Raritan PX3TS, User Manual

Page: 198 / 842

Chapter 6: Using the Web Interface
174
Power Quality Settings
Inlet power quality state (normal/warning/critical) is derived from the
inlet's voltage and frequency quality - whichever is lower. If voltage or
frequency is critical, power quality is critical. If either is warning, quality
is warning. When both are normal, power quality is normal.
PX3TS transfers to standby operation when preferred inlet power quality
goes critical and retransfers to normal operation when power quality
returns to normal. The warning state does not cause transfers and is
intended as an early warning indication of a possible problem.
When quality goes from better to worse, the state change is said to
assert. You configure how long the quality must remain in the worse
state before the state change actually occurs. When quality goes from
worse to better, the state change is said to deassert. You configure the
hysteresis - how much the quality must be better than the threshold -
before the state change occurs.
To configure power quality thresholds for both inlets:
1. Choose Transfer Switch > Edit Power Quality Parameters. See
Transfer Switch (on page 162).
2. Both voltage and frequency thresholds are shown onscreen. The
ways to configure them are identical.