Inovance MD880-01S-0751-4 - Page 35

2 Mechanical Installation
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2) Cabinet with fans on the top
Insulation
barrier
Cabinet top air
outlet cover
Air inlet of front door
Ventilation airflow
Fan
2200 mm
100 mm
AC drive (T10‒T12)
Figure 2-10 Cabinet with fans on the top
Table 2-2 Speci󶍾cation of the cabinet with fans on the top
AC Drive Model
Quantity
of Fans
Total
Air
Volume
(CFM)
E󶍽ective
Area of
Cabinet
Top Air
Inlet (mm
2
)
Max. Air
Volume
Required
by the Top
Fan (CFM)
E󶍽ective Area of Cabinet Top
Air Outlet (mm
2
)
MD880-01S-0441-4-(L) 2 586 31809 703
S ＝ 0.942×N×(Dout2-
DHUB2)
In the preceding formula,
N indicates the number of
top fans, Dout indicates the
diameter of the top fan, and
DHUB indicates the diameter
of the top fan center HUB.
MD880-01S-0481-4-(L) 2 722 31809 866
MD880-01S-0538-4-(L) 3 789 47713 978
MD880-01S-0605-4-(L) 3 882 47713 1058
MD880-01S-0673-4-(L) 3 644 47713 733
MD880-01S-0751-4-(L) 3 796 47713 955
MD880-01S-0849-4-(L) 3 796 47713 955
Note:
1. CFM = 0.0283 m
3
/min
2. "E󶍽ective Area" indicates the through-hole area.