Cabinet Mounting - WEG CFW-11 Series User Manual

Installation and Connection

3.1.3 Cabinet Mounting

It is possible to mount the inverters in two manners, either on the mounting surface, or with the heatsink mounted
outside the cabinet, so that the air for cooling the power heatsink is kept outside the enclosure (flange mounting).
For these cases, consider:
Surface mounting:
Provide adequate exhaustion, so that the internal cabinet temperature remains within the allowed range for
the inverter operation conditions.
The power dissipated by the inverter at its rated condition, as specified in table 8.1 "Dissipated power in
Watts - Surface mounting".
Cooling air flow according to the table 3.1.
The position and diameter of the mounting holes according to the figure 3.1.
Flange mounting:
ATTENTION!
3
The part of the inverter that stays outside the cabinet is rated IP20.
The power specified in the table 8.1 under "Dissipated power in Watts - Flange mounting" will be dissipated
inside the cabinet. The other losses (power modules) will be dissipated at the external ventilation duct.
The inverter mounting supports and the hoisting eyes must be removed. Refer to the figure 2.2, positions I
and J.
Dimensions of the flange-mounting opening and the diameters of the securing holes must be according to
the figure 3.1.
3-4
Table 3.1 - Cooling air flow for frame sizes F and G models
Model Frame
CFW110242T4
CFW110312T4
F
CFW110370T4
CFW110477T4
CFW110515T4
CFW110601T4 G
CFW110770T4
CFM I/s m³/min
250 118
320 151
380 180
460 217
680 321
7.1
9.1
10.1
13.0
19.3