GE L90 Instruction Manual page 110

5.2 PRODUCT SETUP
• Name of the relay, programmed by the user
• Firmware revision of the relay
• Date and time of trigger
• Name of trigger (specific operand)
• Line/Feeder ID via the name of a configured signal source
• Active setting group at the time of trigger
• Pre-fault current and voltage phasors (one-quarter cycle before the trigger)
• Fault current and voltage phasors (three-quarter cycle after the trigger)
• Elements operated at the time of triggering
• Events: 9 before trigger and 7 after trigger (only available via the relay webpage)
• Fault duration times for each breaker (created by the Breaker Arcing Current feature)
The captured data also includes the fault type and the distance to the fault location, as well as the reclose shot number
(when applicable) The Fault Locator does not report fault type or location if the source VTs are connected in the Delta con-
figuration. To include fault duration times in the fault report, the user must enable and configure Breaker Arcing Current fea-
ture for each of the breakers. Fault duration is reported on a per-phase basis.
The trigger can be any FlexLogic™ operand, but in most applications it is expected to be the same operand, usually a vir-
tual output, that is used to drive an output relay to trip a breaker. To prevent the overwriting of fault events, the disturbance
detector should not be used to trigger a fault report. A
triggered.
If a number of protection elements are ORed to create a fault report trigger, the first operation of any element causing the
5
OR gate output to become high triggers a fault report. However, If other elements operate during the fault and the first oper-
ated element has not been reset (the OR gate output is still high), the fault report is not triggered again. Considering the
reset time of protection elements, there is very little chance that fault report can be triggered twice in this manner. As the
fault report must capture a usable amount of pre and post-fault data, it can not be triggered faster than every 20 ms.
Each fault report is stored as a file; the relay capacity is fifteen (15) files. An sixteenth (16th) trigger overwrites the oldest
file.
The enerVista UR Setup software is required to view all captured data. The relay faceplate display can be used to view the
date and time of trigger, the fault type, the distance location of the fault, and the reclose shot number.
The
FAULT REPORT 1 SOURCE
setting assigns the FlexLogic™ operand representing the protection element/elements requiring oper-
FAULT 1 REPORT TRIG
ational fault location calculations. The distance to fault calculations are initiated by this signal. The
and
FAULT REPORT 1 Z0 MAG
See the
ACTUAL VALUES
5-20
setting selects the source for input currents and voltages and disturbance detection. The
impedances are entered in secondary ohms.
!" !
RECORDS FAULT REPORTS
L90 Line Differential Relay
event is automatically created when the report is
FAULT RPT TRIG
menu for additional details.
5 SETTINGS
FAULT REPORT 1 Z1 MAG
GE Multilin