Schweitzer Engineering Laboratories SEL-751 - Page 52

1.16
SEL-751 Relay Instruction Manual Date Code 20170927
Introduction and Specifications
Specifications
Fiber Sensor
Minimum Receive
Sensitivity: –29.23 dB
Link Budget: 17.23 dB
Clear-Jacketed Fiber Worst
Case Loss: –0.19 dBm
Clear-Jacketed Fiber Typical
Loss: –0.17 dBm
ST or V-Pin Connector Splice
Loss: –2.00 dB
Approximate Range: As much as 70 m
Optional Communications Cards
Option 1: EIA-232 or EIA-485 communications
card
Option 2: DeviceNet communications card
Communications Protocols
SEL, Modbus, DNP3, FTP, TCP/IP, Telnet, SNTP, IEC 61850
Edition 2, IEC 60870-5-103, PRP, M
IRRORED BITS, EVMSG,
C37.118 (synchrophasors), and DeviceNet.
Operating Temperature
IEC Performance Rating: –40 to +85C (–40 to +185F)
(per IEC/EN 60068-2-1 and
IEC/EN 60068-2-2)
Note: Not applicable to UL applications.
Note: Two-line display contrast is impaired for temperatures below
–20°C and above +70°C.
Note: Touchscreen display is impaired for temperatures below –20°C
and above +70°C.
DeviceNet Communications
Card Rating: +60°C (+140°F) maximum
Optoisolated Control Inputs: As many as 26 inputs are allowed in
ambient temperatures of 85°C or less.
As many as 34 inputs are allowed in
ambient temperatures of 75°C or less.
As many as 44 inputs are allowed in
ambient temperatures of 65°C or less.
Operating Environment
Pollution Degree: 2
Overvoltage Category: II
Atmospheric Pressure: 80–110 kPa
Relative Humidity: 5–95%, noncondensing
Maximum Altitude Without
Derating (consult the factory
for higher altitude derating): 2000 m
Dimensions
144.0 mm (5.67 in.) x 192.0 mm (7.56 in.) x 147.4 mm (5.80 in.)
Weight
2.7 kg (6.0 lb)
Relay Mounting Screw (#8-32) Tightening Torque
Minimum: 1.4 Nm (12 in-lb)
Maximum: 1.7 Nm (15 in-lb)
Terminal Connections
Termina l Bloc k
Screw Size: #6
Ring Terminal Width: 0.310-inch maximum
Terminal Block Tightening Torque
Minimum: 0.9 Nm (8 in-lb)
Maximum: 1.4 Nm (12 in-lb)
Compression Plug Tightening Torque
Minimum: 0.5 Nm (4.4 in-lb)
Maximum: 1.0 Nm (8.8 in-lb)
Compression Plug Mounting Ear Screw Tightening Torque
Minimum: 0.225 Nm (1.6 in-lb)
Maximum: 0.25 Nm (2.2 in-lb)
Type Tests
Electromagnetic Compatibility Emissions
Conducted Emissions: EN 61000-6-4:2007 Class A
FCC 47 CFR 15.109:2014 Class A
FCC 47 CFR 15.109(g):2014 Class A
IEC 60255-26:2013 Class A
Radiated Emissions: EN 61000-6-4:2007 Class A
FCC 47 CFR 15.107:2014 Class A
IEC 60255-26:2013 Class A
Electromagnetic Compatibility Immunity
Conducted RF Immunity: IEC 60255-26:2013; Section 7.2.8
Severity Level: 10 Vrms
IEC 61000-4-6:2008
Severity Level: 10 Vrms
Electrostatic Discharge
Immunity:
IEC 61000-4-2:2008
IEC 60255-26:2013; Section 7.2.3
IEEE C37.90.3:2001
Severity Level 4
8 kV contact discharge
15 kV air discharge
Fast Transient, Burst
Immunity:
IEC 61000-4-4:2011
IEC 60255-26:2013; Section 7.2.5
4 kV @ 5.0 kHz
2 kV @ 5.0 kHz for comm. ports
Magnetic Field Immunity: IEC 61000-4-8:2009
Severity Level: 1000 A/m for 3
seconds
100 A/m for 1 minute
IEC 61000-4-9: 2001
Severity Level: 1000 A/m
IEC 61000-4-10:2001
Severity Level: 100 A/m
Power Supply Immunity: IEC 60255-26:2013; Section 7.2.11
IEC 60255-26:2013; Section 7.2.12
IEC 60255-26:2013; Section 7.2.13
IEC 61000-4-11:2004
IEC 61000-4-17:1999
IEC 61000-4-29:2000
Radiated RF Immunity: IEC 61000-4-3:2010
IEC 60255-26:2013; Section 7.2.4
10 V/m
IEEE C37.90.2-2004
35 V/m