English
TECHNICAL SPECIFICATIONS
A ltitud e
(m )
Io ,no m
(% )
V in
(% )
0
1 0 0 %
1 0 0 %
5 0 0
1 0 0 %
1 0 0 %
1 0 0 0
1 0 0 %
1 0 0 %
1 5 0 0
9 5 %
1 0 0 %
2 0 0 0
9 0 %
1 0 0 %
2 5 0 0
8 5 %
9 5 %
3 0 0 0
8 0 %
8 9 %
3 5 0 0
7 5 %
8 4 %
4 0 0 0
7 0 %
7 8 %
50%
60%
70%
80%
90%
100%
110%
0
500
1000
1500
2000
2500
3000
3500
4000
R
e
duc
�
on F
ac
tor
(%
)
Altitude (m)
Io,nom
(%)
Vin
(%)
Figure 8.4:
Current derating as a function of the installation altitude
8.2.5 Other Derating Factors
There are factors related to the inverter application that require rated current derating. In these cases, WEG must
be consulted.
Prolonged inverter operation at low output frequencies (<5 Hz).
Repetitive cycle applications with high motor current at low speeds (e.g., accelerations and decelerations).
The current derating factor must be set in the C1.6.4 parameter (Manual Reduction Inom).
CFW900 | 105
Summary of Contents for CFW900
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