HP Modular Cooling System Site Preparation Guide

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 maximum safety and performance.
Figure 9. Raised Floor Grounding
Voltage Fluctuations and Outages
The HP Modular Cooling System is designed to provide immunity to power outages of less than one
cycle. However, testing cannot conclusively rule out loss of service. Therefore, adherence to the
following guidelines provides the best possible performance of power distribution systems for HP
equipment:
• Dedicated power source—Isolates the power distribution system from other circuits in the facility.
• Missing-phase and low-voltage detectors—Shuts equipment down automatically when a severe
power disruption occurs. For peripheral equipment, these devices are recommended but optional.
• Online uninterruptible power supply (UPS)—Keeps input voltage to devices constant and should
be considered if outages of one-half cycle or more are common. Refer to qualified contractors or
consultants for each situation.
The HP Modular Cooling System can be protected from the sources of many electrical disturbances
by using:
• An isolated power distribution system
• Power conditioning equipment
• Over- and under-voltage detection and protection circuits
• Shielding to attenuate higher frequency radiated electrical energy
• Surge protective devices on power cables to protect equipment against electrical storms
HP MCS Site Preparation Guide
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