SIEMENS
SINAMICS G180
Configuring instructions
Characteristic curves
5/6
Siemens D 18.1 · 2014
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Overview
(continued)
Derating for liquid-cooled converters with coolant inlet temperature of max. 28 °C
Derating for liquid-cooled converters with coolant inlet temperature of max. 30 °C
Derating for liquid-cooled converters with coolant inlet temperature of max. 35 °C
The compact units are designed according to minimum air clearances at up to 2000 m above sea level, and the cabinet units
according to minimum air clearances at up to 3000 m above sea level, i.e. voltage derating is not required for compact units at
altitudes of 2000 m or below or for cabinet units at altitudes of 3000 m or below.
Since the air clearances in the converter cannot be changed, this factor must be taken into account in the voltage derating
calculation.
V
max
is the reference value for voltage derating.
Voltage derating factor
Installation altitude
above sea level
Current derating factor (as a % of the rated current) for a coolant inlet temperature of 28 °C
m
18 °C
23 °C
28 °C
33 °C
38 °C
0 ... 1000
84.0 %
64.2 %
1001 ... 1500
100 %
94.4 %
79.3 %
60.6 %
1501 ... 2000
88.9 %
74.7 %
57.0 %
2001 ... 2500
94.8 %
83.3 %
70.0 %
53.5 %
2501 ... 3000
98.0 %
88.5 %
77.8 %
65.3 %
49.9 %
3001 ... 3500
1)
92.4 %
83.4 %
73.3 %
61.6 %
47.1 %
3501 ... 4000
1)
86.8 %
78.4 %
68.9 %
57.9 %
44.2 %
4001 ... 4500
1)
81.2 %
73.3 %
64.4 %
54.1 %
41.4 %
4501 ... 5000
1)
75.6 %
68.3 %
60.0 %
50.4 %
38.5 %
Installation altitude
above sea level
Current derating factor (as a % of the rated current) for a coolant inlet temperature of 30 °C
m
20 °C
25 °C
30 °C
35 °C
40 °C
0 ... 1000
81.6 %
57.7 %
1001 ... 1500
100 %
94.4 %
77.1 %
54.5 %
1501 ... 2000
88.9 %
72.6 %
51.3 %
2001 ... 2500
96.2 %
83.3 %
68.0 %
48.1 %
2501 ... 3000
89.8 %
77.8 %
63.5 %
44.9 %
3001 ... 3500
1)
94.7 %
84.7 %
73.3 %
59.9 %
42.3 %
3501 ... 4000
1)
88.9 %
79.5 %
68.9 %
56.2 %
39.8 %
4001 ... 4500
1)
83.2 %
74.4 %
64.4 %
52.6 %
37.2 %
4501 ... 5000
1)
77.5 %
69.3 %
60.0 %
49.0 %
34.6 %
Installation altitude
above sea level
Current derating factor (as a % of the rated current) for a coolant inlet temperature of 35 °C
m
25 °C
30 °C
35 °C
40 °C
0 ... 1000
70.7 %
1001 ... 1500
100 %
94.4 %
66.8 %
1501 ... 2000
88.9 %
62.9 %
2001 ... 2500
83.3 %
58.9 %
2501 ... 3000
95.3 %
77.8 %
55.0 %
3001 ... 3500
1)
89.8 %
73.3 %
51.9 %
3501 ... 4000
1)
97.4 %
84.4 %
68.9 %
48.7 %
4001 ... 4500
1)
91.1 %
78.9 %
64.4 %
45.6 %
4501 ... 5000
1)
84.9 %
73.5 %
60.0 %
42.4 %
Installation altitude
above sea level
For compact units and cabinet systems:
Voltage derating factor (in % of line voltage)
For cabinet units:
Voltage derating factor (in % of line voltage)
m
• For 400 V units
➠
V
max
= 500 V
• For 500 V units
➠
V
max
= 500 V
• For 690 V units
➠
V
max
= 690 V
• For 400 V units
➠
V
max
= 415 V
• For 500 V units
➠
V
max
= 500 V
• For 690 V units
➠
V
max
= 690 V
0 ... 2000
100 %
2001 ... 2500
93.4 %
2501 ... 3000
87.7 %
3001 ... 3500
81.9 %
93.9 %
3501 ... 4000
77.5 %
88.5 %
4001 ... 4500
71.9 %
82.4 %
4501 ... 5000
67.6 %
77.0 %
1)
Voltage derating (see voltage derating factor) is also required for cabinet
units at an installation altitude of > 3000 m.
© Siemens AG 2014