GE N60 Instruction Manual page 246

5.4 SYSTEM SETUP
• PMU 1 CURR TRIGGER PICKUP: This setting specifies the pickup threshold for the overcurrent trigger, in per unit of
the PMU source. A value of 1 pu is a nominal primary current. The comparator applies a 3% hysteresis.
• PMU 1 CURR TRIGGER PKP TIME: This setting can be used to filter out spurious conditions and avoid unnecessary
triggering of the recorder.
• PMU 1 CURR TRIGGER DPO TIME: This setting can be used to extend the trigger after the situation returned to nor-
mal. This setting is of particular importance when using the recorder in the forced mode (recording as long as the trig-
gering condition is asserted).
5
i) POWER TRIGGERING

PATH: SETTINGS SYSTEM SETUP
 PMU 1 POWER
 TRIGGER
This element responds to abnormal power. Separate thresholds are provided for active, reactive, and apparent powers. In
terms of signaling its operation the element does not differentiate between the three types of power. The trigger responds to
the single-phase and three-phase power signals of the phasor measurement unit (PMU) source.
• PMU 1 POWER TRIGGER ACTIVE: This setting specifies the pickup threshold for the active power of the source. For
single-phase power, 1 pu is a product of 1 pu voltage and 1 pu current, or the product of nominal secondary voltage,
the VT ratio and the nominal primary current. For the three-phase power, 1 pu is three times that for a single-phase
power. The comparator applies a 3% hysteresis.
5-128
Figure 5–40: CURRENT TRIGGER SCHEME LOGIC

PHASOR MEASUREMENT...
PMU 1 POWER TRIGGER
FUNCTION: Disabled
PMU 1 POWER TRIGGER
MESSAGE
ACTIVE: 1.250 pu
PMU 1 POWER TRIGGER
MESSAGE
REACTIVE: 1.250 pu
PMU 1 POWER TRIGGER
MESSAGE
APPARENT: 1.250 pu
PMU 1 POWER TRIGGER
MESSAGE
PKP TIME: 0.10 s
PMU 1 POWER TRIGGER
MESSAGE
DPO TIME: 1.00 s
PMU 1 PWR TRIG BLK:
MESSAGE
Off
PMU 1 POWER TRIGGER
MESSAGE
TARGET: Self-Reset
PMU 1 POWER TRIGGER
MESSAGE
EVENTS: Disabled
N60 Network Stability and Synchrophasor Measurement System
 
PMU 1(6) TRIGGERING
Range: Enabled, Disabled
Range: 0.250 to 3.000 pu in steps of 0.001
Range: 0.250 to 3.000 pu in steps of 0.001
Range: 0.250 to 3.000 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: FlexLogic operand
Range: Self-Reset, Latched, Disabled
Range: Enabled, Disabled
5 SETTINGS
PMU 1(6) POWER TRIGGER
GE Multilin