Power Quality Settings - LEGRAND Raritan PX3TS User Manual

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
Switch (on page 193).
2. Both voltage and frequency thresholds are shown onscreen. The ways to
configure them are identical.
▪
Enter upper and lower thresholds for Warning and Critical power
quality states.
Chapter 7: Using the Web Interface
Transfer
205