Schweitzer Engineering Laboratories, Inc.
SEL-787-2, -3, -4 Data Sheet
35
Breaking Capacity (10,000 Operations) per IEC 60255-0-20:1974:
24 Vdc
0.75 A
L/R = 40 ms
48 Vdc
0.50 A
L/R = 40 ms
125 Vdc
0.30 A
L/R = 40 ms
250 Vdc
0.20 A
L/R = 40 ms
Cyclic (2.5 Cycles/Second) per IEC 60255-0-20:1974:
24 Vdc
0.75 A
L/R = 40 ms
48 Vdc
0.50 A
L/R = 40 ms
125 Vdc
0.30 A
L/R = 40 ms
250 Vdc
0.20 A
L/R = 40 ms
AC Output Ratings
Maximum Operational
Voltage (U
e
) Rating:
240 Vac
Insulation Voltage (U
i
)
Rating (excluding
EN 61010-1):
300 Vac
1-Second Thermal:
50 A
Contact Rating Designation: B300
Utilization Category:
AC-15
Voltage Protection Across
Open Contacts:
270 Vac, 115 J
Fast Hybrid (High-Speed, High-Current Interrupting)
DC Output Ratings
Rated Operational Voltage: 250 Vdc
Rated Voltage Range:
19.2–275 Vdc
Rated Insulation Voltage:
300 Vdc
Make:
30 A @ 250 Vdc per IEEE C37.90
Carry:
6 A @ 70°C
4 A @ 85°C
1-Second Thermal:
50 A
Open State Leakage
Current:
<500 µA
MOV Protection
(maximum voltage):
250 Vac/330 Vdc
Pickup Time:
<50
s, resistive load
Dropout Time:
<8 ms, resistive load
Breaking Capacity (10,000 Operations) per IEC 60255-0-20:1974:
48 Vdc
10.0 A
L/R = 40 ms
125 Vdc
10.0 A
L/R = 40 ms
250 Vdc
10.0 A
L/R = 20 ms
Cyclic Capacity (4 Cycles in 1 Second, Followed by 2 Minutes Idle
for Thermal Dissipation) per IEC 60255-0-20:1974:
48 Vdc
10.0 A
L/R = 40 ms
125 Vdc
10.0 A
L/R = 40 ms
250 Vdc
10.0 A
L/R = 20 ms
B300 (5 A Thermal Current, 300 Vac Max)
Maximum Current
Max VA
Voltage
120 Vac
240 Vac
—
Make
30 A
15 A
3600
Break
3 A
1.5 A
360
PF <0.35, 50–60 Hz
AC-15
Operational Voltage (Ue)
120 Vac
240 Vac
Operational Current (Ie)
3 A
1.5 A
Make Current
30 A
15 A
Break Current
3 A
1.5 A
Electromagnetic loads >72 VA, PF <0.3, 50–60 Hz
AC Output Ratings
See
for
.
Optoisolated Control Inputs
When Used With DC Control Signals
Pickup/Dropout Time:
Depends on the input debounce settings
250 V:
ON for 200–312.5 Vdc
OFF below 150 Vdc
220 V:
ON for 176–275 Vdc
OFF below 132 Vdc
125 V:
ON for 100–156.2 Vdc
OFF below 75 Vdc
110 V:
ON for 88–137.5 Vdc
OFF below 66 Vdc
48 V:
ON for 38.4–60 Vdc
OFF below 28.8 Vdc
24 V:
ON for 15–30 Vdc
OFF for below 5 Vdc
When Used With AC Control Signals
Pickup Time:
2 ms
Dropout Time:
16 ms
250 V:
ON for 170.6–312.5 Vac
OFF below 106 Vac
220 V:
ON for 150.2–275 Vac
OFF below 93.3 Vac
125 V:
ON for 85–156.2 Vac
OFF below 53 Vac
110 V:
ON for 75.1–137.5 Vac
OFF below 46.6 Vac
48 V:
ON for 32.8–60 Vac
OFF below 20.3 Vac
24 V:
ON for 14–30 Vac
OFF below 5 Vac
Current draw at nominal dc
voltage:
2 mA (at 220–250 V)
4 mA (at 48–125 V)
10 mA (at 24 V)
Rated Impulse Withstand
Voltage (U
imp
):
4000 V
Analog Output (Optional)
1A0
4A0
Current:
4–20 mA
±20 mA
Voltage:
—
±10 V
Load at 1 mA:
—
0–15 k
Load at 20 mA:
0–300
0–750
Load at 10 V:
—
>2000
Refresh Rate:
100 ms
100 ms
% Error, Full Scale, at
<±1%
<±0.55%
Select From:
Analog quantities available in the relay
Analog Inputs (Optional)
Maximum Input Range:
±20 mA
±10 V
Operational range set by user
Input Impedance:
200
(current mode)
>10 k
(voltage mode)
Accuracy at 25°C:
With user calibration:
0.05% of full scale (current mode)
0.025% of full scale (voltage mode)
Without user calibration: Better than 0.5% of full scale at 25°C
Accuracy Variation With
Temperature:
±0.015% per °C of full-scale
(±20 mA or ±10 V)
