Ambient Condition Of The Frequency Inverter (Temperature, Altitude); Required Derating In Case Of 50Deg, 55Deg Of Ambient Temperature - Hitachi SJ100 SERIES Service Manual
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4. Ambient Condition of the Frequency Inverter
4-1. Required Derating in case of 50deg, 55deg of Ambient Temperature
Inverter ratings can be influenced by many factors. You can find in this section, the relation between
ambient temperature and output current (%) and carrier frequency.
% rate of output
SJ100-002NFE(U)
current
100%
90%
80%
70%
0.5
2
4
Carrier frequency [kHz]
SJ100-007NFE(U)
100%
90%
80%
70%
0.5
2
4
Carrier frequency [kHz]
Standard ratings in 40 degree C
Top cover removed condition in 50 degree C max.
Top cover removed condition in 55 degree C max.
6
8
10
12
14
6
8
10
12
14
% rate of output
current
100%
90%
80%
70%
0.5
2
4
16
Carrier frequency [kHz]
100%
90%
80%
70%
0.5
2
4
16
Carrier frequency [kHz]
4-1
SJ100-004NFE(U)
6
8
10
12
SJ100-015NFE(U)
6
8
10
12
14
16
14
16
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