Schweitzer Engineering Laboratories SEL-787-2 - Page 35

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
Vo l t a g e ( 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 AC Output Ratings for Standard Contacts.
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)