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Preparing the Site
This chapter includes the following sections:
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Humidity Requirements
High humidity can cause moisture to seep into the switch. Moisture can cause corrosion of internal components
and degradation of properties such as electrical resistance, thermal conductivity, physical strength, and size.
The switch is rated to operate at 8 to 80 percent relative humidity, with a humidity gradation of 10 percent
per hour.
The switch can withstand from 5 to 90 percent relative humidity. Buildings in which the climate is controlled
by air-conditioning in the warmer months and by heat during the colder months usually maintain an acceptable
level of humidity for the switch equipment. However, if the switch is located in an unusually humid location,
you should use a dehumidifier to maintain the humidity within an acceptable range.
Altitude Requirements
If you operate a switch at a high altitude (low pressure), the efficiency of forced and convection cooling is
reduced and can result in electrical problems that are related to arcing and corona effects. This condition can
also cause sealed components with internal pressure, such as electrolytic capacitors, to fail or to perform at a
OL-30453-01
Humidity Requirements, page 9
Altitude Requirements, page 9
Dust and Particulate Requirements, page 10
Minimizing Electromagnetic and Radio Frequency Interference, page 10
Shock and Vibration Requirements, page 11
Grounding Requirements, page 11
Planning for Power Requirements, page 11
Rack and Cabinet Requirements, page 14
Clearance Requirements, page 17
C H A P T E R
Cisco Nexus 7718 Switch Site Preparation and Hardware Installation Guide
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