Schweitzer Engineering Laboratories SEL-421-4 - Page 550

8.14
SEL-421 Relay Instruction Manual Date Code 20171021
Settings
Group Settings
The number of pickup settings in Table 8.37 is dependent on Group setting
E21P := 1–5. When E21P := N, no settings are made for Table 8.37.
ECDTD Distance Element Common Time Delay (Y, N) N
ESOTF Switch-Onto-Fault (Y, N) Y
EOOS Out-of-Step (Y, Y1, N) N
ELOAD Load Encroachment (Y, N) Y
E50P Phase Instantaneous Definite-Time Overcurrent Ele-
ments (N, 1–4)
1
E50G Residual Ground Instantaneous Definite-Time Overcur-
rent Element (N, 1–4)
N
E50Q Negative-Sequence Instantaneous Definite-Time Over-
current Elements (N, 1–4)
N
E51S Selectable Operating Quantity Inverse Time Overcurrent
Element (N, 1–3)
1
E81 Enable Frequency Elements (N, 4–6) N
E27 Enable Under Voltage Elements (N, 1–6) N
E59 Enable Over Voltage Elements (N, 1–6) N
E32 Directional Control (Y, AUTO, AUTO2) AUTO2
ECOMM Communications-Assisted Tripping (N, DCB, POTT,
POTT2, POTT3, DCUB1, DCUB2)
POTT
EBFL1 Breaker 1 Failure Logic (N, 1, 2, Y1, Y2) N
EBFL2 Breaker 2 Failure Logic (N, 1, 2, Y1, Y2) N
E25BK1 Synchronism Check for Breaker 1 (Y, N, Y1, Y2) N
E25BK2 Synchronism Check for Breaker 2 (Y, N, Y1, Y2) N
E79 Reclosing (Y, Y1, N) Y
EMANCL Manual Closing (Y, N) Y
ELOP Loss-of-Potential (Y, Y1, N) Y1
EDEM Demand Metering (N, THM, ROL) N
VMEMC
a
Memory Voltage Control (SELOGIC Equation) 0
EFID
b
Enable FID Logic (Y, N) Y
EADVS Advanced Settings (Y, N) N
Z50G1
b
Zone 1 Ground Distance Fault Detector (0.50–100.00 A,
secondary)
c
0.5 0.01
Z50P1
b
Zone 1 Phase Distance Fault Detector (0.50–170.00 A,
secondary)
c
0.5 0.01
a
Only available if EADVS = Y and ESERCMP = N.
b
Only available if EADVS = Y.
c
Range and default are for a 5 A relay. For a 1 A relay, divide the range and default by 5.
Table 8.36 Relay Configuration (Sheet 2 of 2)
Setting Prompt
Default
Value
Increment
NOTE: The SEL-421-4 does not
provide series-compensated line
protection logic. This setting is
unavailable in the SEL-421-4.