GB/T 46981-2025 Extended thermal cycling of PV modules—Test procedure

Scope

This document defines an extended test sequence based on the IEC 61215-2 thermal cycling test, which is used to distinguish photovoltaic modules with higher thermal cycling durability and to evaluate the performance of modules installed in areas susceptible to thermal cycling stresses. At the same time, this document stipulates the practice of reducing the total test time by increasing the maximum cycle temperature and/or increasing the number of test modules. This document is applicable to crystalline silicon photovoltaic modules with a glass encapsulated front panel. Flexible modules without glass encapsulation are subject to different stress conditions compared to glass encapsulated modules, therefore, the equivalent coefficients used in this document may not be applicable to such modules. Appendix B provides guidance for assessing whether it is necessary to conduct this test at the target deployment site.

Development Information

Referenced Standards

Adopt standards

Related Standards