Multiple series of OSDA photovoltaic modules have successfully completed cyclic (dynamic) mechanical load testing conducted by TÜV Rheinland in accordance with IEC TS 62782:2016.

Upon completion of assessment, OSDA commissioned TÜV Rheinland to issue a dedicated Test Report documenting the full test results.

The TÜV Rheinland Test Report documents the cyclic (dynamic) mechanical load testing performed per IEC TS 62782:2016, including tested module configurations and complete test results. The test covers multiple OSDA TOPCon crystalline‑silicon PV module series with a maximum system voltage of 1 500 V.

This TÜV‑issued test report provides independent third‑party validation for the tested module configurations, confirming successful completion of cyclic (dynamic) mechanical load testing in compliance with IEC TS 62782:2016.

Cyclic (Dynamic) Mechanical Load Testing Provides a Complementary Assessment of Module Response to Repeated Mechanical Loading

In actual PV power plant operating conditions, mechanical loads acting on modules are not purely static.

Variations in wind speed, gusts and turbulence can subject modules to repeated positive pressure and negative suction. Operation of tracking systems may also introduce periodic vibration, while temperature fluctuations and mechanical interactions between modules and mounting structures result in continuous bending and varying stress levels on modules.

Compared with static load testing alone, cyclic (dynamic) mechanical load testing delivers an important complementary assessment of module reliability under repeated alternating‑loading conditions.

Under IEC TS 62782, the module is mounted at its designated support points and subjected to uniform loads normal to its surface, alternating between positive and negative directions. This test evaluates the resistance of critical module components — including solar cells, interconnect ribbons, electrical interconnections and edge seals — against damage induced by recurring mechanical stress.

Six Representative Module Models Tested

According to the TÜV Rheinland Test Report, six OSDA module models were selected to represent different product structures and material configurations:

· ODA710‑33V‑MHD

· ODA610‑33V‑MHDRz

· ODA755‑78NTS‑DGR

· ODA740‑66NTZ‑DG

· ODA600‑36V‑MHD

· ODA595‑36V‑MHD

The assessment covered visual inspection, maximum power determination, insulation testing, wet leakage current testing and electroluminescence (EL) inspection.

Test conclusions apply exclusively to the module models and material configurations explicitly identified within the TÜV Rheinland test documentation.

Additional Reliability Validation for Large-Format Modules

As PV modules evolve toward larger formats, higher power ratings and thinner glass, their capability to withstand repeated mechanical stress draws growing attention from project developers, EPC contractors and investors.

Large‑format bifacial glass‑glass modules enable higher power density, bifacial energy‑yield gains and balance‑of‑system cost optimization. Meanwhile, such designs place higher requirements on compatibility among module structures, mounting systems, clamp positions and installation methods.

Module reliability relies not only on individual components, but also on system‑level coordination between modules, mounting structures, clamps and installation practices. Strict adherence to specified clamping zones and installation instructions within the module installation manual is critical to mitigating risks of glass breakage, cell micro‑cracks and long‑term performance degradation.

Continuously Strengthening the Product Reliability Validation System

The TÜV Rheinland Test Report delivers dedicated third‑party documentation verifying successful IEC TS 62782:2016 cyclic (dynamic) mechanical load performance for the tested OSDA module configurations.

Such documentation is highly relevant for utility‑scale PV projects, where project owners and other stakeholders often require objective evidence of cyclic dynamic mechanical load performance as part of project documentation and technical due‑diligence activities.

By providing this independent third‑party test documentation, OSDA supports project owners, EPC contractors and other stakeholders in evaluating module reliability and satisfying project‑specific documentation requirements. 

Moving forward, OSDA will keep advancing product development and quality management with focus on high efficiency, high reliability and full‑lifecycle value, delivering stable and dependable photovoltaic products and energy solutions to global customers.