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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