Deif PPM 300 - Page 157

Name Range Default Notes
Delta voltage min. 2 to 10 % of nominal
voltage
5 %
The maximum that the voltage of the synchronising generator may be
below the voltage of the busbar for the breaker to close.
Delta voltage max. 2 to 10 % of nominal
voltage
5 %
The maximum that the voltage of the synchronising generator may be
above the voltage of the busbar for the breaker to close.
Breaker close
time
40 to 300 ms 50 ms
The time between when the close breaker signal is sent and when the
breaker actually closes. This is not used for static synchronisation.
Phase window* 0.0 to 45.0 deg 5.0 deg The maximum phase angle difference allowed for synchronisation.
Minimum time in
phase window
0.1 s to 15 min 1.0 s
To close the breaker, the measurements must show that the controller
will be able to keep the phase angle difference within the phase window
for this minimum time.
*Note: These parameters are only used for static synchronisation.
Frequency window example
Busbar frequency: 50.1 Hz
Delta frequency min.: -0.1 Hz
Delta frequency max.: 0.3 Hz
The generator frequency must be between 50.0 Hz and 50.4 Hz for synchronisation.
For a SHAFT generator controller, the synchronisation settings for power take home (PTH) can be configured separately. These are
under Synchronisation setting (PTH).
More information
See SHAFT generator controller, Other SHAFT generator controller functions, Power take home (PTH) for more
information.
Static synchronisation principle
The static synchronisation principle is shown below. In the example, the frequency difference is 0.03 Hz. Phase synchronisation
regulation reduces the phase angle difference from 30 degrees to 0 degrees.
DESIGNER'S HANDBOOK 4189340911K UK Page 157 of 521