Schweitzer Engineering Laboratories SEL-351A - Page 358

SET.6
of 32
SEL-351A Settings Sheets
Relay Settings (Serial Port Command SET and Front Panel)
SEL-351A Relay Instruction Manual Date Code 20080213
Date________________
Negative-Sequence Definite-Time Overcurrent Elements (See Figure 3.12)
IMPORTANT: See Appendix F for information on setting negative-sequence overcurrent elements.
(Number of negative-sequence element time delay settings dependent on preceding enable setting E50Q = 1–6; all four time
delay settings are enabled if E50Q
≥ 4.)
Time delay (0.00–16000.00 cycles in 0.25 cycle steps) 67Q1D =
Time delay (0.00–16000.00 cycles in 0.25 cycle steps)
67Q2D =
Time delay (0.00–16000.00 cycles in 0.25 cycle steps)
67Q3D =
Time delay (0.00–16000.00 cycles in 0.25 cycle steps)
67Q4D =
Phase Time-Overcurrent Element (See Figure 3.14)
(Make the following settings if preceding enable setting E51P = 1 or 2.)
Pickup (OFF, 0.25–16.00 A {5 A nom.},
0.05–3.20 A {1 A nom.})
51PP =
Curve (U1–U5, C1–C5; see Figure 9.1–Figure 9.10)
51PC =
Time-Dial (0.50–15.00 for curves U1–U5,
0.05–1.00 for curves C1–C5)
51PTD =
Electromechanical Reset (Y, N)
51PRS =
A-Phase Time-Overcurrent Element (See Figure 3.15)
(Make the following settings if preceding enable setting E51P = 2.)
Pickup (OFF, 0.25–16.00 A {5 A nom.},
0.05–3.20 A {1 A nom.})
51AP =
Curve (U1–U5, C1–C5; see Figure 9.1–Figure 9.10)
51AC =
Time-Dial (0.50–15.00 for curves U1–U5,
0.05–1.00 for curves C1–C5)
51ATD =
Electromechanical Reset (Y, N)
51ARS =
B-Phase Time-Overcurrent Element (See Figure 3.16)
(Make the following settings if preceding enable setting E51P = 2.)
Pickup (OFF, 0.25–16.00 A {5 A nom.},
0.05–3.20 A {1 A nom.})
51BP =
Curve (U1–U5, C1–C5; see Figure 9.1–Figure 9.10)
51BC =
Time-Dial (0.50–15.00 for curves U1–U5,
0.05–1.00 for curves C1–C5)
51BTD =
Electromechanical Reset (Y, N)
51BRS =
C-Phase Time-Overcurrent Element (See Figure 3.17)
(Make the following settings if preceding enable setting E51P = 2.)
Pickup (OFF, 0.25–16.00 A {5 A nom.},
0.05–3.20 A {1 A nom.})
51CP =
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