CHAPTER 4: KEYPAD SETPOINTS S8 POWER ELEMENTS
369 MOTOR MANAGEMENT RELAY – QUICKSTART GUIDE 4–47
4.6.7 Reverse Power
PATH: S8 POWER ELEMENTS ØØØØØØ REVERSE POWER
If enabled, once the magnitude of three-phase total real power exceeds the pickup level in
the reverse direction (negative kW) for a period of time specified by the delay, a trip or
alarm will occur.
Note
The minimum power measurement magnitude is determined by the phase CT
minimum of 5% rated CT primary. If the reverse power level is set below this, a trip or
alarm will only occur once the phase current exceeds the 5% cutoff.
REVERSE POWER BLOCK REVERSE POWER
FROM START: 1 s
Range: 0 to 50000 s in steps of 1
REVERSE POWER
ALARM: Off
Range: Off, Latched, Unlatched
ASSIGN ALARM RELAYS:
Alarm
Range: None, Alarm, Aux1, Aux2, or combination
REVERSE POWER ALARM
LEVEL: 1 kW
Range: 1 to 25000 kW in steps of 1
REVERSE POWER
ALARM DELAY: 1.0 s
Range: 0.5 to 30.0 s in steps of 0.5
REVERSE POWER
ALARM EVENTS: Off
Range: Off, On
REVERSE POWER
TRIP: Off
Range: Off, Latched, Unlatched
ASSIGN TRIP RELAYS:
Trip
Range: None, Trip, Aux1, Aux2, or combinations
REVERSE POWER TRIP
LEVEL: 1 kW
Range: 1 to 25000 kW in steps of 1
REVERSE POWER
TRIP DELAY: 1.0 s
Range: 0.5 to 30 s in steps of 0.5
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