2 Design
2 - 6
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
For the calculation of heat radiation from a cabinet, the following table shows the amount of heat
generation (loss) according to the inverter capacity.
The table below shows the derating specifications for the rated output current of the 3G3RX-V1 Series
Inverter.
Make sure that you use the correct data. The derating value differs between the heavy load mode and
the light load mode.
• Necessity of derating (Yes/No): Shows whether derating is necessary.
• Max. carrier frequency fc: Shows the maximum carrier frequency for which derating is not
necessary.
• Derating at fc = ** kHz: Shows the rated output current reduction rate when the carrier
frequency is set to ** Hz.
Loss according to the Inverter Capacity
Voltage 200-V class/400-V class
Capacity
[kW]
Heavy load Light load
Loss at 70%
load [W]
Loss at 100%
load [W]
Efficiency at
rated output [%]
Loss at 70%
load [W]
Loss at 100%
load [W]
Efficiency at
rated output [%]
0.4 64 70 85.1 76 88 89.5
0.75 76 88 89.5 102 125 92.3
1.5 102 125 92.3 127 160 93.2
2.2 127 160 93.2 179 235 94.0
3.7 179 235 94.0 242 325 94.4
5.5 242 325 94.4 312 425 94.6
7.5 312 425 94.6 435 600 94.8
11 435 600 94.8 575 800 94.9
15 575 800 94.9 698 975 95.0
18.5 698 975 95.0 820 1,150 95.0
22 820 1,150 95.0 1,100 1,550 95.0
30 1,100 1,550 95.0 1,345 1,900 95.1
37 1,345 1,900 95.1 1,625 2,300 95.1
45 1,625 2,300 95.1 1,975 2,800 95.1
55 1,975 2,800 95.1 2,675 3,800 95.2
75 2,675 3,800 95.2 3,375 4,800 95.2
90 3,375 4,800 95.2 3,900 5,550 95.2
110 3,900 5,550 95.2 4,670 6,650 95.2
132 4,670 6,650 95.2 5,660 8,060 95.2
Derating of Rated Output Current
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