Schweitzer Engineering Laboratories SEL-421-4 - Table 8.46 Switch-Onto-Fault Scheme; Table 8.47 Out-Of-Step Tripping;Blocking

8.19
Date Code 20171021 Instruction Manual SEL-421 Relay
Settings
Group Settings
Make Table 8.46 settings when Group setting ESOTF := Y.
Make Table 8.47 settings only when Group setting EOOS := Y; the number of
settings is dependent on Group settings E21P := 1–5 and E21G := 1–5.
Z3D Zone 3 Time Delay (OFF, 0.000–16000 cycles) 60.000 0.125
Z4D Zone 4 Time Delay (OFF, 0.000–16000 cycles) OFF 0.125
Z5D Zone 5 Time Delay (OFF, 0.000–16000 cycles) OFF 0.125
Table 8.46 Switch-Onto-Fault Scheme
Setting Prompt
Default
Value
Increment
ESPSTF Single-Pole Switch-Onto-Fault (Y, N) N
EVRST Switch-Onto-Fault Voltage Reset (Y, N) N
VRSTPU Switch-Onto-Fault Reset Voltage (0.60–1.00 pu) 0.60–
1.00 pu
0.01
52AEND 52A Pole Open Time Delay (OFF, 0.000–16000 cycles) 10.000 0.125
CLOEND CLSMON or Single Pole Open Delay (OFF, 0.000–16000
cycles)
OFF 0.125
SOTFD Switch-Onto-Fault Enable Duration (0.500–16000
cycles)
10.000 0.125
CLSMON Close Signal Monitor (SEL
OGIC Equation) NA
Table 8.47 Out-of-Step Tripping/Blocking (Sheet 1 of 2)
Setting Prompt
Default Value
Increment
5 A 1 A
OOSB1 Block Zone 1 (Y, N) Y Y
OOSB2 Block Zone 2 (Y, N) Y Y
OOSB3 Block Zone 3 (Y, N) Y Y
OOSB4 Block Zone 4 (Y, N) N N
OOSB5 Block Zone 5 (Y, N) N N
OSBD Out-of-Step Block Time Delay (0.500–8000
cycles)
2.000 2.000 0.125
OSBLTCH Latch Out-of-Step Blocking (Y, N) N N
EOOST Out-of-Step Tripping (N, I, O) N N
OSTD Out-of-Step Trip Delay (0.500–8000 cycles) 0.500 0.500 0.125
X1T7 Zone 7 Reactance—Top
(0.05 to 140  secondary) 5 A
(0.25 to 700  secondary) 1 A
23.0 115 0.01
X1T6 Zone 6 Reactance—Top
(0.05 to 140  secondary) 5 A
(0.25 to 700  secondary) 1 A
21.0 105 0.01
R1R7 Zone 7 Resistance—Right
(0.05 to 140  secondary) 5 A
(0.25 to 700  secondary) 1 A
23.0 115 0.01
Table 8.45 Distance Element Common Time Delay (Sheet 2 of 2)
Setting Prompt
Default
Value
Increment