Xantrex Technology PV-30208 Section Troubleshooting, AC Line Voltage Low Fault

SECTION 5

TROUBLESHOOTING

when the contactor closes. Carefully check voltage at the K1-N.O. aux. contact to the ground bus when the contactor is closed. (See schematic in Section 7).

(2) AC Line Voltage Low Fault (0x0100)

The utility AC voltage fell below the minimum programmed limit. There are two levels of response to low line voltage conditions. The first level of response is set to 183.0 VAC with a time delay of 2 seconds. By default, the second level is set to 104 VAC with a time delay of less than 0.1 seconds. Voltage setpoints may be modified via the operator interface program. Utility protection setpoints may only be adjusted by trained personnel with approval by both the local utility and the equipment owner.

Possible causes:

•The utility voltage fell below the allowable limit (183.0 VAC by default). Verify the utility voltage is stable and within allowable operating limits.

•There is a problem with one or more of the AC sense wires (see system schematic in Section 7).

This fault is auto-resetting. The unit will automatically restart after line has stabilized within normal limits for 5 minutes.

(3) AC Line Voltage High Fault (0x0200)

The utility AC voltage exceeded the maximum-programmed limit. There are two levels of response to high line voltage conditions. The first level of response is set to 228.8 VAC with a time delay of less than 2 seconds. By default, the second level is set to 285.0 VAC with a time delay of less than 2 cycles, and is not field adjustable. Voltage setpoints may be modified via the operator interface program. Utility protection setpoints may only be adjusted by trained personnel with approval by both the local utility and the equipment owner.

Possible causes:

•The utility voltage exceeded the allowable limit (228.8 VAC by default). Verify the utility voltage is stable and within allowable operating limits.

•There is a problem with one or more of the AC sense wires (see system schematic in Section 7).

The fault is auto-resetting. The unit will automatically restart after line has stabilized within normal limits for 5 minutes.

(4) AC Line Under Frequency Fault (0x0400)

The AC utility frequency fell below the minimum programmed limit. This limit is set to 59.5 Hz and the system response time limit is set to less than 0.1 seconds to insure the PV-30208 disconnects from the utility within the time allowed by UL1741. Frequency setpoints may be modified via the operator inter- face program. Utility protection setpoints may only be adjusted by trained personnel with approval by both the local utility and the equipment owner.

Possible causes:

•The utility frequency fell below the allowable limit (59.5 Hz by default). Verify the utility frequency is stable and within allowable operating limits.

•There is a problem with one or more of the AC sense wires (see system schematic in Section 7).

DOCUMENT: 151315PV-30208 Photovoltaic Inverter5-3

Operation and Maintenance Manual

Copyright 2003, Xantrex Technology Inc.