KACO XP10U-H4 - Manual (Page 24)

I n s t a l l i n g t h e I n v e r t e r
Page 24 Installation Instructions blueplanet XP10U H4 / H6 and XP10U H4 / H6 PSD
7.3.2.4 Optional 1 MPP PV system connection
The DC inputs can also be connected in parallel. Only strings with identical MPP voltage can be connected in parallel
(n
1
=n
2
=n
m
).
The maximum input current rises to 37.2 A for parallel connection.
In case of a parallel input connection, MPP trackers A and B must be bridged. If input 1 is connected to input 2 and input 3
is connected to input 4, then there is no parallel operation and the maximum input current continues to be 18.6 A. Parallel
operation is automatically recognized by the inverter.
Electrical data for parallel connection
Connection of the DC inputs Number of modules per string n
1
=n=n
m
P
max
< 13.5 kW
I
max
< 37.2 A
MPP tracker A MPP tracker B
U
MPP
...
n
1
n
2
n
m
= =
MPP tracker A MPP tracker B
U MPP
...
n
1
n
2
n
m
= =
Figure 14: Parallel input connection in the
array junction box
Figure 15: Parallel input connection with Y adapter, short
circuit of MPP tracker B *
NOTICE (see Figure 15 on page 24)
If one of the MPP trackers (A or B) is not used it must be short-circuited. Otherwise, faults can occur in the
self-test of the unit and the feed-in operation is not guaranteed. This does not lead to damage to the unit.
The recommended standard connection or the parallel input connection should be selected as
a matter of course before an MPP tracker is short-circuited and therefore remains unused.