Mechanical Installation (T10 to T12 Models)
‑92‑
Table 5–2 Specifications of a forced ventilated cabinet
AC Drive Model
Quantity of Fans
Total Airflow
(CFM)
Effective Area of
the Cabinet Air
Inlet (mm
2
)
Max. Airflow
Required by the
Fans (CFM)
Effective Area of
the Cabinet Air
Outlet (mm
2
)
T9 (132 kW)
2 541 31809 649
S = 0.942 x N x
(Dout
2
– DHUB
2
)
where, N indicates
the quantity of
fans on the top,
Dout indicates the
fan diameter, and
DHUB indicates
the diameter of
the fan hub.
T9 (160 kW)
2 620 31809 744
T10 (200 kW)
2 586 31809 703
T10 (220 kW)
2 722 31809 866
T11 (250 kW)
3 789 47713 947
T11 (280 kW)
3 882 47713 1058
T12 (315 kW)
3 644 47713 773
T12 (355 kW)
3 796 47713 955
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.
Figure 5‑3 Insulation barrier in the cabinet
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