I n s t a l l i n g t h e I n v e r t e r
Installation Instructions blueplanet XP10U H4 / H6 and XP10U H4 / H6 PSD
Page 21
7.3.2.1
Before the connection
Ensure that there is no ground fault
1.
Determine the DC voltage between the
–
Protective earth (PE) and the positive lead of the PV array
–
Protective earth (PE) and the negative lead of the
PV array
If stable voltages can be measured, there is a ground fault in the DC generator or its wiring. The ratio between the
measured voltages gives an indication as to the location of this fault.
2. Rectify any faults before taking further measurements.
3. Determine the electrical resistance between the
–
Protective earth (PE) and the positive lead of the PV array
–
Protective earth (PE) and the negative lead of the PV array
Low resistance (< 2 MΩ) indicates a high-ohm ground fault of the PV array.
4. Rectify any faults before connecting the PV array.
7.3.2.2
Maximum input power
The input power of the inverter is limited only by the maximum input current of 18.6 A per input. This causes the maxi-
mum input power per path to increase with the input voltage.
NOTICE
The overall power of the unit continues to be limited. If one input is connected to more than P(DCmax)/2,
the maximum input power of the second input decreases accordingly. Take care that the maximum input
power is not exceeded.
7.3.2.3
Standard 2 MPP PV system connection
Equal MPP voltages must be applied to input 1 and 2, as well as inputs 3 and 4. The MPP voltages of the two DC paths can
be diff erent. They are tracked by separate, independently operating MPP trackers (MPP trackers A and B). (n
1
=n
2
, n
3
=n
4
).
Electrical data for standard connection
Connection of the DC inputs
Number of modules per string n
1
=n
2
, n
3
=n
4
P
max
per string < 6 kW
MPP trackers A+B together < 12 kW
I
max
< 18.6 A per tracker
