1BPower Sub-System
Intel® Server System SR2500AL
2.8.1 Efficiency
The following table provides the required minimum efficiency level at various loading conditions.
These are provided at three different load levels; 100%, 50% and 20%. Efficiency is tested over an AC input voltage range of 115VAC to 220VAC.
Loading
Recommended Efficiency
Table 8. Efficiency
100% of maximum
~80%
50% of maximum
~83%
20% of maximum
~78%
2.8.2 AC Input Voltage Specification
The power supply must operate within all specified limits over the input voltage range shown in the following table.
PARAMETER
Line Voltage
(110)
Line Voltage
(220)
Frequency
MIN
90V rms
Table 9. AC Input Rating
RATED MAX
Start-up
Vac
140V rms
85Vac
±4Vac
180V rms
200-240 264V rms
-
Power
Off
Vac
75Vac
±5Vac
-
Max Input
AC Current
Max Rated
Input AC
Current
12 A rms
1,3
11.0A
rms
4
6.0 A rms
2,3
5.5A
rms
4
47 Hz 50/60Hz 63 Hz
Notes:
1. Maximum input current at low input voltage range shall be measured at 90Vac, at max load.
2. Maximum input current at high input voltage range shall be measured at 180VAC, at max load.
3. This is not to be used for determining agency input current markings.
4. Maximum rated input current is measured at 100VAC and 200VAC.
Harmonic distortion of up to 10% of the rated AC input voltage must not cause the power supply to go out of specified limits. The power supply shall power off at or below 75Vac ±5Vac. The power supply shall start up at or above 85VAC ±4Vac. Application of an input voltage below
85VAC shall not cause damage to the power supply or blow a fuse.
2.8.3 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 of one cycle or less the power supply must meet dynamic voltage regulation requirements over the rated load. If the AC dropout lasts longer than one cycle the power supply should recover and meet all turn-on requirements. The power supply must meet the AC dropout requirement over rated AC voltages, frequencies, and output loading conditions. Any dropout of the AC line shall not cause damage to the power supply.
20ms Min when tested under the following conditions: Max combined load = 525W,
12ms Min when tested under the following conditions: Max combined load = 750W
2.8.4 AC Line 5 VSB Holdup
The 5VSB output voltage should stay in regulation under its full load (static or dynamic) during an AC dropout of 70ms min (=5VSB holdup time) whether the power supply is in ON or OFF state (PSON asserted or de-asserted).
16
Intel order number D31980-009
Revision – 1.6
