12.6
SEL-351A Relay Instruction Manual Date Code 20080213
Standard Event Reports and SER
Standard 15/30-Cycle Event Reports
➤ Phase (A = channel IA, B = channel IB, C = channel IC)
➤ Neutral ground (N = channel IN)
➤ Calculated residual (I
G
= 3I
0
; calculated from channels IA, IB,
and IC)
➤ Negative-sequence (Q = 3I
2
; calculated from channels IA, IB,
and IC)
Retrieving Full-
Length Standard
Event Reports
The latest event reports are stored in nonvolatile memory. Each event report
includes four sections:
➤ Current, voltage, station battery, frequency, output contacts,
optoisolated inputs
➤ Protection and control elements
➤ Event summary
➤ Group, SELOGIC control equations, and global settings
Use the EVE command to retrieve the reports. There are several options to
customize the report format. The general command format is:
EVE [n Sx Ly L R A D V C P]
Below are example EVE commands.
where:
n Event number (1–number of events stored). Defaults to 1
if not listed, where 1 is the most recent event.
Sx Display x samples per cycle (4 or 16); defaults to 4 if not
listed.
Ly Display y cycles of data (1–LER). Defaults to LER value
if not listed. Unfiltered reports (R parameter) display an
extra cycle of data.
L Display 16 samples per cycle; same as the S16 parameter.
R Specifies the unfiltered (raw) event report. Defaults to 16
samples per cycle unless overridden with the Sx
parameter.
A Specifies that only the analog section of the event is
displayed (current, voltage, station battery, frequency,
output contacts, optoisolated inputs).
D Specifies that only the digital section (
Protection and
Control Elements
) of the event is displayed.
V Specifies variable scaling for analog values.
C Display the report in Compressed ASCII format.
P Precise to synchrophasor level accuracy for signal content
at nominal frequency. This option is available when
TSOK = logical 1. The P option implies R as only raw
data is available with this accuracy. When M or D are
specified with P, then the P option is ignored since is only
pertains to analog data.
Serial Port
Command
Description
EVE Display the most recent event report at 1/4 cycle resolution.
EVE 2 Display the second event report at 1/4 cycle resolution.
Courtesy of NationalSwitchgear.com
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