• Cabinet airflow requirements
provides the cabinet requirements and specifications.
Table 23: Cabinet Requirements and Specifications
Cabinet Requirement
Guidelines
Cabinet size
•
You can mount the device in a cabinet that contains a 19-in. rack as defined by
the Electronic Components Industry Association (
) or
an ETSI rack as defined in the European Telecommunications Standards
Institute (ETS 300 119) published by the European Telecommunications
Standards Institute (ETSI).
•
The minimum cabinet size must be able to accommodate the maximum
external dimensions of the device.
Cabinet clearance
The minimum total clearance inside the cabinet is 30 in. (76.2 cm) between the
inside of the front door and the inside of the rear door.
Cabinet airflow
requirements
When you mount the device in a cabinet, ensure that ventilation through the
cabinet is sufficient to prevent overheating.
•
Ensure adequate cool air supply to dissipate the thermal output of the device
or devices.
•
Ensure that the hot air exhaust of the chassis exits the cabinet without
recirculating into the device. An open cabinet (without a top or doors) that
employs hot air exhaust extraction from the top ensures the best airflow
through the chassis. If the cabinet contains a top or doors, perforations in
these elements assist with removing the hot air exhaust.
•
Install the device in the cabinet in a way that maximizes the open space on the
side of the chassis that has the hot air exhaust.
•
Route and dress all cables to minimize the blockage of airflow to and from the
chassis.
•
Ensure that the spacing of rails and adjacent cabinets is such that there is
proper clearance around the device and cabinet.
•
A cabinet larger than the minimum required provides better airflow and
reduces the chance of overheating.
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