6.3
Date Code 20090730 Instruction Manual SEL-734 Meter
Power Quality and Event Analysis
Event Reports
The meter sends event summaries to any serial ports with setting AUTO = Y
each time an event triggers.
The latest event summaries are stored in nonvolatile memory and are accessed
by the HIS (Event Summaries/History) command.
Retrieving
Full-Length Standard
Event Reports
Use the EVE command to retrieve standard event reports. There are several
options for customizing the report format. The general command format is:
EVE [n L R C]
See Tab le 6.1 for examples of EVE commands.
The EVE command, without the L option, provides the following four
sections:
➤ Current, voltage, frequency
➤ Meter elements
➤ Event summary
➤ Group, SELOGIC
®
control equations, and global settings
The EVE command, with the L option, provides only current and voltage
values.
If you request an event report that does not exist, the meter responds:
Invalid Event
Compressed ASCII
Event Reports
The SEL-734 provides Compressed ASCII event reports to facilitate event
report storage and display. The SEL-2030 Communications Processor, the
SEL-5601 Analytic Assistant software, and the
ACSELERATOR QuickSet
®
SEL-5030 Software take advantage of the Compressed ASCII format. Use the
EVE C command or CEVENT command to display Compressed ASCII
where:
n = Event number (1–number of events stored). Defaults to 1
if not listed, where 1 is the most recent event.
L or R = Specifies raw (unfiltered) analog data at the sample rate
specified by SRATE (1 or 8 kHz) and the duration
specified by LER (0.25, 0.5, or 1 second).
C = Display the report in Compressed ASCII format.
Table 6.1 Example EVE Commands
Serial Port Command Description
EVE Display the most recent event report at 16 samples-per-cycle
resolution, fundamental frequency only.
EVE 2 Display the second event report at 16 samples-per-cycle
resolution, fundamental frequency only.
CEV 2 / EVE C 2 Display the second report in Compressed ASCII format at
16 samples-per-cycle resolution, fundamental frequency only.
EVE L / EVE R Display the most recent report at 1 or 8 kHz resolution; analog
data are unfiltered (raw).
CEV R / EVE C R Display the most recent report 1 or 8 kHz resolution in
Compressed ASCII format; analog data are unfiltered (raw).
Courtesy of NationalSwitchgear.com
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