Site Preparation Guide, Eighth Edition - Superdome HP 9000 Systems

xiii
WARNING Provide a disconnect device to protect against abnormal hazards.
Systems configured with a full complement of cells, memory, and I/O and connected
to a 5-wire source must have a maximum 24A 3-phase with neutral (4-pole) circuit
breaker installed as part of the building installation.
Systems configured with a full complement of cells, memory, and I/O and connected
to a 4-wire source must have a maximum 44A 3-phase (3-pole) circuit breaker
installed as part of the building installation.
CAUTION Refer to Table E-1 on page 104 to select the appropriate size circuit breaker for systems
configured without a full complement of cells, memory, and I/O.
Table E-1 on page 104 shows Superdome power requirements by configuration (i.e. number of cell boards,
amount of memory per cell, and number of I/O chassis). This requirement applies to 32-way-capable systems
with PA8600 or PA8700 processors.
There are two columns of power numbers (Watts). The Power Breaker column shows the power used to size
the wall breaker at the installation site. The Typical Power column shows typical power. Typical power
numbers are for PA8600 systems and may be used to assess average utility cost of cooling and electrical
power. Expect these typical numbers to be about 18% less for PA8700 systems.
CAUTION For supply connections, use wires suitable for at least 105 °C.
Utillser des fils convenant á une température de 105 °C pour les connexions d’allmenation.
Network Connected EquipmentThe installation must provide a ground connection for the network
equipment.
CAUTION Sweden: Apparaten skall anslutas till jordat uttang när deb abskuts till ett nätverk.
IOX Multiple Power Sources and Cords
This equipment may be configured with dual-input line sources. Hazardous voltages and energy may be
present even after the removal of a single input source. Trained service personnel must follow the guidelines
stipulated in the Service Guidelines section of the Superdome EPSS.
IOX Only:
WARNING Remove both input power sources before replacing an internal fuse.
Circuit Interruption Simultaneous trip of all poles
Ground The protective earth (PE) ground wire is not
switched
Table 4 Wall Disconnect Device Circuit Breaker Specification (Continued)