Sync/Load Ctrl - ComAp IG-NT Reference Manual

Breaker overlap is taken into account only when no Mains Import is measured and MCB can be open
immediately.
Ret fromIsland
MANUAL: Controller is automatically switched to MAN mode on each transition to Island operation
(GSB is closed). To activate the load transfer back to mains, the controller must be switched
back to AUT mode.
AUTO: Load is automatically transferred in AUT mode after Mains return.
Hint:
Select Ret fromIsland = MANUAL when it is important at what time the load is transferred back to the mains.
Force value possibility: Yes
ReturnTo mains
The setpoint influences the behavior of the TEST mode. If mains fail occurs during test (or is simulated using
Test on load function), the controller opens the MCB and switches the load to generator.
DISABLED: Now if the mains recovers, the generator stays running loaded until TEST mode is
abandoned, typically to AUT mode where reverse synchronizing and generator soft
unloading follows.
ENABLED: After the mains recovers, the generator will reverse synchronize back to the mains, unloads
and remains running without load until TEST mode is abandoned or another mains failure
occurs.
Force value possibility: Yes
Mains ret del
Delay after the mains return to the start of synchronizing of MCB (SPtM) or GCB (SPI).
Step: 1 s
Range: 0 – 3600 s
Force value possibility: Yes

Sync/Load ctrl

SpeedRegChar
Switch between speed governor characteristic.
POSITIVE: When the controller Speed governor output voltage increases – engine speed increases.
NEGATIVE: When the controller Speed governor output voltage decreases – engine speed increases.
Hint:
When set to NEGATIVE, Binary outputs Speed Up and Speed Dn still work without inversion.
Voltage window
Maximum difference between generator and mains/bus voltage.
Step: 0,1 % of GenNomV
Range: 0,0 – 100,0 % of GenNomV
Force value possibility: Yes
Hint:
See Voltage phases match indication on the controller Synchronizing screen.
Example 1.
Voltage match 1 2 3
1 1 0
Example 2.
Voltage match 1 2 3
1 1 1
GtoM AngleReq
Requested phase difference between generator and mains voltage during synchronizing. Use this setpoint
for phase correction of potential transformers connection.
Inteli NT SPtM, SW Version 2.4, ©ComAp –December 2009
IGS-NT-SPtM-2.4-Reference Guide.PDF
[ MANUAL / AUTO ]
[ DISABLED / ENABLED ]
[ s ] (FV)
[ POSITIVE / NEGATIVE ]
[ % ] (FV)
Note:
Phase L3 is out of voltage window
Note:
All phases are in voltage window
[ ° ]
(FV)
(FV)
90