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Chapter 4 FRU Replacement Preparation 4-27
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