Intel SC5650 Technical Product Specification - Page 81

Airflow Requirements, Acoustic Requirements, Temperature Requirements

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Intel® Server Chassis SC5650 TPS Power Sub-system 2.4.2 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. 2.4.3 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 Table 68. Sound Power Requirement Inlet Temperature Condition 45ºC 40°C 35°C % of Maximum Loading Condition 100% 60% 40% LwAd (BA) 6.5 4.7 4.0 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° Celcius inlet temperature is derived based on standard system ambient temperature assumptions (25° Celcius and 35° Celcius), 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, as determined according to ECMA 74, Annex D. 2.4.4 Temperature Requirements The power supply operates within all specified limits over the Top temperature range. All airflow passes through the power supply and not over the exterior surfaces of the power supply. Table 69. Thermal Requirements Item Top Tnon-op Item Altitude Description Operating temperature range. Non-operating temperature range. Description Maximum operating altitude MIN MAX Units 0 45 °C -40 70 °C MIN MAX Units 1500 m The power supply meets UL enclosure requirements for temperature rise limits. All sides of the power supply, with exception of the air exhaust side, are classified as "Handle, knobs, grips, etc., held for short periods of time only." Revision 1.2 67 Intel order number E39531-004

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Intel® Server Chassis SC5650 TPS
Power Sub-system
Revision 1.2
Intel order number E39531-004
67
2.4.2
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.
2.4.3
Acoustic Requirements
The declared sound power level of the power supply assembly does not exceed the levels
specified in the following table.
Table 68. Sound Power Requirement
Operating Conditions
Inlet Temperature
Condition
% of Maximum Loading
Condition
LwAd (BA)
Maximum
45ºC
100%
6.5
Operating
40
°
C
60%
4.7
Idle
35
°
C
40%
4.0
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°
Celcius inlet temperature is derived based on standard system ambient temperature
assumptions (25° Celcius and 35° Celcius), 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, as
determined according to ECMA 74, Annex D.
2.4.4
Temperature Requirements
The power supply operates within all specified limits over the T
op
temperature range. All airflow
passes through the power supply and not over the exterior surfaces of the power supply.
Table 69. Thermal Requirements
Item
Description
MIN
MAX
Units
T
op
Operating temperature range.
0
45
°
C
T
non-op
Non-operating temperature range.
-40
70
°
C
Item
Description
MIN
MAX
Units
Altitude
Maximum operating altitude
1500
m
The power supply meets UL enclosure requirements for temperature rise limits. All sides of the
power supply, with exception of the air exhaust side, are classified as “Handle, knobs, grips,
etc., held for short periods of time only.”