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GB/T 20047.2-2025: Photovoltaic (PV) module safety qualification - Part 2: Requirements for testing
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GB/T 20047.2-2025: Photovoltaic (PV) module safety qualification - Part 2: Requirements for testing

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ICS 27.160 CCSK83 National Standards of the People's Republic of China Photovoltaic Module Safety Assessment Part 2.Test Requirements (IEC 61730-2.2023, IDT) Published on 2025-12-31 Implemented on April 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Table of contents

Preface III Introduction IV 1.Scope 1 2 Normative References 1 3.Terms and Definitions 2 4.Test Category 3 4.1 General Rules 3 4.2 Environmental stress test 3 4.3 Routine inspection and testing 3 4.4 Electric Shock Risk Test 4 4.5 Fire Risk Test 4 4.6 Mechanical stress test 5 5.Classification and Necessary Test Procedures 6.Sampling 7. 7 Test Report 7 8.Experiment 8 9 Judgment Criteria 10 10 Test Procedure 10 10.1 General Rules 10 10.2 Visual Inspection MST01 10 10.3 Performance under standard test conditions MST02 12 10.4 Maximum Power Determination MST03 12 10.5 Insulation Thickness Test MST04 12 10.6 Marking durability test MST05 13 10.7 Sharp Edge Test MST06 13 10.8 Bypass Diode Functionality Test MST07 15 10.9 Accessibility Test MST11 15 10.10 Scratch resistance test MST12 16 10.11 Equipotential Bond Continuity Test MST13 17 10.12 Pulse Voltage Test MST14 18 10.13 Insulation test MST16 19 10.14 Wet leakage current test MST17 19 10.15 Temperature Test MST21 19 10.16 Hot Spot Durability Test MST22 20 10.17 Fire resistance test MST23 20 10.18 Flammability test MST24 20 10.19 Bypass Diode Thermal Performance Test MST25 23 10.20 Reverse Current Overload Test MST26 24 10.21 Component Failure Test MST32 25 10.22 Screw Connection Test MST33 28 10.23 Static Mechanical Load Test MST34 30 10.24 Peel test MST35 30 10.25 Lap joint shear strength test MST36 33 10.26 Material creep test MST37 35 10.27 Lead-out end strength test MST42 36 10.28 Thermal cycling test MST51 36 10.29 Wet Freeze Test MST52 36 10.30 Damp heat test MST53 37 10.31 UV test MST54 37 10.32 Cold Condition Test MST55 37 10.33 Dry heat condition test MST56 37 10.34 Insulation Coordination Assessment MST57 38 Appendix A (Informative) Recommendations for Testing Photovoltaic Modules on Production Lines 42 A.1 General Rule 42 A.2 Component output power 42 A.3 Wet Insulation Test 42 A.4 Visual Inspection 42 A.5 Bypass Diode 43 A.6 Equipotential Bond Continuity 43 Appendix B (Informative) Fire Resistance Tests, Flame Spread and Combustion Block Tests for Photovoltaic Modules 44 B.1 General Rule 44 B.2 Fire Resistance Test of Photovoltaic Modules Based on ENV1187 44 B.3 Fire Resistance Test of Photovoltaic Modules Based on ANSI/UL61730-2 45 Appendix C (Normative) Rules for the Use of Representative Samples for Extremely Large Samples 47 References 50

