SECTION 3
INSTALLATION AND INITIAL TURN-ON
PV-45208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2002, Xantrex Technology Inc.
DOCUMENT: 151710
3-7
Visual Inspection, PV Array Wiring
•
Verify the PV+, PV-, PV neutral (if array is bipolar), and PV
safety ground are isolated from each other. Refer to system
schematic in Section 7.
•
Verify PV array is properly grounded. Refer to previous sec-
tion on PV array grounding.
•
Verify all PV fuses are installed (if present).
•
Verify PV string diodes are wired properly (if present).
•
Verify proper PV voltage polarity at the PV string discon-
nect/combiner boxes.
Initial Power
•
Close the isolation transformer circuit breaker.
•
Verify 208 VAC voltage across the AC disconnect.
•
Close the AC disconnect (if present).
•
With the DC disconnect switch open (if present), close one
of the PV array string disconnect devices.
•
Carefully measure VDC at the PV disconnect switch. The
value should be the same as at the PV array string disconnect
device. It should also be positive.
INITIAL TURN ON PROCEDURE
The following must be performed by an approved Technician:
The following procedures are intended to verify correct installation and proper operation of the PV-
45208. These steps are to be followed sequentially. Do not continue if any of the steps or results are
unclear. Refer to Section 4 for a detailed description of system operation. Refer to Section 5 for fault
condition descriptions and troubleshooting. Refer to Section 7 for detailed system schematics.
Visual Inspection, Isolation Transformer WYE/WYE
•
Verify the isolation transformer circuit breaker is open.
•
Remove the isolation transformer access panel.
•
Insure the neutral on the inverter side of the isolation transformer is left floating.
If the inverter
side neutral is tied to ground, the inverter will not function properly.
Also, insure that the
neutral is not bonded to the isolation transformer frame.
•
Verify the inverter 208 VAC conductors are connected to the isolation transformer.
•
Verify the utility conductors are properly connected to the isolation transformer.
Visual Inspection, PV-45208
•
Insure AC and DC disconnect switches are opened (if present).
•
Insure PV array string disconnect switches are opened (if present).
•
Open the upper and lower enclosure access panels.
•
Verify all wire connections are tight.
•
Inspect the cables between the lower enclosure terminal blocks and the upper enclosure matrix and
driver board. All wire harnesses should be snap-locked into their respective PCB headers.
DC TERMINAL
