HP rp8420 HP 9000 rp8420 Server - User Service Guide, Fifth Edition - Page 178

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 Part Number 8120-6895 8120-6897 8120-6903 8121-0070 Description Stripped end, 240 volt Male IEC309, 240 volt Male NEMA L6-20, 240 volt Male GB-1002, 240 volt Where Used International-Other International North America/Japan China 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 Requirements Value Nominal input voltage 200-240 VAC Minimum operating voltage 180 VAC Maximum operating voltage 269 VAC Frequency range (minimum- maximum) 50/60 Hz Number of phases 1 Rated line current 15 A Maximum inrush current 54 A peak for 20 ms Dropout carry-through time at minimum 20 ms line voltage Circuit breaker rating 20A Power factor correction >0.98 >0.95 Ground leakage current (mA)