GE D30 Instruction Manual page 318

GROUPED ELEMENTS
K, E = constants defined in the table
t = characteristic constant defined in the table
r
T = reset time in seconds (assuming energy capacity is 100% and
RESET
Table 5-23: IEC (BS) inverse time curve constants
IEC (BS) curve shape
IEC Curve A (BS142)
IEC Curve B (BS142)
IEC Curve C (BS142)
IEC Short Inverse
Table 5-24: IEC curve trip times (in seconds)
Multiplier Current ( I / I
(TDM)
1.5
IEC Curve A
0.05 0.860
0.10 1.719
0.20 3.439
0.40 6.878
0.60 10.317
0.80 13.755
1.00 17.194
5
IEC Curve B
0.05 1.350
0.10 2.700
0.20 5.400
0.40 10.800
0.60 16.200
0.80 21.600
1.00 27.000
IEC Curve C
0.05 3.200
0.10 6.400
0.20 12.800
0.40 25.600
0.60 38.400
0.80 51.200
1.00 64.000
IEC Short Inverse
0.05 0.153
0.10 0.306
0.20 0.612
0.40 1.223
0.60 1.835
0.80 2.446
1.00 3.058
5-186
K E
0.140 0.020
13.500 1.000
80.000 2.000
0.050 0.040
)
pickup
2.0 3.0 4.0
0.501 0.315 0.249
1.003 0.630 0.498
2.006 1.260 0.996
4.012 2.521 1.992
6.017 3.781 2.988
8.023 5.042 3.984
10.029 6.302 4.980
0.675 0.338 0.225
1.350 0.675 0.450
2.700 1.350 0.900
5.400 2.700 1.800
8.100 4.050 2.700
10.800 5.400 3.600
13.500 6.750 4.500
1.333 0.500 0.267
2.667 1.000 0.533
5.333 2.000 1.067
10.667 4.000 2.133
16.000 6.000 3.200
21.333 8.000 4.267
26.667 10.000 5.333
0.089 0.056 0.044
0.178 0.111 0.088
0.356 0.223 0.175
0.711 0.445 0.351
1.067 0.668 0.526
1.423 0.890 0.702
1.778 1.113 0.877
is "Timed")
RESET
t
r
9.7
43.2
58.2
0.500
5.0 6.0 7.0
0.214 0.192 0.176
0.428 0.384 0.353
0.856 0.767 0.706
1.712 1.535 1.411
2.568 2.302 2.117
3.424 3.070 2.822
4.280 3.837 3.528
0.169 0.135 0.113
0.338 0.270 0.225
0.675 0.540 0.450
1.350 1.080 0.900
2.025 1.620 1.350
2.700 2.160 1.800
3.375 2.700 2.250
0.167 0.114 0.083
0.333 0.229 0.167
0.667 0.457 0.333
1.333 0.914 0.667
2.000 1.371 1.000
2.667 1.829 1.333
3.333 2.286 1.667
0.038 0.034 0.031
0.075 0.067 0.062
0.150 0.135 0.124
0.301 0.269 0.247
0.451 0.404 0.371
0.602 0.538 0.494
0.752 0.673 0.618
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
8.0 9.0 10.0
0.165 0.156 0.149
0.330 0.312 0.297
0.659 0.623 0.594
1.319 1.247 1.188
1.978 1.870 1.782
2.637 2.493 2.376
3.297 3.116 2.971
0.096 0.084 0.075
0.193 0.169 0.150
0.386 0.338 0.300
0.771 0.675 0.600
1.157 1.013 0.900
1.543 1.350 1.200
1.929 1.688 1.500
0.063 0.050 0.040
0.127 0.100 0.081
0.254 0.200 0.162
0.508 0.400 0.323
0.762 0.600 0.485
1.016 0.800 0.646
1.270 1.000 0.808
0.029 0.027 0.026
0.058 0.054 0.052
0.115 0.109 0.104
0.231 0.218 0.207
0.346 0.327 0.311
0.461 0.435 0.415
0.576 0.544 0.518