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Date Code 20170927 Instruction Manual SEL-751 Relay
Preface
Safety Information
Wire Sizes and
Insulation
Wire sizes for grounding (earthing), current, voltage, and contact connections
are dictated by the terminal blocks and expected load currents. You can use the
following table as a guide in selecting wire sizes.
Instructions for
Cleaning and
Decontamination
Use a mild soap or detergent solution and a damp cloth to carefully clean the
SEL-751 chassis when necessary. Clean the touchscreen display gently with a
moist cotton cloth. Avoid using abrasive materials, polishing compounds, and
harsh chemical solvents (such as xylene or acetone) on any surface of the
relay.
Copyrighted Software
The product includes copyrighted software licensed under the TI BSD End
User Agreement, reproduced as follows:
Software License Agreement
Copyright © 2010 Texas Instruments Incorporated - http://www.ti.com/
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the original copyright notice,
this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the original copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
Neither the name of Texas Instruments Incorporated nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
Overvoltage Category II
Pollution Degree 2
Atmospheric pressure 80 to 110 kPa
a
Consult the factory for derating specifications for higher altitude applications.
Condition Range/Description
Connection Type
Wire Size
Insulation
Voltage
Minimum Maximum
Grounding (Earthing)
Connection
18 AWG (0.80 mm
2
)14 AWG (2.10 mm
2
) 300 V min
Current Connection 16 AWG (1.30 mm
2
)12 AWG (3.30 mm
2
) 300 V min
Potential (Voltage)
Connection
18 AWG (0.80 mm
2
)14 AWG (2.10 mm
2
) 300 V min
Contact I/O
Connection
18 AWG (0.80 mm
2
)14 AWG (2.10 mm
2
) 300 V min
RTD Connection
a
a
See Table 2.18: Typical Maximum RTD Lead Length.
28 AWG (0.08 mm
2)
12 AWG (3.30 mm
2
) 300 V min
Other Connection 18 AWG (0.80 mm
2
)14 AWG (2.10 mm
2
) 300 V min
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