Xantrex Technology PV-225208 important safety instructions System Verification

SECTION 3

INSTALLATION AND INITIAL TURN-ON

(+) terminal. The value should be the same as at the PV array string disconnect switch. It should also be positive.

•Open all PV string disconnect switches.

•Close the isolation transformer circuit breaker.

•Verify 208 VAC voltage across the AC disconnect switch. If a phase rotation meter is available, verify proper phase rotation at the AC disconnect switch.

•Close the AC disconnect switch.

•Verify 208 VAC voltage across the AC line fuses F1-3.

System Verification

•Upon applying 208 VAC power to the PV-225208, observe the operator interface panel. After approxi- mately 15 seconds, the panel should finish initialization and will probably report a fault condition.

•Remedy any faults reported. To clear a fault condition, press the <ENTER> key twice. If the fault message does not change, the fault condition is still present. Most likely, any faults seen at this point will be related to PV-225208 safety switches. To disable the door interlock switch with the main enclosure door opened, pull the switch shaft out. It will lock in its ‘maintenance’ position. Once all faults are cleared the system will read ‘Sleeping’or ‘Keyswitch Disable’depending on the position of the On/Off switch. To re-enable interlock, push the shaft in and close the door.

•Scroll up the menu until ‘Enter Read Parameter:’ is displayed.

•Press <Enter>, then <19>. This is line voltage frequency being read by the PCU. It should read 60.0 +0.5, -0.7.

•Verify the On/Off switch is in the ‘Off’ position.

•Close the PV array string disconnect switches.

•Close the PV-225208 DC disconnect switch.

•Press <F2> on the operator interface panel. If the PV voltage is above the PV Start Voltage setpoint, the second line should read ‘Waking Up’. Once the PV Start Time is exceeded, the PV-225208 should transition to ‘Power Tracking’.

•The power tracker was previously limited to 25% of PV-225208 rated power. Once the PV-225208 has stabilized operation (approximately 20 seconds), scroll through the main operator interface panel menu. Verify all phase voltages and currents are closely balanced.

•Scroll to ‘Enter Read Parameter:’ Press <ENTER> then <17> <ENTER> to view ground fault current value. This value should be equal to or very close to zero. Continue to monitor this value as the PV-225208 is commanded to higher power levels.

•Enter the write parameter menu and increase the ‘I PPT Max %’ to 50. Exit the write parameter menu and verify all operating values are proper.

•Continue to increment ‘I PPT Max %’to 100. Depending upon solar conditions, the PV-225208 may not operate at full power. If the PV array is not experiencing full sun, the PV maximum power tracker will regulate the PV voltage to maintain maximum PV power output. To determine if the PV-225208 has reached it’s maximum power output, enter <20> at the ‘Enter Read Parameter:’‘0’means the PV-225208 has not reached maximum power, contrarily, ‘1’means the PV-225208 has reached maximum power and executed the modified peak power tracker to limit output power.

•The PV-225208 is now fully operational.

DOCUMENT: 151811 PV-225208 Photovoltaic Inverter 3-7

Operation and Maintenance Manual

Copyright 2003, Xantrex Technology Inc.