Planning the cabinet assembly
30
In IP54 (UL type 12) cabinets, thick filter mats are used to prevent water splashes
from entering the cabinet. This entails the installation of additional cooling
equipment, such as a hot air exhaust fan.
The installation site must be sufficiently ventilated.
Preventing the recirculation of hot air
Outside the cabinet
Prevent hot air circulation outside the cabinet by leading the outcoming hot air away
from the area where the inlet air to the cabinet is taken. Possible solutions are listed
below:
• gratings that guide air flow at the air inlet and outlet
• air inlet and outlet at different sides of the cabinet
• cool air inlet in the lower part of the front door and an extra exhaust fan on the
roof of the cabinet.
HOT
AREA
Main air flow out
Main air flow in
COOL AREA
Cabinet (side view)
HOT AREA
Air flow out
Air flow in
Air baffle
plate
COOL AREA
Cabinet (side view)
Flange mounting
Normal vertical mounting
Air baffle
plates
Main
air
flow
in
Main
air
flow
out
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