GB/T 9535.1-2025 Terrestrial photovoltaic (PV)modules—Design qualification and type approval—Part 1:Test requirements

Scope

This document specifies the design and type-approval requirements for ground-mounted photovoltaic modules operating in outdoor climates over the long term. Whether the module meets the service life requirements depends on its design, operating environment, and conditions. Test results cannot be used as a basis for predicting the module's lifespan.
This document applies to all types of ground-mounted flat-plate modules, such as crystalline silicon modules or thin-film modules. It does not apply to systems that are not operated over the long term, such as flexible modules installed in awnings or tents.
This document does not apply to high-concentration photovoltaic modules, but it can be used for low-concentration photovoltaic modules (concentration ratio of 1 to 3 times). For low-concentration photovoltaic modules, all tests are conducted under the irradiance, current, voltage, and power levels specified in the design for concentration.
This document does not address special photovoltaic modules with integrated electronic components, but such photovoltaic modules are referenced for use.
When the 98th percentile operating temperature of a photovoltaic module exceeds 70 °C, it is recommended to conduct tests under higher temperature conditions specified in IEC TS 63126. When certifying photovoltaic products with lower expected lifespan, it is recommended to use the test conditions for consumer photovoltaic products specified in IEC TS 63163. To ensure consistency between mass-produced modules and test modules, it is recommended to conduct quality system audits of photovoltaic manufacturers in accordance with IEC 62941.
The purpose of the test sequence in this document is to verify the electrical characteristics of the module and evaluate its ability to withstand long-term outdoor exposure within reasonable cost and time. To replicate the failures observed in the field, accelerated test conditions have been set based on exper

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