Schweitzer Engineering Laboratories SEL-421-4 - Page 486

6.150
SEL-421 Relay Instruction Manual Date Code 20171021
Protection Applications Examples
Autoreclose and Synchronism-Check Example
N3PSHOT Number of Three-Pole Reclosures (N, 1–4) 1
E3PR1 Three-Pole Reclose Enable—BK1 (SEL
OGIC Equation) IN207
E3PR2 Three-Pole Reclose Enable—BK2 (SEL
OGIC Equation) IN208
TBBKD Time Between Breakers for Automatic Reclose
(1–99999 cycles)
15
BKCFD Breaker Close Failure Delay (OFF, 1–99999 cycles) 600
SLBK1 Lead Breaker = Breaker 1(SEL
OGIC Equation) IN107
SLBK2 Lead Breaker = Breaker 2 (SEL
OGIC Equation) 0
FBKCEN Follower Breaker Closing Enable (SEL
OGIC Equation) 3POBK2 OR NOT
LEADBK1
ULCL1 Unlatch Closing for Breaker 1 (SEL
OGIC Equation) 52AA1 AND 52AB1
AND 52AC1
ULCL2 Unlatch Closing for Breaker 2 (SEL
OGIC Equation) 52AA2 AND 52AB2
AND 52AC2
79DTL Recloser Drive to Lockout (SEL
OGIC Equation) LOP
79BRCT Block Reclaim Timer (SEL
OGIC Equation) NA
3PMRCD Manual Close Reclaim Time Delay (1–99999 cycles) 900
BK1CLSD BK1 Reclose Supervision Delay (OFF, 1–99999 cycles) 300
BK2CLSD BK2 Reclose Supervision Delay (OFF, 1–99999 cycles) 300
Single-Pole Reclose (Group)
SPOID Single-Pole Open Interval Delay (1–99999 cycles) 60
SPRCD Single-Pole Reclaim Time Delay (1–99999 cycles) 900
SPRI Single-Pole Reclose Initiation (SEL
OGIC Equation) SPT AND (Z1G
AND COMPRM)
SP1CLS
a
Single-Pole BK1 Reclose Supervision (SELOGIC control
equation)
1
SP2CLS
a
Single-Pole BK2 Reclose Supervision
(SELOGIC Equation)
NOT LEADBK1
Three-Pole Reclose (Group)
3POID1 Three-Pole Open Interval 1 Delay (1–99999 cycles) 30
3PFARC Three-Pole Fast autoreclose Enable (SEL
OGIC Equation) NA
3PRCD Three-Pole Reclaim Time Delay (1–99999 cycles) 900
3PRI Three-Pole autoreclose Initiate (SEL
OGIC Equation) 3PT AND (Z1P OR
COMPRM)
79SKP Skip Reclosing Shot (SEL
OGIC Equation) NA
3P1CLS
a
Three-Pole BK 1 Reclose Supervision
(SEL
OGIC Equation)
DLLB1
3P2CLS
a
Three-Pole BK 2 Reclose Supervision
(SEL
OGIC Equation)
25A2BK2 OR (NOT
LEADBK1 AND
DLLB2)
Voltage Elements (Group)
EVCK Reclosing Voltage Check (Y, N) Y
27LP Dead Line Voltage (1.0–200 V secondary) 15.0
59LP Live Line Voltage (1.0–200 V secondary) 50.0
Table 6.40 Settings for Autoreclose and Synchronism Check Example
(Sheet 2 of 3)
Setting Prompt Entry