TrippLite Frequency Fail
3 months ago
26
Tripp Lite Smart 1500 LCD, Frequency output while on battery = fail
This UPS failed during a recent outage, ie turned off instead of powering my one NAS from the battery. Outage lasted ~6 minutes.
After repeatedly attempting to reproduce the failure. I connected my oscilloscope to the unit while on battery and found the frequency to be ~119hz instead of the expected 60hz.
Similar tests with an inexpensive multimeter showed approx. 180hz.
Voltage shows ~117.
Connected a desk fan to the power supply, and in this video you can see/hear it slow down dramatically, when the UPS is switched to battery.
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