SECTION 3
INSTALLATION AND INITIAL TURN-ON
PV-45208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2002, Xantrex Technology Inc.
DOCUMENT: 151710
3-5
The following wires for connecting the PV-45208 to external devices are not provided by Xantrex
Technology: (See wiring diagram on page 3-6.)
•
3-Phase 208 VAC inverter output to terminals of the 208 VAC primary side of isolation trans-
former.
The neutral must be left floating. Ground loops will exist when the inverter starts
switching, which will cause the inverter to shut down due to phase over-currents and will
result in damage to the PV-45208. Also, insure that this neutral is not bonded to the isola-
tion transformer frame.
•
System electrical ground to the isolation transformer chassis ground.
•
Isolation transformer grid side terminals to line circuit breaker (or the AC disconnect switch if
present).
•
PV frame ground to PV-45208 enclosure chassis ground stud.
•
PV-45208 enclosure chassis ground stud to the electrical distribution system ground.
•
PV+ to the inverter enclosure terminal block TBDC+.
•
PV- to the inverter enclosure terminal block TBDC-.
•
PV neutral if connecting a bipolar PV array.
Install all wires listed above. Refer to the following wiring diagram and the system schematics in
Section 7 for more detailed terminal locations.