Photovoltaic Measuring and Testing
To guarantee a good quality and high yields, solar panels should be checked and maintained regularly. Modern tests give information about different kinds of damages and their causes.
Find a testing service now!
Kinds of Damages
- Decreased performance
- Micro cracks, broken cells and inactive areas
- Faulty bypass diodes
- Hotspots and other thermic abnormalities
- Manufacturing quality
Causes of Damages
- Transport damages
- Integration damages
- Hail damages
- Storm damages
- Lightning damages / overvoltage
This test maps the performance of your solar panel through high-performance LED flashes. During this so-called 'flashing', the module gets flashed with a calibrated flasher, measuring the electrical output and power under standard test conditions (STC).
High-resolution electroluminescence recordings can visualise damage to cells, making fractures and micro cracks on the solar cells visible. In an electroluminescence test, a module is photographed with three high-resolution NIR-CCD cameras that detect even the smallest cracks and damages. The test documentation comprises images of the complete module and of every damaged cell.
A thermal imaging camera allows the detection of thermal anomalies in the solar cells in the photovoltaic module. During a thermographic test, possible weak spots in cells, connectors and junction boxsed are identified with the help of an infra-red camera.
Other possible test include insulation tests, where the modules are placed in a bath of water while 1000 volts DC is applied to them. A module passes the test when it upholds resistance for two minutes.
You own a testing company? Enter it into our business directory now!