Power categories
MPP tracker Input current
DC input
Symo 15-20 kVA
MPP1 33 A (I
DC NOMINAL
)
DC+1
MPP2 27 A (I
DC NOMINAL
)
DC+2
Divide the solar module strings between the two MPP tracker inputs (DC+1 and
DC+2). The DC- terminals can be used however you wish, as they are internally
connected. A clearly numbered connection, but also at the DC- terminal, makes
it easier to find the correct string, e.g., during a testing action. Set the MPP
tracker 2 to the "On" position during initial commissioning. The user can of
course also do this later in the Basic menu of the inverter.
Single MPP tracker mode on both MPP tracker inputs:
If the solar module strings are connected to a string combiner box (GAK - gener-
ator junction box) and the distance to the inverter is bridged by means of a DC
string, this DC string can be connected to the inverter as follows.
Jumpering
With jumpering, the MPP tracker 1 and
MPP tracker 2 can be jumpered to-
gether. This takes place as shown in
the image via the connection DC+1
(Pin2) to DC+2 (Pin1).
IMPORTANT! The MPP tracker 2 must
be set to OFF. This can be checked in
the Basic menu of the inverter.
IMPORTANT! The cable diameter of
the DC connection cable and the
jumpering must be the same. Jumper-
ing of the DC- terminal is not neces-
sary because it is jumpered internally.
DC Con Kit 25
The Fronius DC Con Kit 25 (4,251,015) can be used to connect a solar module
string with a cross-section of up to 25 mm² to the inverter.
23
EN
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