Xantrex GT2.8-AU-QC-230, Owner'S Manual

Page: 42 / 90

Wiring the Inverter
3–4 975-0466-01-01
When installing the DC fuses, the two positive PV wires must be relocated from
their factory-installed connection points to the connection points in line with the
DC fuse clips. See Figure 3-2.
The DC interconnect board is inside the GT Inverter wiring compartment. To
access the wiring compartment, remove the inverter front panel. It is held in place
by four screws—two along the bottom and two on the front of the inverter.
Connecting the PV Array
The following procedure is illustrated in Figure 3-3. If there will be more than one
PV string, label the positive and negative wire pairs appropriately (for example:
PV 1, PV 2).
GT5.0-AU models are factory configured to accept two PV strings. To connect a
third PV string, relocate the two positive internal DC wires from their
factory-installed connection points to connection points in line with the DC fuse
clips, and install DC fuses as specified in “DC Fuses (GT5.0-AU Model Only for
Three PV Strings)” on page 3–3. See Figure 3-2.
To wire the PV array to the GT Inverter:
1. If necessary, install DC conduit from the PV string(s) to the GT Inverter.
2. Terminate the wires coming from the PV string(s) with appropriate
Multi-Contact connectors.
WARNING
Make sure all PV and AC wiring is disconnected from the inverter before accessing or
replacing the fuses or making the following wiring changes.
Figure 3-2 GT5.0-AU DC Fuse Installation
GT5.0-AU DC interconnect board
with factory-installed wiring for two
strings. GT5.0-AU DC Interconnect Board with positive
PV wiring reconfigured and with DC fuses
installed, for three strings.
When connecting
three PV strings,
positive wires must
be relocated and
fuses installed.