Toa N-8000 Series - Manual (Page 309)

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Chapter 3 INSTALLATION & WIRING
2. INSTALLATION Of The SUBSTATION INTeRfACe UNIT
The N-8000RS/8010RS/8400RS can be installed in any of three ways: (1) equipment rack mounting, (2) wall
mounting, and (3) desk-top installation.
2.1. equipment Rack Mounting
A) 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
(Tma) specified by the manufacturer.
B) 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.
C) Mechanical Loading - Mounting of the equipment in the rack should be such that a hazardous condition is
not achieved due to uneven mechanical loading.
D) 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 overcurrent protection and supply wiring.
Appropriate consideration of equipment nameplate ratings should be used when addressing this concern.
E) Reliable Earthing - Reliable earthing of rack-mounted equipment should be maintained. Particular attention
should be given to supply connections other than direct connections to the branch circuit (e.g. use of power
strips)."
The N-8000RS/8010RS/8400RS can be mounted on the CR-273, CR-413, or standard EIA 19" Equipment rack.
For the CR-273 and CR-413 Equipment rack assembly or BU-412 Blower unit installation, read the installation
manual supplied with the rack.
Note
When installing the Blower unit and
N-8000RS/8010RS/8400RS, lay the equipment
rack down face-up to do installation work
safely. Since the Blower unit is installed from
the inside of the rack, be sure to install it first,
before mounting the other components.
2.1.1. Setting space
For maintenance works, allow much space
between the wall and Equipment rack.
Perforated panels
Equipment rack
N-8000RS/8010RS/8400RS
N-8000RS/8010RS/8400RS
50 cm 50 cm
1 m
50 cm
2.1.2. Caution when installing the unit
Do not stack up 3 Substation
interface units or more.
If 2 or more units are mounted
in the Equipment rack, be sure
to mount the perforated panel
of 1-unit size (PF-013B) or more
above and below every 2 units.
Do not block the ventilation slots in the unit’s cover.
Doing so may cause heat to build up inside the unit and result in fire.
CAUTION