SEL-787-3, -4 Data Sheet Schweitzer Engineering Laboratories, Inc.
24
Specifications
Compliance
Designed and manufactured under an ISO 9001 certified quality
management system
49 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 commerical
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 to radio
comunications. Operation of this equipment in a residential area is
likely to 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
RCM Mark
General
AC Current Input
Phase and Neutral Currents
I
NOM
= 1 A or 5 A secondary depending on model
I
NOM
= 5 A
Continuous Rating: 3 • I
NOM
@ 85°C, linear to 96 A
symmetrical
4•I
NOM
@ 55°C, linear to 96 A
symmetrical
1 Second Thermal: 500 A
Burden (per phase): <0.1 VA @ 5 A
I
NOM
= 1 A
Continuous Rating: 3 • I
NOM
@ 85°C, linear to 19.2 A
symmetrical
4•I
NOM
@ 55°C, linear to 19.2 A
symmetrical
1 Second Thermal: 100 A
Burden (per phase): <0.01 VA @ 1 A
Measurement Category: II
AC Voltage Inputs
VNOM (kV L-L)/PT Ratio
Range:
100–250 V (if DELTA_Y := DELTA)
100–440 V (if DELTA_Y := WYE)
Rated Continuous Voltage: 300 Vac
10 Second Thermal: 600 Vac
Burden: <0.1 VA
Input Impedance: 4 M differential (phase-to-phase)
7 M common mode (phase-to-chassis)
Power Supply
125/250 Vdc or 120/240 Vac
Rated Supply Voltage: 110–240 Vac, 50/60 Hz
110–250 Vdc
Input Voltage Range: 85–264 Vac
85–300 Vdc
Power Consumption: <40 VA (ac)
<20 W (dc)
Interruptions: 50 ms @ 125 Vac/Vdc
100 ms @ 250 Vac/Vdc
24/48 Vdc
Rated Supply Voltage: 24–48 Vdc
Input Voltage Range: 19.2–60.0 Vdc
Power Consumption: <20 W (dc)
Interruptions: 10 ms @ 24 Vdc
50 ms @ 48 Vdc
Relay Start-Up Time: Approximately 5–10 seconds (after power
is applied until the ENABLED LED comes
on)
Fuse Ratings
LV Power Supply Fuse
Rating: 3.15 A
Maximum Rated Voltage: 300 Vdc, 250 Vac
Breaking Capacity: 1500 A at 250 Vac
Type: Time-lag T
HV Power Supply Fuse
Rating: 3.15 A
Maximum Rated Voltage: 300 Vdc, 250 Vac
Breaking Capacity: 1500 A at 250 Vac
Type: Time-lag T
Heater Fuses F2, F3: 5 A, 125 V slow blow
125 Vdc/50 A break rating
Fuses are not serviceable.
Output Contacts
The relay supports Form A, B, and C outputs.
Dielectric Test Voltages: 2500 Vac
Impulse Withstand Voltage
(U
IMP
): V
Mechanical Durability: 100,000 no-load operations
Standard Contacts
Pickup/Dropout Time:
8 ms (coil energization to contact
closure)
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
Continuous Carry: 6 A @ 70°C
4 A @ 85°C
Thermal: 50 A for 1 s
Contact Protection: 360 Vdc, 40 J MOV protection across open
contacts
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
Contact Rating Designation: B300
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