12.5
Date Code 20060320 Instruction Manual SEL-311C Relay
Standard Event Reports and SER
Standard 15/30/60/180-Cycle Event Reports
The event type designations AG through CAG in Table 12.1 are only entered in
the
Event: field if the fault locator operates successfully. If the fault locator
does not operate successfully, just
TRIP or ER is displayed.
Fault Location
The relay reports the fault location if the EFLOC setting = Y and the fault
locator operates successfully after an event report is generated. If the fault
locator does not operate successfully or if EFLOC = N,
$$$$$$ is listed in the
field. Fault location is based upon the line impedance settings Z1MAG,
Z1ANG, Z0MAG, and Z0ANG and corresponding line length setting LL. See
the SET Command in Tab le 9.1 and corresponding Settings Sheets in
Section 9: Setting the Relay for information on the line parameter settings.
# (Event Summary Number)
Unique event identifier of the event summary found in the HIS E command.
See Section 10: Serial Port Communications and Commands.
Shot
Reclosing Shot Count at trigger time. See Section 6: Close and Reclose Logic.
Frequency
Sampling frequency at trigger time.
Group
Active settings group at trigger time.
Trip and Close Times
Trip and close times follow 52A Relay Word bit contact changes during the
event. A blank value indicates that a trip or close did not occur.
Table 12.1 Event Types
Event Type Description
AG, BG, CG
Single phase-to-ground faults. Appends T if TRIP asserted.
ABC
Three-phase faults. Appends T if TRIP asserted.
AB, BC, CA
Phase-to-phase faults. Appends T if TRIP asserted.
ABG, BCG, CAG
Two phase-to-ground faults. Appends T if TRIP asserted.
TRIP
Assertion of Relay Word bit TRIP (fault locator
could not operate successfully to determine the
phase involvement, so just TRIP is displayed).
ER
SELOGIC control equation setting
ER. Phase involvement is indeterminate.
TRIG
Execution of TRIGGER command.
PULSE
Execution of PULSE command.
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