Fujitsu SPARC Enterprise M8000 Service Manual page 525

The ACSTPH_C is a unit that receives three-phase (delta) power for the M9000 server
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three-phase dual power feed cabinet and switches between three-phase and single-phase.
This unit uses two power cables to receive power, switch from three-phase to single-phase
current internally, and distribute AC power to 30 PSUs.
AC Section (ACSTPH_C)
FIGURE B-25
The ACSTPH_D is a unit that receives three-phase (star) power for the M9000 server
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three-phase dual power feed cabinet and switches between three-phase and single-phase.
This unit uses two power cables to receive power, switch from three-phase to single-phase
current internally, and distribute AC power to 30 PSUs.
AC Section (ACSTPH_D)
FIGURE B-26
Appendix B Components B-31