Sel 751A - Wire Sizes and Insulation; Instructions for Cleaning and Decontamination

ix
Date Code 20100129 Instruction Manual SEL-751A Relay
Preface
Safety and General 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 may use
the following table as a guide in selecting wire sizes.
You should use wire with 0.4-mm thick insulation for high voltage
connections to allow for contact between adjacent wires. If possible, use
0.4-mm insulated wires for all connections.
Instructions for
Cleaning and
Decontamination
Use a mild soap or detergent solution and a damp cloth to carefully clean the
SEL-751A chassis when necessary. Avoid using abrasive materials, polishing
compounds, and harsh chemical solvents (such as xylene or acetone) on any
surface of the relay.
Technical Assistance
Obtain technical assistance from the following address:
Schweitzer Engineering Laboratories, Inc.
2350 NE Hopkins Court
Pullman, WA 99163-5603 USA
Phone: +1.509.332.1890
Fax: +1.509.332.7990
Internet: www.selinc.com or www.selinc.com/industrial
E-mail: info@selinc.com
Connection Type Minimum Wire Size Maximum Wire Size
Grounding (Earthing) Connection 18 AWG (0.8 mm
2
) 14 AWG (2.5 mm
2
)
Current Connection 16 AWG (1.5 mm
2
)12 AWG (4 mm
2
)
Potential (Voltage) Connection 18 AWG (0.8 mm
2
) 14 AWG (2.5 mm
2
)
Contact I/O 18 AWG (0.8 mm
2
) 14 AWG (2.5 mm
2
)
Other Connection 18 AWG (0.8 mm
2
) 14 AWG (2.5 mm
2
)
Use of this equipment in a manner
other than specified in this manual
can impair operator safety
safeguards provided by this
equipment.
!
WARNING