Intel
®
Entry Server Chassis SC5299-E TPS Power Sub-system
Revision 3.1
Intel order number D37594-005
27
Table 22. Environmental Requirements
Item Description MIN Specification Units
T
op
Operating temperature range. 0 45
C
T
non-op
Non-operating temperature range. -40 70
C
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, must be classified as “Handle, knobs,
grips, etc. held for short periods of time only”.
2.2.2 AC Input Voltage Requirements
The power supply operates within all specified limits over the input voltage range shown in the
following table. Harmonic distortion of up to 10% THD must not cause the power supply to go
out of specified limits. The power supply will power off if the AC input is less than 75VAC +/-
5VAC range. The power supply starts up if the AC input is greater than 85VAC +/-4VAC.
Application of an input voltage below 85VAC will not cause damage to the power supply,
including a fuse blow.
Table 23. AC Input Rating
Parameter MIN Rated MAX Start up VAC Power Off VAC
Voltage (110) 90 V
rms
100-127 V
rms
140 V
rms
85Vac +/-
4Vac
75Vac +/-
5Vac
Voltage (220) 180 V
rms
200-240 V
rms
264 V
rms
Frequency 47 Hz 63 Hz
2.2.2.1 AC Inlet Connector
The AC input connector is an IEC 320 C-14 power inlet. This inlet is rated for 15A/250VAC.
2.2.2.2 AC Line Transient Specification
AC line transient conditions are defined as “sag” and “surge” conditions. “Sag” conditions are
also commonly referred to as “brownout”; these conditions will be defined as the AC line voltage
dropping below nominal voltage conditions. “Surge” will be defined to refer to conditions when
the AC line voltage rises above nominal voltage.
The power supply meets the requirements under the following AC line sag and surge conditions.
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