SECTION 3
INSTALLATION AND INITIAL TURN-ON
PV-225208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2003, Xantrex Technology Inc.
DOCUMENT: 151811
3-6
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-225208.
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.
•
If a phase rotation meter is available, verify proper phase rotation at the line side of the isolation
transformer circuit breaker.
•
Insure the neutral on the inverter side 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.
•
If the wires are marked, verify they follow the sequence on the line side of the isolation transformer
and circuit breaker.
•
Verify the utility conductors are properly connected to the isolation transformer.
Visual Inspection, PV-225208
•
Insure AC and DC disconnect switches are opened.
•
Remove the front cover from the inductor enclosure, open the door of the main enclosure, and
disconnect enclosures and inspect.
•
Verify all wire connections are tight.
•
Inspect the fiber optic cables between the PCU and the matrix driver boards. All fibers should be
snap-locked into their respective receivers/transmitters.
•
Insure all connector jack screws on the PCU and matrix driver board are tight.
•
Verify AC phase connections landed at the AC interface enclosure.
Visual Inspection, PV Array Wiring
•
Verify the PV+, PV-, and PV safety ground are isolated from each other. The safety ground must not
be tied to PV-.
•
Verify all PV fuses are installed.
Initial Power
•
Turn the On/Off switch, located on the front door to off.
•
With the DC disconnect switch opened, close one of the PV array string disconnect switches.
•
Carefully measure VDC across the PV +/- terminal block. The value should be the same as at the
PV array string disconnect switch. It should also be positive.
•
Close the PV disconnect switch.
•
Carefully measure VDC between the DC contactor negative (-) terminal and the DC switch positive
