3 Installation
3.3 Mount ing
74 DA1 Variable Frequency Drives 11/16 MN04020005Z-EN www.eaton.com
Table 5: Minimum clearances and required cooling airflow
The values in 5 are recommended values for an ambient air temperature of
up to +50 °C for IP20 and +40 °C for IP55 and +40 °C in FS8 (IP20), an
installation altitude of up to 1000 m, and a switching frequency of up to
8kHz.
Frame size
(degree of
protection)
a b c Required airflow
MM in MM Occur
in
mm Occur
in
m
3
/h cfm
FS2 (IP20)
50 1.97 31 1.22 75 2.95 70 41
FS2 (IP66) 0 0 12 0.47 150 5.91 0 0
FS3 (IP20) 50 1.97 31 1.22 100 3.94 190 112
FS3 (IP66) 0 0 13 0.51 150 5.91 0 0
FS4 (IP 55) 10 0.39 71 2.8 200 7.87 425 250
FS5 (IP 55) 10 0.39 70 2.76 200 7.87 425 250
FS6 (IP 55) 10 0.39 140 5.52 200 7.87 650 383
FS7 (IP 55) 10 0.39 140 5.52 200 7.87 650 383
FS8 (IP20) 50 1.97 162 6.38 350 13.78 825 485
→
Typical heat loss makes up about 3 % of the operational load
conditions.
→
Please note that the mounting makes it possible to open and
close the control signal terminal covers without any problems.
Figure 39:Minimum required clearance in front of the
variable frequency drive when installed in an
enclosure (control panel)
Frame size
Minimum clearance
①
FS2, …, FS7
≧ 15 mm (≧ 0.59 inch)
FS8 ≧ 50 mm (≧ 1.97 inch)