Vacon 20 x, Инструкция по установке, техническому обслуживанию и ремонту

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3
vacon • 19 Mounting
3.3 Cooling
The AC drive produces heat in operation and is cooled down by air circulated by a fan. Enough
free space shall therefore be left around the AC drive to ensure sufficient air circulation and
cooling. Different acts of maintenance may also require certain amount of free space.
The minimum clearances given in Table 4 should be respected. It is also important to ensure
that the temperature of the cooling air does not exceed the maximum environment tempera-
ture of the converter.
Contact our factory for more information on required clearances in different installations.
Table 4. Min. clearances around AC
drive.
A = Clearance left and right from the drive
B = Clearance above the drive
C = Clearance underneath the AC drive
Figure 11. Installation space.
Note that if several units are mounted above each other the required free space equals B+C
(see the Figure 12.). Moreover, the outlet air used for cooling by lower unit must be directed
away from the air intake of the upper unit by means of e.g. a piece of metal plate fixed to the
wall between the drives as shown in Figure 12..
Min clearance [mm]
Type A B C
MU2 15 30 60
MU3 15 30 80
Type Cooling air required [m
3
/h]
MU2 50
MU3 110
Table 5. Required cooling air.
A A A
B
C
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