HP Xw25p HP BladeSystem p-Class System Overview and Planning - Page 40

Facility DC power connection, Power phases and 3U power supply enclosures

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Figure 28: Maximum output power capacity For more information about the HP BladeSystem p-Class Sizing Utility, refer to http://www.hp.com/go/bladesystem/sizingutility Facility DC power connection Facility DC power requires a Facility DC Power Connection Option Kit to distribute the current through the mini or scalable bus bars to the server blade enclosures. The HP BladeSystem p-Class system requires -48 VDC with no more than ±10% voltage variance. If using facility DC power, power supplies and power enclosures are not needed for operation, because the DC Power Connection Option Kit provides power through a direct connection to the bus bars. Power phases and 3U power supply enclosures The HP BladeSystem p-Class solution is designed for AC input power from either single-phase or three-phase power sources. Three-phase power supports maximum density configurations and is highly recommended. Geography and number of AC phases dictate the appropriate model of 3U power enclosure for the data center. Each model of 3U power enclosure uses a different connector, as detailed in the following chart. Additionally, each 3U power enclosure requires two separate 30 A power feeds. 40

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Figure 28: Maximum output power capacity
For more information about the HP BladeSystem p-Class Sizing Utility, refer to
Facility DC power connection
Facility DC power requires a Facility DC Power Connection Option Kit to distribute the current through
the mini or scalable bus bars to the server blade enclosures. The HP BladeSystem p-Class system
requires –48 VDC with no more than
±
10% voltage variance. If using facility DC power, power
supplies and power enclosures are not needed for operation, because the DC Power Connection
Option Kit provides power through a direct connection to the bus bars.
Power phases and 3U power supply enclosures
The HP BladeSystem p-Class solution is designed for AC input power from either single-phase or
three-phase power sources. Three-phase power supports maximum density configurations and is
highly recommended.
Geography and number of AC phases dictate the appropriate model of 3U power enclosure for the
data center. Each model of 3U power enclosure uses a different connector, as detailed in the
following chart. Additionally, each 3U power enclosure requires two separate 30 A power feeds.