5-82
C60 Breaker Protection System
GE Multilin
5.4 SYSTEM SETUP
5 SETTINGS
5
5.4.6 FLEXCURVES™
a) SETTINGS
PATH: SETTINGS
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SYSTEM SETUP
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FLEXCURVES
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FLEXCURVE A(D)
FlexCurves™ A through D have settings for entering times to reset and operate at the following pickup levels: 0.00 to 0.98
and 1.03 to 20.00. This data is converted into two continuous curves by linear interpolation between data points. To enter a
custom FlexCurve™, enter the reset and operate times (using the VALUE keys) for each selected pickup point (using the
MESSAGE UP/DOWN keys) for the desired protection curve (A, B, C, or D).
The relay using a given FlexCurve™ applies linear approximation for times between the user-entered
points. Special care must be applied when setting the two points that are close to the multiple of pickup of
1; that is, 0.98 pu and 1.03 pu. It is recommended to set the two times to a similar value; otherwise, the lin-
ear approximation may result in undesired behavior for the operating quantity that is close to 1.00 pu.
FLEXCURVE A
FLEXCURVE A TIME AT
0.00 xPKP:
0 ms
Range: 0 to 65535 ms in steps of 1
Table 5–6: FLEXCURVE™ TABLE
RESET
TIME
MS
RESET
TIME
MS
OPERATE
TIME
MS
OPERATE
TIME
MS
OPERATE
TIME
MS
OPERATE
TIME
MS
0.00
0.68
1.03
2.9
4.9
10.5
0.05
0.70
1.05
3.0
5.0
11.0
0.10
0.72
1.1
3.1
5.1
11.5
0.15
0.74
1.2
3.2
5.2
12.0
0.20
0.76
1.3
3.3
5.3
12.5
0.25
0.78
1.4
3.4
5.4
13.0
0.30
0.80
1.5
3.5
5.5
13.5
0.35
0.82
1.6
3.6
5.6
14.0
0.40
0.84
1.7
3.7
5.7
14.5
0.45
0.86
1.8
3.8
5.8
15.0
0.48
0.88
1.9
3.9
5.9
15.5
0.50
0.90
2.0
4.0
6.0
16.0
0.52
0.91
2.1
4.1
6.5
16.5
0.54
0.92
2.2
4.2
7.0
17.0
0.56
0.93
2.3
4.3
7.5
17.5
0.58
0.94
2.4
4.4
8.0
18.0
0.60
0.95
2.5
4.5
8.5
18.5
0.62
0.96
2.6
4.6
9.0
19.0
0.64
0.97
2.7
4.7
9.5
19.5
0.66
0.98
2.8
4.8
10.0
20.0
NOTE
Summary of Contents for C60
Page 2: ......
Page 4: ......
Page 11: ...GE Multilin C60 Breaker Protection System xi TABLE OF CONTENTS INDEX ...
Page 12: ...xii C60 Breaker Protection System GE Multilin TABLE OF CONTENTS ...
Page 32: ...1 20 C60 Breaker Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 50: ...2 18 C60 Breaker Protection System GE Multilin 2 2 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Page 128: ...4 30 C60 Breaker Protection System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Page 394: ...9 4 C60 Breaker Protection System GE Multilin 9 1 FAULT LOCATOR 9 THEORY OF OPERATION 9 ...
Page 516: ...D 10 C60 Breaker Protection System GE Multilin D 1 OVERVIEW APPENDIXD D ...
Page 528: ...E 12 C60 Breaker Protection System GE Multilin E 2 DNP POINT LISTS APPENDIXE E ...