Inspection Procedures

Electroluminescence Method

  • Contactless inspection procedure
  • Special camera with infrared sensors
  • Mobile use at the customer site
  • Individual modules can be inspected
  • Detection of damage such as micro cracks caused by hail, snow, PID or transport
  • Detection of electrically non-active areas (cells/cell segments)
  • Detection of errors/defects which cannot be detected via a visual inspection

Detection of hidden cell damages after hail

PV module without detectable damage

Thermography Method

  • Special camera to take infrared images
  • Contactless inspection procedure
  • Mobile use at the customer site
  • Individual modules or entire system can be inspected
  • Detection of defective bypass diodes, faulty solder joints (increased transition resistance), inactive PV modules/cells
  • Inspection of inverter, AC connections, fuses and the DC wiring and the DC plug connectors
  • Detection of defects which can´t be detected via a visual inspection

Early detection of potential fire hazards with the thermography method

Defective bypass diode leads to output losses of the string

Characteristic Curve Measurements

  • Proven and known inspection method for determining the output
  • Fast and mobile method for determining the output of individual modules or entire strings
  • Determination of the current/actual output under real conditions
  • Detection and analysis of shadows and/or defective modules

 


Detection of defective modules in the string

Correctly working string
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