Schweitzer Engineering Laboratories SEL-311C - Page 340

SET.10 of 32 Settings Sheets for the SEL-311C Relay
Relay Settings (Serial Port Command SET and Front Panel)
SEL-311C Relay Instruction Manual Date Code 20060320
Date________________
Negative reverse load angle (+90.00° to +270.00°) NLAR =
Zone/Level 3 and 4 Directional Control
Zone/Level 3 direction: Forward, Reverse (F, R) DIR3 =
Zone/Level 4 direction: Forward, Reverse (F, R)
DIR4 =
Directional Elements (See Directional Control Settings on page 4.21)
(Make setting ORDER if preceding enable setting E32 = Y or AUTO.)
Ground directional element priority: combination of Q, V, or I
ORDER =
(Make settings Z2F, Z2R, 50QFP, 50QRP, a2, and k2 if preceding enable setting E32 = Y. If E32 =
AUTO, these settings are made automatically.)
Forward directional Z2 threshold
(–64.00–64.00 Ω secondary {5 A nom.};
–320.00–320.00 Ω secondary {1 A nom.})
Z2F =
Reverse directional Z2 threshold
(–64.00–64.00 Ω secondary {5 A nom.};
–320.00–320.00 Ω secondary {1 A nom.})
Z2R =
Forward directional 3I2 pickup
(0.25–5.00 A secondary {5 A nom.};
0.05–1.00 A secondary {1 A nom.})
50QFP =
Reverse directional 3I2 pickup
(0.25–5.00 A secondary {5 A nom.};
0.05–1.00 A secondary {1 A nom.})
50QRP =
Positive-sequence current restraint factor, I2/I1
(0.02–0.50, unitless)
a2 =
Zero-sequence current restraint factor, I2/I0
(0.10–1.20, unitless)
k2 =
(Make settings 50GFP, 50GRP, and a0 if preceding enable setting E32 = Y and preceding setting
ORDER contains V or I. If E32 = AUTO and ORDER contains V or I, these settings are made
automatically.)
Forward directional 3I0 pickup
(0.25–5.00 A secondary {5 A nom.};
0.05–1.00 A secondary {1 A nom.})
50GFP =
Reverse directional 3I0 pickup
(0.25–5.00 A secondary {5 A nom.};
0.05–1.00 A secondary {1 A nom.})
50GRP =
Positive-sequence current restraint factor, I0/I1
(0.02–0.50, unitless)
a0 =
(Make settings Z0F and Z0R if preceding enable setting E32 = Y and preceding setting ORDER
contains V. If E32 = AUTO and ORDER contains V, these settings are made automatically.)
Forward directional Z0 threshold
(–64.00–64.00 Ω secondary {5 A nom.})
(–320.00–320.00 Ω secondary {1 A nom.})
Z0F =