Siemens SIMOVERT MASTERDRIVES Betriebsanleitung Seite 265

Technical Data
NOTE
Derating curves
Permissible rated current in %
100
75
50
25
0
0 2
Permissible rated current in %
100
90
80
70
60
0 1000
Permissible rated current in %
100
75
50
25
0
0 10
Coolant temperature in °C
11-2
Complete fulfillment of the degree of
protection IP20 in accordance with
EN 60529 is dependent on how many
incoming and outgoing control cables
cover the opening area on the lower
section of the unit. If degree of
protection IP20 also has to be met in
operation, the opening may have to be
subsequently reduced.
4 6 8 10
Pulse frequency in kHz
2000 3000
Installation altitude above sea level in m
20 30 40 50
Fig. 11-1 Derating curves
Permissible rated input voltage in %
according to VDE 0110 / IEC 664-1
(not necessary acc. to UL / CSA)
100
75
50
0 1000
Installation altitude above sea level in m
<1>
The more favourable derating curve is only applicable
for units of sizes B to D with a rated input voltage of
510 V - 540 V
Altitude
[m]
1000
2000
3000
4000
4000
Temp
[°C]
50
45
40
35
30
25
Operating Instructions
08.2009
<1>
2000 3000 4000
Derating
factor K
1
1.0
0.9
0.845
0.8
Derating
factor K
2
0.76
0.879
1.0
1.125 *
* See
1.25 *
following
note
1.375 *
6SE7087-6KD50 Siemens AG
SIMOVERT MASTERDRIVES