Siliken Atakama ATK-P60, Инструкция по эксплуатации

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8
By-pass diodes
The photovoltaic module must be protected with by-pass diodes. The
absence of these diodes could cause the photovoltaic module to
malfunction or even ultimately lead to its destruction as it could catch
on fire. Siliken delivers its modules with by-pass diodes included inside
the connections box.
The photovoltaic cells have two operating modes: it operates as a current
generator or as a current consumer. A cell exposed to solar radiation
provides a current ranging between 6 and 8 amps with a potential
difference of around 0.6 volts. However, when a cell is partially shaded,
by the leaves of a tree for example, it starts to consume the electricity
generated by the other cells to which it is connected. At the area of the
cell that changes from a sunlit area to a shaded area, an effect known
as a "hot-spot" occurs whereby, due to the circulation of current, the
overheating produced is such that it may set the materials on fire and
destroy the module. The maximum number of cells connected in series
per diode is 20 cells for Atakama PV modules.