GE B30 Instruction Manual page 279
Ur series bus differential system protection relay
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- Instruction manual (633 pages) ,
- Communications manual (532 pages) ,
- Technical reference manual (252 pages)
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5 SETTINGS
Table 5–20: IEEE CURVE TRIP TIMES (IN SECONDS)
MULTIPLIER
(TDM)
1.5
2.0
10.0
226.817
95.217
IEEE VERY INVERSE
0.5
8.090
3.514
1.0
16.179
7.028
2.0
32.358
14.055
4.0
64.716
28.111
6.0
97.074
42.166
8.0
129.432
56.221
10.0
161.790
70.277
IEEE MODERATELY INVERSE
0.5
3.220
1.902
1.0
6.439
3.803
2.0
12.878
7.606
4.0
25.756
15.213
6.0
38.634
22.819
8.0
51.512
30.426
10.0
64.390
38.032
GE Multilin
CURRENT ( I / I
3.0
4.0
5.0
36.467
20.017
12.967
1.471
0.899
0.654
2.942
1.798
1.308
5.885
3.597
2.616
11.769
7.193
5.232
17.654
10.790
7.849
23.538
14.387
10.465
29.423
17.983
13.081
1.216
0.973
0.844
2.432
1.946
1.688
4.864
3.892
3.377
9.729
7.783
6.753
14.593
11.675
10.130
19.458
15.567
13.507
24.322
19.458
16.883
B30 Bus Differential System
5.6 GROUPED ELEMENTS
)
pickup
6.0
7.0
8.0
9.274
7.092
5.693
0.526
0.450
0.401
1.051
0.900
0.802
2.103
1.799
1.605
4.205
3.598
3.209
6.308
5.397
4.814
8.410
7.196
6.418
10.513
8.995
8.023
0.763
0.706
0.663
1.526
1.412
1.327
3.051
2.823
2.653
6.102
5.647
5.307
9.153
8.470
7.960
12.204
11.294
10.614
15.255
14.117
13.267
9.0
10.0
4.742
4.065
0.368
0.345
0.736
0.689
1.472
1.378
2.945
2.756
4.417
4.134
5.889
5.513
7.361
6.891
0.630
0.603
1.260
1.207
2.521
2.414
5.041
4.827
7.562
7.241
10.083
9.654
12.604
12.068
5
5-145
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