Table of Contents
Advertisement
5.9 TIME OVERCURRENT CURVES
Table 5–11: ANSI CURVE TRIP TIMES (IN SECONDS)
MULTIPLIER
M
1.5
ANSI EXTREMELY INVERSE
0.5
2.000
1.0
4.001
2.0
8.002
4.0
16.004
6.0
24.005
8.0
32.007
10.0
40.009
ANSI VERY INVERSE
0.5
1.567
1.0
3.134
2.0
6.268
5
4.0
12.537
6.0
18.805
8.0
25.073
10.0
31.341
ANSI NORMALLY INVERSE
0.5
2.142
1.0
4.284
2.0
8.568
4.0
17.137
6.0
25.705
8.0
34.274
10.0
42.842
ANSI MODERATELY INVERSE
0.5
0.675
1.0
1.351
2.0
2.702
4.0
5.404
6.0
8.106
8.0
10.807
10.0
13.509
5-92
2.0
3.0
4.0
0.872
0.330
0.184
1.744
0.659
0.368
3.489
1.319
0.736
6.977
2.638
1.472
10.466
3.956
2.208
13.955
5.275
2.944
17.443
6.594
3.680
0.663
0.268
0.171
1.325
0.537
0.341
2.650
1.074
0.682
5.301
2.148
1.365
7.951
3.221
2.047
10.602
4.295
2.730
13.252
5.369
3.412
0.883
0.377
0.256
1.766
0.754
0.513
3.531
1.508
1.025
7.062
3.016
2.051
10.594
4.524
3.076
14.125
6.031
4.102
17.656
7.539
5.127
0.379
0.239
0.191
0.757
0.478
0.382
1.515
0.955
0.764
3.030
1.910
1.527
4.544
2.866
2.291
6.059
3.821
3.054
7.574
4.776
3.818
745 Transformer Management Relay
CURRENT
I / I
pkp
5.0
6.0
7.0
0.124
0.093
0.075
0.247
0.185
0.149
0.495
0.371
0.298
0.990
0.742
0.596
1.484
1.113
0.894
1.979
1.483
1.192
2.474
1.854
1.491
0.130
0.108
0.094
0.260
0.216
0.189
0.520
0.432
0.378
1.040
0.864
0.755
1.559
1.297
1.133
2.079
1.729
1.510
2.599
2.161
1.888
0.203
0.172
0.151
0.407
0.344
0.302
0.814
0.689
0.604
1.627
1.378
1.208
2.441
2.067
1.812
3.254
2.756
2.415
4.068
3.445
3.019
0.166
0.151
0.141
0.332
0.302
0.281
0.665
0.604
0.563
1.329
1.208
1.126
1.994
1.812
1.689
2.659
2.416
2.252
3.324
3.020
2.815
5 SETPOINTS
8.0
9.0
10.0
0.063
0.055
0.049
0.126
0.110
0.098
0.251
0.219
0.196
0.503
0.439
0.393
0.754
0.658
0.589
1.006
0.878
0.786
1.257
1.097
0.982
0.085
0.078
0.073
0.170
0.156
0.146
0.340
0.312
0.291
0.680
0.625
0.583
1.020
0.937
0.874
1.360
1.250
1.165
1.700
1.562
1.457
0.135
0.123
0.113
0.270
0.246
0.226
0.541
0.492
0.452
1.082
0.983
0.904
1.622
1.475
1.356
2.163
1.967
1.808
2.704
2.458
2.260
0.133
0.128
0.123
0.267
0.255
0.247
0.533
0.511
0.493
1.066
1.021
0.986
1.600
1.532
1.479
2.133
2.043
1.972
2.666
2.554
2.465
GE Power Management
Advertisement
Table of Contents
