G-6 specifications – Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual User Manual
Page 292
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Publication 1398-5.2 – PDF 1997
G-6
Specifications
T = 4.08 * (Q/A) + 1.1
where:
T = Temperature difference between inside air and outside ambient (
°
F)
Q = Heat generated in enclosure (watts)
A = Enclosure surface area in ft.
2
= (2dw + 2dh + 2wh) / 144
d = Depth in inches
h = Height in inches
w = Width in inches
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