Technical data
C.12 Derating
Installation and Operating Instructions SINAMICS G180
Operating Instructions, 02/2019, 4BS0751-007
207
Table C- 6 Current derating for air-cooled converters
Installation alti-
tude above sea
level in m
Current derating factor in % of rated current
2)
2)
2)3)
2)3)
2)3)
2)3)
Applies only to compact devices which are not installed in a cabinet
Voltage derating must also be implemented for compact devices at an installation altitude of > 2000 m.
3)
Voltage derating must also be implemented for cabinet units at an installation altitude of > 3000 m.
The following current derating values apply to water-cooled converters. Refer to the technical
data sheet for the maximum water intake temperature.
Table C- 7 Current derating for water-cooled converters with a maximum water inlet temperature of 28 °C
Installation altitude
above sea level in
m
Current derating factor in % of rated current
1)
1)
1)
1)
1)
Voltage derating must also be implemented for cabinet units at an installation altitude of > 3000 m.