User Service Guide, Fifth Edition - HP Integrity rx8640 SEU

Circuit Breaker
The Marked Electrical for the SEU is 7A per line cord. The recommended circuit breaker size is
20 amps for North America. For countries outside North America, consult your local electrical
authority that has jurisdiction for the recommended circuit breaker size.
The SEU contains two C20 power receptacles located at the bottom rear bulkhead. A minimum
of one power cord must be used to maintain normal operation of the SEU. A second cord can be
added to improve system availability by protecting, for example, against power source failures
or accidentally tripped circuit breakers. The SEU can receive AC input from two different AC
power sources.
System AC Power Specifications
Power Cords
Table 2-3 lists the various power cables available for use with an SEU. Each power cord is 15 feet
(4.5 meters) in length with a IEC 60320-1 C19 female connector attached to one end.
Table 2-3 Power Cords
Where UsedDescriptionPart Number
International—OtherStripped end, 240 V8120-6895
InternationalMale IEC309, 240 V8120-6897
ChinaMale GB-1002, 240 V8121-0070
North America/JapanMale NEMA L6-20, 240 V8120-6903
System Power Specifications
Table 2-4 and Table 2-5 list the AC power requirements for the SEU. These tables provide
information to help determine the amount of AC power needed for your computer room.
Table 2-4 AC Power Specifications
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 cord7 ARated line current
Per line cord36 A peak for 20 msMaximum inrush current
20 msDropout carry-through time at minimum
line voltage
Per line cord20 ACircuit breaker rating
At all loads at 50–100% of supply
ratingAt all loads at 25–50% of supply
rating
>0.98>0.95Power factor correction
Per line cord< 3 mAGround leakage current (mA)
28 Server Site Preparation