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document is Part 2 of GB/T 20047 "Safety Assessment of Photovoltaic Modules". GB/T 20047 has already published the following parts. ---Part 1.Structural Requirements; ---Part 2.Test Requirements. This document adopts IEC 61730-2.2023 "Safety qualification of photovoltaic modules - Part 2.Test requirements". Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This document is under the jurisdiction of the National Technical Committee on Standardization of Solar Photovoltaic Energy Systems (SAC/TC90). This document was drafted by. China National Testing & Inspection Group Co., Ltd., Anhui Huasheng New Energy Technology Co., Ltd., and Chint Group. New Energy Technology Co., Ltd., Shanghai Hengxi Photovoltaic Technology Co., Ltd., Orient Sunrise New Energy Co., Ltd., and LONGi Green Energy Technology Co., Ltd. Limited Liability Company, JA Solar Technology Co., Ltd., Ningbo Ouda Optoelectronics Co., Ltd., Telecommunication Technology Labs (Jiaxing) Co., Ltd. China Electronics Technology Standardization Institute, China Electric Power Technology Research Co., Ltd., Yidao New Energy Technology Co., Ltd., Tangshan Hai Taixin Energy Technology Co., Ltd., Xining Branch of State Power Investment Corporation Yellow River Upstream Hydropower Development Co., Ltd., and China Huaneng Group Qing Clean Energy Technology Research Institute Co., Ltd., Shanghai Ruiqi Measurement & Control Technology Co., Ltd., Hubei Hongtu Instrument Co., Ltd., Zhejiang Jinbei Energy Technology Co., Ltd. Limited Liability Company, China National Accreditation Service for Conformity Assessment, Shanghai Houyao Testing Equipment Co., Ltd., Wuxi Baishiqi Photovoltaic Technology Co., Ltd. China Quality Certification Center Co., Ltd., Wuxi Inspection, Testing and Certification Institute, Zhejiang Jinko Solar Co., Ltd., Chengdu Product Quality Inspection Research Institute Co., Ltd., Zhejiang Jianheng Testing Technology Co., Ltd., Beijing Low Carbon Clean Energy Research Institute, and Electric Energy (Beijing) Certification Center have Limited Liability Company, China Energy Conservation Solar Technology (Zhenjiang) Co., Ltd., Guangdong Aofei New Energy Co., Ltd., Jiangsu Zhongxinbo New Energy Technology Co., Ltd. Co., Ltd., Xuancheng Conch Building Photovoltaic Technology Co., Ltd., Yingli Energy Development Co., Ltd., Xi'an Dena Inspection and Testing Co., Ltd., Hua Energy New Energy Co., Ltd., Huaneng Xinjiang Energy Development Co., Ltd., GCL System Integration Technology Co., Ltd., and Shenzhen Skyworth Photovoltaic Technology Co., Ltd. Research and Development Co., Ltd., Shandong Oushengda New Energy Co., Ltd. The main drafters of this document are. Li Zhuolin, Li Na, Xu Minwei, Zheng Xiaowen, Ye Dongting, Li Zhenguo, Jiang Hongbo, Zhang Jun, Xie Xiaoliang, and Liu Dingpu. Pang Jian, Wang Dong, Li Jiadong, Li Jiwei, Yang Jianwei, Liu Shuai, Tao Liushi, Guo Yonggang, Dong Huazhan, Tao Wusong, Zhang Kejia, Pei Huichuan, Bu Cong, Wang Yong, Mao Weiwei, Tian Yongfeng, Chen Xiaoda, Zhong Dalong, Xu Pei, Wang Zhong, Li Menglei, Li Chen, Li Jianhua, Gan Haiping, Chen Guangyuan, Shao Yahui, Dong Ruijun Ji Runjing, Hou Shuyuan, Yin Zhilong, Shu Jian, Yu Bo, Huang Guoping, Feng Jianbo, Zhu Jia, Cheng Haonan, Sun Xianqing, Wang Meijuan, Li Junchao, Wang Zhiguo Yu Xiaoming, Li Guang, Ye Lin, Zhuang Na, Wang Shuping, Ni Tianyi.

