ComAp IG-NT, Installation Manual

Page: 114 / 149

IGS-NT Installation Guide
114
17. Speed governor and AVR
general settings
17.1. Sync/load control adjustment
Hint:
Use isochronous speed governor.
Two wire shielded connection from IGS-NT SPEED GOVERNOR output (SG OUT, SG
COM) to Speed governor auxiliary input is recommended.
A full range change of the IGS-NT speed governor output (from SpeedGovLowLim to
SpeedGovHiLim ) should cause 5-10% change of the engine speed ( SpeedGovLowLim ~
95% RPM
nom
, Speed gov bias ~ 100% RPM
nom
, SpeedGovHiLim ~ 105% RPM
nom.
IMPORTANT
Speed governor has to be adjusted for optimum performance before Sync / load
control adjusting.
Check generator phase sequence before the first GCB connection.
Before optimal sync/load control settings are adjusted, please disconnect GCB
OPEN/CLOSE output or set Phase window = 0 to avoid paralleling when adjusting
settings.
17.1.1. Speed governor output characteristics
RPM RPM
Volt [V] Volt [V]
0 V
+10 V - 10 V
Speed governor
voltage output
1500 0 V
- 10 V
1500
+10 V
Speed governor
voltage output
+ 5 % of nominal + 5 % of nominal
- 5 % of nominal - 5 % of nominal
SpeedRegChar = POSITIVE SpeedRegChar = NEGATIVE
17.1.2. Synchronizer adjustment
1) Start the engine in MAN Mode.