GE B90 User Manual

CHAPTER 5: SETTINGS PRODUCT SETUP
B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-105
5
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
PRE-FAULT 1 TRIGGER is “On.” If the operand remains “Off” for 1 second, the 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, and so on, to be stored when the report is created. Up to 32 channels can
be configured. Two reports are configurable to cope with variety of trip conditions and items of interest.
5.3.10 Oscillography
5.3.10.1 Menu
SETTINGS  PRODUCT SETUP  OSCILLOGRAPHY
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 can be captured
simultaneously.
The
NUMBER OF RECORDS is selectable, but the number of cycles captured in a single record varies considerably based on
other factors, such as sample rate and the number of operational modules. There is a fixed amount of data storage for
oscillography; the more data captured, the less the number of cycles captured per record. See the
ACTUAL VALUES 
RECORDS  OSCILLOGRAPHY
menu to view the number of cycles captured per record. The following table provides sample
configurations with corresponding cycles/record. The minimum number of oscillographic records is three.
 OSCILLOGRAPHY


NUMBER OF RECORDS:
15
Range: 1 to 64 in steps of 1

TRIGGER MODE:
Automatic Overwrite
Range: Automatic Overwrite, Protected

TRIGGER POSITION:
50%
Range: 0 to 100% in steps of 1

TRIGGER SOURCE:
Off
Range: FlexLogic operand

AC INPUT WAVEFORMS:
16 samples/cycle
Range: Off; 8, 16, 32, 64 samples/cycle

 DIGITAL CHANNELS

See below

 ANALOG CHANNELS

See below

GE B90 Specifications

General

Brand	GE
Model	B90
Category	Relays
Language	English