Preparing for Installation
High Voltage Single Phase Comments
Usable PDU power cord length 2 m (6.6 feet) PDU power cords are 4 m long (13 feet), but
sections are used for internal routing in the
rack.
Related Information
■
“Facility Power Requirements” on page 100
■
“Grounding Requirements” on page 100
■
“System Power Consumption” on page 290
Preparing for Cooling
■
“Environmental Requirements” on page 293
■
“Heat Dissipation and Airflow Requirements” on page 294
■
“Perforated Floor Tiles” on page 296
Environmental Requirements
The following table lists temperature, humidity and altitude requirements.
TABLE 65
Temperature, Humidity, and Altitude
Condition Operating Requirement Non-operating Requirement Comments
Temperature 5 to 32°C (41 to 89.6°F) -40 to 70°C (-40 to 158°F). For optimal rack cooling, data
center temperatures from 21 to
23°C (70 to 47°F)
Relative humidity 10 to 90% relative humidity,
noncondensing
Up to 93% relative humidity. For optimal data center
rack cooling, 45 to 50%,
noncondensing
Altitude 3048 m (10000 ft.) maximum 12000 m (40000 ft.). Ambient temperature is reduced
by 1 degree Celsius per 300 m
above 900 m altitude above sea
level
Related Information
■
“Heat Dissipation and Airflow Requirements” on page 294
■
“Perforated Floor Tiles” on page 296
Connecting Expansion Racks 293