Toshiba TOSVERT VF-AS1 Instruction Manual page 43

Calorific values of the inverter and the required ventilation
The energy loss when the inverter converts power from AC to DC and then back to AC is typically about 2.5% to 5%.
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 forced air-cooling ventilation required and the necessary heat exchange surface area when operating
in a sealed cabinet according to motor capacity are as follows.
Voltage
class
1
VFAS1-5015PM
VFAS1-5022PM
VFAS1-5030PM
VFAS1-5040PM
VFAS1-5055PM
VFAS1-5075PM
VFAS1-6022PL
VFAS1-6030PL
VFAS1-6055PL
VFAS1-6075PL
VFAS1-6110PL
VFAS1-6150PL
VFAS1-6185PL
VFAS1-6220PL
VFAS1-6300PL
VFAS1-6370PL
VFAS1-6450PL
VFAS1-6550PL
VFAS1-6750PL
VFAS1-6900PL
VFAS1-6110KPC
VFAS1-6132KPC 110kW 150HP 132kW
VFAS1-6160KPC 132kW
VFAS1-6200KPC 160kW 200HP 200kW
VFAS1-6250KPC 185kW 250HP 250kW
VFAS1-6315KPC 250kW 350HP 315kW
VFAS1-6400KPC 315kW 450HP 400kW
VFAS1-6500KPC 400kW 550HP 500kW
VFAS1-6630KPC 500kW 700HP 630kW
Note1: The heat loss for the external options (input reactor, radio noise reduction filters, etc.) is not included in the
calorific values in the table.
Note2: Each calorific value in the table refers to the quantity of heat that an inverter produces when it is operated
continuously at the factory default  (carrier frequency) under a load factor of 100%.
Calorific
Applicable Motor
values
500V 600V 690V
1.5kW 2HP
2.2kW
3HP
3kW
-
4kW
5HP
5.5kW
7.5HP
7.5kW
10HP
1.5kW 2HP 2.2kW
2.2kW 3kW
3HP
4kW 5.5kW
5HP
5.5kW 7.5kW
7.5HP
7.5kW 11kW
10HP
11kW 15kW
15HP
15kW 20HP 18.5kW
18.5kW 25HP 22kW
22kW 30kW
30HP
30kW 37kW
40HP
37kW 45kW
50HP
45kW 55kW
60HP
55kW 75kW
75HP
75kW 90kW
100HP
90kW 125HP 110kW
160kW
-
Amount of forced air cooling
ventilation required
3
(W) (m /min)
84 0.48
100 0.57
118 0.68
143 0.82
183 1.1
244 1.4
111 0.64
119 0.68
158 0.91
182 1.1
227 1.3
300 1.8
386 2.3
463 2.7
556 3.2
716 4.1
911 5.2
1087 6.2
1545 8.9
1947 11.1
2320
13.3
2740
15.7
3270
18.7
4010
22.9
5140
29.3
6290
35.9
7600
43.4
9610
54.8
11920
68.0
A-28
E6581528
Heat exchange surface area
required for sealed storage
cabinet
2
(m )
1.7
2.0
2.4
2.9
3.7
4.9
2.3
2.4
3.2
3.7
4.6
6.0
7.8
9.3
11.2
14.4
18.3
21.8
30.9
39.0
46.4
54.8
65.4
80.2
103
126
152
193
239