10.8
SEL-751 Relay Instruction Manual Date Code 20170927
Analyzing Events
Event Reporting
➤ Event number, unique event reference number, date, time, event
type, and fault location (see Table 10.1)
➤ Maximum feeder current
➤ Frequency
➤ Target LED status
Viewing the Event History
Access the history report from the communications ports, using the HIS
command or the analysis menu within
ACSELERATOR QuickSet SEL-5030
Software. View and download history reports from Access Level 1 and higher.
Use the HIS
command from a terminal to obtain the event history. You can
specify the number of the most recent events that the relay returns. See
HISTORY Command on page 7.37 for information on the HIS command.
Use the front-panel
MAIN > Events > Display menu to display event history
data on the SEL-751 front-panel display.
Use the
ACSELERATOR QuickSet software to retrieve the relay event history.
View the Relay Event History dialog box via the Tools > Events > Get Event
Files menu.
Clearing
Use the HIS C command to clear or reset history data from Access Levels 1
and higher. Clear/reset history data at any communications port. This clears all
event summaries, history records, and reports. The HIS C command does not
reset the unique event reference number. This number continues to increment
from the present value with each subsequent event. Use the HIS CA command
to clear all event data and reset the unique event reference number to 10000.
Event Reports
The latest event reports are stored in nonvolatile memory. Each event report
includes four sections:
➤ Analog values of current and voltage
➤ Digital states of the protection and control elements, including
overcurrent, and voltage elements, plus status of digital output
and input states
➤ Event Summary
➤ Settings in service at the time of event retrieval, consisting of
Group, Logic, Global, and Report settings classes
=>>HIS <Enter>
SEL-751 Date: 02/03/2015 Time: 11:22:50.424
FEEDER RELAY Time Source: Internal
FID = SEL-751-X272-V0-Z006002-D20150103
# REF DATE TIME EVENT LOCAT CURRENT FREQ TARGETS
1 10016 02/03/2015 10:51:34.267 BG T 64.23 9.3 60.0 11100001
2 10015 02/02/2015 16:50:38.619 BCG T 60.43 18.0 60.0 11100001
3 10014 02/02/2015 16:36:36.604 CAG T 86.77 17.6 60.0 11100001
4 10013 02/01/2015 16:32:04.924 CAG T 75.44 18.0 59.7 11100001
5 10012 02/01/2015 16:31:44.917 CG T 68.14 21.5 60.0 11100001
=>>
Event
Number
Reference
Number
Event
Type
Location Maximum
Current
Frequency User-Defined
Target LEDs
Figure 10.2 Sample Event History
To Next Page
Loading...
