Extreme Networks 17001 Mechanical Recommendations for the Rack, Protective Grounding for the Rack

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.

●Use a rack made of steel or aluminum.

●The rack should use the universal mounting rail hole pattern that is identified in IEC Standard 297.

●The rack should have designated earth grounding connections (typically on the base).

●The rack must meet earthquake safety requirements equal to that of the installed chassis.

●The mounting holes should be flush with the rails to accommodate the chassis.

●The rack should support approximately 600 pounds (272 kilograms).

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.

●For a Summit DC-powered switch, use a minimum 14 AWG stranded copper wire for grounding. 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 distance possible.

●Use a ground impedance tester or micro-ohm meter to test the quality of earth ground connection at 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.

Space Requirements for the Rack

Provide enough space in front of and behind the switch so that you can service it easily. Allow a minimum of 48 inches (122 cm) in front of the rack and 30 inches (76 cm) behind the rack. When using a relay (two-post) rack, provide a minimum of 24 inches (61 cm) of space behind the mounted equipment. Extra room on each side is optional.

WARNING!

Extreme Networks switches do not have a switch for turning power to the unit on and off. For systems using an AC power supply, power to the switch is disconnected by removing the wall plug from the electrical outlet.

For DC-powered Summit switches (X450a-24tDC, X450a-24xDC, and X450a-48tDC) and the EPS-150DC power supply, turn off power to the chassis by de-energizing the circuit that feeds the power supply; this is usually accomplished by turning off a circuit breaker. Disconnecting the DC wiring harness from the DC power source requires the performance of a qualified, licensed electrician.

Summit Family Switches Hardware Installation Guide 87