Electrostatic Discharge; Rack Specifications And Recommendations; Mechanical Recommendations For The Rack; Protective Grounding For The Rack - Extreme Networks Summit X150 Series Hardware Installation Manual

Electrostatic Discharge

Your system must be protected from static electricity or electrostatic discharge (ESD). Take the following
measures to ensure optimum system performance:
Remove materials that can cause electrostatic generation (such as synthetic resins) from the wiring
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closet. Check the appropriateness of floor mats and flooring.
Connect metal chassis, conduit, and other metals to ground using dedicated grounding lines.
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Use electrostatically safe equipment. If you are working with pluggable interface modules, wear an
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ESD-preventive wrist strap and connect the metal end to a grounded equipment rack or other source
of ground.

Rack Specifications and Recommendations

Racks should conform to conventional standards. In the United States, use EIA Standard RS-310C:
Racks, Panels, and Associated Equipment. In countries other than the United States, use IEC Standard
297. In addition, verify that your rack meets the basic mechanical, space, and earthquake requirements
that are described in this section.

Mechanical Recommendations for the Rack

Use equipment racks that meet the following mechanical recommendations:
Use an open style, 19-inch rack to facilitate easy maintenance and to provide proper ventilation.
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Use a rack made of steel or aluminum.
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The rack should use the universal mounting rail hole pattern that is identified in IEC Standard 297.
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The rack should have designated earth grounding connections (typically on the base).
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The rack must meet earthquake safety requirements equal to that of the installed chassis.
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The mounting holes should be flush with the rails to accommodate the chassis.
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The rack should support approximately 600 pounds (272 kilograms).
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Protective Grounding for the Rack

Use a rack grounding kit and a ground conductor that is carried back to earth or to another suitable
building ground.
At a minimum, follow these guidelines to ground equipment racks to the earth ground:
CAD weld appropriate wire terminals to building I-beams or earth ground rods.
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For a Summit DC-powered switch, use a minimum 14 AWG stranded copper wire for grounding.
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AC-powered Summit switches do not need separate chassis grounding.
Position the earth ground as close to the equipment rack as possible to maintain the shortest wiring
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distance possible.
Use a ground impedance tester or micro-ohm meter to test the quality of earth ground connection at
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the chassis. This will ensure good grounding between the chassis, rack, and earth ground.
NOTE
Because building codes vary worldwide, Extreme Networks strongly recommends that you consult an
electrical contractor to ensure proper equipment grounding for your specific installation.
Summit Family Switches Hardware Installation Guide
Meeting Site Requirements
161