Current Derating - Hitachi SH1 Series Basic Manual

Chapter 7

7.4 Current derating

For using with carrier frequency over 2.1kHz, or when changing load ratings to LD/VLD, refer to current derating table as below.
Please use the inverter within the current range in
accordance with the derating tables of respective
models. If you use the inverter exceeding the derating
CAUTION range, note that the inverter may be damaged or its
lifespan may be shortened.
■SH1-00041-H(SH1-007H)
5
4
3
2
2.5A
1
0
0 2 4 6 8 10 12 14 16 18
Carrier Frequency (kHz)
■SH1-00054-H(SH1-015H)
6
4
2
3.2A
0
0 2 4 6 8 10 12 14 16 18
Carrier Frequency (kHz)
4.1A
3.1A
2.7A
2.3A
1.5A
5.4A
4.8A
4.0A
1.6A
50℃：ND rating (normal duty rating)
45℃：LD rating (low duty rating)
40℃：VLD rating (very low duty rating)
■SH1-00083-H(SH1-022H)
■SH1-00126-H(SH1-037H)
15
10
5
0
0 2 4 6 8 10 12 14 16 18
7-5
Specifications
8.3A
6.7A
5.5A
4.8A
3A
Carrier Frequency (kHz)
VLD:12.6A
LD:11A
9A
7A
6A
3.7A
Carrier Frequency (kHz)