Intel® Storage Server System JBOD 2000 Family Hardware Guide
Power Subsystem
Revision 1.42
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The pass criteria include: no unsafe operation is allowed under any condition; all power supply
output voltage levels to stay within proper spec levels; no change in operating state or loss of
data during and after the test profile; no component damage under any condition.
The power supply complies with the limits defined in EN 55024: 1998/A1: 2001/A2: 2003 using
the IEC 61000-4-5: Edition 1.1:2001-04 test standard and performance criteria B defined in
Annex B of CISPR 24.
4.6.13
Voltage Interruptions
The power supply complies with the limits defined in EN 55024: 1998/A1: 2001/A2: 2003 using
the IEC 61000-4-11: Second Edition: 2004-03 test standard and performance criteria C defined
in Annex B of CISPR 24.
4.6.14
Protection Circuits
The protection circuits inside the power supply cause only the power supply’s main outputs to
shut down. If the power supply latches off due to a protection circuit tripping, an AC cycle OFF
for 15 seconds and a PSON# cycle HIGH for one second reset the power supply.
4.6.15
Over Current Protection (OCP)
The power supply has a current limit to prevent the outputs from exceeding the values shown in
the table below. If the current limit is exceeded, the power supply will shut down and latch off.
The latch will be cleared by toggling the PSON# signal or by an AC power interruption. The
power supply will not be damaged from repeated power cycling in this condition. 12VSB will be
auto-recovered after removing the OCP limit.
Table 19. 460 Watt Power Supply Over Current Protection
Output Voltage
Input Voltage Range
Over Current Limit
+12V
90–264VAC
47A min; 55A max
12VSB
90–264VAC
2A min; 2.5A max
4.6.16
Over Voltage Protection (OVP)
The power supply over voltage protection is locally sensed. The power supply will shut down
and latch off after an over voltage condition occurs. This latch will be cleared by toggling the
PSON# signal or by an AC power interruption. The values are measured at the output of the
power supply’s connectors. The voltage never exceeds the maximum levels when measured at
the power connectors of the power supply connector during any single point of fail. The voltage
never trips any lower than the minimum levels when measured at the power connector. 12VSB
will be auto-recovered after removing the OVP limit.
