Technical Product Specification

IntelP
®
P Server System R1000JP Family TPS Power Sub-System
3.2.6.19 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.
3.2.6.20 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 shall 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 shall meet the AC
dropout requirement over rated AC voltages and frequencies. A dropout of the AC line for any
duration shall not cause damage to the power supply.
Loading
Holdup time
75%
12msec
100%
10msec
3.2.6.21 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
should 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.
3.2.6.22 AC Inrush
Peak inrush current shall not damage the PSU or the input fuse shall 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
shall be 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.
3.2.6.23 AC Line Leakage Current
The maximum leakage current to ground for each power supply shall be 3.5mA when tested at
240VAC.
3.2.6.24 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
Revision 1.7 31
Intel order number: G71652-008