GE 889 - Fault Reports

4–50 889 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
DEVICE CHAPTER 4: SETPOINTS
Figure 4-10: Data Logger Storage Capacity
Fault Reports
When enabled, this function monitors the pre-fault trigger. The pre-fault data are stored in
the memory for prospective creation of the fault report on the rising edge of the pre-fault
trigger. The element waits for the fault trigger as long as the pre-fault trigger is asserted,
but not shorter than 1 second. When the fault trigger occurs, the fault data is stored and
the complete report is created. If the fault trigger does not occur within 1 second after the
pre-fault trigger drops out, the element resets and no record is created.
The user programmable fault report contains a header with the following information:
• Relay model
• Device name
•Firmware revision
• Date and time of trigger
• Name of pre-fault trigger (FlexLogic operand)
• Name of Fault trigger (FlexLogic operand)
• Active setting group at the time of pre-fault trigger
• Active setting group at the time of fault trigger.
The fault report continues with the following information:
• All current and voltage phasors (one cycle after the fault trigger)
• Pre-fault values for all programmed analog channels (one cycle before pre-fault
trigger)