WEG CFW-11 User Manual - page 31
Installation and Connection
3
CFW-11 | 3-5
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 on page 8-2
in the
column "Power dissipated in watts, surface mount".
Cooling air flow according to the
Table 3.1 on page 3-5
.
The position and diameter of the mounting holes according to the
Figure 3.1 on page 3-3
.
Flange mounting:
ATTENTION!
The part of the inverter that stays outside the cabinet is rated IP20. See
Section 8.2 ELECTRONICS/
GENERAL DATA on page 8-6
.
The power specified in
Table 8.1 on page 8-2
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 2.4 on page
2-10
, 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 on page 3-3
.
Table 3.1 - Cooling air flow for frame sizes F, G and H models
Model
Frame Size
CFM
I/s
m³/min
CFW110242T4
F
250
118
7.1
CFW110312T4
320
151
9.1
CFW110370T4
380
180
10.1
CFW110477T4
460
217
13.0
CFW110515T4
G
680
321
19.3
CFW110601T4
CFW110720T4
CFW110760T4
1020
481
28.9
CFW110795T4
H
1100
520
31.2
CFW110877T4
CFW111062T4
CFW111141T4