ComAp IG-NT, Installation Manual

Page: 118 / 149

IGS-NT Installation Guide
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7) When gen-set is running unloaded increase carefully Voltage gain to unstable point
and then decrease value by 30 % to insure stable performance.
8) Adjust Voltage int (usually setting to 100% gives optimal performance).
Hint:
To judge optimal adjusting induce generator voltage jumps by AVR DCout bias change or by
Nominal voltage change.
AVRi output OCOM is a common output. GND was used instead of OCOM
17.2.3. PF control adjustment
The genset should be cca 30 % loaded in parallel to mains and baseload mode.
1) Set the same values PF gain, PF int as in voltage control loop.
2) Set Process control : #SysLdCtrl PtM = BASELOAD, #Sys BaseLoad = 30 % of
Nominal load, #SysPFCtrl PtM = BASEPF, # SysPwrFactor = 1.0.
3) Start and synchronize the gen-set in MAN Mode by pressing GCB ON/OFF
4) When running in parallel 30% loaded increase slowly PF gain to unstable point and
then decrease value by 30 % to insure stable performance.
5) Adjust PF int (usually setting to 100% gives optimal performance).
Hint:
To judge optimal adjusting induce generator power jumps by SysBaseLoad change or by
soft changes of AVR DCout bias .