Schweitzer Engineering Laboratories SEL-311L, Instruction Manual

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12-6 Standard Event Reports and SER Date Code 20010625
SEL-311L Instruction Manual
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.
Targets
The relay reports the targets at the rising edge of TRIP and TRIP87. The targets include
ZONE/LEVEL 1–3; TIME; COMM; 87; and 50/51. If there is no rising edge of TRIP in the
report, the Targets field is blank. See
Front-Panel Target LEDs in Section 5: Trip and Target
Logic .
Currents and Voltages
Pre-fault current and voltage magnitudes and phase angles are selected from the first cycle of the
event report. Fault currents and voltages use the same data as the fault locator. If the fault
locator does not operate, the fault data is sampled one and one-quarter cycles after the event
report is triggered.
Retrieving Full-Length Standard Event Reports
The latest event reports for both backup and line current differential protection are stored in
nonvolatile memory. Each event report includes five sections:
v
Analog information, such as current, voltage, station battery, and V1Mem
v
Protection and control elements, contact outputs, and optoisolated inputs
v
Communications and M
IRRORED
B
ITS
elements
v
Event summary
v
Group, SEL
OGIC
control equations, and global settings
Use the EVE command to retrieve line current differential reports. Use the EVE B command to
retrieve backup protection event reports. There are several options to customize the report
format. The general command format is:
EVE [B] [ n S x L y L R A D C M ]
where:
n Event number (1 to number of events stored), corresponding to
the number displayed in the HIS report. Defaults to 1 if not
listed, where 1 is the most recent event.
S x Display x samples per cycle (4 or 16); defaults to 4 if not listed.