Fault Report Operation - GE D90 Plus Instruction Manual

CHAPTER 10: DIGITAL FAULT RECORDER

Fault report operation

PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Otherwise the indication is red.
In automatic overwrite mode, the Ready to Capture indication is green when all of the
following conditions hold:
• The fault report feature is enabled
• The source for the fault report is properly configured
• The block trigger input is not asserted
• A record capture is not currently in progress
The Memory Available indication is green when less than 80% of the memory has been
filled. It is yellow when the amount of memory filled is between 80% and 99%, and it is red
if 100% of the memory is filled.
Figure 439: Digital fault reporter summary screen
The fault report screen displays the detailed fault data for each fault. This data includes the
fault and prefault current and voltage data, as well as the cause of trip, trip type, active
setting group, shot count, and duration data.
Figure 440: Fault report front panel screen
The fault report trigger can be any FlexLogic operand, but in most applications it is
expected to be the same operand that is used to drive an output relay to trip a breaker
(usually a virtual output). To prevent the overwriting of fault events, do not use the
disturbance detector to trigger a fault report. A FAULT RPT TRIG event is automatically
created when the report is triggered.
If a number of protection elements are ORed to create a fault report trigger, the first
operation of any element causing the OR gate output to become high triggers a fault
report. However, If other elements operate during the fault and the first operated element
FAULT REPORT
507