Technical Product Specification
Power Sub-system Intel® Server Chassis SC5650 TPS
Revision 1.2
Intel order number E39531-004
94
regulation requirements. An AC line dropout of any duration does not cause tripping of control
signals or protection circuits. If the AC dropout lasts longer than the hold up time the power
supply recovers and meets all turn on requirements. The power supply meets the AC dropout
requirement over rated AC voltages and frequencies. A dropout of the AC line for any duration
does not cause damage to the power supply.
2.5.4.4 AC Line Fuse
The power supply has a one line fuse 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 failed. This includes DC output load short conditions.
2.5.4.5 AC In-rush
Peak inrush current does not damage the PSU or the input fuse does 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
are provided by the vendor to assist with the UPS and line conditioning, sizing and selection.
No component will be stressed over its Max Specification (I 2·t). This must be demonstrated
through measurements of the critical component specifications.
2.5.4.6 AC Line Transient Specification
AC line transient conditions are defined as “sag” and “surge” conditions. “Sag” conditions are
also commonly referred to as “brownout,” and defined as AC line voltage drops below nominal
voltage conditions. “Surge” is defined as AC line voltage rises above nominal voltage
conditions.
The power supply meets requirements under the following AC line sag and surge conditions.
Table 109. AC Line Sag Transient Performance
Duration Sag Operating AC Voltage Line Frequency Performance Criteria
0 to 1 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 110. AC Line Surge Transient Performance
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