5-30 Applications Date Code 20011026
SEL-321/321-1 Instruction Manual
SETTINGS SHEET Page 4 OF 10
FOR THE SEL-321/321-1 RELAY Date
(5 A
NOMINAL RELAY)
Phase Time-Overcurrent Element Settings
Phase Time Overcurrent Element: Enable: (Y/N) E51P = N
Pickup: (0.5 - 16 amps sec.) 51PP =
Curve Family: (U1, U2, U3, U4, C1, C2, C3, C4) 51PC =
Time Dial: (US 0.5 - 15, IEC 0.05 - 1) 51PTD =
Reset Delay: (Y/N) 51PRS =
Torque Control: (M2P, N) (SEL-321 Relay Base Version) 51PTC =
(ZLIN, ZLOUT, M2P, N) (SEL-321-1 Relay)
Residual Time-Overcurrent Element Settings
Residual Time Overcurrent Element: Enable: (Y/N/S) E51N = Y
Pickup: (0.5 - 16 amps sec., 3I0) 51NP = 0.75
Curve Family: (U1, U2, U3, U4, C1, C2, C3, C4) 51NC = U3
Time Dial: (US 0.5 - 15, IEC 0.05 - 1) 51NTD = 2.00
Reset Delay: (Y/N) 51NRS = Y
Torque Control: (32QF, 32QR, Z2G, N) 51NTC = 32QF
Residual Overcurrent Element Settings
Enable Number of Residual Instantaneous Overcurrent Levels: (N, 1, 2, 3, 4) E50N = N
Residual Inst. Overcurrent Pickup: Level 1: (0.25 - 80 amps sec., 3I0) 50N1 =
Level 2: (0.25 - 80 amps sec., 3I0) 50N2 =
Level 3: (0.25 - 80 amps sec., 3I0) 50N3 =
Level 4: (0.25 - 80 amps sec., 3I0) 50N4 =
Negative-Sequence Time Overcurrent Element Settings
Negative-Sequence Time Overcurrent: Enable: (Y/N/S) E51Q = Y
Pickup: (0.5 - 16 amps sec., 3I2) 51QP = 2.2
Curve Family: (U1, U2, U3, U4, C1, C2, C3, C4) 51QC = U3
Time Dial: (US 0.5 - 15, IEC 0.05 - 1) 51QTD = 2.00
Reset Delay: (Y/N) 51QRS = N
Torque Control: (32QF, 32QR, M2P, Z2G, N) 51QTC = 32QF
Negative-Sequence Overcurrent Element Settings
Enable Number of Neg.-Sequence Inst. Overcurrent Levels: (N, 1, 2, 3, 4) E50Q = N
Neg.-Seq. Inst. Overcurrent Pickup: Level 1: (0.25 - 80 amps sec., 3I2) 50Q1 =
Level 2: (0.25 - 80 amps sec., 3I2) 50Q2 =
Level 3: (0.25 - 80 amps sec., 3I2) 50Q3 =
Level 4: (0.25 - 80 amps sec., 3I2) 50Q4 =
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