GE BUS1000, Instructions Manual

Page: 32 / 129

5. HARDWARE DESCRIPTION
5-8 BUS1000 Busbar Protection GEK-98514B
5.3.6. INTERNAL ADJUSTMENTS
Percent slope adjustment (FIG. 12)
It is placed in the differential board (DDF) and it is achieved by means of a Cambion jumper. The range
values are: 0.5, 0.6, 0.7, and 0.8
Differential overcurrent supervision adjustment (FIG. 12)
It is placed in the differential board (DDF) and it is achieved by means of a Cambion jumper. The range
values are: 0.2, 0.3, 0.5, 0.8, 1.0, 1.5 and 2.
Alarm operation time adjustment (FIG. 13)
It is placed in the alarm board (DAL) and it is achieved by means of the P1 potentiometer. It is adjusted at 10
s.
Failure pickup command seal in adjustment (fig. 14)
It is placed in the breaker failure board (SFI) and it is done by means of a jumper.
5.3.7. FACTORY ADJUSTMENTS
DDF board (FIG. 12)
•
P1 potentiometer: Differential unit operation level adjustment.
•
P2 potentiometer: Differential unit operation time adjustment.
•
P3 potentiometer: Differential unit recovering time adjustment.
•
P4 potentiometer: Supervision unit operation level adjustment.
•
P5 potentiometer: Supervision unit operation time adjustment.
•
P6 potentiometer: Supervision unit fill-in time adjustment
DAL board (FIG. 13)
P1 potentiometer: Alarm unit recovering time adjustment.
SFI board (FIG. 14)
•
P1 potentiometer: Breaker failure operation level adjustment.
•
P2 potentiometer: Overcurrent unit operation level adjustment.
•
P3 potentiometer: Overcurrent unit fill-in time adjustment.
•
P4 potentiometer: Breaker failure unit fill-in time adjustment.
•
P5 potentiometer: Overcurrent unit operation time adjustment
NOTE : The potentiometers described above are factory adjusted and it is not recommended to change their
original adjustment positions.