Toshiba TOSVERT VF-AS1 Instruction Manual page 33

200V
400V
100%
1
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 about 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
200V
400V
Note :The heat loss for the optional external devices (input reactor, DC reactor, radio noise reduction filters, etc.) is not
included in the calorific values in the table.
18.5~45kW
37~75kW
90%
80%
70%
60%
50%
2.5kHz 4kHz 8kHz 12kHz
Carrier f req uen cy ()
Applicable Motor Calorific values
(kW)
0.4
0.75
1.5
2.2
3.7
5.5
7.5
11
15
18.5
22
30 1140
37 1340
45 1570
55 1720
75 2210
0.75
1.5
2.2
3.7
5.5
7.5
11
15
18.5
22
30
37 1180
45 1360
55 1560
75 2330
90 2410
110 2730
132 3200
160 3820
200 4930
220 5405
280 6830
40°C: (a)
When the upper protection cover is removed under
condition (a)
(b)
50°C: (a)
When the upper protection cover is removed under
condition (a)
(b)
60°C: (a)
When the upper protection cover is removed under
condition (a)
(b)
16kHz
Amount of forced air cooling
ventilation required
(W)
(m 3 /min)
50 0.29
70 0.40
113 0.65
135 0.78
160 0.92
307 1.8
408 2.4
593 3.4
692 4.0
800 4.6
865 5.0
6.6
7.7
9.0
9.9
12.7
57 0.33
82 0.47
112 0.64
136 0.78
262 1.5
328 1.9
448 2.6
577 3.3
682 3.9
720 4.2
980 5.6
6.8
7.8
9.0
13.4
13.8
15.6
18.3
21.9
28.2
30.9
39.1
A-20
E6581301
Heat exchange surface area
required for sealed storage
cabinet
2
(m )
1.0
1.4
2.3
2.7
3.2
6.2
8.2
11.9
13.9
16.0
17.3
22.8
26.8
31.4
34.4
44.2
1.2
1.7
2.3
2.8
5.3
6.6
9.0
11.6
13.7
14.4
19.6
23.6
27.2
31.2
46.6
48.2
54.6
64.0
76.4
98.6
108.1
136.6