Schweitzer Engineering Laboratories SEL-487V - Page 28

SEL-487V Data Sheet Schweitzer Engineering Laboratories, Inc.
28
Relay Element Pickup Ranges and Accuracies
Phase-Voltage Differential Elements
Number of Elements: 3
Levels: 3 (Sensitive, Alarm, and Trip)
Pickup Range: Magnitude: 0.1 V to 300.00 V
Pickup Accuracy, Steady-
State: ±0.1% of set point
Maximum
Pickup/Dropout Time: 2.5 cycles
Timers: 3 levels with individual timers for each
level (0.00 to 6000.00 seconds with 0.01
second resolution)
Time-Delay Range: 0.00–64000 cycles
Time-Delay Accuracy: ±0.1% ± 4.2 ms at 60 Hz
Reset Time Range: 0.00–64000 cycles
Torque Control: SEL
OGIC control equation
K Factor (Compensation)
Range:
0.0000 to 1.9999 with 0.0001 resolution
Neutral-Voltage Differential Elements
Number of Elements: 3
Levels: 3 (Sensitive, Alarm, and Trip)
Pickup Range: Magnitude: 0.1 V to 300.00 V
Angle: –179.00 to 180.00 degrees
Pickup Accuracy, Steady-
State: ±0.1% of set point
Maximum
Pickup/Dropout Time: 2.5 cycles
Timers: 3 levels with individual timers for each
level (0.00 to 6000.00 seconds with 0.01
second resolution)
Time-Delay Range: 0.00–64000 cycles
Time-Delay Accuracy: ±0.1% ± 4.2 ms at 60 Hz
Reset Time Range: 0.00–64000 cycles
Torque Control: SEL
OGIC control equation
K Factor (Compensation)
Range: 0.00 to 300.00 with 0.01 resolution
Phase-Current Unbalance Elements
Number of Elements: 3
Pickup Range: Magnitude: 0.005 to 20.00 per unit (I
NOM
)
Pickup Accuracy, Steady-
State: 0.05 per unit ± 1% of set point
Maximum
Pickup/Dropout Time:
2.5 cycles for I > 0.05 per unit
10 cycles for 0.002 < I < 0.05 per unit
Time-Delay Range: 0.00–16000 cycles
Reset Time Range: 0.00–16000 cycles
Time-Delay Accuracy: ±0.1% ± 4.2 ms at 60 Hz
Torque Control: SEL
OGIC control equation
Neutral-Current Unbalance Elements
Number of Elements: 3
Pickup Range: Magnitude: 0.005 to 20.00 per unit (I
NOM
)
Pickup Accuracy, Steady-
State: 0.05 per unit ± 1% of set point
Maximum
Pickup/Dropout Time:
2.0 cycles for I > 0.05 per unit
10 cycles for 0.002 < I < 0.05 per unit
Time-Delay Range: 0.00–400.0 s
Reset Time Range: 0.00–400.00 s
Time-Delay Accuracy: ±0.1% ± 4.2 ms at 60 Hz
Torque Control: SEL
OGIC control equation
Three Phase-Current Unbalance Elements
Number of Elements: 3 (W current channels only)
Pickup Range: 0.00 to 2.00 per unit (I
NOM
)
Pickup Accuracy, Steady-
State: ±1% of set point
Maximum
Pickup/Dropout Time: 1.5 cycles
Time-Delay Range: 0.00–400.0 s
Time-Delay Accuracy: ±0.1% ± 4.2 ms at 60 Hz
Open-Phase Detection Logic
Number of Elements: 3 (W current channels only)
Pickup Range
1 A nominal: 0.05–1.00 A
5 A nominal: 0.25–5.00 A
Maximum
Pickup/Dropout Time: 0.625 cycles
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 settings
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, 0.250 cycle steps
Timer Accuracy: ±0.250 cycle ± 0.1% of setting
Maximum
Pickup/Dropout Time: 1.5 cycles
Adaptive-Time Overcurrent Elements (51)
Pickup Range (Adaptive within the range)
5 A nominal: 0.25–16.00 A secondary, 0.01 A steps
1 A nominal: 0.05–3.20 A secondary, 0.01 A steps
Accuracy (Steady-State)
5 A nominal: ±0.05 A ± 3% of setting
1 A nominal: ±0.01 A ± 3% of settings
Transient Overreach
5 A nominal: ±5% of setting, ± 0.10 A
1 A nominal: ±5% of setting, ± 0.20 A
Time Dial Range (Adaptive within the range)
U.S.: 0.50–15.00, 0.01 steps
IEC: 0.05–1.00, 0.01 steps
Curve Timing Accuracy: ±1.50 cycles plus ±4% of curve time (for
current between 2 and 30 multiples of
pickup). Curves operate on definite-time
for current greater than 30 multiples of
pickup.
Reset: 1 power cycles or Electromechanical
Reset Emulation time
Phase Under- and Overvoltage Elements
Based on maximum of the VA, VB, and VC phase voltages
Pickup Range: 0.25 V–300 V
LN
in 0.01 steps