GB/T 29551-2023 (English Version)

Standard No.: GB/T 29551-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 29551-2023
Replace: GB/T 29551-2013

Scope: This document specifies the materials, technical requirements, test methods, inspection rules, packaging, labeling and marking, transportation and storage of solar photovoltaic laminated glass for building use. This document is applicable to solar photovoltaic laminated glass for building integrated photovoltaic (BIPV).

Introduction

GB/T 29551—2023 Standard Overview

GB/T 29551—2023 "Solar Photovoltaic Laminated Glass for Buildings" is an important technical specification in the field of construction, which aims to ensure the safety, durability and functionality of solar photovoltaic laminated glass. This standard replaces the previous GB/T29551—2013 version, mainly optimizing and supplementing material requirements, technical parameters and test methods.

Standard Framework Comparison

Chapter Content	2013 Version Requirements	2023 Version Updates
Material	Not clearly classified, only some requirements are mentioned.	Added new material classifications (such as crystalline silicon cells, thin-film cells, etc.), and refined performance indicators.
Technical parameters	Includes basic technical requirements, but does not cover the latest test methods.	Added new requirements such as resistance to cyclic mechanical loads and steady-state tests, and introduced the test procedures of the international standard IEC61215-2.
Test methods	Some test methods are relatively general and not explained in detail.	Refine all test processes, add standard test conditions (STC), steady-state tests, and PID tests, etc.

Explanation of professional terms

Lead-out terminal: A device used to lead direct current out of photovoltaic laminated glass, usually composed of junction boxes, cables, etc.

Intermediate layer: Adhesive material located on both sides of photovoltaic cells, such as polyvinyl butyral (PVB) or polyethylene octene co-elastomer (POE), which plays a bonding and protective role.

Moisture and heat resistance: refers to the ability of glass to maintain electrical insulation and mechanical strength in high temperature and high humidity environments, and is a key indicator for evaluating the long-term stability of photovoltaic modules.

Implementation Recommendations

Material Selection:Choose the appropriate photovoltaic cell type (crystalline silicon or thin film) and interlayer material according to the building requirements to ensure its weather resistance and transparency.
Testing Process:Strictly carry out appearance inspection, dimensional deviation measurement, insulation test, etc. in accordance with standard requirements to ensure that product quality meets the requirements.
Quality Control:Establish a complete production monitoring system and regularly check key parameters (such as wind pressure resistance and hail resistance) to ensure long-term stability.
Technological Innovation:Pay attention to the development of photovoltaic technology, update materials and processes in a timely manner, and improve product efficiency and service life.

GB/T 29551-2023 Referenced Document

GB 11614 Flat glass
GB 15763.1 Safety glazing materials in building.Part 1:Fire-resistant glass
GB 15763.2 Safety glazing materials in building-Part2:Tempered glass
GB 15763.3 Safety glazing materials in building.Part 3:Laminated glass
GB 15763.4 Safety galzing materials in building.Part 4:Heat soaked thermally tempered glass
GB/T 1216 External micrometer
GB/T 17841 Heat strengthened glass
GB/T 21389 Vernier,dial and digital display calipers
GB/T 34328 Iight weight thermally strengthened glass
GB/T 37825 Test method for simulating wind pressure resistance of building glass under the uniform static loads
GB/T 9056 Metal ruler
IEC 61215-2 Terrestrial photovoltaic (PV) modules - Design qualification and type approval - Part 2: Test procedures
JC/T 1006 Tempered and heat-strengthened enamelled glass
JC/T 2170 Anti-reflective coated glass for photovoltaic modules

GB/T 29551-2023 history

2023 GB/T 29551-2023 Solar photovoltaic laminated glass for buildings
2013 GB/T 29551-2013 Laminated solar PV glazing materials in building