100% SunSniffer® = 100% Transparency

Most common errors

Most common errors

 

 
 
Selection of possible Errors and defects:
 

Potential or light induces degration reduce the Performance continually, without being noticed. And without constant voltage measurement in the module, PID recognition in the field is simply impossible.
 

Common detection: Electroluminescence / open-circuit voltage measurements
Necessary requirements: Plant inspecton / good access to the modules

Detection by SunSniffer: Measurement and analysis of module voltage


One defective diode reduces modules voltage to 66%, two defective diodes down to 33%. This is not noticeable without measurement of modules voltages.

Common detection: Junction box opening / open-circuit voltage measurements
Necessary requirements: Plant inspecton / good access to the modules

Detection by SunSniffer: Measurement and analysis of module voltage

 
 

Badly-soldered connections or structural defects in the cell cause selective heat productions at those spots. Any hot spot is a power leakage. 

Common detection: IR-thermography / visual inspection
Necessary requirements: Plant inspecton / good access to the modules

Detection by SunSniffer: Measurement and analysis of module voltage

 

Hail can cause serious defects of cells. Cracks in a cell may be small, but can cause or accelerate degradation.

Common detection: Electroluminescence / visual inspection
Necessary requirements: Plant inspecton / good access to the modules

Detection by SunSniffer: Measurement and analysis of module voltage

 

Further information:

Solar Bankability


Internationale Energie Agentur


Fraunhofer CSP


TÜV Rheinland


ZAE Bayern


DLR / NEXT ENERGY