GE c60 Instruction Manual page 277

CHAPTER 5: SETTINGS
SETTINGS
PMU 1 df/dt TRIGGER
FUNCTION:
Enabled = 1
PMU 1 df/dt TRG BLK:
Off = 0
SETTING
PMU 1 SIGNAL
SOURCE:
ROCOF, df/dt
5.5.7.12 PMU recording
SETTINGS  SYSTEM SETUP  PHASOR MEASUREMENT UNIT  PHASOR MEASUREMENT UNIT 1(2) 
RECORDING PMU 1(2)
 PMU 1
 RECORDING
— This setting enables or disables the recorder for PMU 1. The rate is fixed at the reporting rate set within
PMU 1 FUNCTION
the aggregator (that is, Aggregator 1).
— Specifies the number of timed records that are available for a given logical PMU 1. The
PMU 1 NO OF TIMED RECORDS
length of each record is equal to the available memory divided by the content size and number of records. As the number
of records is increased, the available storage for each record is reduced. The relay supports a maximum of 128 records in
either timed or forced mode.
— Specifies what happens when the recorder uses its entire available memory storage. With
PMU 1 TRIGGER MODE
"Automatic Overwrite," the last record is erased to facilitate new recording, when triggered. Under the "Protected"
selection, the recorder stops creating new records when the entire memory is used up by the old uncleared records.
PMU 1 TIMED TRIGGER POSITION
applies only to the timed mode of recording.
5.5.7.13 Aggregator
SETTINGS  SYSTEM SETUP  PHASOR MEASUREMENT UNIT  PMU AGGREGATOR 1(2)
 PMU AGGREGATOR 1

C60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 5-74: Rate of change of frequency trigger logic
SETTINGS
PMU 1 df/dt TRIGGER RAISE:
PMU 1 df/dt TRIGGER FALL:
RUN
df/dt > RAISE
OR
–df/dt > FALL
PMU 1 FUNCTION

DISABLE
PMU 1 NO OF TIMED

RECORDS: 10
PMU 1 TRIGGER MODE:

AUTOMATIC OVERWRITE
PMU 1 TIMED TRIGGER

POSITION: 10%
— Specifies the amount of pre-trigger data as a percent of the entire record. This setting
PMU AGGREGATOR 1

PROTOCOL: NONE
PMU AGGREGATOR 1:

IDCODE: 1
PMU AGGREGATOR 1

INCLUDE PMU1: No
FLEXLOGIC OPERANDS
PMU 1 FREQ TRIGGER
PMU 1 VOLT TRIGGER
PMU 1 CURR TRIGGER
PMU 1 POWER TRIGGER
SETTING
PMU 1 USER TRIGGER:
Off = 0
SETTINGS
PMU 1 df/dt TRIGGER PKP TIME:
PMU 1 df/dt TRIGGER DPO TIME:
t
PKP
t
DPO
Range: Enabled, Disabled
Range: 2 to 128 in steps of 1
Range: Automatic Overwrite, Protected
Range: 1 to 50% in steps of 1
Range: NONE, 37.118, 90-5
Range: 1 to 65534 in steps of 1
Range: No, Yes
SYSTEM SETUP
FLEXLOGIC OPERAND
PMU 1 TRIGGERED
to STAT bits of
the data frame
FLEXLOGIC OPERAND
PMU 1 ROCOF TRIGGER
847000A1.CDR
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