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At the end of the test the instrument provides the characteristic I-V measured under real OPC conditions (red colour)
concerning the single module or string tested, as shown in the screen below
Characteristic I-V curve under real OPC conditions
The comparison between the I-V curve measured under real OPC conditions and that characteristic of the producer
under STC conditions (green colour) can be requested.
Using the command COMPARISON the MODULES ARCHIVE menu is displayed: select the brand and module model
tested to be used in the comparison.
When clicking on Valid the parameters inserted in the modules archive (corresponding to those stated by the producer
of the modules) are used and the values measured by the instrument under real OPC conditions are recorded to the
STC reference standard conditions.
Comparison:
Pressing this button opens a window for entry of the brand and model of the panel measured, in order to compare the
measurements with the nameplate data; the measured values will appear alongside the nominal characteristics of the
panel. For a more accurate comparison, the age and corresponding presumed percentage of panel performance
degradation are requested; if you do not want to enter these data, press the "Do not apply" button.
Reference panel selection window
Ageing values entry box
When the panel settings have been chosen, the results of the comparison are displayed in the bottom left corner of the
graph as follows:
Measurements @ STD – NO
For the case in which the verification of the manufacturer declared tolerance of maximum power % does not
fall within the range of values measured on the panel (or string).
Measurements @ STD – OK
For the case in which the verification of the manufacturer declared tolerance of maximum power % does not
fall within the range of values measured on the panel (or string).
