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Intel® Server Chassis SC1400UP / Intel® Server Platform SR1425BK1-E
6.14
AC Line Inrush
AC line inrush current shall not exceed 55A peak ,cold start @25degree C and components
damaged @hot start 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
6.15
AC Line Isolation Requirements
The power supply shall meet all safety agency requirements for dielectric strength. Additionally,
power supply vendor must provide Intel with written confirmation of dielectric withstand test
which includes: voltage level, duration of test and identification detailing how each power supply
is marked to indicate dielectric withstand test had been completed successfully. Transformers'
isolation between primary and secondary windings must comply with the 3000Vac (4242Vdc)
dielectric strength criteria. If the working voltage between primary and 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.
6.16
AC Line Leakage Current
The maximum leakage current to ground for each power supply shall be 3.5mA when tested at
240VAC.
6.17 AC Line Fuse
The power supply shall have a 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.
6.18 Power Factor Correction
The power supply shall incorporate a Power Factor Correction circuit. The power supply shall be
tested as described in EN 61000-3-2: Electromagnetic Compatibility (EMC) Part 3: Limits-
Section 2: Limits for harmonic current emissions, and shall meet the harmonic current emissions
limits specified for ITE equipment. The power supply shall be tested as described in JEIDA MITI
Guideline for Suppression of High Harmonics in Appliances and General-Use Equipment and
shall meet the harmonic current emissions limits specified for ITE equipment.
6.19 Efficiency
The power supply shall have a recommended efficiency of 70% at maximum load and over the
specified AC voltage.(100VAC to 240VAC) DC Output Specification
Revision 1.0
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