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52 Unidrive SPM User Guide
www.controltechniques.com Issue Number: 3
Figure 5-31 Enclosure design example
Drive selection
Select drives necessary to achieve desired output current based on
altitude calculation and other drive derates (e.g. paralleling derates,
switching frequency derates, ambient derate etc).
Enclosure design to prevent recirculation of hot air
Figure 5-32 Recommended enclosure design
For front view of enclosure, refer to Figure 5-31.
Spacing between units and sides of enclosure: >60mm
air
Input air
flow
Output air
flow
Enclosure
vent
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