Mechanical Installation (T1 to T9 Models)
‑87‑
AC Drive Power
Cooling Air Flow (CFM)
22 kW
58
30 kW
130
37 kW
102
45 kW to 55 kW
125
75 kW to 90 kW
225
110 kW
350
132 kW
541
160 kW
620
Note: 1 CFM = 0.02832 m
3
/min
Design of the cabinet fan
To select the fan for the cabinet, do as follows:
1. Calculate the sum of the cooling air volume required by all AC drives based on
"
Table 4–4 AC drive cooling air volume
"
on page 86
.
2. Determine the maximum air volume (Qmax) of the cabinet fan.
3. Determine the specification and quantity of the fan based on the maximum air
volume (Qmax).
Where:
● Maximum air volume of the cabinet = 1.3 to 1.5 times the total cooling air volume
● Maximum air volume of the cabinet = 1.6 to 2.2 times the total cooling air volume
if mesh filters, shutters, or other components are installed at the cabinet air outlet.
Note
Select a fan whose air volume is not smaller than the maximum air volume Qmax. Install
multiple fans in parallel if one fan alone cannot meet the requirements.
The common specifications of the fan air volume is shown below.
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