Schweitzer Engineering Laboratories SEL-321 - Page 50

2-26 Specifications Date Code 20011026
SEL-321/321-1 Instruction Manual
Element Comment
3P50R
51NP
51QP
51PP
50G
50PP
50M
50L
REJO Logic Overcurrent Element Pickup
Residual Time-Overcurrent Element Pickup
Negative-Sequence Time-Overcurrent Element Pickup
Phase Time-Overcurrent Element Pickup
50G1 + 50G2 + 50G3 + 50G4
50PP1 + 50PP2 + 50PP3 + 50PP4
Medium-Set Phase Overcurrent
50L1 + 50L2 + 50L3 + 50L4
50Q4
50Q3
50Q2
50Q1
50N4
50N3
50N2
50N1
Level 4 Nondirectional Neg.-Seq. Overcurrent, Instantaneous
Level 3 Nondirectional Neg.-Seq. Overcurrent, Instantaneous
Level 2 Nondirectional Neg.-Seq. Overcurrent, Instantaneous
Level 1 Nondirectional Neg.-Seq. Overcurrent, Instantaneous
Level 4 Nondirectional Residual Overcurrent, Instantaneous
Level 3 Nondirectional Residual Overcurrent, Instantaneous
Level 2 Nondirectional Residual Overcurrent, Instantaneous
Level 1 Nondirectional Residual Overcurrent, Instantaneous
50ABC
X6ABC
X5ABC
3PT
TPC
TPB
TPA
32QF
OOS Supervising Overcurrent Element, Pos.-Seq., Instantaneous
Zone 6, Out-of-Step Distance Element, Instantaneous
Zone 5, Out-of-Step Distance Element, Instantaneous
Three-Pole Trip
Trip C
Trip B
Trip A
Negative-Sequence Directional Element: Forward
3P59
59L
59N
59PR
59PB
59QL
59PL
50Q
Three-Phase Overvoltage Element
Single-Phase Overvoltage Element
Residual Overvoltage Element Status
Current Compensated Positive-Sequence Overvoltage Element Status
Local Positive-Sequence Overvoltage Element Status
Loss-of-Potential Negative-Sequence Overvoltage Element Status
Loss-of-Potential Positive-Sequence Overvoltage Element Status
50QF + 50QR
BTX
*
STOP
START
FIDEN
FSC
FSB
FSA
Block Trip Input Extension (active if EDCB = Y)
Reserved for future use
Carrier Stop for DCB (active if EDCB = Y)
Carrier Start for DCB (active if EDCB = Y)
FIDS Logic Enable
FIDS logic selects C-phase
FIDS logic selects B-phase
FIDS logic selects A-phase