CHAPTER 4: PROGRAMMING S4 ALARMS/CONTROL
PQM POWER QUALITY METER – INSTRUCTION MANUAL 4–53
• 3Φ POSITIVE REAL POWER DEMAND RELAY: Three-phase positive real power demand
detection can either be disabled or used as an alarm or process control. Set this
setpoint to OFF if the feature is not required. Selecting ALARM activates the alarm
relay and displays an alarm message whenever the three-phase real power demand
level is equalled or exceeded. Selecting AUX1, AUX2 or AUX3 activates the respective
auxiliary relay with no message displayed. This is intended for process control.
• 3Φ POSITIVE REAL POWER DEMAND LEVEL: When the three-phase real power
demand exceeds this setpoint, a three-phase positive real power demand alarm or
process control indication will occur.
• 3Φ POSITIVE REACTIVE POWER DEMAND RELAY: Three-phase positive reactive power
demand detection can either be disabled or used as an alarm or process control. Set
to OFF if this feature is not required. Selecting ALARM activates the alarm relay and
displays an alarm message whenever the three-phase reactive power demand level is
equalled or exceeded. Selecting AUX1, AUX2, or AUX3 activates the respective
auxiliary relay with no message displayed. This is intended for process control.
• 3Φ POSITIVE REACTIVE POWER DEMAND LEVEL: When the three-phase reactive
power demand equals or exceeds this setpoint, a three-phase positive reactive power
demand alarm or process control indication will occur.
• 3Φ NEGATIVE REAL POWER DEMAND RELAY: Three-phase negative real power
demand detection can be disabled or used as an alarm or process control. Set to OFF
if this feature is not required. Selecting ALARM activates the alarm relay and displays
an alarm message whenever the level of the negative three-phase real power
demand is equalled or exceeded. Selecting AUX1, AUX2 or AUX3 activates the
respective auxiliary relay with no message displayed. This is intended for process
control.
• 3Φ NEGATIVE REAL POWER DEMAND LEVEL: When the three-phase real power
demand is negative and exceeds this setpoint, a three-phase negative real power
demand alarm or process control indication will occur.
• 3Φ NEGATIVE REACTIVE POWER DEMAND RELAY: Three-phase negative reactive
power demand detection can be disabled or used as an alarm or process control. Set
to OFF if this feature is not required. Selecting ALARM activates the alarm relay and
displays an alarm message if the level of the negative three-phase reactive power
demand is equalled or exceeded. Selecting AUX1, AUX2 or AUX3 activates the
respective auxiliary relay with no message displayed (intended for process control).
• 3Φ NEGATIVE REACTIVE POWER DEMAND LEVEL: If the three-phase reactive power
demand is negative and equals or exceeds this setpoint, a three-phase negative
reactive power demand alarm or process control indication will occur.
• 3Φ APPARENT POWER DEMAND RELAY: Three-phase apparent power demand
detection can be disabled or used as an alarm or process control. Set to OFF if this
feature is not required. Selecting ALARM activates the alarm relay and displays an
alarm message if the three-phase apparent power demand level is equalled or
exceeded. Selecting AUX1, AUX2 or AUX3 activates the respective auxiliary relay with
no message displayed. This is intended for process control.
• 3Φ APPARENT POWER DEMAND LEVEL: When the three-phase apparent power
demand equals or exceeds this setpoint, a three-phase apparent power alarm or
process control indication will occur.
Courtesy of NationalSwitchgear.com
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