IN.7Index
O–P
Date Code 20111215 SEL-421 Relay
MIRRORED BITS Communications U.1.4,
R.4.2, R.5.15–R.5.21
Pulsar modem
R.5.18
virtual terminal
R.9.36
MOD (Motor Operated Disconnect)
A.5.2, A.5.4
Modbus Plus
A.6.3
Modbus RTU
A.6.3
Monitor, Circuit Breaker
See Circuit Breaker‚ monitor
MOV
control outputs
U.2.7
Multidrop Network
A.6.4
O
OOSB
See Out-of-Step
OOST
See Out-of-Step
OPEN n Command
R.9.34
Open Phase Detection Logic
R.1.20
Operator Control LEDs
U.5.40–U.5.43
See also LEDs
factory defaults
U.5.42–U.5.43
Operator Control Pushbuttons
U.5.40–
U.5.43
Oscillography
U.1.3, U.4.42–U.4.49,
A.3.7–A.3.11
See also Event
COMTRADE
A.3.7
event report
A.3.7, A.3.11
retrieving high-resolution
COMTRADE
U.3.17–U.3.18,
U.4.46–U.4.50
application example
ACSELERATOR QuickSet
software
U.4.47–U.4.49
terminal
U.4.46–U.4.47
Out-of-Step
R.1.43–R.1.48
blinders
A.1.117, A.1.122, A.1.128
blocking, OOSB
U.1.3, R.1.43
application example
A.1.116–
A.1.126
logic diagrams
R.1.47–R.1.48
setting rules
A.1.120, A.1.129,
R.1.44
single pole
R.1.44
three-phase fault
R.1.44
trip-on-way-in
A.1.129
trip-on-way-out
A.1.129
tripping, OOST
U.1.3, R.1.43
application example
A.1.126–
A.1.133
Output SEL
OGIC Control Equations
R.3.3, R.10.35
Output Testing
front panel
U.5.27–U.5.28
Overcurrent Elements
R.1.64–R.1.84
application example
A.1.10–A.1.11,
A.1.33–A.1.34, A.1.66–A.1.68,
A.1.100–A.1.103
definite-time
negative-sequence
R.1.65,
R.1.66, R.1.70
phase
R.1.64, R.1.66, R.1.68
residual ground
R.1.65, R.1.67,
R.1.69
direction
R.1.64
instantaneous
negative-sequence
A.1.101–
A.1.102, R.1.65, R.1.66,
R.1.70
phase
A.1.10, A.1.33, A.1.66,
A.1.100, R.1.64–R.1.66,
R.1.68
residual ground
A.1.66–A.1.67,
R.1.65–R.1.67, R.1.69
inverse time
A.1.10–A.1.11,
A.1.33–A.1.34, R.1.70–R.1.84
curves
R.1.74–R.1.83
equations
R.1.73
selectable operating quantity
A.1.33–A.1.34, A.1.67–
A.1.68, A.1.102–A.1.103,
R.1.70–R.1.84
logic diagrams
R.1.68–R.1.70,
R.1.84
selectable operating quantity
A.1.10–A.1.11, A.1.33–A.1.34,
A.1.67–A.1.68, A.1.102–A.1.103,
R.1.70–R.1.84
current selections
R.1.71
time-current characteristics
R.1.72–
R.1.83
torque control
R.1.64, R.1.71
P
Panel Mount U.2.31
dimensions
U.2.31
Password
U.1.4, U.4.7, U.4.9–U.4.10
defaults
U.4.7
changing, application example
U.4.9–U.4.10
front-panel screen
U.5.14
jumper
U.2.20
See also Jumpers
unauthorized
U.4.9
Passwords
R.4.11
PC Software
See
ACSELERATOR QuickSet
Software
Permissive Overreaching Transfer Trip
See POTT
Phase and Negative-Sequence
Directional Elements
R.1.38–R.1.39
32P, phase
R.1.38
32Q, negative-sequence voltage
polarized
R.1.27, R.1.38
logic diagrams
R.1.39
ZLOAD effect
R.1.38
Phase Distance Elements
See Mho Phase Distance Elements
Phase Instantaneous Definite-Time
Overcurrent Elements
See Overcurrent Elements
Phasors
calculate from event report
application example
A.3.16–
A.3.20
hand calculation method
A.3.16–
A.3.20
polar calculator method
A.3.20
Plug-In Boards
U.2.12–U.2.17
See also Input/Output
communications card
U.2.17
interface boards
U.2.12–U.2.17
PMU, phasor measurement unit
R.7.1
See also Synchrophasors
Pole-Open Logic
R.1.20
application example
A.1.12, A.1.35,
A.1.74, A.1.105
POTT
R.1.91–R.1.98
application example
A.1.36–A.1.38,
A.1.106–A.1.108
cross-country faults
R.1.94
application example
A.1.41–
A.1.45
current reversal guard
A.1.36,
A.1.106, R.1.92
echo
A.1.36, A.1.107, R.1.93
logic diagrams
R.1.96–R.1.98
three-terminal lines
R.1.94
weak infeed
A.1.37, A.1.108,
R.1.93–R.1.94
Power Flow
analysis
A.4.7–A.4.9
power flow convention
A.2.28
Power Supply
connections
U.2.38, U.4.3
types
U.4.3
voltage ranges
U.2.39, U.4.3
PPS
U.2.11, U.4.72
See also Time Synchronization
1k PPS (obsolete)
U.2.11, U.4.73
Protection and Automation Separation
R.3.3
See also SEL
OGIC Control
Equations
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