Siemens S120 - Page 176

Power Modules
4.4 Power Modules Chassis
AC Drive
176 Manual, (GH6), 04/2014, 6SL3097-4AL00-0BP4
Derating for Chassis Power Modules
For further information, see Section Derating as a function of the ambient temperature, pulse
frequency, and installation altitude (Page 37).
Table 4- 39 Current derating for chassis units as a function of ambient temperature (supply air temperature at the air inlet
of the chassis unit) and installation altitude
Installation altitude
above sea level in m
Current derating factor (in % of rated current)
at an ambient temperature (air intake temperature) of
20° C
25° C
30° C
35° C
40° C
45° C
50° C
55° C
0 ... 2000
100 %
100 %
100 %
100 %
100 %
93,3 %
86,7 %
80 %
... 2500
100 %
100 %
100 %
100 %
96,3 %
... 3000
100 %
100 %
100 %
98,7 %
... 3500
100 %
100 %
100 %
... 4000
100 %
100 %
96,3 %
... 4500
100 %
97,5 %
... 5000
98,2 %
The values apply under the precondition that a cooling air flow though the units as stated in
the technical data is ensured.
Table 4- 40 Derating factor of the output current as a function of the pulse frequency
Order No. 6SL3310-...
Power [kW]
Output current for a
pulse frequency of 2 kHz
[A]
Derating factor for a
pulse frequency of 4 kHz
Derating factor for a
pulse frequency of 8 kHz
1TE32-1AAx
110
210
82 %
50 %
1TE32-6AAx
132
260
83 %
50 %
1TE33-1AAx
160
310
88 %
50 %
1TE33-8AAx
200
380
87 %
50 %
1TE35-0AAx
250
490
78 %
50 %
By multiplying the rated pulse frequency with a multiple integer, the following output
frequencies can be achieved taking into account the derating factors:
Table 4- 41 Maximum output frequencies achieved by increasing the pulse frequency in VECTOR
mode
Pulse frequency [kHz]
Maximum output frequency [Hz]
2
160
4
320
1)
8
640
1)
1)
The maximum output frequency is limited to 300 Hz due to the closed-loop control (see SINAMICS
S120/S150 List Manual.)