GE Multilin g60 Instruction Manual page 260

5.4 SYSTEM SETUP
• PMU 1 FREQ TRIGGER HIGH-FREQ: This setting specifies the high threshold for the abnormal frequency trigger. The
comparator applies a 0.03 Hz hysteresis.
• PMU 1 FREQ TRIGGER PKP TIME: This setting could be used to filter out spurious conditions and avoid unnecessary
triggering of the recorder.
• PMU 1 FREQ 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).
SETTINGS
PMU 1 FREQ TRIGGER
FUNCTION:
Enabled = 1
PMU 1 FREQ TRIG BLK:
Off = 0
SETTING
PMU 1 SIGNAL
SOURCE:
FREQUENCY, f
5
h) VOLTAGE TRIGGERING

PATH: SETTINGS SYSTEM SETUP
 PMU 1 VOLTAGE
 TRIGGER
This element responds to abnormal voltage. Separate thresholds are provided for low and high voltage. In terms of signal-
ing its operation, the element does not differentiate between the undervoltage and overvoltage events. The trigger
responds to the phase voltage signal of the phasor measurement unit (PMU) source. All voltage channels (A, B, and C or
AB, BC, and CA) are processed independently and could trigger the recorder. A minimum voltage supervision of 0.1 pu is
implemented to prevent pickup on a de-energized circuit, similarly to the undervoltage protection element.
5-100
SETTINGS
PMU 1 FREQ TRIGGER LOW-FREQ:
PMU 1 FREQ TRIGGER HIGH-FREQ:
RUN
0< f < LOW-FREQ
OR
f > HIGH-FREQ
Figure 5–36: FREQUENCY TRIGGER SCHEME LOGIC

PHASOR MEASUREMENT...
PMU 1 VOLT TRIGGER
FUNCTION: Disabled
PMU 1 VOLT TRIGGER
MESSAGE
LOW-VOLT: 0.800 pu
PMU 1 VOLT TRIGGER
MESSAGE
HIGH-VOLT: 1.200 pu
PMU 1 VOLT TRIGGER
MESSAGE
PKP TIME: 0.10 s
PMU 1 VOLT TRIGGER
MESSAGE
DPO TIME: 1.00 s
PMU 1 VOLT TRIG BLK:
MESSAGE
Off
PMU 1 VOLT TRIGGER
MESSAGE
TARGET: Self-Reset
PMU 1 VOLT TRIGGER
MESSAGE
EVENTS: Disabled
G60 Generator Protection System
FLEXLOGIC OPERANDS
PMU 1 VOLT TRIGGER
PMU 1 CURR TRIGGER
PMU 1 POWER TRIGGER
PMU 1 ROCOF TRIGGER
SETTING
PMU 1 USER TRIGGER:
Off = 0
SETTINGS
PMU 1 FREQ TRIGGER PKP TIME:
PMU 1 FREQ TRIGGER DPO TIME:
t
PKP
t
DPO
 
PMU 1 TRIGGERING PMU 1 VOLTAGE TRIGGER
Range: Enabled, Disabled
Range: 0.250 to 1.250 pu in steps of 0.001
Range: 0.750 to 1.750 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
FLEXLOGIC OPERAND
PMU 1 TRIGGERED
to STAT bits of
the data frame
FLEXLOGIC OPERAND
PMU 1 FREQ TRIGGER
847002A2.CDR
GE Multilin