© 2001 Xantrex Technology Inc. All Rights Reserved.
P/N 975-0013-01-01 Rev B 10/01
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3.0 OPERATION
Operating Stacked Inverters
Stacked inverters must operate together in order to provide the 120/240 VAC to the loads. The Series Stacking
Interface cable ensures the output from each inverter is 180 degrees out-of-phase for operating 240 VAC loads.
NOTE: Until the units are tested, do no connect loads to the inverters 120 or 240 VAC output.
Start-up and Test
1.
Ensure the main service panel’s circuit breakers feeding the inverters are OFF.
2.
Switch ON both inverters. The inverter should be providing 120/240 VAC to the sub-panel.
3.
Use an AC voltmeter and measure the voltage between the L1 terminal and neutral bus in the sub-panel.
This voltage should be 120 VAC (± 3%).
4.
Measure the voltage between the L2 terminal and neutral bus in the sub-panel. This voltage should be 120
VAC (± 3%).
5.
Measure the voltage between the L1 and L2 terminals in the sub-panel. This voltage should be 240 VAC (±
3%).
6.
Switch ON the main service panel’s circuit breakers feeding the inverters.
7.
Verify the inverters are charging the batteries and powering the sub-panel (refer to the operator’s manual).
8.
Switch both inverters OFF.
9.
Replace all covers and panels on the inverters and sub-panel.
The stacked inverter system is now ready for use.
NOTE: If the inverters are not operating properly, please refer to the operator’s manual for
setup and troubleshooting information.
