GE c60 Instruction Manual page 274

SYSTEM SETUP
PMU 1 VOLT TRIGGER LOW-VOLT
source. 1 pu is a nominal voltage value defined as the nominal secondary voltage times VT ratio. The comparator applies a
1% hysteresis.
PMU 1 VOLT TRIGGER HIGH-VOLT
source. 1 pu is a nominal voltage value defined as the nominal secondary voltage times VT ratio. The comparator applies a
1% hysteresis.
PMU 1 VOLT TRIGGER PKP TIME
PMU 1 VOLT TRIGGER DPO TIME
when using the recorder in the forced mode (recording as long as the triggering condition is asserted).
Current triggering
5
SETTINGS  SYSTEM SETUP  PHASOR MEASUREMENT UNIT  PHASOR MEASUREMENT UNIT 1(2)  PMU 1(2)
TRIGGERING  PMU 1(2) CURRENT TRIGGER
 PMU 1 CURRENT
 TRIGGER
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 can trigger the recorder.
PMU 1 CURR TRIGGER PICKUP
value of 1 pu is a nominal primary current. The comparator applies a 3% hysteresis.
PMU 1 CURR TRIGGER PKP TIME
PMU 1 CURR TRIGGER DPO TIME
importance when using the recorder in the forced mode (recording as long as the triggering condition is asserted).
5-148
— Specifies the low threshold for the abnormal voltage trigger, in per-unit of the PMU
— Specifies the high threshold for the abnormal voltage trigger, in per-unit of the PMU
— Use to filter out spurious conditions and avoid unnecessary triggering of the recorder.
— Use to extend the trigger after the situation returns to normal. This setting is of importance
Figure 5-71: Voltage trigger logic
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
— Specifies the pickup threshold for the overcurrent trigger, in per unit of the PMU source. A
— Use to filter out spurious conditions and avoid unnecessary triggering of the recorder.
— Use to extend the trigger after the situation returns to normal. This setting is of
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
C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS