Xantrex Technology PV-225208 PV Over-Current Fault S, DC Bus Voltage High H

SECTION 5

TROUBLESHOOTING

Pins 1 and 3 are correct, the CT may be damaged.

Clear the fault and restart the PCU. If the fault is sustained contact your Xantrex Technology distributor for assistance or service.

0828 – PV Over-Current Fault (S)

Current through the PV CT has exceeded the allowable limit.

Possible causes:

•PV system wiring short: Inspect the PV power system for short circuits.

•PCU Power Supply is defective: Verify +/-15Vdc sources, referenced to analog ground, on the

PCU. There are labeled test points on the PCU circuit board. Note: There are two isolated +15Vdc power supplies labeled +15Vdc and +15Vdc Drv. The +15Vdc Drv power supply provides power for the matrix driver boards only.

•Faulty CT wiring: Verify the wiring between the PCU and the CT is properly connected and undam- aged. Refer to the system schematic in Section 7.

•CT defective: Locate the current transducer for the PV leg in question (see control components drawing in Section 7). With a digital multi-meter measure the voltage from CT pins 1, 2, and 3 to chassis ground. Pins 1 and 3 should read approximately +15 and -15Vdc respectively. These volt- ages are sourced directly from the PCU. Pin 2 should read less than 20mV when no current is passing through the CT window. If Pin 2 reads greater than 20mV, and the supply voltages are on Pins 1 and 3 are correct, the CT may be damaged

Clear the fault and restart the PCU. If the fault is sustained contact your Xantrex Technology distributor for assistance or service.

8021 - DC Bus Voltage High (H)

The DC Bus voltage has exceeded the maximum allowable limit.

This fault is generally transient in nature. Clear the fault and attempt to restart the PV-225208.

DOCUMENT: 151811	PV-225208 Photovoltaic Inverter	5-5
	Operation and Maintenance Manual

Copyright 2003, Xantrex Technology Inc.