analisi elettroluminescenza

Analisi EL

FOTOVOLTAICO

Analisi EL

FOTOVOLTAICO

EL or Electroluminescence analysis is the photographing (in the dark, with a camera equipped with a LWP high pass filter) of the weak emission caused by the passage of reverse current through the cells of a photovoltaic module. Through the analysis of an EL Outdoor image it is possible to identify:

1) defective (or short-circuited) by-pass diodes inside the module junction box
2) micro-fractures of the cells
3) PID (Potential Induced Degradation) of the cells
4) frontal electrical contact problems of the cells
5) mismatch of cells and/or modules present on the system

We recommend UV-F analysis in the following cases:

  • Following hail
  • Underperforming system
  • Problems resulting from poor insulation
  • Suspected presence of PID
  • Qualitative verification of pre-installation on new modules

EL analysis can be carried out in all seasons, mainly recommended at night.

Contact us for information on EL analyses