Static synchronisation types
It is possible to select between three different functions of the static synchronisation, dependent on applica-
tion requirements.
Breaker
sync.:
Normal functionality; a breaker ON pulse is activated when the requirements for synchroni-
sation are fulfilled.
Sync.
check:
This function makes the unit act solely as a check synchroniser, for example, no regulation
of frequency and/or voltage will be performed. A constant GB ON command is activated as
long as the requirements for synchronisation are fulfilled. The “GB close failure” alarm is not
active when this function is selected. This function does not require any hardware for regula-
tion.
Infinite
sync.:
The generator is kept in synchronism with the busbar, and no breaker command is used.
Settings
The following settings must be adjusted, if the static synchronisation is selected:
Setting Description Comment
2031 Maximum df The maximum allowed frequency difference between the
busbar/mains and the generator
+/- value
2032 Maximum dU The maximum allowed voltage difference between the bus-
bar/mains and the generator
+/- value, related to the
nominal generator volt-
age
2033 Closing win-
dow
The size of the window where the synchronisation pulse
can be released
+/- value
2034 Static sync. Minimum time inside the phase window before sending a
close command
2035 Static type Selection of synchronisation type See separate descrip-
tion
7.4 Synchronising controller
A dedicated controller is used whenever synchronising is activated. After a successful synchronisation, the
frequency synchronisation controller is deactivated and the relevant controller is activated, for example the
load sharing controller.
The unit provides separate settings for dynamic, static and asynchronous synchronisation which are used ac-
cording to the table below.
Sync. type/Interface type Relay Analogue/PWM
Dynamic 2050 f sync ctrl rel 2040 f sync. control
Static 2050 f sync ctrl rel
2070 Phase ctrl rel.
2040 f sync. control
2060 Phase control
Asynchronous 2090 Async. sync. 2080 RPM sync. ctrl
GPC-3 DRH 4189340587 UK Synchronisation
DEIF A/S Page 116 of 122
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