Circuitry Guidelines - Bosch c-Si M 48 Mode D'emploi

20 | Circuitry guidelines

5 Circuitry guidelines
Only identical solar modules of the same type and engine-
power class may be switched. In this process, ensure that
in the course of the serial switching of the modules, the
maximum permissible system voltage is not exceeded. In
this context, observe the temperature dependency of the
module voltage for the solar modules, particularly since
the module voltage rises when low temperatures prevail.
For the parallel switching of the modules, it must be en-
sured that always the same number of modules is serially
switched to the stands to be switched parallel to these,
and that suitable measures for surge protection are taken
(e. g. strand fuse). It must be ensured that the specified
load capacity with regard to the reverse current IR (17 A at
c-Si M60 and c-Si M48, 16 A at c-Si P60 and c-Si P48) is
not exceeded.
Bosch Solar Module c-Si M 48 I Bosch Solar Module c-Si M60 I Bosch Solar Module c-Si M60 S I Bosch Solar Module c-Si P60
Under standard conditions, a PV module can provide
higher current and/or higher voltage than was specified
under normed test conditions. To determine the voltagera-
ting values of structural components, the currentrating
values of cables, the sizes of fuses and the rating of con-
trols connected to the output of PV modules, the Isc und
Uoc values indicated on the module should therefore be
multiplied by a safety factor of 1.25.
No more than two module strands can be switched paral-
lel without a sufficiently-dimensioned strand fuse.
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Robert Bosch GmbH