SEL-451 Data Sheet
Schweitzer Engineering Laboratories, Inc.
26
Specifications
Note:
If the relay is using a remote data acquisition system, such as TiDL, the
operating times will be delayed by 1.5 ms. Use caution when setting the
relay coordination times to account for this added delay. Element operate
times will also have this small added delay.
Compliance
Designed and manufactured under an ISO 9001 certified quality
management system
47 CFR 15B Class A
This equipment has been tested and found to comply with the limits for
a Class A digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference in which case
the user will be required to correct the interference at his own
expense.
UL Listed to U.S. and Canadian safety standards
(File E212775; NRGU, NRGU7)
CE Mark
General
AC Analog Inputs
Sampling Rate:
8 kHz
AC Current Input (Secondary Circuits)
Note:
Current transformers are Measurement Category II.
Current Rating (With DC Offset at X/R = 10, 1.5 cycles)
1 A Nominal:
18.2 A
5 A Nominal:
91 A
Continuous Thermal Rating
1 A Nominal:
3 A
4 A (+55°C)
5 A Nominal:
15 A
20 A (+55°C)
Saturation Current (Linear) Rating
1 A Nominal:
20 A
5 A Nominal:
100 A
A/D Current Limit
Note:
Signal clipping may occur beyond this limit.
1 A Nominal:
49.5 A
5 A Nominal:
247.5 A
One-Second Thermal Rating
1 A Nominal:
100 A
5 A Nominal:
500 A
One-Cycle Thermal Rating
1 A Nominal:
250 A peak
5 A Nominal:
1250 A peak
Burden Rating
1 A Nominal:
0.1 VA @ 1 A
5 A Nominal:
0.5 VA @ 5 A
AC Voltage Inputs
Three-phase, four-wire (wye) connections are supported.
Rated Voltage Range:
0–300 V
L-N
Ten-Second Thermal Rating: 600 Vac
Burden:
0.1 VA @ 125 V
LEA Voltage Inputs
Rated Voltage Range:
0–8 V
L-N
Ten-Second Thermal Rating: 300 Vac
Input Impedance:
1 M
Common Mode Voltage
Operation:
50 Vac
Without Damage:
300 Vac
Frequency and Rotation
Nominal Frequency Rating:
50 ±5 Hz
60 ±5 Hz
Phase Rotation:
ABC or ACB
Frequency Tracking Range:
40–65 Hz
<40 Hz = 40 Hz
>65 Hz = 65 Hz
Default Slew Rate:
15 Hz/s
Power Supply
24–48 Vdc
Rated Voltage:
24–48 Vdc
Operational Voltage Range:
18–60 Vdc
Vdc Input Ripple:
15% per IEC 60255
-
26:2013
Interruption:
20 ms at 24 Vdc, 100 ms at 48 Vdc per
IEC 60255-26:2013
Burden:
<35 W
48–125 Vdc or 110–120 Vac
Rated Voltage:
48–125 Vdc, 110–120 Vac
Operational Voltage Range:
38–140 Vdc
85–140 Vac
Rated Frequency:
50/60 Hz
Operational Frequency
Range:
30–120 Hz
Vdc Input Ripple:
15% per IEC 60255
-
26:2013
Interruption:
14 ms at 48 Vdc, 160 ms at 125 Vdc per
IEC 60255-26:2013
Burden:
<35 W, <90 VA
125–250 Vdc or 110–240 Vac
Rated Voltage:
125–250 Vdc, 110–240 Vac
Operational Voltage Range:
85–300 Vdc
85–264 Vac
Rated Frequency:
50/60 Hz
Operational Frequency
Range:
30–120 Hz
Vdc Input Ripple:
15% per IEC 60255
-
26:2013
Interruption:
46 ms at 125 Vdc, 250 ms at 250 Vdc per
IEC 60255
-
26:2013
Burden:
<35 W, <90 VA
Control Outputs
Standard
Make:
30 A
Carry:
6 A continuous carry at 70°C
4 A continuous carry at 85°C
1s Rating:
50 A
MOV Protection (Maximum
Voltage):
250 Vac/ 330 Vdc
Pickup/Dropout Time:
6 ms, resistive load
Update Rate:
1/8 cycle
