Technical Product Specification

450W Power Subsystem Intel
®
Server System R1000SP Product Family TPS
24 Intel Order Number G64249-002 Revision 2.0
secondary dictates a higher dielectric strength test voltage the highest test voltage should be
used. In addition, the insulation system must comply with reinforced insulation per safety
standard IEC 950. Separation between the primary and secondary circuits, and primary to
ground circuits, must comply with the IEC 950 spacing requirements.
4.5.4
AC Line Dropout / Holdup
An AC line dropout is defined to be when the AC input drops to 0VAC at any phase of the AC
line for any length of time. During an AC dropout the power supply must meet dynamic voltage
regulation requirements. An AC line dropout of any duration must not cause tripping of control
signals or protection circuits. If the AC dropout lasts longer than the holdup time, the power
supply should recover and meet all turn on requirements. The power supply must meet the AC
dropout requirement over rated AC voltages and frequencies. A dropout of the AC line for any
duration must not cause damage to the power supply.
Loading
Holdup time
70%
12msec
100%
10msec
4.5.5
AC Line Fuse
The power supply must have one line fused in the single line fuse on the line (Hot) wire of the
AC input. The line fusing must be acceptable for all safety agency requirements. The input fuse
must be a slow blow type. AC inrush current must not cause the AC line fuse to blow under any
conditions. All protection circuits in the power supply must not cause the AC fuse to blow unless
a component in the power supply has failed. This includes DC output load short conditions.
4.5.6
AC Inrush
Peak inrush current must not damage the PSU or the input fuse must not blow under any
conditions of load, temperature and input voltage including repeated, rapid cycling of the power
line. Half cycle peak inrush current, peak repetitive input current and worse case power factor
must be provided by the vendor to assist with the UPS and line conditioning, sizing and
selection. No component will be stressed over its maximum specification (I
2
t). This must be
demonstrated through measurements of the critical component specifications.
4.5.7
AC Line Transient Specification
AC line transient conditions must be 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 must meet the requirements under the following AC line sag and
surge conditions.
Table 25. AC Line Sag Transient Performance
AC Line Sag (10sec interval between each sagging)
Duration
Sag
Operating AC Voltage
Line
Frequency
Performance Criteria
0 to 1/2 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