SolarString EL-basic | EL-lab

Electroluminescence testing system for the inspection of solar strings

The SolarString EL-basic is an electroluminescence testing system. The device can be used to test strings using electroluminescence, before lamination during the production process or in the rework area. The device can also be used to optimize the soldering parameters in the stringer. The electroluminescence principle can be used to visualize solder defects such as overheating, so that they can be corrected easily. The system is available in two different configurations: EL-lab with a resolution of 400µm/pixel and the EL-basic with 200µm/pixel.

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Special features:

  • Inspection system for production, repair, and laboratory
  • Easy to operate
  • Rapid image acquisition through multi-camera concept
  • High resolution
  • Low investment cost

Available Options:

  • Optional 2D measuring
  • Optional edge inspection

After closing the protective cover, the string is automatically connected to the power supply. After connecting the power supply and closing the protective cover, several cooled NIR-CCD cameras take high-resolution EL images of every cell in a string, so that even the smallest micro-cracks become visible.

A user-friendly software interface displays the images taken by the cameras in sequence. The user can navigate through the sequence interactively and look at enlarged views of individual images. The strings are assessed manually by the operator. The software stores all results, images, and parameters for a string under a unique ID on the hard drive.

The rapid image acquisition, the convincing operating concept, and an attractive price turn the SolarString EL-basic into a testing system which is particularly well suited to production.