Connecting the DC Wiring
975-0466-01-01 3–5
3. Connect the POSITIVE (+) wire from the #1 PV string to a GT Inverter PV
positive (+) quick connect.
4. Connect the NEGATIVE (–) wire from the #1 PV string to a GT Inverter PV
negative (–) quick connect.
5. If necessary, repeat for the #2 or (for GT5.0-AU) #3 PV string. Double check
that the wires are in the proper locations.
If only one PV string connection is used, cover the unused PV quick connects
with the seals provided.
CAUTION: Equipment damage
Before connecting the PV array to the inverter, check to ensure correct polarity and that
the voltage between the positive (+) and negative (–) terminals is below 600 Vdc
(U
PV
≤600 Vdc).
To check the PV array DC voltage:
1. Uncover the PV arrays and expose them to full sunlight. The sunlight must be intense
enough to produce the required output voltage.
2. Measure the PV array open circuit DC voltage across the DC positive (+) and negative
(–) terminals of the string combiner. This voltage must be less than 600 Vdc. Voltage over
600 Vdc will damage the inverter.
3. Cover the PV arrays with an opaque material again.
Figure 3-3
DC Connections for a Two-String PV Array
Important:
Depending upon installation and local codes, fusing and/or a combiner
box may be required. The installer must provide this equipment.
PV Array
PV String #1
PV String #2
+
+
–
–
Xantrex GT Inverter
To Next Page
Loading...
