Cabinet Mounting - WEG CFW-11 User Manual

3.1.3 Cabinet Mounting

It is possible to mount the inverters with degree of protection IP2X in two ways: through the wall mounting or
flange mounting (the heatsink is mounted outside the cabinet and the cooling air of the power module is kept
outside the enclosure). Inverters Nema1 and with degree of protection IP55 can only be surface mounted. The
following information can be considered in those cases:
Surface mounting:
Provide adequate exhaustion so that the internal cabinet temperature is kept within the allowable operating
range of the inverter.
The power dissipated by the inverter at its rated condition, as specified in
power in Watts - through the wall mounting".
The cooling air flow requirements, as shown in
The position and diameter of the mounting holes, according to
Flange mounting:
The losses specified in
dissipated inside the cabinet. The remaining losses (power module) will be dissipated through the vents.
The mounting supports shall be removed and repositioned as illustrated in
The portion of the inverter that is located outside the cabinet is rated IP54. Provide an adequate gasket for
the cabinet opening to ensure that the enclosure rating is maintained. Example: silicone gasket.
Mounting surface opening dimensions and position/diameter of the mounting holes, as shown in
on page 3-3.
Table 3.1 on page
Table 8.1 on page 8-2
Table 3.1 - Cooling air flow
Frame Size CFM
A 18
B 42
C 96
D 132
Installation and Connection
Table 8.1 on page 8-2
3-5.
Figure 3.1 on page
"Dissipated power in Watts - flange mounting" will be
Figure 3.4 on page
l/s m 3 /min
8 0.5
20 1.2
45 2.7
62 3.7
"Dissipated
3-3.
3-6.
Figure 3.1
CFW-11 | 3-5
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