Sel 411L - Page 59

P.1.17
Date Code 20151029 Protection Manual SEL-411L Relay
Introduction and Specifications
Specifications
Negative-Sequence
Setting Range (normal): OFF, 0.10 to 2.00 per unit, 0.01 pu steps
Setting Range (secure): OFF, 0.10 to 2.00 per unit, 0.01 pu steps
Zero-Sequence Setting
Setting Range (normal): OFF, 0.10 to 2.00 per unit, 0.01 pu steps
Setting Range (secure): OFF, 0.10 to 2.00 per unit, 0.01 pu steps
Accuracy: ±3% ±0.01 I
NOM
Restraint Characteristics
Outer Radius (Phase, Negative-Sequence, Zero-Sequence)
Radius Range (normal): 1.2 to 8 in steps of 0.01 (unitless)
Radius Range (secure): 1.2 to 8 in steps of 0.01 (unitless)
Angle Range (normal): 90–270° in steps of 1°
Angle Range (secure): 90–270° in steps of 1°
Accuracy: ±5% of radius setting
±3° of angle setting
Line Charging Current Compensation
Positive-Sequence Line
Susceptance Setting
Range: 0.00 to 250 mS, 0.01 mS steps
Zero-Sequence Line
Susceptance Setting
Range: 0.00 to 100 mS, 0.01 mS steps
In-Line Transformer
MVA Setting Range: 1 to 5,000, 1 MVA steps
Vector Group
Compensation: 360°, 30° steps
Line-to-line Setting
Range: 1.00 to 1,000 kV, 0.01 kV steps
Harmonic restraint: 2nd, 4th Setting Range: OFF, 5 to
100%, 1% steps
Harmonic blocking: 2nd, 4th and 5th Setting Range: OFF, 5
to 100%, 1% steps
Mho Phase Distance Elements
Zones 1–5 Impedance Reach
Setting Range
5 A Model: OFF, 0.05 to 64  secondary,
0.01  steps
1 A Model: OFF, 0.25 to 320 secondary,
0.01  steps
Sensitivity
5 A Model: 0.5 A
P-P
secondary
1 A Model: 0.1 A
P-P
secondary
(Minimum sensitivity is controlled
by the pickup of the supervising
phase-to-phase overcurrent elements
for each zone.)
Accuracy (Steady State): 3% of setting at line angle for SIR
(source-to-line impedance ratio) < 30
±5% of setting at line angle for
30  SIR  60
Zone 1 Transient
Overreach:
< 5% of setting plus steady-state
accuracy
Relay Version -1
Maximum Operating
Time: 0.8 cycle at 70% of reach and SIR = 1
Relay Version -0
Maximum Operating
Time: 1.5 cycle at 70% of reach and SIR = 1
Quadrilateral Phase Distance Elements
Zones 1–5 Impedance Reach
Quadrilateral Reactance Reach
5 A Model: OFF, 0.05 to 64  secondary,
0.01  steps
1 A Model: OFF, 0.25 to 320 secondary,
0.01  steps
Quadrilateral Resistance Reach
5 A Model: OFF, 0.05 to 50  secondary,
0.01  steps
1 A Model: OFF, 0.25 to 250 secondary,
0.01  steps
Sensitivity
5 A Model: 0.5 A secondary
1 A Model: 0.1 A secondary
Accuracy (Steady State): ±3% of setting at line angle for SIR< 30
±5% of setting at line angle for
30  SIR  60
Transient Overreach: < 5% of setting plus steady-state
accuracy
Mho Ground Distance Elements
Zones 1–5 Impedance Reach
Mho Element Reach
5 A Model: OFF, 0.05 to 64  secondary,
0.01  steps
1 A Model: OFF, 0.25 to 320 secondary,
0.01  steps
Sensitivity
5 A Model: 0.5 A secondary
1 A Model: 0.1 A secondary
(Minimum sensitivity is controlled
by the pickup of the supervising
phase and residual overcurrent
elements for each zone.)
Accuracy (Steady State): ±3% of setting at line angle for SIR <30
±5% of setting at line angle for
30  SIR  60
Zone 1 Transient
Overreach:
< 5% of setting plus steady-state
accuracy
Relay Version -1
Maximum Operating
Time: 0.8 cycle at 70% of reach and SIR = 1
Relay Version -0
Maximum Operating
Time: 1.5 cycle at 70% of reach and SIR = 1
Quadrilateral Ground Distance Elements
Zones 1–5 Impedance Reach
Quadrilateral Reactance Reach
5 A Model: OFF, 0.05 to 64  secondary,
0.01  steps
1 A Model: OFF, 0.25 to 320 secondary,
0.01  steps
Quadrilateral Resistance Reach
5 A Model: OFF, 0.05 to 50  secondary, 0.01 
steps
1 A Model: OFF, 0.25 to 250 secondary, 0.01 
steps