Sel SEL-487E-5 - Metering Accuracy

SEL-487E Data Sheet Schweitzer Engineering Laboratories, Inc.
32
Undervoltage and Overvoltage Elements
Pickup Ranges
Phase Elements: 2–300 V
L-N
in 0.01-V steps
Phase-to-Phase Elements: 4–520 V
L-L
in 0.01-V steps
Sequence Elements: 2–300 V
L-N
in 0.01-V steps
Pickup Accuracy (Steady State)
Phase Elements: ±3% of setting, ±0.5 V
Phase-to-Phase Elements
(Wye): ±3% of setting, ±0.5 V
Phase-to-Phase Elements
(Delta): ±3% of setting, ±1 V
Sequence Elements: ±5% of setting, ±1 V
Pickup Accuracy (Transient Overreach)
Phase Elements: ±5%
Phase-to-Phase Elements
(Wye): ±5%
Phase-to-Phase Elements
(Delta): ±5%
Sequence Elements: ±5%
Maximum Pickup/Dropout Time
Phase Elements: 1.5 cycles
Phase-to-Phase Elements
(Wye): 1.5 cycles
Sequence Elements: 1.5 cycles
Under- and Overfrequency Elements
Pickup Range: 40.01–69.99 Hz, 0.01-Hz steps
Accuracy, Steady State Plus
Transient:
±0.005 Hz for frequencies between 40.00
and 70.00 Hz
Maximum Pickup/Dropout
Time: 3.0 cycles
Time-Delay Range: 0.04–300.00 s, 0.001-s increment
Time-Delay Accuracy: ±0.1% ±0.0042 s
Pickup Range, Undervoltage
Blocking:
20.00–200.00 V
L-N
(Wye) or V
L-L
(Open-
Delta)
Pickup Accuracy,
Undervoltage Blocking: ±2% ±0.5 V
Volts/Hertz Elements (24)
Definite-Time Element
Pickup Range: 100% to 200% steady state
Pickup Accuracy, Steady-
State: ±1% of set point
Maximum Pickup/Dropout
Time: 1.5 cycles
Time-Delay Range: 0.0–400.00 s
Time-Delay Accuracy: ±0.1% ±4.2 ms @ 60 Hz
Reset Time-Delay Range: 0.00–400.00 s
User-Definable Curve Element
Pickup Range: 100% to 200%
Pickup Accuracy: ±1% of set point
Reset Time-Delay Range: 0.00–400.00 s
Breaker Failure Instantaneous Overcurrent
Setting Range
5 A Nominal: 0.50–50 A, 0.01-A steps
1 A Nominal: 0.10–10.0 A, 0.01-A steps
Accuracy
5 A Nominal: ±0.05 A, ±3% of setting
1 A Nominal: ±0.01 A, ±3% of setting
Transient Overreach
5 A Nominal: ±5%, ±0.10 A
1 A Nominal: ±5%, ±0.02 A
Maximum Pickup Time: 1.5 cycles
Maximum Dropout Time: Less than 1 cycle
Maximum Reset Time: Less than 1 cycle
Timers
Setting Range: 0–6000 cycles, 0.125-cycle steps
Time-Delay Accuracy: ±0.1% of setting ±0.125 cycle
Directional Overpower/Underpower Element
Operating Quantities: OFF, 3PmF, 3QmF,3PqpF, 3QqpF
(m = S, T, U, W, X, Y
qp = ST, TU, UW, WX)
Pickup Range: –20000.00 VA (secondary) to 20000.00 VA
(secondary, 0.01 steps)
Pickup range cannot fall within  I
NOM
Pickup Accuracy: ±3% of setting and ±5 VA, power factor
>±0.5 at nominal frequency
Time-Delay Range: 0.000–16,000 cycles, 0.25-cycle increment
Time-Delay Accuracy: ±0.1% of setting ±0.25 cycle
Bay Control
Breakers: 6 maximum
Disconnects (Isolators): 20 maximum
Timers
Setting Range: 1–99999 cycles, 1-cycle steps
Time-Delay Accuracy: ±0.1% of setting ±0.25 cycle
Station DC Battery System Monitor Specifications
Rated Voltage: 24–250 Vdc
Operational Voltage Range: 0–300 Vdc
Sampling Rate: 2 kHz
Processing Rate: 1/8 cycle
Operating Time: Less than 1.5 cycles (all elements except ac
ripple)
Less than 1.5 seconds (ac ripple element)
Setting Range
15–300 Vdc, 1 Vdc steps (all elements except ac ripple)
1–300 Vac, 1 Vac steps (ac ripple element)
Accuracy
Pickup Accuracy: ±3% ± 2 Vdc (all elements except ac
ripple)
±10% ± 2 Vac (ac ripple element)
Metering Accuracy
All metering accuracies are based on an ambient temperature of 20°C and
nominal frequency.
Absolute Phase-Angle Accuracy
IA, IB, and IC per
Terminal: ±0.5° (both 1 and 5 A)
VA, VB, and VC Per
Terminal: ±0.125°
Currents
Phase Current Magnitude
5 A Model: ±0.2% plus ±4 mA (2.5–15 A sec)
1 A Model: ±0.2% plus ±0.8 mA (0.5–3.0 A sec)