Operating point adjustment – Basler Electric CBS 212A User Manual
Page 20
14
9270700990 Rev F
Operating Point Adjustment
Set the Operating Point Adjustment control at the level of generator voltage where the CBS 212A
provides current boost to the exciter field. Performing this procedure with the generator unloaded is the
preferred method for adjusting the operating voltage level. If the generator load cannot be removed,
perform the steps listed under Loaded Generator.
Unloaded Generator
1.
Rotate the Operating Point Adjustment control fully clockwise.
2.
Remove all loads from the generator output.
3.
Start the generator and bring it up to rated speed.
4.
Lower the generator output voltage to the level where current boost is desired.
5.
Slowly adjust the Operating Point Adjustment control counterclockwise until the Operating Point
Indication LED turns off (current boost is initiated).
6.
Slowly increase the generator output voltage until the Operating Point Indication LED lights
(current boost is terminated).
7.
Verify that the current-boost pickup and dropout levels are such that generator output voltage
oscillations will not occur.
Loaded Generator
1.
De-energize the generator field and connect a jumper wire (10 AWG) across terminals TB1-1 and
2.
2.
Perform Steps 3 through 7 of the Unloaded Generator sub-section.
3.
Remove the jumper wire from terminals TB1-1 and 2 when calibration is complete.
Installation
CBS 212A