Oscillography - GE B90 Instruction Manual

5 SETTINGS
The last record is available as individual data items via communications protocols.
• PRE-FAULT 1 TRIGGER: Specifies the FlexLogic™ operand to capture the pre-fault data. The rising edge of this
operand stores one cycle-old data for subsequent reporting. The element waits for the fault trigger to actually create a
record as long as the operand selected as
element resets and no record is created.
• FAULT 1 TRIGGER: Specifies the FlexLogic™ operand to capture the fault data. The rising edge of this operand
stores the data as fault data and results in a new report. The trigger (not the pre-fault trigger) controls the date and time
of the report.
• FAULT REPORT 1 #1 to FAULT REPORT 1 #32: These settings specify an actual value such as voltage or current
magnitude, true RMS, phase angle, frequency, temperature, etc., to be stored should the report be created. Up to 32
channels can be configured. Two reports are configurable to cope with variety of trip conditions and items of interest.
a) MAIN MENU
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PATH: SETTINGS PRODUCT SETUP
 OSCILLOGRAPHY
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Oscillography records contain waveforms captured at the sampling rate as well as other relay data at the point of trigger.
Oscillography records are triggered by a programmable FlexLogic™ operand. Multiple oscillography records may be cap-
tured simultaneously.
The is selectable, but the number of cycles captured in a single record varies considerably based on
NUMBER OF RECORDS
other factors such as sample rate and the number of operational modules. There is a fixed amount of data storage for oscil-
lography; the more data captured, the less the number of cycles captured per record. See the

RECORDS

OSCILLOGRAPHY

ple configurations with corresponding cycles/record.
GE Multilin
PRE-FAULT 1 TRIGGER
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OSCILLOGRAPHY
NUMBER OF RECORDS:
15
TRIGGER MODE:
Automatic Overwrite
TRIGGER POSITION:
50%
TRIGGER SOURCE:
Off
AC INPUT WAVEFORMS:
16 samples/cycle
 DIGITAL CHANNELS
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 ANALOG CHANNELS
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menu to view the number of cycles captured per record. The following table provides sam-
B90 Low Impedance Bus Differential System
5.2 PRODUCT SETUP
is "On". If the operand remains "Off" for 1 second, the
5.2.9 OSCILLOGRAPHY
Range: 1 to 64 in steps of 1
Range: Automatic Overwrite, Protected
Range: 0 to 100% in steps of 1
Range: FlexLogic™ operand
Range: Off; 8, 16, 32, 64 samples/cycle
5
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ACTUAL VALUES
5-35