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Current
CurrentCurrent
Current
Max steady state input
current
62.5A per server blade enclosure installed at -
48VDC
Max steady state current
per feed/total
Power bus boxes
70 A/70A
Mini bus bars
210 A/210A
Scalable bus bars
210 A/350A or equivalent of 175A per feed*
In-rush current
In-rush currentIn-rush current
In-rush current
Must support up to 2X the maximum operating current per server blade
enclosure (125 A) for up to 1.0 mS
Input over-current
Input over-currentInput over-current
Input over-current
Customer provided fusing for facility DC feeds that protects the system from
catastrophic over-current within 20 uS. Fuse should sustain all in-rush and
operating currents.
Max Input Current Slew
Max Input Current SlewMax Input Current Slew
Max Input Current Slew
Rate
RateRate
Rate
1A/uS
Max Rated Power
Max Rated PowerMax Rated Power
Max Rated Power
3000W per server blade enclosure
Connections and Cables
Connections and CablesConnections and Cables
Connections and Cables
Compaq provided facility DC cable connection kit:
The facility DC connection kit supports the connection of up to four -
48VDC, RETURN pairs and ground
The power cable assemblies consist of 1/0AWG, color-coded, flexible cable
rated at 105° C, terminated with bus mating connectors at one end and
unterminated at the other end. The cable length provided enables the
customer to route to a fuse panel within or adjacent to the rack.
NOTE:
NOTE: NOTE:
NOTE:
*All systems support redundant A and B feeds. Scalable bus bars support dual A and dual B
feeds.
** 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 10uF 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.
© Copyright 2005 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice.
Microsoft and Windows NT are US registered trademarks of Microsoft Corporation. Intel is a US registered trademark of Intel
Corporation.
The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and
services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial
errors or omissions contained herein.
QuickSpecs
HP ProLiant BL25p Server Blade
HP ProLiant BL25p Server BladeHP ProLiant BL25p Server Blade
HP ProLiant BL25p Server Blade
Technical Specifications
DA - 12160 North America — Version 7 — June 27, 2005
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