SET.6
of 26
SEL-351A-1 Settings Sheets
Relay Settings (Serial Port Command SET and Front Panel)
SEL-351A-1 Relay Instruction Manual Date Code 20080213
Date________________
Residual-Ground Time-Overcurrent Element (See Figure 3.19)
(Make the following settings if preceding enable setting E51G = Y.)
Pickup (OFF, 0.10–16.00 A {5 A nom.},
0.02–3.20 A {1 A nom.})
51GP =
Curve (U1–U5, C1–C5; see Figure 9.1–Figure 9.10)
51GC =
Time-Dial (0.50–15.00 for curves U1–U5,
0.05–1.00 for curves C1–C5)
51GTD =
Electromechanical Reset (Y, N)
51GRS =
Negative-Sequence Time-Overcurrent Element (See Figure 3.21)
IMPORTANT: See Appendix F for information on setting negative-sequence overcurrent elements.
(Make the following settings if preceding enable setting E51Q = Y.)
Pickup (OFF, 0.25–16.00 A {5 A nom.},
0.05–3.20 A {1 A nom.})
51QP =
Curve (U1–U5, C1–C5; see Figure 9.1–Figure 9.10)
51QC =
Time-Dial (0.50–15.00 for curves U1–U5,
0.05–1.00 for curves C1–C5)
51QTD =
Electromechanical Reset (Y, N)
51QRS =
Voltage Elements (See Figure 3.22, Figure 3.23, Figure 3.24, Figure 3.25, and
Figure 3.26)
(Make the following settings if preceding enable setting EVOLT =Y and global setting PTCONN = WYE.)
Phase undervoltage pickup (OFF, 0.00–300.00 V secondary) 27P1P =
Phase undervoltage pickup (OFF, 0.00–300.00 V secondary)
27P2P =
Phase overvoltage pickup (OFF, 0.00–300.00 V secondary)
59P1P =
Phase overvoltage (OFF, 0.00–300.00 V secondary)
59P2P =
Zero-sequence (3V0) overvoltage pickup
(OFF, 0.00–300.00 V secondary)
59N1P =
Zero-sequence (3V0) overvoltage pickup
(OFF, 0.00–300.00 V secondary)
59N2P =
Negative-sequence (V2) overvoltage pickup
(OFF, 0.00–200.00 V secondary)
59QP =
Positive-sequence (V1) overvoltage pickup
(OFF, 0.00–300.00 V secondary)
59V1P =
Phase-to-phase undervoltage pickup
(OFF, 0.00–520.00 V secondary)
27PP =
Phase-to-phase overvoltage pickup
(OFF, 0.00–520.00 V secondary)
59PP =
(Make the following settings if preceding enable setting EVOLT = Y and global setting PTCONN = DELTA.)
Negative-sequence (V2) overvoltage pickup
(OFF, 0.00–120.00 V secondary)
59QP =
Courtesy of NationalSwitchgear.com
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