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Increasing energy efficiency with modular HP three-phase 
power distribution 

technology brief 

Abstract.............................................................................................................................................. 2

 

Introduction......................................................................................................................................... 2

 

Power distribution in data centers ...................................................................................................... 2

 

Concerns and trends in designing power infrastructures........................................................................ 3

 

Why three-phase power? .................................................................................................................. 4

 

Three-phase UPS technology ................................................................................................................. 5

 

UPS load considerations ................................................................................................................... 5

 

UPS topologies: single-conversion versus double-conversion .................................................................. 6

 

HP solution: high-efficiency three-phase UPSs....................................................................................... 7

 

Three-phase power distribution technology ............................................................................................. 8

 

Load balancing and monitoring ......................................................................................................... 8

 

Cable reduction ............................................................................................................................... 9

 

HP solutions: PDR and pre-configured distribution cables .................................................................... 10

 

Configuration examples...................................................................................................................... 11

 

High-density system using conventional cooling ................................................................................. 11

 

High-density system using chilled-water cooling ................................................................................. 12

 

Conclusion........................................................................................................................................ 13

 

For more information.......................................................................................................................... 14

 

Call to action .................................................................................................................................... 14

 

 

 

Summary of Contents for 204451-002 - UPS T2200 XR

Page 1: ...PS load considerations 5 UPS topologies single conversion versus double conversion 6 HP solution high efficiency three phase UPSs 7 Three phase power distribution technology 8 Load balancing and monit...

Page 2: ...al load properly with facility power to ensure safe and cost efficient operation Power distribution in data centers The typical data center uses power that originates from the utility power grid and i...

Page 3: ...tery power until utility power is restored to within the accepted operating range or until the building generator can produce the required power whichever comes first Once UPS input power resumes eith...

Page 4: ...fits of distributing three phase power to individual racks become more significant Strictly speaking IT equipment ITE does not use three phase power1 the benefits are in its distribution These benefit...

Page 5: ...erated by most power supply units is typically within the 47 to 64 Hz range to accommodate worldwide applications UPS must maintain output frequency within the acceptable range Power factor correction...

Page 6: ...gure 4B includes a rectifier In normal operation the rectifier processes the AC input voltage and routes the DC to the inverter that produces the output In online operation the batteries provide the i...

Page 7: ...t that meets load requirements When AC input power is absent the system goes into battery mode Figure 5 HP RP12000 3 UPS Figure 6 DCOD topology used in HP three phase UPSs One characteristic of the DC...

Page 8: ...o 85 percent efficiency at the same loading Three phase power distribution technology The benefits of distributing three phase power to individual racks become significant for high density installatio...

Page 9: ...planning Racks receiving two AC buses will require power distribution units PDUs to be installed in pairs to achieve a balance of equipment loading With three phase distribution each equipment rack re...

Page 10: ...ferent levels of load monitoring Circuit monitoring panel provides local display of current loading at the distribution panel level Enhanced monitoring provides local display of current demand voltage...

Page 11: ...60 kilowatts through a PD rack and power distribution cables to a high density system of four 15 kW ITE racks In this example the ITE racks use conventional air cooling as supplied through plenums in...

Page 12: ...ts of power distributed through the HP PDR In this example the HP Modular Cooling System MCS is used to provide chilled water forced air cooling for the IT equipment The UPSs and PDR use conventional...

Page 13: ...T equipment and power distribution products from different sources to build a complete datacenter There were always concerns of how easily efficiently and reliably components from different vendors wo...

Page 14: ...er white papers http h18004 www1 hp com products servers technology whit epapers datacenter html Call to action Send comments about this paper to TechCom HP com 2007 Hewlett Packard Development Compan...

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