Technical data

8 Model 3040 40U Cabinet Altitude Ranges
Table 5 Temperature Requirements and Humidity Requirements for the Model 3040 40U Cabinet
The maximum allowed dew point is 28°C (82°F), with a maximum humidity gradient
of 10 percent per hour.
Model 3040 40U
Cabinet Altitude
Ranges
Table 6 Altitude Ranges for the Model 3040 40U Cabinet
Model 3040 40U
Cabinet Airflow,
Heat
Dissipation, and
Service
Clearances
Air flows through the cabinet from the front to the rear. Allow at least 76 cm (30 in.)
of clearance in front of the cabinet, and at least 61 cm (24 in.) of clearance behind the
cabinet for service clearance, ventilation, and heat dissipation. The total depth
required for the cabinet plus clearance is 240 cm (94 in.). The cabinet does not require
side clearances.
Environment Temperature Range Temperature Change Relative Humidity
Operating* 10°C to 35° C
(50°F to 95°F)
10°C per hour
(18°F per hour)
20% to 80%
Storage –10°C to 45°C
(14°F to 113°F)
15°C per hour
(27°F per hour)
10% to 90%
Transit –40°C to 65°C
(–40°F to 149°F)
20°C per hour
(36°F per hour)
5% to 95%
*If you plan to operate a storage array at an altitude between 1000 m to 3000 m (3280 ft to 9842 ft) above sea level,
lower the environmental temperature 1.7°C (3.3°F) for every 1000 m (3280 ft) above sea level.
Environment Altitude
Operating 30.5 m (100 ft) below sea level to 3000 m (9842 ft) above sea
level
Storage 30.5 m (100 ft) below sea level to 3000 m (9842 ft) above sea
level
Transit 30.5 m (100 ft) below sea level to 12,000 m (40,000 ft) above
sea level