PV module mechanical load testing

Mechanical load testing (MLT) is an essential part of quality control for photovoltaic (PV) modules. It ensures that PV panels can withstand external forces such as human handling and weather conditions, like wind and snow, without compromising safety or efficiency.

An image of a solar panel in a module load testing device. The solar panel is bent under pressure from the device.

Why?
Solar panel manufacturers typically provide a mechanical load rating for their panels, indicating the type (static or dynamic) and amount of external force the panel can withstand. In cases where this information is not provided, or to ensure that a specific panel or batch of panels meets the industry standards, NERC Laboratories’ MLT-device can provide the necessary testing.

Photovoltaic module mechanical load testing device
Number of cylinders 12
Testing area CA. 2200mm * 1200mm
Maximum load PULL (pressure on 1.7 m^2) 7000 N (4100 Pa)
Maximum load PUSH 15000 N (8800 Pa)
Highest possible dynamic testing frequency 0,5 Hz
Electrical continuity measurement
Deflection measurement
STATIC TESTING IEC 61215
DYNAMIC TESTING IEC 62782