Toshiba TOSVERT VF-MB1 Instruction Manual page 38

The space shown in the diagram is the minimum allowable space. Because air cooled equipment has cooling
fans built in on the top or bottom surfaces, make the space on top and bottom as large as possible to allow
for air passage.
Note: Do not install in any location where there is high humidity or high temperatures and where there are
large amounts of dust, metallic fragments and oil mist.
 Calorific values of the inverter and the required ventilation
About 5% of the rated power of the inverter will be lost as a result of conversion from AC to DC or from DC to
AC. In order to suppress the rise in temperature inside the cabinet when this loss becomes heat loss, the
interior of the cabinet must be ventilated and cooled.
The amount of forcible air-cooling ventilation required and the necessary heat discharge surface quantity
when operating in a sealed cabinet according to motor capacity are as follows.
Voltage class Inverter type
2002PL
2004PL
Single-phase
VFMB1S- 2007PL
240V class
2015PL
2022PL
4004PL
4007PL
4015PL
4022PL
Three-phase
VFMB1-
4037PL
500V class
4055PL
4075PL
4110PL
4150PL
Note 1) Case of 100% Load Continuation operation. The heat loss for the optional external devices (input
reactor, radio noise reduction filters, etc.) is not included in the calorific values in the table
Note 2) It is power consumption when power is on but is not output (0Hz), and cooling fan is activated.
Amount of forcible air
Calorific values (W)
cooling ventilation
Note 1)
required (m
4kHz 12kHz 4kHz
25 27 0.14
38 43 0.22
51 56 0.29
81 93 0.46
103 112 0.58
28 31 0.16
37 48 0.21
63 77 0.36
78 97 0.44
125 154 0.71
233 291 1.32
263 352 1.49
403 507 2.29
480 611 2.72
A-25
Heat discharge surface
area required for sealed
3 3
/min) storage cabinet (m )
12kHz 4kHz 12kHz
0.15 0.49 0.54
0.24 0.76 0.86
0.32 1.03 1.11
0.53 1.62 1.86
0.63 2.05 2.23
0.18 0.55 0.63
0.96
0.27 0.75
0.44 1.26 1.54
0.55 1.57 1.94
0.87 2.50 3.07
1.65 4.66 5.81
7.05
2.00 5.26
2.88 8.06 10.1
12.2
3.47 9.59
E6581697
1
Standby
power
requirement
(W)
Note 2)
11
11
11
11
11
15.3
15.3
15.3
17.1
17.1
22
22
31
31