Fagor AXD 1.25 - Page 154

Drive modules
188
3.
DRIVE MODULES
Compact drives
154
DDS
HARDWARE
Ref.1310
Power derating
The following graph shows the variation suffered by the output rated pow-
er of the compact drive (for all its models) depending on the installation al-
titude over sea level.
F. H3/107
Current derating on “SCD 2.75” drives for fc = 8 kHz.
F. H3/108
Derating of rated output power depending on the above-sea-level altitude
of the installation.
35 40 55 60
20
I (Arms)
Tambient
°C (°F)
45 50
(95)
(104)
(113) (122) (131) (140)
30
Imax
40
10
50
0
SCD 2.75
Tª ambient Imax.
°C °F Arms
35 95
39.0
40 104
39.0
45 113
39.0
50 122
37.7
55 131
33.5
60 140
29.2
1000
Multiplying factor
(non-dimensional)
Altitude (m)
0 2000 3000 4000 5000
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Output rated power ratio
Altitude
meters
Factor
non-dimensional
01.00
1000 1.00
2000 0.82
3000 0.71
4000 0.65
5000 0.62