HP ProLiant BL p-Class System Setup and Installation Guide

Specifications
HP ProLiant BL p-Class System Setup and Installation Guide E-11
HP CONFIDENTIAL
Writer: Christine Portillo File Name: j-appe Specifications.doc
Codename: ICE Part Number: 230852-002 Last Saved On: 11/20/02 5:01 PM
Facility DC
Table E-6: Operating and Performance Specifications for Facility DC
Voltage
Nominal input voltage -48 VDC
Operating voltage range -48 VDC ±10% or -43.2 VDC to -52.8 VDC
Max Input voltage slew rate 0.5 V/uS
Redundant feed voltages* Bus A and bus B voltages must differ by no
more than 5 VDC during steady-state operation
Ripple/Noise 480 mV PARD**
Overshoot Must remain within regulation limits on all feeds
during startup or shutdown
Voltage transients Must not exceed -60 VDC
* All systems support redundant power configurations by using separate power inputs for
each bus. Scalable bus bars provide dual power inputs (P1 and P2) for each bus.
** Periodic and random noise (PARD). Maximum allowable peak-to-peak ripple and
noise (as measured at the load on any output channel). The ripple and noise is
measured over a 20 Hz to 100 MHz frequency band. A resistive load (non-electronic) is
used for this measurement. Each output is by-passed to return by a 10 uF tantalum
capacitor with an ESR less than 100 milli-Ohms in parallel with a 0.47 uF ceramic
capacitor, at the point of load. The load cable is 12 feet of twisted wire capable of
carrying the current. The printed wiring board assembly is installed in its enclosure for
this measurement, or the measurement leads are properly shielded with Earth grounds
applied to the insert.
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