Schweitzer Engineering Laboratories SEL-321 - Page 208

5-32 Applications Date Code 20011026
SEL-321/321-1 Instruction Manual
SETTINGS SHEET Page 6 OF 10
FOR THE SEL-321/321-1 RELAY Date
(5 A
NOMINAL RELAY)
Directional Comparison Blocking Scheme Settings
Enable DCB: (Y/N) EDCB =
Zone 3 Dropout Extension Time Delay (TDDO): (0 - 2000 cycles) Z3XD =
Block Trip Receive Extension Time Delay (TDDO): (0 - 2000 cycles) BTXD =
Zone 2 Phase Distance Short Delay Time Delay (TDPU): (0 - 60 cycles) Z2PSD =
Zone 2 Ground Distance Short Delay Time Delay (TDPU): (0 - 60 cycles) Z2GSD =
Level 2 Residual Short Delay Time Delay (TDPU): (0 - 60 cycles) 67N2SD =
Level 2 Neg.-Seq. Short Delay Time Delay (TDPU): (0 - 60 cycles) 67Q2SD =
Zone 1 Extension Settings
Enable Zone 1 Extension: (Y/N) EZ1EXT = N
Enable Time Delay (TDPU): (0 - 2000 cycles) Z1EXTD =
Multiplier: (1 - 5 unitless) Z1EXTM =
Remote-End-Just-Opened Settings
Enable: (Y/N) EREJO = N
Pickup Time Delay (TDPU): (0 - 2000 cycles) REJOD =
Overcurrent Element Pickup: (0.5 - 100 amps sec.) 3P50R =
Switch-Onto-Fault Settings
Enable: (Y/N) ESOTF = Y
Enable Close Logic: (Y/N) ENCLO = Y
Close Enable Time Delay (TDPU): (0 - 8000 cycles) CLOEND = 10.00
Enable 52A Logic: (Y/N) EN52A = N
52A Enable Time Delay (TDPU): (0 - 8000 cycles) 52AEND =
Time Duration (TDDO): (0.5 - 8000 cycles) SOTFD = 30.00
High-Set Phase Overcurrent Pickup: (0.5 - 100 amps sec.) 50H = 11.25
Loss-of-Potential Settings
Enable Loss-Of-Potential: (Y, N, N1, Y1, Y2) ELOP = Y
Loss-Of-Potential Time Delay (TDPU): (1 - 60 cycles) LOPD = 3
Medium-Set Phase Overcurrent Pickup: (0.5 - 100 amps sec.) 50M = 2.37
Negative-Sequence Voltage LOP supervision: (0 - 150 V sec., V2) 59QL = 14.00
Positive-Sequence Voltage LOP supervision: (0 - 150 V sec., V1) 59PL = 14.00