Schweitzer Engineering Laboratories, Inc.
SEL-451 Data Sheet
29
Power Supply Immunity:
IEC 61000
-
4
-
11:2004
IEC 60255
-
11:2008
IEC 61000
-
4
-
29:2000
Radiated Digital
Radio Telephone
RF Immunity:
ENV 50204:1995
10 V/m at 900 MHz and 1.89 GHz
Radiated Radio Frequency
Immunity:
IEC 60255
-
22
-
3:2007, 10 V/m
IEC 61000
-
4
-
3:2010, 10 V/m
IEEE C37.90.2
-
2004, 35 V/m
Surge Immunity:
IEC 60255
-
22
-
5:2008
IEC 61000
-
4
-
5:2005
1 kV line-to-line, 2 kV line-to-earth
Note:
Cables connected to EIA-232 communications ports shall be less than
10 m in length for Zone A compliance.
Damped Oscillatory
Magnetic Field:
IEC 61000-4-10:2001
Severity Level: 100 A/m
Surge Withstand
Capability
Immunity:
IEC 60255
-
22
-
1:2007
2.5 kV peak common mode
1.0 kV peak differential mode
IEEE C37.90.1
-
2002
2.5 kV oscillatory
4.0 kV fast transient
Environmental
Cold:
IEC 60068
-
2
-
1:2007
16 hours at –40°C
Damp Heat, Cyclic:
IEC 60068
-
2
-
30:2005
25° to 55°C, 6 cycles, 95% humidity
Dry Heat:
IEC 60068
-
2
-
2:2007
16 hours at +85°C
Vibration:
IEC 60255-21-1:1988
Severity Level: Class 2 (Endurance);
Class 2 (Response)
IEC 60255-21-2:1988
Severity Level: Class 1 (Shock
Withstand, Bump); Class 2 (Shock
Response)
IEC 60255-21-3:1993
Severity Level: Class 2 (Quake
Response)
Safety
Dielectric Strength:
IEC 60255
-
5:2000
IEEE C37.90
-
2005
2500 Vac on contact inputs, contact
outputs, and analog inputs
3100 Vdc on power supply
Impulse:
IEC 60255
-
5:2000
IEEE C37.90
-
2005
0.5 J, 5 kV
IP Code:
IEC 60529:2001 + CRGD:2003
IP3X
Reporting Functions
High-Resolution Data
Rate:
8000 samples/second
4000 samples/second
2000 samples/second
1000 samples/second
Output Format:
Binary COMTRADE
Note:
Per IEEE C37.111
-
1999 and IEEE C37.111-2013,
IEEE Standard
Common Format for Transient Data Exchange (COMTRADE) for Power
Systems.
Event Reports
Length:
0.25–24 seconds (based on LER and
SRATE settings)
Volatile Memory:
3 s of back-to-back event reports sampled
at 8 kHz
Nonvolatile Memory:
At least 4 event reports of a 3 s duration
sampled at 8 kHz
Resolution:
8- or 4-samples/cycle
Event Summary
Storage:
100 summaries
Breaker History
Storage:
128 histories
Sequential Events Recorder
Storage:
1000 entries
Trigger Elements:
250 relay elements
Resolution:
0.5 ms for contact inputs
Resolution:
1/8 cycle for all elements
Processing Specifications
AC Voltage and Current Inputs
8000 samples per second, 3 dB low-pass analog filter cutoff frequency of
3000 Hz.
Digital Filtering
Full-cycle cosine and half-cycle Fourier filters after low-pass analog and
digital filtering.
Protection and Control Processing
Eight times per power system cycle
Control Points
32 remote bits
32 local control bits
32 latch bits in protection logic
32 latch bits in automation logic
Relay Element Pickup Ranges and Accuracies
Instantaneous/Definite-Time Overcurrent Elements
Phase, Residual Ground, and Negative-Sequence
Pickup Range
5 A Model:
OFF, 0.25–100.00 A secondary, 0.01 A steps
1 A Model:
OFF, 0.05–20.00 A secondary, 0.01 A steps
Accuracy (Steady State)
5 A Model:
±0.05 A plus ±3% of setting
1 A Model:
±0.01 A plus ±3% of setting
Transient Overreach:
<5% of pickup
Time Delay:
0.000–16000 cycles, 0.125 cycle steps
Timer Accuracy:
±0.125 cycle plus ±0.1% of setting
Maximum Operating Time:
1.5 cycles
Time-Overcurrent Elements
Pickup Range
5 A Model:
0.25–16.00 A secondary, 0.01 A steps
1 A Model:
0.05–3.20 A secondary, 0.01 A steps
Accuracy (Steady State)
5 A Model:
±0.05 A plus ±3% of setting
1 A Model:
±0.01 A plus ±3% of setting
Time-Dial 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)
Reset:
1 power cycle or Electromechanical Reset
Emulation time
