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Learning to measure solar irradiance

One of the variables that we must check before carrying out a photovoltaic inspection with drones is the irradiance, for this we must use a solar meter like this one shown in the video. It is a device that we can buy online and is designed to measure the value of irradiance in open environments, we should not confuse the solar irradiance meter with a light meter because the measurements and the ranges that we are going to obtain are different.

 

To measure the irradiance before carrying out an inspection of a solar plant, we must place the equipment perpendicular to the photovoltaic panel. If the value obtained is around 400 W/m2, we are within the minimum limits. The value obtained in the video is about 200 W/m2, in this case this value of solar irradiance is not suitable for carrying out the work.

 

For a successful inspection (as far as irradiance values are concerned) we must have values from 600 W/m2 as stated in the IEC TS 62446-3standard.

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