1.9
Date Code 20150130 Instruction Manual SEL-787 Relay
Introduction and Specifications
Specifications
Specifications
Instruction Manual
Compliance
ISO 9001:2008 Certified
UL, cUL: Protective Relay Category NRGU,
NRGU7 per UL 508, C22.2 No. 14
CSA: C22.2 No. 61010-1
CE: CE Mark–EMC Directive
Low Voltage Directive
IEC 61010-1:2001
IEC 60947-1
IEC 60947-4-1
IEC 60947-5-1
Hazardous Locations
Approvals:
Complies with UL 1604, ISA 12.12.01,
CSA 22.2 No. 213, and EN 60079-15
(Class I, Division 2).
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: 15 A, 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 A, 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 (L-L secondary)
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
Output Contacts
General
OUT103 is a Form C trip output, all other outputs are Form A, except for
the SELECT 4 DI/3 DO card, which supports two Form C outputs and
one Form B output.
Dielectric Test Voltage: 2500 Vac
Impulse Withstand Voltage
(U
imp
): 4700 V
Mechanical Durability: 100,000 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
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
Vo l t age ( 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, cos = 0.3
Electrical Durability Break
VA Rating: 360 VA, cos = 0.3
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