서는 종합적인 안전 표준으로 간주되지 않으며, 독립형 재생 가능 에너지 제품과 함께 제공되는 라디오 및 텔레비전과 같은 전자기기를 위한 IEC 62368-1 또는 IEC 60335 (모든 부분)과 같은 안전 기준을 대체하기 위한 것이 아닙니다. 결론적으로, IEC TS 62257-9-5:2024 표준은 농촌 전력화를 위한 재생 가능 에너지 제품의 품질 보증 및 평가를 위한 실질적인 지침으로, 이 분야의 발전에 기여할 수 있는 중요한 문서입니다. 이 표준은 사용자들에게 신뢰할 수 있는 제품을 보장하고, 기술적 일관성을 유지하는 데 필수적인 역할을 하고 있습니다.
Die Norm IEC TS 62257-9-5:2024 bietet einen fundamentalen Rahmen für die Evaluierung von unabhängig operierenden, erneuerbaren Energiesystemen, die speziell für Projekte zur ländlichen Elektrifizierung entwickelt wurden. Ihr Geltungsbereich beschränkt sich auf die technischen Ansätze, die für das Design, den Bau, die Prüfung und die Wartung von netzunabhängigen erneuerbaren Energie- und hybriden Systemen mit einer AC-Nennspannung unter 500 V, einer DC-Nennspannung unter 750 V und einer Nennleistung unter 100 kVA relevant sind. Ein herausragendes Merkmal dieser Norm ist die klare Fokussierung auf die Qualitätssicherung stand-alone erneuerbarer Energieprodukte. Die Norm dokumentiert spezifische Laborprüfmethoden, die es Institutionen ermöglichen, die Qualität und Zuverlässigkeit von Produkten zu evaluieren, die direkt an Endverbraucher verkauft werden, ohne dass zusätzliche Systemkomponenten erforderlich sind. Dies ist besonders wichtig für die Anwendung in strukturschwachen Regionen, wo solche energetischen Lösungen oft der Schlüssel zu nachhaltiger Entwicklung sind. Die Norm definiert klare Anforderungen an Produktspezifikationen, die nicht nur Mindeststandards für die Produktqualität festlegen, sondern auch Garantievorgaben beinhalten. Diese Spezifikationen sind von essenzieller Bedeutung, um sicherzustellen, dass die angebotenen Produkte den speziellen Bedingungen des jeweiligen Einsatzkontextes gerecht werden. Zusätzlich berücksichtigt die Norm sicherheitsrelevante Aspekte, auch wenn sie nicht als umfassende Sicherheitsnorm konzipiert ist. Dies unterstreicht die Relevanz der IEC TS 62257-9-5:2024 für Hersteller und Anbieter von ländlichen Elektrifizierungsprojekten, da sie eine solide Grundlage für die Entwicklung von Produkten bietet, die sowohl funktional als auch sicher sind. Die Zielgruppe dieser Norm umfasst insbesondere Entwickler und Betreiber von netzunabhängigen erneuerbaren Energieprodukten, wie beispielsweise Solarmodule und Batteriesysteme mit DC-Systemspannungen, die 35 V nicht überschreiten. Ihre praxisorientierte und kontextnahe Ausrichtung macht diese Norm zu einem unverzichtbaren Werkzeug für alle Akteure, die im Bereich der ländlichen Elektrifizierung tätig sind.
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