Temperature
Specifications
Maximum temperature gradient (operating and storage)
20°C/h (68°F/h)
Table 23. Relative humidity specifications
Relative humidity
Specifications
Storage
5% to 95% RH with 33°C (91°F) maximum dew point. Atmosphere must be
non-condensing at all times.
Operating
10% to 80% relative humidity with 29°C (84.2°F) maximum dew point.
Table 24. Maximum vibration specifications
Maximum vibration
Specifications
Operating
0.26 G
rms
at 5 Hz to 350 Hz (all three axes).
Storage
1.88 G
rms
at 10 Hz to 500 Hz for 15 min (all six sides tested).
Table 25. Maximum shock specifications
Maximum shock
Specifications
Operating
Six consecutively executed shock pulses in the positive and negative x, y,
and z axes of 6 G for up to 11 ms.
Storage
Six consecutively executed shock pulses in the positive and negative x, y,
and z axes (one pulse on each side of the system) of 71 G for up to 2 ms.
Table 26. Maximum altitude specifications
Maximum altitude
Specifications
Operating
3048 m (10,000 ft)
Storage
12,000 m (39,370 ft)
Table 27. Operating temperature de-rating specifications
Operating temperature de-rating
Specifications
Up to 35°C (95°F)
Maximum temperature is reduced by 1°C/300 m (1°F/547 ft) above 950 m
(3,117 ft).
35°C to 40°C (95°F to 104°F)
Maximum temperature is reduced by 1°C/175 m (1°F/319 ft) above 950 m
(3,117 ft).
40°C to 45°C (104°F to 113°F)
Maximum temperature is reduced by 1°C/125 m (1°F/228 ft) above 950 m
(3,117 ft).
Dell EMC PowerEdge R740 Installation and Service Manual
Technical specifications
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