Report: Adoption of 400 Vac in North America

According to a recently published IHS report, Rack Power Distribution Units Report – 2015, rack power distribution unit (PDU) data shows that some data centers in North America have begun deploying higher voltage power architectures.


According to a recently published IHS report, Rack Power Distribution Units Report – 2015, rack power distribution unit (PDU) data shows that some data centers in North America have begun deploying higher voltage power architectures. Courtesy: IHS TechnologyBecause of the lower standard voltages in the Americas, this region has transitioned from single-phase rack PDUs to 3-phase rack PDUs sooner than other regions. Traditionally, North American 3-phase power is 208 Vac whereas European 3-phase is 400 Vac. However, new statistics from this study show that there has been some adoption of 400 Vac rack PDUs in North America where they accounted for more than 5% of revenue in 2014.

Data centers in North America have begun adopting 400 Vac because it requires reduced electrical drops, can lead to electrical and infrastructure savings, and contributes to overall increases in efficiency. While the efficiencies gained aren’t enough to justify retrofitting an existing facility with a new power architecture, adoption has been seen in new large data centers. The fact that some legacy or specialized data center equipment cannot be powered in 400/230 Vac scheme and would require additional step-downs is a barrier to adoption. The more granular data on 3-phase rack PDUs in the report this year will allow us to better understand and track this trend going forward. IHS anticipates seeing an uptick in the adoption of 3-phase 400 Vac rack PDUs if new data center build outs continue to pursue the higher voltage power architecture.

IHS regularly analyzes all aspects of the data center infrastructure market. The Rack Power Distribution Units Report – 2015 provides in-depth analysis across three world regions: the Americas, EMEA, and Asia. Unit shipments, average unit prices and revenue are estimated for 2013 and 2014 and forecast through 2018. The market is segmented by sub-region, product type, intelligence, power rating, input phase, form factor, vertical market, and sales channel. Supplier market share estimates, and an analysis of the competitive environment, are also provided. Additionally, IHS analyzes the market for rack power distribution units quarterly in the company’s free-to-participants “Rack PDU Tracker,” which complements the annual report.

Sarah McElroy is a research analyst on data centers, cloud, and IT infrastructure. IHS Technology is a content partner with CFE Media. You can see the Rack Power Distribution Units Report – 2015 and the original article here.

FRANCES , FL, United States, 05/21/15 09:21 AM:

I designed a data centre in trinidad and tobago in 2009/2010 using 400/230V for the PDU and rack distribution for the same reasons listed above.

Most loads are built to operate on a range of voltage from 100-240V, single phase. Hence operating on the 400/230V system, the line current is 93% lower. (Losses are proportional to the square of the current.

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