Cooling Air Intake Through Bottom Of Cabinet; Example - ABB ACQ800 Series Hardware Manual

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Cooling air intake through bottom of cabinet

Units with air intake through the bottom of the cabinet are intended for installation on
an air duct in the floor. The required air inlets in the floor are as listed below. Refer
also to the dimensional drawings delivered with the unit.
• for DSU supply cubicles: w × 505 mm (19.88 in), where w equals cubicle width –
50 mm (1.97 in)
• for ISU supply cubicles, inverter unit cubicles, control cubicles: w × 400 mm
(15.75 in), where w equals cubicle width – 50 mm (1.97 in)
• w × 130 mm (5.12 in) at the back of the cabinet line-up, where w equals the total
width of adjacent cubicles with air inlets. This area may or may not be consistent
through the width of the whole line-up.

Example

Input fuse cubicle
Cubicle width: 400 mm
Air inlet size:
350 × 400 mm
Notes:
• The plinth of the cabinet must be supported all around.
• The air duct must be able to supply a sufficient volume of cooling air. The
minimum air flow values are given in the Technical data section of the Hardware
Manual.
• The cubicles of diode supply units require a larger air inlet area than other
cubicles.
• Some cubicles (mainly those without active, heat-generating components) require
no air inlet.
Mechanical installation
Diode supply cubicle
Cubicle width: 700 mm
Air inlet size:
650 × 505 mm
ACQ800-37 Hardware Manual
Inverter cubicle Common motor
Cubicle width: 600 mm terminal cubicle
Air inlet size: (No air inlet required)
550 × 400 mm