HP Modular Cooling System Przewodnik Szybki Start Pobierz pdf (Strona 43)

Facility planning for implementation 43

Voltage fluctuations and outages

The MCS-200/100 is designed to provide immunity to power outages of less than one cycle. However,

testing cannot conclusively rule out loss of service. To obtain the best possible performance of power

distribution systems for HP equipment, observe the following guidelines:

• Dedicated power source—Isolates the power distribution system from other circuits in the facility

• Missing-phase and low-voltage detectors—Automatically shuts down equipment when a severe power

disruption occurs. For peripheral equipment, these devices are recommended but optional.

• Online UPS—Maintains constant input voltage for devices and should be considered if outages of

one-half cycle or more are common. For each situation, consult a qualified contractor or consultant.

You can protect the MCS-200/100 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

• Protection to reduce high-frequency electrical energy radiation

• Surge protective devices on power cables to protect equipment against electrical storms

Electrical planning around water-handling components

CAUTION: In case water is in contact with the power cables, shut down the main breaker before

cleaning up water in this area.

Because of potential condensation on non-insulated water connections or leaking water connections around

water-based cooling systems, consider the following during the electrical planning:

• Waterproofed connectors

• Watertight conduits for cables

• Leak detection systems

To identify waterproofed connectors, HP recommends that you use the IP rating of the connector based on the

international standard IEC 60529. HP recommends a connector that is rated at least IP 67.

Cable conduits are available in different styles, depending on flexibility and materials. The most common

materials are plastic, metal, nylon, or a composition of these materials. Watertight conduits are available in

both flexible and hard material, depending on the application.

A leak detection system for a data center usually uses leak sensor cables, which are installed on the subfloor

in a raised floor and connected to a facility management system.

Connecting to facility A/C power

The MCS-200/100 accepts AC power through two Walther Procon A5 series power receptacles located at

the top rear patch panel. If available, the MCS-200 ships with one of each AC power cord set for connecting

to redundant AC power busses. The NEMA L6-20 power cord uses a NEMA L6-20 male plug for connecting

to a facility AC feed connector common to North America and Japan. The IEC 309 power cord uses an IEC

309 male plug for connecting to a facility AC feed connector common in various international regions.

These redundant connections and cords are optional for the MCS-100.

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HP Modular Cooling System Przewodnik Szybki Start Strona 43