701 Motor Protection Relay
Date Code 20010719
Settings Calculation
Sequential Events Recorder (SER) Settings
4.52
Sequential Events Recorder (SER) Settings
The SEL-701 Relay 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 & Relay 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 relay 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 relay 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
Table 4.41
SET R SER Trigger Settings
Table 4.41
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
SER3
24 Relay Word bits, separated by
commas. Use NA to disable setting.
SER3 = RTDFLT, WDGALRM,
WDGTRIP, BRGALRM,
BRGTRIP, AMBALRM,
AMBTRIP, OTHALRM,
OTHTRIP, 81D1T, 81D2T,
81D3T, TRGTR, START,
50P1T, 50P2T
SER4
24 Relay Word bits, separated by
commas. Use NA to disable setting.
SER4 = NA
Содержание SEL-701
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