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4-24 SPARC Enterprise M8000/M9000 Servers Service Manual • June 2010
4.5 Power-On/Off of Main Line Switch
4.5.1 Types of Power Supply
TABLE 4-1 shows how the components of the server vary depending on the type of
power supply. For details on the electrical specifications, see the SPARC Enterprise
M8000/M9000 Servers Site Planning Guide.
Note – When you choose three-phase power feed option, the dual power feed
option is always included.
4.5.1.1 AC Input Power
There are two types of AC input power: single-phase and three-phase.
FIGURE 4-1 and FIGURE 4-2 show how the power supplied from the external AC power
supply (distribution panel) runs through in the server. The power input from the
distribution panel is supplied to the main line switch, the switch (in case of
three-phase power feed), and the power supply unit.
TABLE 4-1 Types of Power Supply and the Components of the Server
Model
Types of power supply
Components of the server
Reference diagram
AC input power Single/Dual power
M8000 Single-phase Single power Single-phase power feed option See FIGURE 4-4.
Single-phase Dual power Rack-mountable dual power feed option See
FIGURE 4-5.
Three-phase Dual power Power cabinet + three-phase power feed
option
See
FIGURE 4-6.
M9000 Single-phase Single power Single-phase power feed option See
FIGURE 4-7.
Single-phase Dual power Power cabinet + single-phase power feed
option
See
FIGURE 4-8.
Three-phase Dual power Power cabinet + three-phase power feed
option
See
FIGURE 4-9.