GE 850 - Page 364

6–96 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
VOLTAGE ELEMENTS CHAPTER 6: PROTECTION SETPOINTS
Figure 6-43: Generated curves with unsorted and sorted points
Point A is used for Operation time Points
A B
Point Time Limit
1 0 0
2 150 0
3 150 0.3
4 600 0.3
5 800 0.1
6 1500 0.9
7,8,9,10 2000 1
In this case, there are two
operating points for the same
voltage level. The point with
lower time (point A in this case)
will be used for operation.
Points sorted by Time Points
12
3
4
5
6
7
7
8
8
9
9
10
#
Original Points
New Points
#
1 2
3
4
6
5
6
7
7
8
8
9
9
10
Point Time Limit
1 600 0.3
2 150 0.3
3 150 0
4 0 0
5 1500 0.9
6 600 0.5
7,8,9,10 2000 1
In this case, the points are not
sorted. Upon saving the
settings, the points will get
sorted by time to generate the
curve.