37 | UPStealth® 2 User Manual
STATUS
SETTINGS
POWER FAIL THRESHOLDS
Description:
Use this screen to configure various power fail criteria, including minimum utility voltage, maximum utility voltage, sensitivity
level to utility power fluctuations from ideal power, and the minimum length of time that utility power quality must be within
acceptable power quality parameters before the UPStealth 2 UPS 1000W unit comes out of backup mode.
On The Display:
•
SET LOW THRESHOLD:
Allows you to specify the minimum utility AC voltage threshold. If utility voltage goes below this
threshold, the UPStealth 2 will switch to battery power.
•
SET HIGH THRESHOLD:
Allows you to specify the maximum utility AC voltage threshold. If utility voltage goes above this
threshold, the UPStealth 2 will switch to battery power.
•
ENHANCED SENSITIVITY:
When choosing this mode, the captured incoming utility AC waveform is compared to a reference
true sine wave. The effect of this is an increased sensitivity of the oscilloscope function to deviations of the incoming utility
AC waveform from programmed thresholds (user programmed and default thresholds).
•
SET LINE QUALIFY TIME:
Allows you to select the amount of time utility power must be within quality parameters before the
UPStealth 2 switches from battery back to utility power. This protects your equipment from rapid power cycling, noisy power,
or power frequency mismatches after a utility power failure.
Set Power Fail Thresholds
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