User's Manual

R ack Mounting Chapter 5: Optional Equipment
Rack Mounting
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Rack Mount Instructions
to be followed in all rack mount installations for all voltage range equipment (+27 VDC , -48
VDC , and A/C):
1. Elevated Operating Ambient - If installed in a closed or multi -unit rack assembly , the
operating ambient temperature of the rack environment may be greater than room
ambient. Therefore, consideration should be given to installing the equipment in an
environment compatible with the maximum ambient temperature of the equipment (55C)
2. Reduced Air Flow - Installation of the equipment in a rack should be such that the amount
of air flow required for safe operation of the equipment is not compromised.
3. Mechanical Loading - Mounting of the equipment in the rack should be such that a
hazardous condition is not achieved due to uneven mechanical loading.
4. Circuit Overloading - Consideration should be given to the connection of the equipment to
the supply circuit and the effect that overloading of the circuits might have on over current
protection and supply wiring. Appropriate consideration of equipment nameplate ratings
should be used when addressing this concern.
5. Reliable Earthing - Reliable earthing of rack -mounted equipment should be maintained.
P articular attention should be given to supply connections other than direct connections to
the branch circuit (e.g. use of power strips).
5 -2 68P09277A59 -8
PRELIMINARY - UNDER DEVELOPMENT MA Y 2007