Flexcurves - GE b30 Instruction Manual

SYSTEM SETUP
The switch element has direct hard-coded connections to the IEC 61850 model as shown in the logic diagram. This allows
remote open/close operation of each switch, using either CSWI or XSWI IEC 61850 logical nodes. IEC 61850 select-before-
operate functionality, local/remote switch functionality, along with blocking open/close commands are provided. Note that
the dwell time for the IEC 61850 trip and close commands shown is one protection pass only. To maintain close/open
command for a certain time, do so either on the contact outputs using the "Seal-in" setting or in FlexLogic.

5.5.6 FlexCurves

5.5.6.1 Settings
SETTINGS  SYSTEM SETUP  FLEXCURVES  FLEXCURE A(D)
 FLEXCURVE A

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
up/down keys) for the required protection curve (A, B, C, or D).
MESSAGE
5
Table 5-17: FlexCurve table
Reset Time
ms
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.48
0.50
0.52
0.54
0.56
0.58
0.60
0.62
0.64
0.66
5-138
FLEXCURVE A TIME AT

0.00 xPKP:
FLEXCURVE A TIME AT

0.05 xPKP:
FLEXCURVE A TIME AT

20.00xPKP:
Reset Time Operate
ms
0.68 1.03
0.70 1.05
0.72 1.1
0.74 1.2
0.76 1.3
0.78 1.4
0.80 1.5
0.82 1.6
0.84 1.7
0.86 1.8
0.88 1.9
0.90 2.0
0.91 2.1
0.92 2.2
0.93 2.3
0.94 2.4
0.95 2.5
0.96 2.6
0.97 2.7
0.98 2.8
Range: 0 to 65535 ms in steps of 1
0 ms
Range: 0 to 65535 ms in steps of 1
0 ms

Range: 0 to 65535 ms in steps of 1
0 ms
keys) for each selected pickup point (using the
VALUE
Time Operate Time
ms ms
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
Operate Time Operate
ms
4.9 10.5
5.0 11.0
5.1 11.5
5.2 12.0
5.3 12.5
5.4 13.0
5.5 13.5
5.6 14.0
5.7 14.5
5.8 15.0
5.9 15.5
6.0 16.0
6.5 16.5
7.0 17.0
7.5 17.5
8.0 18.0
8.5 18.5
9.0 19.0
9.5 19.5
10.0 20.0
Time
ms