SECTION 5
TROUBLESHOOTING
DOCUMENT: 151710
PV-45208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2002, Xantrex Technology Inc.
5-3
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 less than
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-45208 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).
