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Power Sub-system
2.5.2
Acoustic Requirements
The declared sound power level of the power supply assembly does not exceed the levels
specified in the following table.
Operating Conditions
Maximum
Operating
Idle
The declared sound power level is measured according to ECMA 74 and reported according to
ECMA 109. The fan RPM settings for the two operating conditions are determined through
thermal analysis and/or testing prior to the sound power level measurement. To measure the
power supply assembly sound power levels corresponding to the two operating conditions, the
fan in the power supply assembly is powered externally to the two RPM settings. The 45 degree
C inlet temperature is derived based on standard system ambient temperature assumptions (25
degrees C and 35 degrees C), typical temperature rise within the system, and thermal impact of
fan speed control.
Pure Tones: The power supply assembly does not produce any prominent discrete tones
determined according to ECMA 74, Annex D.
2.5.3
Airflow Requirements
The power supply incorporates one 80-mm fan for self-cooling and system cooling. The fan
provides no less than 14 CFM airflow through the power supply when installed in the system.
The cooling air enters the power module from the non-AC side.
2.5.4
Temperature Requirements
The power supply operates within all specified limits over the T
passes through the power supply and not over the exterior surfaces of the power supply.
Item
T
op
T
non-op
Altitude
82
Table 97. Sound Power Requirement
Inlet Temperature
Condition
45ºC
40 C
35 C
Table 98. Thermal Requirements
Description
Operating temperature range.
Non-operating temperature range.
Maximum operating altitude
Intel order number D37594-005
®
Intel
Entry Server Chassis SC5299-E TPS
% of Maximum Loading
Condition
100%
60%
40%
temperature range. All airflow
op
MIN
MAX
0
45
-40
70
1500
LwAd (BA)
6.5
4.7
4.0
Units
C
C
m
Revision 3.1
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