HP Modular Cooling System Generation 2 site preparation guide - Technical white paper

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Note:
The power requirements discussed in this guide are for the fans and
electronics of the HP MCS G2 only. Data processing components such as
servers, storage, and network devices must be considered separately based
on their individual power requirements.
System grounding
HP server systems require two methods of grounding: power distribution grounding for safety, and
high-frequency signal grounding for equipment performance. Power distribution grounding involves
the main building electrical service entrance, electrical conduit, facility power panels, and equipment
cabinets (including the HP MCS and server cabinets), which should be grounded using green or
yellow insulated wire conductors according to the applicable electrical codes. High-frequency
grounding consists of using ground return conductors for intra- and inter-cabinet signal interconnects
as well as chassis and cabinet grounding.
For HP MCS G2 and server systems installed on a raised floor, the floor assembly should be
electrically grounded to form a complete ground grid. An optimum raised-floor grounding solution is
shown in figure 12.
Each floor panel should have at least one supporting pedestal grounded to the power panel and
another pedestal grounded to an equipment cabinet. This broadband solution provides excellent
grounding for improved safety and performance.
Figure 12: Raised floor grounding