Scada
130
5.8.5 SYNC
NOTE: These settings are not stored in the module configuration. They are stored in a different
memory area and not transferred with the configuration. The Clone Module feature transfers both the
configuration AND the settings of the Multiset, Governor/AVR interface and the Sync page.
Slip frequency The difference between generator frequency and the bus/mains frequency.
The 8810 controller will adjust engine speed until the frequency difference
matches the slip frequency. The phase of the supplies will then drift in and out of
synchronism at a rate of 1/slip-frequency times per second.
I.e. for Slip frequency of 0.2Hz, the supplies will be in phase once every five
seconds.
Pulse rate
(Not applicable when using internal analogue control system)
The number of raise/lower changes per second of the raise / lower relay outputs.
Pulse length
(Not applicable when using Internal analogue control system)
The lengths of raise/lower pulses of the raise / lower relay outputs.
Gain / Stability
(Not applicable when using external relays control system)
In general, lower setting results in a slow frequency matching process, but too
high a setting may cause instability (hunting). If this occurs, lower the stability
setting. If this has no effect, lower the gain setting.
Control loop settings for frequency synchroniser
Control loop settings for voltage matching
Control loop settings for kW load control
Control loop settings for kVAr load control
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