Backsheet Scratch Resistance Tester

The Backsheet Scratch Resistance Tester evaluates the scratch resistance of photovoltaic (PV) module backsheets. By applying a standardized sharp edge with controllable speed across the module backsheet surface, it simulates scratches that may occur during transportation, installation, or daily use. This test assesses the durability and resistance of backsheet materials to sharp objects, providing reliable data for material selection, quality control, and certification compliance.

Application

This tester is widely applied in:

PV Module Backsheet Scratch Resistance Testing: Assess the backsheet’s ability to withstand scratches from sharp objects.

R&D Material Improvement Validation: Evaluate improvements in backsheet materials during development stages.

Certification Testing: Compliant with IEC 61730-2 and UL 1703 standards.

Material Selection and Comparison: Compare different backsheet materials for durability and scratch resistance.

Quality Control and Reliability Testing: Ensure consistent backsheet performance during production.

In-Process Sampling: Evaluate anti-scratch performance in production lines.

Standards

IEC 61730-2 – Photovoltaic (PV) Module Safety and Mechanical Performance

UL 1703 – Standard for Safety of Photovoltaic Modules

Parameters

Features

Aluminum alloy workbench ensures stability and durability.

Precision carriage design allows adjustable blade angle, distance, and weight for standard force application.

Motorized constant-speed traction with continuously adjustable speed simulates realistic scratching.

Adjustable traction direction accommodates different testing requirements.

Fully compliant with IEC 61730-2 and UL 1703 standards for backsheet scratch testing.

Easy operation with high repeatability, suitable for R&D and quality control laboratories.

Accessories

Workbench: Aluminum alloy with integrated traction pulleys.

Carriage: Equipped with saw blade and weight box, angle and distance adjustable.

Saw Blade: Carbon steel, thickness 0.64 mm ± 0.05 mm, tip radius 0.115 ± 0.025 mm.

Motor: Constant-speed traction, adjustable speed.

Weights: Standardized, ensures 8.9 N ± 0.5 N force.

Test Procedures

Place the PV module backsheet on the workbench and fix its position securely.

Install the carriage saw blade and adjust its angle, distance, and applied weight to meet the standard.

Set the motor speed and traction direction, ensuring a scratch speed of 150 ± 30 mm/s.

Check the workbench and surrounding area for safety to prevent operator contact with the blade.

Start the motor and perform the scratch test.

After testing, examine the backsheet surface for scratches and record the results.

Regularly inspect the saw blade, weights, and traction motor to maintain precision and safety.

Maintenance Information

Keep the workbench clean and free of debris.

Inspect the saw blade for wear and replace if necessary.

Verify weight boxes are correctly calibrated.

Check motor operation and ensure smooth traction.

Perform routine cleaning and maintenance to guarantee accurate and safe testing.

Conclusion

The Backsheet Scratch Resistance Tester provides a precise and repeatable method to evaluate PV module backsheet durability. By controlling blade angle, applied weight, and traction speed, it simulates real-world scratches encountered during transportation, installation, and use. The system ensures reliable material assessment, quality control, and compliance with IEC 61730-2 and UL 1703. supporting R&D, production monitoring, and certification laboratories.

FAQ

What is the main purpose of the Backsheet Scratch Resistance Tester?

It evaluates the scratch resistance of photovoltaic module backsheets by applying a controlled force using a standardized sharp edge. This simulates potential scratches during transportation, installation, or usage, helping assess the durability and mechanical reliability of backsheet materials.

How is the scratch applied to the module backsheet?

The scratch is applied via a saw blade mounted on a motorized carriage. The blade is weighted with standard weights (8.9 N ± 0.5 N) and moves at a controlled speed of 150 ± 30 mm/s. The blade angle and distance are adjustable to meet standard testing requirements.

Does the tester comply with international standards?

Yes. It fully complies with IEC 61730-2 for PV module safety and mechanical performance, and UL 1703 for module safety standards. This ensures results are reliable for certification, R&D, and quality control purposes.

Can the traction speed and direction be adjusted?

Yes. The traction motor allows continuous speed adjustment, and the traction direction is adjustable. This flexibility ensures that the test can simulate a wide range of real-world scratch scenarios on different module backsheets.