Technical Product Specification

Intel
®
Server Chassis P4000S Family TPS Chassis Power Sub-system
Revision 1.5 Intel order number G22850-006
21
2.1.4.5 AC Line Fuse
The power supply has one line fused in the single line fuse on the line (Hot) wire of the AC
input. The line fusing is acceptable for all safety agency requirements. The input fuse is a slow
blow type. AC inrush current does not cause the AC line fuse to blow under any conditions. All
protection circuits in the power supply do not cause the AC fuse to blow unless a component in
the power supply has failed. This includes DC output load short conditions.
2.1.4.6 AC Line Leakage Current
The maximum leakage current to ground for each power supply is 3.5mA when tested at
240VAC.
2.1.4.7 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 is defined as the AC line voltage
dropping below nominal voltage conditions. “Surge” is 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.
Table 11. AC Line Sag Transient Performance
AC Line Sag (10sec interval between each sagging)
Duration
Sag
Operating AC Voltage
Line Frequency
Performance Criteria
0 to 1/½ AC
cycle
95%
Nominal AC Voltage ranges
50/60Hz
No loss of function or performance
> 1 AC cycle
>30
%
Nominal AC Voltage ranges
50/60Hz
Loss of function acceptable, self
recoverable
Table 12. AC Line Surge Transient Performance
AC Line Surge
Duration
Surge
Operating AC Voltage
Line Frequency
Performance Criteria
Continuous
10%
Nominal AC Voltages
50/60Hz
No loss of function or performance
0 to ½ AC
cycle
30%
Mid-point of nominal AC
Voltages
50/60Hz
No loss of function or performance
2.1.4.8 Power Recovery
The power supply recovers automatically after an AC power failure. AC power failure is defined
to be any loss of AC power that exceeds the dropout criteria.
2.1.5 Efficiency
The following table provides the required minimum efficiency level at various loading conditions.
These are provided at three different load levels; 100%, 50% and 20%. Output shall be loaded
according to the proportional loading method defined by 80 Plus in Generalized Internal Power
Supply Efficiency Testing Protocol Rev 6.4.3. This is posted at
http://efficientpowersupplies.epri.com/methods.asp.