Schüco MPE 230 PG03 Modulmontage Seite 22

7.1. Grounding
Module frames and installation systems must be connected to the earth potential in accordance with regional and
national standards and regulations.
The screw diameter has to have a diameter 4 mm and a toothed lock washer has to be used.
If necessary, connect lightning protection and over voltage protection (OVP) devices.
If a building has a lightning protection system, the photovoltaic installation must be integrated into the lightning
protection concept.
IMPORTANT
► Earthing interconnections may not be used as mechanical safety
mechanisms.
7.2. Bypass diodes
Partial shading of a series of solar cells causes hot spots and also leads to a dramatic reduction in power output.
For safety and also to mitigate the effects of partial shade on the modules, bypass diodes in parallel with the solar
cells are included in the junction box of each module.
The diodes are installed and checked at the factory.
The bypass diodes minimize the effects of partial shading, however even a small amount of shade still has the
potential of a significant decrease in system performance, so it is important for the installer to quantify any shade
on the modules and understand the effect it will have before installing the modules.
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274 116
EN
04.2012