GE L90 Instruction Manual page 241

5 SETTINGS
SETTINGS
PMU 1 VOLT TRIGGER
FUNCTION:
Enabled = 1
PMU 1 VOLT TRIG BLK:
Off = 0
SETTINGS
PMU 1 SIGNAL
SOURCE:
VT CONNECTION:
WYE DELTA
VA VAB
VB VBC
VC VCA
h) CURRENT TRIGGERING

PATH: SETTINGS SYSTEM SETUP
 PMU 1 CURRENT
 TRIGGER
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
This element responds to elevated current. The trigger responds to the phase current signal of the phasor measurement
unit (PMU) source. All current channel (A, B, and C) are processed independently and could trigger the recorder.
• 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 could be used to filter out spurious conditions and avoid unneces-
sary triggering of the recorder.
• PMU 1 CURR TRIGGER DPO TIME: This setting could 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).
GE Multilin
SETTINGS
PMU 1 VOLT TRIGGER LOW-VOLT:
PMU 1 VOLT TRIGGER HIGH-VOLT:
RUN
(0.1pu < V < LOW-VOLT) OR
(V > HIGH-VOLT)
(0.1pu < V < LOW-VOLT) OR
(V > HIGH-VOLT)
(0.1pu < V < LOW-VOLT) OR
(V > HIGH-VOLT)
Figure 5–43: VOLTAGE TRIGGER SCHEME LOGIC

PHASOR MEASUREMENT...
PMU 1 CURR TRIGGER
FUNCTION: Disabled
PMU 1 CURR TRIGGER
PICKUP: 1.800 pu
PMU 1 CURR TRIGGER
PKP TIME: 0.10 s
PMU 1 CURR TRIGGER
DPO TIME: 1.00 s
PMU 1 CURR TRIG BLK:
Off
PMU 1 CURR TRIGGER
TARGET: Self-Reset
PMU 1 CURR TRIGGER
EVENTS: Disabled
L90 Line Current Differential System
FLEXLOGIC OPERANDS
PMU 1 FREQ TRIGGER
PMU 1 CURR TRIGGER
PMU 1 POWER TRIGGER
PMU 1 ROCOF TRIGGER
SETTING
PMU 1 USER TRIGGER:
Off = 0
SETTINGS
PMU 1 VOLT TRIGGER PKP TIME:
PMU 1 VOLT TRIGGER DPO TIME:
t
PKP
t
DPO
 
PMU 1 TRIGGERING PMU 1 CURRENT TRIGGER
Range: Enabled, Disabled
Range: 0.100 to 30.000 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
5.4 SYSTEM SETUP
FLEXLOGIC OPERAND
PMU 1 TRIGGERED
to STAT bits of
the data frame
FLEXLOGIC OPERAND
PMU 1 VOLT TRIGGER
847005A1.CDR
5
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