1.8
SEL-787 Relay Instruction Manual Date Code 20081022
Introduction and Specifications
Specifications
Specifications
Instructi on Manual
General
AC Current Input
AC Voltage Inputs
Rated Operating Voltage: 100–250 Vac
Rated Continuous
Vol t age: 3 00 Vac
10 Second Thermal:
600 Vac
Rated Frequency:
50/60 ±5 Hz
Burden:
< 0.1 VA
Power Supply
High-Voltage Supply
Rated Supply Voltage:
110–240 Vac, 50/60 Hz
110–250 Vdc
Input Voltage Range:
85–264 Vac
85–275 Vdc
Power Consumption:
<40 VA (ac)
<15 W (dc)
Interruptions:
50 ms @ 125 Vac/Vdc
100 ms @ 250 Vac/Vdc
Low-Voltage Supply
Rated Supply Voltage:
24–48 Vdc
Input Voltage Range:
19.2–52.8 Vdc
Power Consumption:
<15 W (dc)
Interruptions:
10 ms @ 24 Vdc
50 ms @ 48 Vdc
Output Contacts
General
OUT103 is a Form C Trip Output, all other outputs are Form A.
Dielectric Test Voltage: 2000 Vac
Impulse Withstand
Voltage (U
imp
): 4000 V
Mechanical Durability: 10,000 no load operations
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
ase an
eu
ra
urren
s
I
NOM
= 5 A = 1 A
Rated Range (X/R = 40): 0.1–96.0 A 0.02–19.20 A
Continuous Thermal
Rating: 15 A 3 A
1 Second Thermal: 500 A 100 A
Rated Frequency: 50/60 ±5 Hz 50/60 ±5 Hz
Burden (per phase): < 0.1 VA < 0.01 VA
NOTE: I
NOM
= 1 A or 5 A secondary depending on model.
Measurement Category: II
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
Utilization Category: AC-15 (control of electromagnetic
loads > 72 VA)
Contact Rating
Designation:
B300 (B = 5 A, 300 = rated insulation
voltage)
Voltage Protection Across
Open Contacts: 270 Vac, 40 J
Rated Operational
Current (I
e
):
3 A @ 120 Vac
1.5 A @ 240 Vac
Conventional Enclosed
Thermal Current (I
the
)
Rating: 5 A
Rated Frequency: 50/60 ±5 Hz
Electrical Durability
Make VA Rating: 3600 VA, cosφ = 0.3
Electrical Durability
Break VA Rating: 360 VA, cosφ = 0.3
Fast Hybrid (high-speed high current interrupting)
Make: 30 A
Carry: 6 A continuous carry at 70°C
4 A continuous carry at 85°C
1 s Rating: 50 A
MOV Protection
(maximum voltage): 250 Vac/330 Vdc
Pickup Time: <50 μs, resistive load
Dropout Time: 8 ms, resistive load
Update Rate: 1/8 cycle
Break Capacity (10000 operations):
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
UL/CSA Digital Output Contact Temperature Derating for Operating at
Elevated Temperatures
Digital Output
Cards Installed
Operating
Ambient
Maximum Value
of Current (I
the
) Duty Factor
1–3 less than or
equal to 60°C
5.0 A Continuous
1–3 between 60°C
and 70°C
2.5 A Continuous
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