Sel SEL-487E-3 - Page 30

SEL-487E-3, -4 Data Sheet Schweitzer Engineering Laboratories, Inc.
30
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
Maximum Operating Time: 1.75 cycles at 90% of reach and SIR = 1
Quadrilateral Phase Distance Elements
Zones 1—4 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
Zones 1, 2, and 3
5 A Model: OFF, 0.05 to 50  secondary, 0.01 steps
1 A Model: OFF, 0.25 to 250 secondary, 0.01  steps
Zones 4
5 A Model: OFF, 0.05 to 150  secondary, 0.01 steps
1 A Model: OFF, 0.25 to 750  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
Maximum Operating Time: 1.75 cycles at 90% of reach and SIR = 1
Mho Ground Distance Elements
Zones 1—4 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
Maximum Operating Time: 1.75 cycles at 90% of reach and SIR = 1
Quadrilateral Ground Distance Elements
Zones 1—4 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
Zones 1, 2, and 3
5 A Model: OFF, 0.05 to 50  secondary, 0.01 steps
1 A Model: OFF, 0.25 to 250 secondary, 0.01  steps
Zones 4
5 A Model: OFF, 0.05 to 150  secondary, 0.01 steps
1 A Model: OFF, 0.25 to 750  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
Transient Overreach: <5% of setting plus steady-state accuracy
Maximum Operating Time: 1.75 cycles at 90% of reach and SIR = 1
Out-of-Step Elements
Blinders (R1) Parallel to the Line Angle
5 A Model: 0.05 to 140  secondary
–0.05 to –140  secondary
1 A Model: 0.25 to 700  secondary
–0.25 to –700  secondary
Blinders (X1) Perpendicular to Line Angle
5 A Model: 0.05 to 140  secondary
–0.05 to –140  secondary
1 A Model: 0.25 to 700  secondary
–0.25 to –700  secondary
Accuracy (Steady State)
5 A Model: ±5% of setting plus ±0.01 A for SIR
(source to line impedance ratio) < 30
±10% of setting plus ±0.01 A for 30  SIR
60
1 A Model: ±5% of setting plus ±0.05 A for SIR
(source to line impedance ratio) < 30
±10% of setting plus ±0.05 A for 30  SIR
60
Negative-Sequence Supervision
Setting Range
5 A Model: 0.5–100.0 A, 0.01 A steps
1 A Model: 0.1–20.0 A, 0.01 A steps
Accuracy (Steady State)
5 A Model: ±3% of setting plus ±0.05 A
1 A Model: ±3% of setting plus ±0.01 A
Transient Overreach: <5% of setting
Instantaneous/Definite-Time Overcurrent Elements (50)
Phase- and Negative-Sequence, Ground-Residual Elements
Pickup Range
5 A Nominal: 0.25–100.00 A secondary, 0.01-A steps
1 A Nominal: 0.05–20.00 A secondary, 0.01-A steps
Accuracy (Steady State)
5 A Nominal: ±0.05 A plus ±3% of setting
1 A Nominal: ±0.01 A plus ±3% of setting
Transient Overreach (Phase and Ground Residual)
5 A Nominal: ±5% of setting, ±0.10 A
1 A Nominal: ±5% of setting, ±0.02 A
Transient Overreach (Negative Sequence)
5 A Nominal: ±6% of setting, ±0.10 A
1 A Nominal: ±6% of setting, ±0.02 A
Time-Delay Range: 0.00–16000.00 cycles, 0.125 cycle steps
Timer Accuracy: ±0.25 cycle plus ±0.1% of setting
Maximum Pickup/Dropout
Time: 1.5 cycles