IBM System x – UPS3000 Training
© 2003 IBM Corporation
5 October 2007
© 2007 IBM Corporation
Single-phase vs. Three-Phase
C19/20 C13/14
Single Phase Three Phase
Signal
Single electrical signal between two wires Three electrical signals between three wires
Output
Single phase Three phase
Application
Typically used within a facility, often at point of
use, including:
Servers
Rack PDUs 15 to 60A
Racks
Small Computer Room
Typically used for power coming into a facility,
including:
Data Centers
Rack PDU 32 & 60A 3P
Larger Computer Rooms
High-end Servers
PDU Types
NEMA, Rack, Front End, High Density, Enterprise,
PDU+
Front End, High Density, Enterprise, PDU+
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