MPC NetFRAME 1420, Техническое справочное руководство

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MPC Computers, LLC NetFRAME 1420
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You are responsible for installing an AC power disconnect for the entire rack unit. This
main disconnect must be readily accessible, and it must be labeled as controlling power
to the entire unit, not just to the server(s).
To avoid the potential for an electrical shock hazard, include a third wire safety grounding
conductor with the rack installation. If server power cords are plugged into AC outlets that
are part of the rack, then provide proper grounding for the rack itself. If server power
cords are plugged into wall AC outlets, the safety grounding conductor in each power
cord provides proper grounding only for the server. Provide additional, proper grounding
for the rack and other devices installed in it.
The server is designed for an AC line voltage source with up to 20 amperes of over
current protection. If the power system for the equipment rack is installed on a branch
circuit with more than 20 amperes of protection, provide supplemental protection for the
server. If more than one server is installed in the rack, the power source for each server
must be from a separate branch circuit.
The equipment rack must provide sufficient airflow to the front of the server to maintain
proper cooling.
Rack Mounting Considerations
Ambient Operating Temperature
If installed in a closed or multi-unit rack assembly, the ambient operating temperature of the rack
environment may be greater than the ambient temperature of the room. Therefore, consideration
should be given to installing the equipment in an environment compatible with the manufacturer’s
maximum rated ambient temperature (Tmra).
Reduced Airflow
Equipment should be mounted into a rack so that the amount of airflow required for safe
operation is not compromised.
Mechanical Loading
Equipment should be mounted into a rack so that a hazardous condition does not arise due to
uneven mechanical loading.
Circuit Overloading
Consideration should be given to the connection of the equipment to the power supply circuitry
and the effect that any possible overloading of circuits might have on overcurrent protection and
power supply wiring. Appropriate consideration of equipment nameplate ratings should be used
when addressing this concern.
Reliable Ground
A reliable ground must be maintained at all times. To ensure this, the rack itself should be
grounded. Particular attention should be given to power supply connections other than the direct
connections to the branch circuit (i.e. the use of power strips, etc.).