GB/T 43057-2023 Photovoltaic(PV) modules—Dynamic mechanical load testing

Scope

This document specifies the method for dynamic mechanical load testing of photovoltaic modules. The photovoltaic modules are placed on the designed support points, and a uniform load is applied vertically to the surface of the photovoltaic modules in an alternating cycle of forward and reverse directions. This test is used to evaluate whether the internal components of solar cells, interconnect strips, and/or electrical connections are susceptible to damage, or whether the edge sealing will fail due to mechanical stress during the installation and operation of the photovoltaic modules. This test is conducted at any temperature within the normal operating temperature range of the modules. Since the temperature of the modules during the load application affects the test results, it is crucial to maintain a constant temperature of the modules during the test. This document is applicable to the testing of rigid modules, but not to flexible modules. However, it can be used for flexible modules with rigid supports. This document is an independent technical specification, but it is often used in conjunction with other standards. Generally, there is no power loss during the test itself, but after conducting this test, followed by other tests such as thermal cycling and moisture-freezing tests, power loss will occur. This power loss stems from the damage caused to the modules by dynamic mechanical loading, rather than solely from thermal cycling and moisture-freezing tests. For example, the Transportation Test Procedure (IEC 62759) requires conducting 50 thermal cycling tests and 10 moisture-freezing cycling tests after the dynamic mechanical load test.

Development Information

Referenced Standards

Adopt standards

Related Standards