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Multiplier
(TDM)
1.5
IAC Extremely Inverse
0.5
1.699
1.0
3.398
2.0
6.796
4.0
13.591
6.0
20.387
8.0
27.183
10.0
33.979
IAC Very Inverse
0.5
1.451
1.0
2.901
2.0
5.802
4.0
11.605
6.0
17.407
8.0
23.209
10.0
29.012
IAC Inverse
0.5
0.578
1.0
1.155
2.0
2.310
4.0
4.621
6.0
6.931
8.0
9.242
10.0
11.552
IAC Inverse Long
0.5
6.498
1.0
12.997
2.0
25.993
4.0
51.987
6.0
77.980
8.0
103.974
10.0
129.967
IAC Inverse Short
0.5
0.073
1.0
0.147
2.0
0.294
4.0
0.588
6.0
0.882
8.0
1.176
10.0
1.470
12-14
ANNEX 2 TIME CURRENT CURVES FOR 51P AND 51N UNITS
Table A2-3: IAC CURVE TRIP TIMES
2.0
3.0
4.0
0.749
0.303
0.178
1.498
0.606
0.356
2.997
1.212
0.711
5.993
2.423
1.422
8.990
3.635
2.133
11.987
4.846
2.844
14.983
6.058
3.555
0.656
0.269
0.172
1.312
0.537
0.343
2.624
1.075
0.687
5.248
2.150
1.374
7.872
3.225
2.061
10.497
4.299
2.747
13.121
5.374
3.434
0.375
0.266
0.221
0.749
0.532
0.443
1.499
1.064
0.885
2.997
2.128
1.770
4.496
3.192
2.656
5.995
4.256
3.541
7.494
5.320
4.426
3.813
2.484
1.974
7.625
4.968
3.949
15.250
9.936
7.898
30.501
19.871
15.795
45.751
29.807
23.693
61.001
39.743
31.590
76.252
49.678
39.488
0.048
0.035
0.030
0.097
0.069
0.060
0.193
0.138
0.121
0.386
0.277
0.242
0.579
0.415
0.363
0.773
0.553
0.484
0.966
0.692
0.605
MIF Digital Feeder Protection
CURRENT (I/I
)
pickup
5.0
6.0
7.0
0.123
0.093
0.074
0.246
0.186
0.149
0.491
0.372
0.298
0.983
0.744
0.595
1.474
1.115
0.893
1.966
1.487
1.191
2.457
1.859
1.488
0.133
0.113
0.101
0.266
0.227
0.202
0.533
0.453
0.405
1.065
0.906
0.810
1.598
1.359
1.215
2.131
1.813
1.620
2.663
2.266
2.025
0.196
0.180
0.168
0.392
0.360
0.337
0.784
0.719
0.674
1.569
1.439
1.348
2.353
2.158
2.022
3.138
2.878
2.695
3.922
3.597
3.369
1.668
1.455
1.297
3.336
2.910
2.593
6.671
5.820
5.187
13.342
11.639
10.373
20.014
17.459
15.560
26.685
23.279
20.746
33.356
29.098
25.933
0.028
0.027
0.026
0.056
0.054
0.052
0.113
0.108
0.104
0.225
0.215
0.209
0.338
0.323
0.313
0.450
0.430
0.417
0.563
0.538
0.522
8.0
9.0
10.0
0.062
0.053
0.046
0.124
0.106
0.093
0.248
0.212
0.185
0.495
0.424
0.370
0.743
0.636
0.556
0.991
0.848
0.741
1.239
1.060
0.926
0.093
0.087
0.083
0.186
0.174
0.165
0.372
0.349
0.331
0.745
0.698
0.662
1.117
1.046
0.992
1.490
1.395
1.323
1.862
1.744
1.654
0.160
0.154
0.148
0.320
0.307
0.297
0.640
0.614
0.594
1.280
1.229
1.188
1.921
1.843
1.781
2.561
2.457
2.375
3.201
3.072
2.969
1.174
1.076
0.995
2.348
2.151
1.991
4.695
4.303
3.981
9.391
8.605
7.963
14.086
12.908
11.944
18.782
17.211
15.925
23.477
21.514
19.906
0.026
0.025
0.025
0.051
0.050
0.050
0.102
0.100
0.099
0.204
0.201
0.198
0.306
0.301
0.297
0.408
0.401
0.396
0.510
0.502
0.495
GEK-106273L
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