Xtreme Power Conversion P91 - 9 Appendix; 9.1 Reference Waveforms

Xtreme Power Conversion Corporaon
P91, TX91, TX91L, TXVR Service Manual
Page 29
Uninterrupble Power Supply
9. Appendix
9.1 Reference Waveforms
Below are some waveform charts to show normal UPS operaon. It’s a very useful reference to verify the test
result in secon 8.
CH1: IP SCR driver
CH2: IP voltage
CH3: -BUS voltage
CH4: +BUS voltage
Figure 9.1 Switch on the input breaker without turn on