Hitachi SH1-900H

7-5
Chapter 7
Specifications
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.
50℃：ND rating (normal duty rating)
45℃：LD rating (low duty rating)
40℃：VLD rating (very low duty rating)
Output Current
(A)
Carrier Frequency (kHz)
0
1
2
3
4
5
0 2 4 6 8 10 12 14 16 18
4.1A
3.1A
2.7A
2.5A
2.3A
1.5A
■SH1-00041-H(SH1-007H)
■SH1-00054-H(SH1-015H)
0
2
4
6
0 2 4 6 8 10 12 14 16 18
Output Current
(A)
Carrier Frequency (kHz)
5.4A
4.8A
4.0A
3.2A
1.6A
■SH1-00083-H(SH1-022H)
Output Current
(A)
(A)
Carrier Frequency (kHz)
8.3A
6.7A
5.5A
4.8A
3A
■SH1-00126-H(SH1-037H)
0
5
10
15
0 2 4 6 8 10 12 14 16 18
Output Current
(A)
Carrier Frequency (kHz)
VLD:12.6A
LD:11A
9A
7A
6A
3.7A
CAUTION
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
range, note that the inverter may be damaged or its
lifespan may be shortened.