Mechanical Design
‑38‑
Figure 2‑10 Forced‑ventilated cabinet (with fans at the top of the cabinet)
Table 2–10 Parameters of a forced‑ventilated cabinet
AC Drive Model
Quantity of
Fans
Total Air
Volume (CFM)
Effective Area of the
Cabinet Air Inlet
(mm
2
)
Max. Air Volume
Required by the Fans
(CFM)
Effective Area of the
Cabinet Air Outlet
(mm
2
)
T10 (220 kW)
2 586 31809 703
T10 (250 kW)
2 722 31809 866
T11 (280 kW)
3 789 47713 947
T11 (315 kW)
3 882 47713 1058
T12 (355 kW)
3 644 47713 773
T12 (400 kW)
3 796 47713 955
T12 (450 kW)
3 796 47713 955
Note
● CFM = 0.0283 m
3
/min
● "Actual Effective Area" indicates through‑hole area.
As shown in the following figure, an insulation barrier is required to prevent hot air
exhausted from the AC drive circulating inside the cabinet.
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