Xantrex Technology PV-30208 Visual Inspection, Isolation Transformer WYE/WYE, Initial Power

SECTION 3

INSTALLATION AND INITIAL TURN-ON

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- 30208. 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. The transformer neutral must not be connected to the utility side neutral, the transformer chassis, or ground. 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-30208

•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.

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.

DC TERMINAL

DOCUMENT: 151315PV-30208 Photovoltaic Inverter3-7

Operation and Maintenance Manual

Copyright 2003, Xantrex Technology Inc.