IGS-NT Combi, SW Version 3.0, ©ComAp – May 2013
IGS-NT-Combi-3.0 Reference Guide.PDF
Group: Sync/Load ctrl
Setpoint: SpeedRegChar
This setpoint selects the characteristic of the speed governor output of the
controller. Adjust it according to the behavior of the remote speed input of your
speed governor:
Select this option if raising of the voltage on the governor
remote speed input causes engine speed to raise.
Select this option if raising of the voltage on the governor
remote speed input causes engine speed to lower.
Setpoint: Voltage window
This setpoint adjusts maximum difference between generator and mains/bus
voltage in respective phases for voltage matching during synchronizing.
Setpoint: GtoM AngleReq
Requested angle between the phasors of the generator and mains voltage for
synchronizing. This setpoint is intended for correction of the phase shift caused by
a delta-triangle transformer located between the generator and mains voltage
measuring points. In other situations the setpoint should be adjusted to 0.
The diagram below shows a situation where the 230V/10kV triangle-delta
transformer causes 30° phase shift between the primary and secondary side. That
means when there is 0° phase difference at the both sides of the GCB the phase
difference measured by the controller is 30°. Correct setting for this kind of wiring
is then GtoM AngleReq = 30.
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