2 Design
2 - 8
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
Derating at the light load
Voltage 200-V class 400-V class
Capacity
[kW]
Light load mode Light load mode
Necessity
of derating
Max. carrier
frequency fc
[kHz]
Derating at
fc = 12 kHz
Necessity of
derating
Max. carrier
frequency fc
[kHz]
Derating at
fc = 12 kHz (8 kHz
for 75 kW or more)
0.4 No 12 100% No 12 100%
0.75 No 12 100% No 12 100%
1.5 No 12 100% No 12 100%
2.2 No 12 100% No 12 100%
3.7 Yes 6 90%
(17.6 A max.)
Ye s 1 0 9 0 %
(9.9 A max.)
5.5 No 12 100% No 12 100%
7.5 No 12 100% No 12 100%
11 Yes 7 90%
(52.2 A max.)
No 12 100%
15 Yes 8 90%
(65.7 A max.)
No 12 100%
18.5 Yes 6 90%
(76.5 A max.)
Ye s 8 9 5 %
(40.8 A max.)
22 Yes 5 90%
(101.7 A max.)
Ye s 8 9 0 %
(51.3 A max.)
30 Yes 8 80%
(112.0 A max.)
Ye s 1 0 8 0 %
(56.0 A max.)
37 Yes 3 75%
(126.7 A max.)
Ye s 9 9 0 %
(76.5 A max.)
45 Yes 8 90%
(189.0 A max.)
Ye s 8 8 0 %
(84.0 A max.)
55 Yes 3 90%
(243.0 A max.)
Ye s 6 7 5 %
(101.2 A max.)
75–––Yes790%
(144.0 A max.)
90–––Yes380%
(156.0 A max.)
110 – – – Yes 4 85%
(195.5 A max.)
132 – – – Yes 3 70%
(203.0 A max.)