HP 9000 rp8420 Server - User Service Guide, Fifth Edition

installation earth or, if supplied by a separately derived system, at the supply transformer or
motor-generator set grounding point.
Circuit Breaker
The Marked Electrical for the HP 9000 rp8420 server is 15 amps per line cord. The recommended
circuit breaker size is 20 amps for North America. For countries outside North America, consult
your local electrical authority having jurisdiction for the recommended circuit breaker size.
The HP 9000 rp8420 server contains four C20 power receptacles located at the bottom rear
bulkhead. A minimum of two power cords must be used to maintain normal operation of the
HP 9000 rp8420 server. A second set of two cords can be added to improve system availability
by protecting, for example, against power source failures or accidentally tripped circuit breakers.
The HP 9000 rp8420 server can receive AC input from two different AC power sources.
System AC Power Specifications
Power Cords
Table B-3 lists the various power cables available for use with an HP 9000 rp8420 server system.
Each power cord is 15 feet (4.5m) in length with an IEC 60320-1 C19 female connector attached
to one end.
Table B-3 Power Cords
Where UsedDescriptionPart Number
International—OtherStripped end, 240 volt8120-6895
InternationalMale IEC309, 240 volt8120-6897
North America/JapanMale NEMA L6-20, 240 volt8120-6903
ChinaMale GB-1002, 240 volt8121-0070
System Power Specifications
Table B-4 and Table B-4 list the AC power requirements for the HP 9000 rp8420 server. These
tables provide information to help determine the amount of AC power needed for your computer
room.
Table B-4 Power Requirements
CommentsValueRequirements
200–240 VACNominal input voltage
180 VACMinimum operating voltage
269 VACMaximum operating voltage
50/60 HzFrequency range (minimum– maximum)
1Number of phases
Per line cord15 ARated line current
Per line cord54 A peak for 20 msMaximum inrush current
20 msDropout carry-through time at minimum
line voltage
Per line cord20ACircuit breaker rating
At all loads of 50–100% of supply rating
At all loads 0f 25–50% of supply rating
>0.98 >0.95Power factor correction
Per line cord<3.0 (ma)Ground leakage current (mA)
178 System Specifications