SETTINGS SHEET Page 3 OF 10
FOR THE SEL-321/321-1 RELAY Date
(1 A NOMINAL RELAY)
Date Code 20011026
Out-of-Step Blocking and Tripping Settings
Enable OOS: (Y/N) EOOS = _________
OOSB Enable: Block Zone 1: (Y/N) OOSB1 = _________
Block Zone 2: (Y/N) OOSB2 = _________
Block Zone 3: (Y/N) OOSB3 = _________
Block Zone 4: (Y/N) OOSB4 = _________
Out-of-Step Block Time Delay (TDPU): (0.5 - 8000 cycles) OSBD = _________
Enable OOST: (I/O/N) EOOST = _________
Out-of-Step TOWI Time Delay (TDPU): (0.5 - 8000 cycles) OSTD = _________
Zone 5 Reactive Reach: Top: (0 to ±480 Ω sec.) X1T5 = _________
Bottom: (0 to ±480 Ω sec.) X1B5 = _________
Zone 5 Resistive Reach: Right: (0 to ±350 Ω sec.) R1R5 = _________
Left: (0 to ±350 Ω sec.) R1L5 = _________
Zone 6 Reactive Reach: Top: (0 to ±480 Ω sec.) X1T6 = _________
Bottom: (0 to ±480 Ω sec.) X1B6 = _________
Zone 6 Resistive Reach: Right: (0 to ±350 Ω sec.) R1R6 = _________
Left: (0 to ±350 Ω sec.) R1L6 = _________
Zone 6 Positive-Sequence Overcurrent Supervision: (0.2 - 20 amps sec., I
1
) 50ABC = _________
Load-Encroachment Settings
Enable Load-Encroachment: (Y/N) ELE = _________
Load Impedance: Forward: (0.25 - 320 Ω sec.) ZLF = _________
Reverse: (0.25 - 320 Ω sec.) ZLR = _________
Load Angle: Positive Forward: (-90° to +90°) PLAF = _________
Negative Forward: (-90° to +90°) NLAF = _________
Positive Reverse: (+90° to +270°) PLAR = _________
Negative Reverse: (+90° to +270°) NLAR = _________
Negative-Sequence Directional Element Settings
Forward Directional Z2 Threshold: (±320 Ω sec.) Z2F = _________
Forward Directional Current Threshold: (0.05 - 1 amps sec., 3I
2
) 50QF = _________
Reverse Directional Z2 Threshold: (±320 Ω sec.) Z2R = _________
Reverse Directional Current Threshold: (0.05 - 1 amps sec., 3I
2
) 50QR = _________
Positive-Sequence Current Restraint Factor: (0.02 - 0.5 unitless) a2 = _________
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