Ac Line Fuse; Ac Inrush; Ac Line Transient Specification; Susceptibility Requirements - Intel R1000GZ Technical Product Specification

3.5.5

AC Line Fuse

The power supply shall have one line fused in the single line fuse on the line (Hot) wire of the AC input. The
line fusing shall be acceptable for all safety agency requirements. The input fuse shall be a slow blow type. AC
inrush current shall not cause the AC line fuse to blow under any conditions. All protection circuits in the power
supply shall not cause the AC fuse to blow unless a component in the power supply has failed. This includes
DC output load short conditions.
3.5.6

AC Inrush

AC line inrush current shall not exceed 55A peak, for up to one-quarter of the AC cycle, after which, the input
current should be no more than the specified maximum input current. The peak inrush current shall be less
than the ratings of its critical components (including input fuse, bulk rectifiers, and surge limiting device).
The power supply must meet the inrush requirements for any rated AC voltage, during turn on at any phase of
AC voltage, during a single cycle AC dropout condition as well as upon recovery after AC dropout of any
duration, and over the specified temperature range (T
3.5.7

AC Line Transient Specification

AC line transient conditions shall 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 shall meet the requirements under the following AC line sag and surge conditions.
Duration Sag
0 to 1/2 AC cycle 95%
> 1 AC cycle >30%
Duration
Continuous
0 to ½ AC cycle
3.5.8

Susceptibility Requirements

The power supply shall meet the following electrical immunity requirements when connected to a cage with an
external EMI filter which meets the criteria defined in the SSI document EPS Power Supply Specification. For
further information on Intel standards please request a copy of the Intel Environmental Standards Handbook
Level
A The apparatus shall continue to operate as intended. No degradation of performance.
B The apparatus shall continue to operate as intended. No degradation of performance beyond spec limits.
C Temporary loss of function is allowed provided the function is self-recoverable or can be restored by the operation of the
controls.
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Intel Server System R1000GZ/GL Product Family TPS

Table 11. AC Line Sag Transient Performance

AC Line Sag (10sec interval between each sagging)
Operating AC Voltage
Nominal AC Voltage ranges
Nominal AC Voltage ranges

Table 12. AC Line Surge Transient Performance

Surge Operating AC Voltage
10% Nominal AC Voltages
30% Mid-point of nominal AC Voltages

Table 13. Performance Criteria

Revision 1.1
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Line Frequency Performance Criteria
50/60Hz No loss of function or performance
50/60Hz Loss of function acceptable, self recoverable
AC Line Surge
Line Frequency
50/60Hz
50/60Hz
Description
Performance Criteria
No loss of function or performance
No loss of function or performance