Date Code 20010731
Setting the Relay
7-5
SEL-352-1, -2 Instruction Manual
The YPTR setting is used for all reports that display voltage or power in primary values, such as
the event report. All actual relay calculations are done using secondary values, so this setting
does not affect relay performance, only reporting.
Mask For Event Reporting (MER)
The mask for event reporting (MER) indicates what conditions trigger an event report. The
SEL-352 Relay automatically triggers event reports for certain conditions. Customize triggering
by using the MER setting. Refer to
Event Report Triggering
in
Section 10: Event Reports and
SER
.
MER can be a single Relay Word bit or a complex SEL
OGIC
®
control equation. Set MER to
trigger event reports for things other than 86BFT triggering. If the SEL-352 Relay is used for
reclosing, reclosing supervision, or point-on-wave closing, set MER = CLOSE+MCLOSE.
When selecting Relay Word bits to include in the MER equation, consider the LER setting,
which determines the length of each event report. If your operation does not all occur within the
LER setting time, important information may be lost. Use a time-delayed pickup timer to trigger
a second report if necessary. For example, if you suspect your close operation to take
approximately 13 cycles, you may want to trigger an event for the CLOSE input initiation, the
close output (CCA), and a timed-delayed CLOSE initiation to be sure the relay actually sees the
breaker closing.
LER = 15
T1A = CLOSE
T1pu = 14
MER = CLOSE+CCA+T1AD
CLOSE triggers the first 15 cycles, and CCA or T1AD triggers the second 15 cycles.
Global Settings (SET G Command)
Date Format (DATE_F)
Most reports display the date they are displayed or give a date for particular operations. The
DATE_F setting determines how this date is displayed. If DATE_F = MDY, the date is
displayed 3/22/97 (month, day, year). If DATE_F = YMD, the date is displayed 97/3/22. Set the
DATE_F setting to what your company typically uses. Most relays use the MDY format, which
is the SEL-352 Relay default.
S
ETTINGS
D
ESCRIPTIONS
If particular schemes are selected, the specific settings are shown for that scheme. If CUSTOM
is used, all settings are available along with the SEL
OGIC
control equations. The default
equations for each scheme normally are hidden. When you change to a CUSTOM configuration,
the SEL
OGIC
control equations are shown for the scheme that was enabled last.
Table 7.4, Table 7.5, Table 7.6, and Table 7.7 list only the settings that appear if the scheme
logic is used (not CUSTOM). The table gives a brief description of the use of the setting, the
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