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2.8.3 Three-Phase Power Feed


2.8.3 Three-Phase Power Feed
Three-phase power feed is a method of receiving power feeds from a three-phase power supply rather than a single-phase power supply.
The customer needs to prepare an external power distribution unit for three-phase power feed for the SPARC M12-2S. There are two types of three-phase power feed: three-phase star connection and three-phase delta connection.

Figure 2-16, Figure 2-17, and Figure 2-18 show power supply systems with three-phase power feed.
Figure 2-16  Power Supply System With Three-Phase Power Feed (Star Connection)
Figure 2-16  Power Supply System With Three-Phase Power Feed (Star Connection)
Figure 2-17  Power Supply System With Three-Phase Power Feed (Delta Connection)
Figure 2-17  Power Supply System With Three-Phase Power Feed (Delta Connection)
Figure 2-18  Power Supply System With Three-Phase Power Feed (Expansion Rack)
Figure 2-18  Power Supply System With Three-Phase Power Feed (Expansion Rack)
*1 In expansion rack 1

*2 In expansion rack 2
Note - The system consumes no power when there is no device connected to the PDU outlets. For the wiring of power cords within the expansion rack, see Figure 2-24.