8.32
SEL-421 Relay Instruction Manual Date Code 20171021
Settings
Group Settings
Make Table 8.77 settings if Group settings E79 := Y or Y1 or EMANCL := Y.
Make Table 8.78 settings if Group setting EDEM := THM or ROL.
3PFARC Three-Pole Fast Automatic Reclose Enable
(SEL
OGIC Equation)
NA
3PFOID Three-Pole Fast Open Interval Delay
(1–99999 cycles)
60 1
3PRCD Three-Pole Reclaim Time Delay (1–99999 cycles) 900 1
3PRI Three-Pole Reclose Initiation (SEL
OGIC Equation) 3PT AND NOT
(M2PT OR
Z2GT OR
M3PT OR
Z3GT OR
SOTFT)
79SKP Skip Reclosing Shot (SEL
OGIC Equation) NA
3P1CLS Three-Pole BK 1 Reclose Supervision
(SEL
OGIC Equation)
b
1
3P2CLS Three-Pole BK 2 Reclose Supervision
(SEL
OGIC Equation)
b
1
a
Adjust all timers in 1-cycle steps.
b
These settings cannot be set to NA or to logical 0.
Table 8.77 Voltage Elements
Setting Prompt
Default
Value
Increment
EVCK Reclosing Voltage Check (Y, N) N
27LP Dead Line Voltage (1.0–200 V secondary) 14.0 0.1
59LP Live Line Voltage (1.0–200 V secondary) 53.0 0.1
27BK1P Breaker 1 Dead Busbar Voltage (1.0–200 V secondary) 14.0 0.1
59BK1P Breaker 1 Live Busbar Voltage (1.0–200 V secondary) 53.0 0.1
27BK2P Breaker 2 Dead Busbar Voltage (1.0–200 V secondary) 14.0 0.1
59BK2P Breaker 2 Live Busbar Voltage (1.0–200 V secondary) 53.0 0.1
Table 8.78 Demand Metering
Setting Prompt
Default Value
Increment
5 A 1 A
DMTC Demand Metering Time Constant (5, 10, . . . , 300
minutes)
15 15 5
PDEMP Phase Current Pickup
(OFF, 0.50–16 A secondary) 5 A
(OFF, 0.10–3.2 A secondary) 1 A
OFF OFF 0.01
GDEMP Residual Ground Current Pickup
(OFF, 0.50–16 A secondary) 5 A
(OFF, 0.10–3.2 A secondary) 1 A
OFF OFF 0.01
QDEMP Negative-Sequence Current Pickup
(OFF, 0.50–16 A secondary) 5 A
(OFF, 0.10–3.2 A secondary) 1 A
OFF OFF 0.01
Table 8.76 Three-Pole Reclose Settings
a
(Sheet 2 of 2)
Setting Prompt Default Value Increment
To Next Page
Loading...
