E6581381

Calorific values of the inverter and the required ventilation

1

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.

Note1: 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

Note2: Case of 100% Load Continuation operation.

 

Operating motor

Calorific Values (w)

Amount of forcible air

Heat discharge surface

Voltage class

capacity

Carrier frequency

Carrier frequency

cooling ventilation required

area required for sealed

 

(kW)

8kHz

12kHz

(m3/min)

storage cabinet(m2)

 

0.4

-

44

0.25

0.88

 

0.75

-

63

0.36

1.26

 

1.5

-

101

0.58

2.02

 

2.2

-

120

0.68

2.4

 

4.0

-

193

1.1

3.86

Three-Phase

5.5

-

249

1.42

4.98

200V class

7.5

-

346

1.97

6.92

 

11

-

459

2.62

9.18

 

15

-

629

3.59

12.58

 

18.5

698

-

3.98

13.96

 

22

763

-

4.35

15.26

 

30

1085

-

6.18

21.7

 

0.4

-

45

0.26

0.9

 

0.75

-

55

0.31

1.1

 

1.5

-

78

0.44

1.56

 

2.2

-

103

0.59

2.06

 

4.0

-

176

1.0

3.52

Three-Phase

5.5

-

215

1.23

4.3

400V class

7.5

-

291

1.66

5.82

11

-

430

2.45

8.6

 

 

15

-

625

3.56

12.5

 

18.5

603

-

3.44

12.06

 

22

626

-

3.57

12.52

 

30

847

-

4.83

16.94

Panel designing taking into consideration the effects of noise

The inverter generates high frequency noise. When designing the control panel setup, consideration must be given to that noise. Examples of measures are given below.

Wire so that the main circuit wires and the control circuit wires are separated. Do not place them in the same conduit, do not run them parallel, and do not bundle them.

Provide shielding and twisted wire for control circuit wiring.

Separate the input (power) and output (motor) wires of the main circuit. Do not place them in the same conduit, do not run them parallel, and do not bundle them.

Ground the inverter ground terminals ().

A-22

Page 34
Image 34
Toshiba VF-FS1 instruction manual Operating motor Calorific Values w