3-Phase Power in the Data Center

Data Center Knowledge

December 22, 2021

1 Min Read

High density computing with increased server implementation, greater equipment densities, increased power demands, cost reduction initiatives, green directives and redundancy are driving the demand for 3-Phase power in the data center equipment cabinet. 

The principles of 3-Phase power are not always well understood by the installer, whose only task is to power up the equipment being installed in the computer rack. Load balancing (matching current draw on each phase) is critical in these applications for multiple reasons:

  • If the three phases are not balanced, heat is generated resulting in higher cooling costs.

  • Unbalanced loads lead to inefficiency and higher power bills.

  • High loads on a single phase means greater chance of tripping either a PDU or upstream breaker, and losing power at the rack.

This paper will explore 3-Phase power, how it works, why it is more efficient and many other advantages it provides to the data center.

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