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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
6 Planning the installation
Parallel-connected DC inputs
+
–
DC wiring
PV array
Distribution box
Fig. 6.14: Parallel-connected DC inputs
The module strings are brought together in a distribution box
and then the DC cables are connected to DC 1 and DC 2. MPP
tracker 1 controls all the module strings; MPP tracker 2 is not
used.
This way, only symmetrically configured DC inputs can be imple-
mented.
This variant of the DC cabling is
mandatory
for solar modules
that are grounded.