Ac Line Fuse; Ac Inrush; Ac Line Transient Specification; Table 15. Ac Line Dropout/Holdup - Intel JBOD 2000 Hardware Manual

Intel® Storage Server System JBOD 2000 Family Hardware Guide
4.6.4.1 AC Line 12VSB Holdup
The 12VSB output voltage stays in regulation under its full load (static or dynamic) during an AC
dropout of 70ms min (=12VSB holdup time) whether the power supply is in ON or OFF state
(PSON asserted or de-asserted).
4.6.5

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. The AC inrush current does not cause the AC line fuse to blow under any conditions.
All protection circuits in the power supply will not cause the AC fuse to blow unless a component
in the power supply has failed. This includes DC output load short conditions.
4.6.6

AC Inrush

The AC line inrush current does not exceed 55A peak, for up to one-quarter of the AC cycle,
after which, the input current is no more than the specified maximum input current. The peak
inrush current is less than the ratings of its critical components (including input fuse, bulk
rectifiers, and surge limiting device).
The power supply meets 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
4.6.7

AC Line Transient Specification

The AC line transient conditions are defined as sag and surge conditions. Sag conditions are
also commonly referred to as "brownout"; these conditions are defined as the conditions when
the AC line voltage drops below nominal voltage. Surge conditions are defined as the 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.
Duration Sag
0 to 1/2 AC cycle 95%
> 1 AC cycle > 30%
Revision 1.42

Table 15. AC Line Dropout/Holdup

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Table 16. AC Line Sag Transient Performance

AC Line Sag (10sec interval between each sagging)
Operating AC Voltage
Nominal AC Voltage ranges
Nominal AC Voltage ranges
Holdup Time
12msec
Line Frequency
50/60 Hz No loss of function or
performance
50/60 Hz Loss of function acceptable,
self recoverable
Power Subsystem
).
op
Performance Criteria
27