Output Current Derating For High Altitude - ABB ACS 600 Hardware Manual

Appendix A – ACS/ACC 600 Technical Data
Output Current Derating
For High Altitude
A-6
When the altitude of the installation site exceeds 1000 m (3300 ft.)
above sea level, the rated output current for Normal Use is decreased
by 1% for every additional 100 m (300 ft.). If the installation site is
higher than 2000 m (6600 ft.) above sea level, please contact your
local ABB distributor or office for further information. For Heavy Duty
Use, apply the I current given in the rating table up to 2000 m (6600
2HD
ft.). No derating is required.
The output current is calculated by multiplying the I
the rating table by the derating factor determined from the derating
curve.
Output Current Derating Factors for High Altitude
(Percent of I )
2N
100%
98%
96%
94%
92%
90%
88%
3300
1000
current given in
2N
4900
1500
Altitude
601/604/607 US Supplement
6600 Feet
2000
Meters