ABB IRC5 Product Manual page 49

If the natural convection of the enclosure is to small, cooling equipment is needed
with cooling capacity according to following formula:
Q
Q
Product manual - IRC5 Panel Mounted Controller
3HAC047137-001 Revision: J
Q = Q - Q
e v s
= Required cooling output from the cooling unit
e
= Installed heat loss
v
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2 Installation and commissioning
2.3.1 Unpacking the controller
Continued
49