Assembling the panels
102 NXAIR / ≤ 40 kA 110-0084.9 / 15
Versions
The standard version contains a fan in the fan box. As an optional version it is also possible to install two fans,
each of them in a fan box of its own.
The forced ventilation with fan can only be used for panels with the following feeder currents:
• 4000 A (panel width 1000 mm)
Fan
Installation
The fan with fan box is to be installed on the pressure relief duct in the front area:
(1) Low-voltage compartment (2) Fan in the fan box (3) Pressure relief duct
Fig. 130: Installation area for fan box
Preparations for fan installation
To install the fan, dismantling work must be executed at the pressure relief duct and at the fan box.
In the optional version of the forced ventilation with 2 fans, each of them in a fan
box of its own, preparation and installation are done in parallel at the front in the
pressure relief duct.
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