SEL-701-1 Monitor
Date Code 20011009
Settings Calculation
Sequential Events Recorder (SER) Settings
3.54
Sequential Events Recorder (SER) Settings
The SEL-701-1 Monitor processes ac and dc inputs four times per power system
cycle. During every processing interval, it updates the state of each protection element
and logic function. The details of this activity are described in
Control Equations and Monitor Logic
. The Sequential Events Recorder (SER) function
operates by monitoring a user-defined subset of the protection element results, contact
input states, and contact output states. When any of the monitored elements changes
state, the monitor adds a record to the SER memory. Each record includes the date and
time of the state change, the name or alias of the monitored element, and the element’s
final state. The monitor stores the 512 latest records sequentially in nonvolatile
memory. You can view the stored information using a PC connected to the front- or
rear-panel serial ports.
This instruction manual subsection outlines the SER function settings. The SER
settings include settings which trigger entries into the event record and alias settings
that allow you to customize the way the recorded data is displayed.
describes the format and contents of the SER reports.
SER Trigger Settings
The SEL-701-1 Monitor SER function provides four list settings to define the
conditions that add records to the SER memory: SER1, SER2, SER3, and SER4. You
can set the monitor to monitor up to 96 conditions. Each list can contain up to 24 items.
Each item must be the name of a Relay Word bit whose definitions are shown in
Table B.4 on page B.18 in Appendix B: SELogic® Control Equations and
Monitor Logic
. The factory default SER settings are shown in
Table 3.42
SET R SER Trigger Settings
Setting
Prompt
Setting Range
Setting Name = Factory Default
SER1
24 Relay Word bits, separated
by commas. Use NA to
disable setting.
SER1 = IN1, IN2, IN3, IN4, IN5,
IN6, IN7
SER2
24 Relay Word bits, separated
by commas. Use NA to
disable setting.
SER2 = STARTING, RUNNING,
STOPPED, JAMTRIP, LOSSALRM,
LOSSTRIP, 46UBA, 46UBT, 49A,
49T, 47T, SPEEDSW, SPDSTR,
TRIP, OUT1, OUT2, OUT3, 50G1T,
50G2T, 50N1T, 50N2T
Содержание SEL-701-1
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