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The general rules of terrestrial photovoltaic cell calibration
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| GB/T 6497-1986 | English | 319 |
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The general rules of terrestrial solar cell calibration
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Basic data
| Standard ID | GB/T 6497-2025 (GB/T6497-2025) |
| Description (Translated English) | The general rules of terrestrial photovoltaic cell calibration |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | K83 |
| Classification of International Standard | 27.160 |
| Word Count Estimation | 14,142 |
| Date of Issue | 2025-12-31 |
| Date of Implementation | 2026-07-01 |
| Older Standard (superseded by this standard) | GB/T 6497-1986 |
| Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China |
GB/T 6497-2025: The general rules of terrestrial photovoltaic cell calibration
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 27.160
CCSK83
National Standards of the People's Republic of China
Replaces GB 6497-1986
General provisions for calibration of ground-mounted photovoltaic cells
Published on 2025-12-31
Implemented on July 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 1
4.Instruments and Equipment 1
4.1 General Requirements 1
4.2 Photovoltaic cell short-circuit current measurement equipment 2
4.3 Photovoltaic Cell Spectral Responsivity Measurement Equipment 2
4.4 Spectral irradiance measurement equipment 2
4.5 Photovoltaic cell temperature measurement equipment 2
4.6 Photovoltaic Cell Solar Tracking Test Equipment 2
5.Determination of Standard Photovoltaic Cells 2
5.1 Standard photovoltaic cell sample 2
5.2 Performance Screening Test of Standard Photovoltaic Cell Samples 2
6.Calibration Method 2
6.1 Differential Spectral Responsivity Calibration Method 2
6.2 Ground-based solar calibration method 2
6.3 Solar Simulator Calibration Method 3
7.Calibration Data Processing 3
8.Recalibration of Standard Photovoltaic Cells 3
9.Calibration Report 3
Appendix A (Normative) Differential Spectral Responsivity Calibration Method and Ground Sunlight Calibration Method 4
A.1 Differential Spectral Responsivity Calibration Method 4
A.2 Ground-based solar calibration method 5
Appendix B (Informative) Solar Simulator Calibration Method 8
References 9
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 replaces GB 6497-1986 "General Provisions for Calibration of Ground-based Solar Cells". Compared with GB 6497-1986, except for structural adjustments...
Aside from integration and editorial changes, the main technical changes are as follows.
---The applicability of non-silicon-based photovoltaic cells, such as those using gallium arsenide, has been expanded (see Chapter 1);
---The definition of the calibration value has been changed (see Chapter 3, see Chapter 2 of the 1986 edition);
---The method for determining ground sunlight has been revised (see Appendix A, Appendix B of the 1986 edition);
---Added differential spectral responsivity calibration method and solar simulator calibration method (see Appendix A).
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 Institute of Metrology, China Huaneng Group Clean Energy Technology Research Institute Co., Ltd., and China Electronics Technology Group Corporation.
Technical Standardization Research Institute, Hechuang Testing (Jiangsu) Co., Ltd., Risen Energy Co., Ltd., Jinko Solar Co., Ltd.
JA Solar Technology Co., Ltd., Trina Solar Co., Ltd., Beijing Zhuxin New Energy Co., Ltd., and Shanghai Electric Group Co., Ltd.
Limited Liability Company.
The main drafters of this document are. Xiong Limin, Meng Haifeng, Zhao Zhiguo, Chen Xiaoda, Wang Ganqiang, Gao Chuanlou, Zhang Ying, Liu Yafeng, Huang Ling, and Jiang Xiulin.
Zhang Junchao, Yan Ping, Li Mengyuan, Zhang Yun, Li Longyun, Dong Guohuang, Xu Minwei.
This document was first published in 1986, and this is its first revision.
Introduction
With the development and updating of photovoltaic cell manufacturing processes, related metrology technologies, and international and domestic standards, the technical specifications stipulated in GB 6497-1986 have become increasingly important.
The language, content, and methods are no longer sufficient to meet the needs and urgently require updates to promote the healthy development of the photovoltaic industry. Internationally, ground-mounted Class I standard photovoltaic power...
Cell calibration methods are generally classified into three types. differential spectral responsivity calibration, ground-based sunlight calibration, and solar simulator calibration. Differential spectral responsivity calibration...
The response calibration method is not affected by external natural environmental conditions, the calibration work is convenient and practical, and it can achieve a high level of measurement uncertainty.
Ground-based solar calibration methods are divided into total radiation calibration and direct radiation calibration. Both require good sunlight conditions and are susceptible to weather and other natural factors.
The calibration process is subject to significant limitations and influences, requiring the selection of appropriate meteorological conditions and the implementation of corrections to obtain accurate and reliable calibration results. Solar simulator calibration.
The method is unaffected by natural environmental factors such as weather, but is limited by factors such as the mismatch between the solar simulator spectrum and the AM1.5G standard spectrum. This document...
This document covers the three methods mentioned above, and includes their specific requirements and data processing details in the appendix, providing a standard for Class I photovoltaic cells used in my country's ground-mounted applications.
The calibration process provides reference and guidance. In actual calibration work, the appropriate method can be selected based on the laboratory's own conditions.
GB/T 6497 aims to calibrate Class I standard photovoltaic cells for ground use, obtaining their short-circuit current values under standard test conditions, i.e., calibration.
These values are crucial for the traceability of downstream parameters in ground-mounted photovoltaic systems. This revision expands the scope of application, updates key definitions, and adds new values.
my country's independently traceable and internationally recognized differential spectral response calibration method has improved upon ground-based sunlight calibration methods, reflecting my country's technological advancements.
This document, while considering the current situation and future development, is both practical and instructive. It outlines the research, screening, and standardization of ground-mounted standard photovoltaic cells in my country.
It is of great significance in terms of definition and application.
General provisions for calibration of ground-mounted photovoltaic cells
1 Scope
This document specifies the equipment requirements, calibration methods, and calibration procedures for calibrating ground-mounted Class I standard photovoltaic cells.
This document applies to the calibration of ground-based photovoltaic cells, including silicon-based and gallium arsenide-based cells.
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 2297 Terminology for Solar Photovoltaic Energy Systems
GB/T 6495.2 Photovoltaic devices - Part 2.Requirements for standard photovoltaic devices
GB/T 6495.3 Photovoltaic devices - Part 3.Measurement principles of terrestrial photovoltaic devices based on standard spectral irradiance data
GB/T 6495.8 Photovoltaic devices - Part 8.Measurement of spectral response of photovoltaic devices
GB/T 6495.10 Photovoltaic devices - Part 10.Measurement methods for linear correlation and linearity characteristics
GB/T 46982-2025 Photovoltaic devices – Temperature and irradiance correction methods for IV characteristics (IEC 60891.2021, IDT)
3 Terms and Definitions
The terms and definitions defined in GB/T 2297 and the following terms and definitions apply to this document.
3.1
A standard device manufactured using prescribed methods, whose values are not derived from other photovoltaic cells, used for periodic calibration of secondary standard photovoltaic cells.
Note. In IEC 60904-4, the general term is primary reference.
3.2
The standard test conditions for ground-mounted photovoltaic cells are AM1.5G standard solar spectral irradiance, with a total solar irradiance of 1000 W/m².
The calibrated temperature of the volt-volt battery is 25°C.
3.3
calibration value
The short-circuit current value of a standard photovoltaic cell under standard test conditions.
4.Instruments and Equipment
4.1 General Requirements
The instruments and equipment should be calibrated by a nationally accredited metrology institution and be within their validity period.
...
