12.96
Technical Data
Siemens AG 6SE7087-6BM70
9-7
SIMOVERT MASTER DRIVES Operating Instructions
9.1
De-rating for an increased cooling medium temperature
100
90
80
70
60
10
20
30
40
50
permissible rated current
in %
cooling medium
temperature in °C
75
Fig. 9.1
Max. permissible rated current as a function of the cooling medium temperature
9.2
De-rating at installation altitudes > 1000 m above sea level
For installation altitudes > 1000 m above sea level, the rated current must be reduced. For installation altitudes
> 2000 m above sea level, the rated voltage must be reduced (see Fig. 9.2). Installation altitudes > 4000 m
above sea level are not permissible.
permissible rated current
in %
100
90
80
60
500 1000
2000
installation altitude
in m
3000
4000
70
permissible rated voltage
in %
100
90
80
60
500 1000
2000
3000
4000
70
installation altitude
in m
according to VDE 0110 / IEC 664-1
(not valid for UL/CSA)
Fig. 9.2
Max. permissible rated current and rated voltage as a function of the installation altitude
