4.1
Start-up and Test, continued
4.1.3 Standby Operation
Perform the following procedure after successful completion of a self test with the
XM2-300HP operating normally in AC line mode.
Momentarily fail the AC utility input power by switching the AC (service
1.
disconnect) circuit breaker to OFF.
The XM2-300HP starts operating in the inverter mode. Use the Smart Display or
2.
a true RMS voltmeter to verify output. Output voltages should appear within ±5%
of: 87Vac for 90V units, 63Vac for CE units, and 60Vac for 60V units at nominal
line input voltage.
Return the XM2-300HP to AC Line mode by switching the AC (service
3.
disconnect) circuit breaker to ON. The transfer back to utility power may take 10
to 50 seconds for the utility voltage and frequency to stabilize, and the module’s
phase-lock circuitry to activate. The module then synchronizes the inverter
waveform and inverter before initiating a smooth, in-phase transfer back to utility
power. Once the transfer is complete, the Smart Display reports: OPER MODE =
LINE.
The XM2-300HP is now fully operational.
34
017-877-B1-001 Rev. A
