The "cool down turning" operating mode is provided to cool the gas turbines down quickly after
operation.
Operating mode
Power of the starting frequen‐
cy converter (SFC)
Operating time (min)
% of the SFC nominal power or
current at U
g
< U
n
-SFC
at 45 °C
Ventilation
70
20
Pause
0
1
1. Normal start
100
4
Pause
0
2.5
Ventilation
70
20
Pause
0
1
2. Normal start
100
4
Pause
0
2.5
Ventilation
70
20
Pause
0
1
3. Normal start
100
4
Pause
0
2.5
Ventilation
70
20
Pause
0
1
4. Normal start
100
4
Non-operational period
0
120
Cool down turning
1.5
10 h
It can be derived from the load cycles that the starting frequency converter is not dimensioned
for continuous operation at nominal power.
3.5.30
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.
3.5.31
Phase shifter start (option E07)
The generator that is decoupled from the gas turbine is accelerated to a speed slightly above the
synchronous speed via the starting converter. The starting converter is switched off
automatically once the speed setpoint is reached. The speed setpoint is approx. 10% above the
synchronous speed.
After the starting converter has been disconnected, the generator is excited to the rated voltage
and is synchronized with the line at a synchronous speed during runout. Once the generator has
been successfully synchronized with the line, positive or negative reactive power is generated
with the static excitation equipment.
Description
3.5 Options
3rd Party LCI Control Upgrade
Operating Instructions, 02/2022, A5E31872818
49
