5 Wiring; Preparation Before Wiring - Delta RPI H3A Operation And Installation Manual

5 Wiring

5.1 Preparation before Wiring

1. Ensure voltage values and polarities are correct.
2. When grounding the solar array, an isolation transformer is required due to the
RPI H3A / H4A /H5A not having galvanic isolation between the DC-input and AC-output.
3. The ground fault detection is a fixed internal setting. It cannot be modified.
4. Whole system wiring can be seen in Figure 5-1 and Figure 5-2.
5. Please refer to Figure 5-1 for connections. Inverter can accept DC inputs in parallel
(2 MPP trackers/ 2 parallel input).
Figure 5-1: Connection of a system for floating solar array
PV Array
AC Wiring
1
3
Distribution box
2
Communication
Wiring
17
DC Wiring
Parallel or
Separate
Wiring