Derating Data; Technical Data - Siemens SINAMICS G150 Operating Manual

11/03
12.2.1

Derating Data

Current Derating as a Function of the Site Altitude and Ambient Temperature
If the cabinet units are operated at a site altitude >2000 m above sea level, the
maximum permissible output current can be calculated using the following tables.
The site altitude and ambient temperature are compensated here. The degree of
protection selected for the cabinet units must also be taken into account.
Table 12-2 Current derating as a function of the ambient temperature and site altitude for cabinet units
with degree of protection IP20 / IP21 and IP23
Site altitude
above sea level in
m
0 to 2000
Up to 2500
Up to 3000
Up to 3500
Up to 4000
Table 12-3 Current derating as a function of the ambient temperature and site altitude for cabinet units
with degree of protection IP54
Site altitude
above sea level in
m
0 to 2000
Up to 2500 100%
Up to 3000
Up to 3500 96.0%
Up to 4000 92.0%
SINAMICS G150
Operating Manual
Ambient temperature in °C
20 25 30
100%
96.7%
97.8% 92.7%
Ambient temperature in °C
20 25 30
98.0%
99.0% 94.0%
95.0% 90.0%
91.0% 87.0%
87.0% 83.0%
35 40
95.0%
96.3% 91.4%
96.2% 92.5% 87.9%
92.3% 88.8% 84.3%
88.4% 85.0% 80.8%
35 40
93.0% 90.0% 85.0%
90.0% 86.0% 82.0%
86.0% 83.0% 79.0%
83.0% 80.0% 75.0%
79.0% 76.0% 72.0%

Technical Data

45 50
90.0%
86.6%
83.3%
79.9%
76.5%
45 50
81.0%
77.0%
74.0%
71.0%
68.0%
12-3