Duty Cycle (Option C63) - Siemens SINAMICS MV 9LD4110-7EX70-1AA0 Operating Instructions Manual

Operating mode
Pause
Ventilation
Pause
3. Normal start
Pause
Ventilation
Pause
4. Normal start
Non-operational period
It can be derived from the load cycles that the starting frequency converter is not dimensioned
for continuous operation at nominal power.
3.5.27

Duty cycle (option C63)

The starting frequency converter is dimensioned in such a way that the specified duty cycles can
be performed. The duty cycles are possible with the described operating modes without thermal
overload at maximum ambient temperature.
The gas turbine is started in the "normal start" operating mode. The gas turbine is partly started
with upstream ventilation of the exhaust gas section and the boiler.
Operating mode
Ventilation
Pause
1. Normal start
Pause
Ventilation
Pause
2. Normal start
Pause
Ventilation
Pause
3. Normal start
Pause
Ventilation
Pause
4. Normal start
Non-operational period
3rd Party LCI Control Upgrade
Operating Instructions, 02/2022, A5E31872818
Power of the starting frequen‐
cy converter (SFC)
% of the SFC nominal power or
current at U < U -SFC
g n
0
70
0
100
0
70
0
100
0
Power of the starting frequen‐
cy converter (SFC)
% of the SFC nominal power or
current at U < U -SFC
g n
70
0
100
0
70
0
100
0
70
0
100
0
70
0
100
0
Description
3.5 Options
Operating time (min)
at 40 °C
2.5
10
1
4
2.5
10
1
4
120
Operating time (min)
at 45 °C
10
1
4
2.5
10
1
4
2.5
10
1
4
2.5
10
1
4
120
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