Server Technology BL20P Manuel D’Utilisation
Max total power
supported
supported
3000 W
9000 W
15,000 W
Total max input current
at minimum voltage
at minimum voltage
69.44 A at -43.2VDC
208.32 A at -43.2 VDC 347.2 A at -43.2 VDC
(equivalent of 175A
per feed)
per feed)
Total max input current
at nominal voltage
at nominal voltage
62.5 A at -48VDC
187.5 A at -48 VDC
312.5 A at -48 VDC
(equivalent of 175A
per feed)
(equivalent of 175A
per feed)
Max current per power
feed
feed
70A
210A
210A
Max local ambient
temperature
temperature
149° F (65° C)
149° F (65° C)
NOTE: All systems support redundant A & B feeds. Scalable bus bar supports dual A and dual B
feeds.
feeds.
Operating and
Performance
Specifications for
Facility DC
Performance
Specifications for
Facility DC
Voltage
Nominalinput voltage
-48 VDC
Operating voltage range
-48VDC ± 10% or -43.2 VDC to -52.8 VDC
Max input voltage slew
rate
rate
0.5V/uS
Redundant feed voltages* *A and B feeds must differ by no more than
5VDC during steady state operation
Ripple/Noise
480 mV PARD**
Overshoot
Must remain within regulation limits on all
feeds during startup or shutdown
feeds during startup or shutdown
Voltage Transients
Must not exceed -60 VDC
Current
Max steady state input
current
current
62.5A per server blade enclosure installed at
-48VDC
-48VDC
Max steady state current
per feed/total
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
Must support up to 2X the maximum operating current per server blade
enclosure (125 A) for up to 1.0 mS
enclosure (125 A) for up to 1.0 mS
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.
from catastrophic over-current within 20 uS. Fuse should sustain all in-
rush and operating currents.
Max Input Current
Slew Rate
Slew Rate
1A/uS
Max Input Curent Slew
Rate
Rate
3000W per server blade enclosure
Connection and
Cables
Cables
HP provided facility DC cable connection kit:
The facility DC connection kit supports the connection of up to four
-48VDC, RETURN pairs and ground.
-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.
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: *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
B feeds.
** Periodic and random noise (PARD). Maximum allowable peak-to-peak ripple and noise (as
QuickSpecs
HP ProLiant BL20p p-Class Server Blade
Technical Specifications
DA - 11411 Worldwide QuickSpecs — Version 24 — 9.24.2004
Page 33