U.4.45
Date Code 20020501
User’s Guide
SEL-421/SEL-421-1 Relay
Basic Relay Operations
Reading Oscillograms, Event Reports, and SER
Figure 4.37
Relay Event History Dialog Box in the
AC
SEL
ERATOR
Software.
Step 4. Get the event. Select Binary COMTRADE in the Event Type
dialog box. Highlight the event you want to view and click the
Get Event button. The relay saves the .HDR, .CFG, and .DAT
files in the
AC
SEL
ERATOR
421\EVENTS\ directory with the
HR_nnnnn file prefix (nnnnn represents the event number).
The
AC
SEL
ERATOR
software then presents the Event
Waveform window similar to that in
and the
Figure 4.38
AC
SEL
ERATOR
Event Waveform Window.
Figure 4.39
Sample Event Oscillogram.
You can also examine a phasors display, an event harmonic analysis display,
and the event summary from the Event Waveform View menu. See
Events on page U.3.15 in the User’s Guide
for more information.
Summary of Contents for SEL-421
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