oscillations to such an extent that no premature zero crossings of the voltage on the thyristor
occur after the thyristor has been switched off.
3.5.3
Duty cycle (option C61)
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
Power of the starting frequency
converter (SFC)
Load cycle
% of the SFC nominal power or
current at U
g
< U
n
-SFC
Operating time (min)
Ventilation
70
0
Pause
0
0
1. Normal start
100
4
Pause
0
2.5
Ventilation
70
0
Pause
0
0
2. Normal start
100
4
Pause
0
2.5
Ventilation
70
0
Pause
0
0
3. Normal start
100
4
Pause
0
2.5
Ventilation
70
0
Pause
0
0
4. Normal start
100
4
Non-operational period
0
120
It can be derived from the load cycles that the starting frequency converter is not dimensioned
for continuous operation at nominal power.
3.5.4
Black start (option E05)
This software option is required when starting with an auxiliary diesel so that starting is possible
with a reduction in the power drawn from the starting converter. If necessary, you must
parameterize limits and times deviating from the standard.
Description
3.5 Options
SINAMICS GL150 6SL38502UM114PA0Z
40
Operating Instructions Rev.201910281441 EXAMPLE
