CHAPTER 3: MOTOR PR OTECTION
3.12
EP OS MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
M otor
Heating
Class 30
K = 1
Class 30
K = 2
Class 30
K = 3
Class 30
K = 4
Class 30
K = 5
Class 30
K = 6
Class 30
K = 7
Class 30
K = 8
Class 30
K = 9
Class 30
K = 10
Class 30
K = 11
Class 30
K = 12
Class 30
K = 13
Class 30
K = 14
Class 30
K = 15
100
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
90
108
216
324
432
540
648
756
864
972
1080
1188
1188
1188
1512
1620
80
228
456
684
912
1140
1368
1596
1824
2052
2280
2508
2508
2508
3192
3420
70
365
730
1095
1460
1825
2190
2555
2920
3285
3650
4015
4015
4015
5110
5475
60
523
1046
1569
2092
2615
3138
3661
4184
4707
5230
5753
5753
5753
7322
7845
50
709
1418
2127
2836
3545
4254
4963
5672
6381
7090
7799
7799
7799
9926
10635
40
938
1876
2814
3752
4690
5628
6566
7504
8442
9380
10318
10318
10318
13132
14070
30
1232
2464
3696
4928
6160
7392
8624
9856
11088
12320
13552
13552
13552
17248
18480
20
1647
3294
4941
6588
8235
9882
11529
13176
14823
16470
18117
18117
18117
23058
24705
10
2356
4712
7068
9424
11780
14136
16492
18848
21204
23560
25916
25916
25916
32984
35340
Figure 3-8: Thermal cooling model when trip curve is set to IEC class 30.
K = Cooling Factor
Units = seconds