1BIEC 255-4 AND BS142 CURVES
0BCURVES FOR TIME CHARACTERISTICS
I.1.4. SHORT INVERSE IEC CURVE
1
I
I
A
*
M
T
α
o
operate
−
=
A = 0,05
α
= 0,04 Tr = 4,85
Theoretical values given by the equation:
M \ I/Io
0,1
0,25
0,5
0,90
1,05
1,10
1,20
1,30
1,5
2
3
5
10
20
40
0.05
0,245
0,259
0,323
1,276
1,280
0,655
0,342
0,237
0,153
0,089
0,056
0,038
0,026
0,020
0,016
0.06
0,294
0,310
0,388
1,532
1,536
0,785
0,410
0,284
0,183
0,107
0,067
0,045
0,031
0,024
0,019
0.07
0,343
0,362
0,453
1,787
1,792
0,916
0,478
0,332
0,214
0,124
0,078
0,053
0,036
0,027
0,022
0.08
0,392
0,414
0,517
2,042
2,048
1,047
0,546
0,379
0,245
0,142
0,089
0,060
0,041
0,031
0,025
0.09
0,441
0,466
0,582
2,297
2,304
1,178
0,615
0,427
0,275
0,160
0,100
0,068
0,047
0,035
0,028
0.10
0,490
0,517
0,647
2,553
2,559
1,309
0,683
0,474
0,306
0,178
0,111
0,075
0,052
0,039
0,031
0.11
0,539
0,569
0,711
2,808
2,815
1,440
0,751
0,521
0,336
0,196
0,122
0,083
0,057
0,043
0,035
0.12
0,588
0,621
0,776
3,063
3,071
1,571
0,820
0,569
0,367
0,213
0,134
0,090
0,062
0,047
0,038
0.13
0,637
0,673
0,841
3,318
3,327
1,702
0,888
0,616
0,398
0,231
0,145
0,098
0,067
0,051
0,041
0.14
0,686
0,724
0,905
3,574
3,583
1,833
0,956
0,664
0,428
0,249
0,156
0,105
0,073
0,055
0,044
0.15
0,735
0,776
0,970
3,829
3,839
1,964
1,025
0,711
0,459
0,267
0,167
0,113
0,078
0,059
0,047
0.16
0,784
0,828
1,035
4,084
4,095
2,094
1,093
0,758
0,489
0,285
0,178
0,120
0,083
0,063
0,050
0.17
0,833
0,879
1,099
4,339
4,351
2,225
1,161
0,806
0,520
0,302
0,189
0,128
0,088
0,067
0,053
0.18
0,882
0,931
1,164
4,595
4,607
2,356
1,230
0,853
0,550
0,320
0,200
0,135
0,093
0,071
0,057
0.19
0,931
0,983
1,229
4,850
4,863
2,487
1,298
0,900
0,581
0,338
0,211
0,143
0,098
0,075
0,060
0.20
0,980
1,035
1,293
5,105
5,119
2,618
1,366
0,948
0,612
0,356
0,223
0,150
0,104
0,079
0,063
0.25
1,225
1,293
1,617
6,382
6,399
3,273
1,708
1,185
0,764
0,445
0,278
0,188
0,130
0,098
0,079
0.30
1,470
1,552
1,940
7,658
7,678
3,927
2,049
1,422
0,917
0,534
0,334
0,226
0,155
0,118
0,094
0.35
1,715
1,811
2,263
8,934
8,958
4,582
2,391
1,659
1,070
0,622
0,390
0,263
0,181
0,137
0,110
0.40
1,960
2,069
2,587
10,211 10,238
5,236
2,732
1,896
1,223
0,711
0,445
0,301
0,207
0,157
0,126
0.45
2,205
2,328
2,910
11,487 11,518
5,891
3,074
2,133
1,376
0,800
0,501
0,338
0,233
0,177
0,142
0.50
2,449
2,587
3,233
12,763 12,797
6,545
3,416
2,370
1,529
0,889
0,556
0,376
0,259
0,196
0,157
0.55
2,694
2,845
3,557
14,039 14,077
7,200
3,757
2,607
1,682
0,978
0,612
0,414
0,285
0,216
0,173
0.60
2,939
3,104
3,880
15,316 15,357
7,854
4,099
2,844
1,835
1,067
0,668
0,451
0,311
0,236
0,189
0.65
3,184
3,363
4,203
16,592 16,637
8,509
4,440
3,081
1,988
1,156
0,723
0,489
0,337
0,255
0,204
0.70
3,429
3,621
4,527
17,868 17,916
9,163
4,782
3,318
2,141
1,245
0,779
0,526
0,363
0,275
0,220
0.75
3,674
3,880
4,850
19,145 19,196
9,818
5,123
3,555
2,293
1,334
0,835
0,564
0,389
0,295
0,236
0.80
3,919
4,139
5,173
20,421 20,476 10,472
5,465
3,792
2,446
1,423
0,890
0,602
0,415
0,314
0,252
0.85
4,164
4,397
5,497
21,697 21,756 11,127
5,806
4,029
2,599
1,512
0,946
0,639
0,441
0,334
0,267
0.90
4,409
4,656
5,820
22,974 23,035 11,781
6,148
4,265
2,752
1,601
1,002
0,677
0,466
0,353
0,283
0.95
4,654
4,915
6,143
24,250 24,315 12,436
6,489
4,502
2,905
1,690
1,057
0,714
0,492
0,373
0,299
1.00
4,899
5,173
6,467
25,526 25,595 13,090
6,831
4,739
3,058
1,778
1,113
0,752
0,518
0,393
0,314
1,09
5,340
5,639
7,049
27,824 27,898 14,268
7,446
5,166
3,333
1,939
1,213
0,820
0,565
0,428
0,343
Summary of Contents for smART P500
Page 1: ...Instruction Manual Multifunction Protection Relay smART P500...
Page 23: ...2BTABLES INDEX THIS PAGE HAS BEEN LEFT BLANK INTENTIONALLY...
Page 39: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 9 Wye Wye Connection measured neutral...
Page 40: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 10 Wye Wye Connection sensitive neutral...
Page 41: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 11 Open Delta Connection measured neutral...
Page 42: ...5BHARDWARE FEATURES INTRODUCTION Figure 1 12 Open Delta Connection sensitive neutral...
Page 511: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 6 Moderately ANSI curve...
Page 513: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 7 Very inverse ANSI curve...
Page 515: ...2BANSI CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 8 Extremely inverse ANSI curve...
Page 532: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 14 Recloser Curves 101 119...
Page 535: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 15 Recloser Curves 120 142...
Page 538: ...4BRECLOSER CURVES 0BCURVES FOR TIME CHARACTERISTICS Figure I 16 Recloser Curves 151 202...