IN.7
Index
Date Code 20020501
SEL-421/SEL-421-1 Relay
Password
defaults
changing, application example
–
front-panel screen
jumper
unauthorized
PC Software
AC
SEL
ERATOR
Software
Permissive Overreaching Transfer Trip
Phase and Negative-Sequence
Directional Elements
32P, phase
32Q, negative-sequence voltage
polarized
logic diagrams
ZLOAD effect
Phase Distance Elements
See Mho Phase Distance Elements
Phase Instantaneous Definite-Time
Overcurrent Elements
Phasors
calculate from event report
application example
hand calculation method
polar calculator method
Plug-In Boards
See also Input/Output
communications card
interface boards
Pole-Open Logic
application example
,
,
POTT
application example
–
–
cross-country faults
application example
current reversal guard
,
echo
,
,
–
logic diagrams
–
three-terminal lines
weak infeed
Power Flow
analysis
–
power flow convention
Power Supply
connections
types
voltage ranges
PPS
See also Time Synchronization
1k PPS
Protection and Automation Separation
OGIC
Control
Equations
Pulsar Modem
IRRORED
B
ITS
Communications
PULSE Command
application example
front panel
–
terminal
include TESTPUL in ER
no event data
Pushbuttons
factory defaults
front panel
labels
LEDs
navigation
operator control
programming
Q
Quadrilateral Ground Distance Elements
application example
–
–
logic diagrams
–
polarization
application example
,
Z1ANG
zero-sequence compensation
QUIT Command
R
Rack Mount
dimensions
Rear Panel
alert symbols
layout
,
template
Recloser
RELAY TRIP EVENT
front panel
Relay Word Bits
in SEL
OGIC
control equations
list sorted alphabetically
listed by row, sorted by function
Remote Bit
,
Remote Terminal Unit (RTU)
Reset
battery monitor metering
demand metering
energy metering
maximum/minimum metering
targets
Rolling Demand Metering
S
Schweitzer Engineering Laboratories
contact information
Screw Terminal Connectors
–
keying
receptacle keying
removal and insertion
tightening torque
Scrolling
See Front Panel, screen scrolling
Secondary Connections
levels
SEL Binary Protocols
Fast Meter
,
Fast Operate
Fast SER
,
SEL Contact Card
SEL-2020
SEL-2030
SEL-2701
SEL-421 Relay
features
models
options
SEL-421-1 Relay
features
models
options
SEL-5030
AC
SEL
ERATOR
Software
AC
SEL
ERATOR
Software
Summary of Contents for SEL-421
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