Introduction

GB/T 20047 "Safety Assessment of Photovoltaic Modules" provides protection against electric shock, fire, and personal injury caused by mechanical and environmental stresses. The assessment requirements provide positive guidance for the safety assessment of photovoltaic modules. GB/T 20047 is proposed to consist of the following parts. ---Part 1.Structural Requirements. The purpose is to specify the structural requirements for the safety assessment of photovoltaic modules. ---Part 2.Testing Requirements. The purpose is to specify the testing requirements for the safety qualification of photovoltaic modules. Note. The correspondence between each part and the IEC 61730 series of international standards is as follows. ---Part 1 corresponds to IEC 61730-1; ---Part 2 corresponds to IEC 61730-2. The purpose of this document is to provide some basic structural guidelines for photovoltaic modules to pass the safety qualification test of GB/T 20047.2. This guideline outlines requirements designed to reduce the risk of fire, electric shock, and other hazards caused by misuse, improper handling, or breakage of internal components due to component application level misuse. Personal injury. This document specifies the basic safety structural requirements necessary to meet the end-use performance of components. For the requirements of ground-mounted photovoltaic modules with a 98th percentile operating temperature greater than 70°C for long-term operation under outdoor climatic conditions, please refer to IEC 63126. Photovoltaic modules combined with power conversion equipment, monitoring or control devices (such as integrated inverters, converters or output limiting function modules) For specific requirements, please refer to IEC 62109-3. The lifespan of a component depends on its design, environment, and operating conditions; therefore, test results cannot quantitatively predict the lifespan of a component. Some content in this document may apply to flat-panel photovoltaic modules with a concentration ratio of less than 3 times, but this content is not specifically for... This type of concentrating component is specified. This document is consistent with the test sequence of GB/T 9535 (IEC 61215), so one set of samples can be used simultaneously for the safety testing of photovoltaic modules. Qualification tests and design finalization qualification tests. Any structural modifications to photovoltaic module materials, design, or internal spacing shall be evaluated and re-evaluated in accordance with this series of standards and IEC TS62915. Test (where applicable). The basic requirements outlined in this document do not cover all national and regional regulations. In addition to the requirements outlined in this document, relevant ISO standards may also be adopted. The installation and use of photovoltaic modules in a local area are governed by the structural requirements in the relevant national or local regulations. Photovoltaic Module Safety Assessment Part 2.Test Requirements

1 Scope

This document specifies the testing requirements for the safety assessment of photovoltaic modules. GB/T 20047.1-2025 specifies the basic structural requirements for photovoltaic modules. The scope of this requirement also applies to this document. When this document is used for safety assessment, it should only be used in conjunction with GB/T 20047.1-2025.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 2423.1-2008 Environmental testing of electrical and electronic products – Part 2.Test methods – Test A. Low temperature (IEC 60068-2- 1.2007, IDT) GB/T 2423.2-2008 Environmental testing of electrical and electronic products – Part 2.Test methods – Test B. High temperature (IEC 60068-2- 2.2007, IDT) GB/T 7124-2008 Determination of tensile shear strength of adhesives (rigid material to rigid material) (ISO 4587.2003, IDT) GB/T 16842-2016 Test apparatus for testing protection of people and equipment by enclosures (IEC 61032.1997, IDT) GB/T 16935.1-2023 Insulation Coordination of Equipment in Low-Voltage Power Supply Systems - Part 1.Principles, Requirements and Tests (IEC 60664-1.2020, IDT) GB/T 20047.1-2025 Safety qualification of photovoltaic modules - Part 1.Structural requirements (IEC 61730-1.2023, IDT) Note. GB/T 16927.1-2011 High Voltage Testing Techniques – Part 1.General Definitions and Test Requirements (IEC 60060-1.2010, MOD) IEC 60068-3-5 Environmental testing – Part 3-5.Supporting documentation and guidelines; Validation of the performance of the incubator (Environmental tests) turechambers) Note. GB/T 2424.5-2021 Environmental Testing Part 3.Supporting Documents and Guidelines for Performance Validation of Temperature Test Chambers (IEC 60068-3-5.2018) IDT) IEC 60598-1.2020 Luminaires - Part 1.General requirements and tests Note. GB/T 7000.1-2023 Luminaires – Part 1.General requirements and tests (IEC 60598-1.2020, MOD) IEC 60695-2-10 Fire hazard testing – Part 2-10.Test methods based on glow wire/hot wire equipment and general Note. GB/T 5169.10-2017 Fire Hazard Testing of Electrical and Electronic Products - Part 10.Basic Test Methods for Glow Wire/Hot Wire Apparatus and General test method (IEC 60695-2-10.2013, IDT) ment-Safety-Part 1.Generalrequirements) ...