K = cooling factor units = seconds – GE Industrial Solutions EntelliPro ES User Manual
Page 122
CHAPTER 3: MOTOR PR OTECTION
3.10
EP OS MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
M otor
Heating
Class 20
K = 1
Class 20
K = 2
Class 20
K = 3
Class 20
K = 4
Class 20
K = 5
Class 20
K = 6
Class 20
K = 7
Class 20
K = 8
Class 20
K = 9
Class 20
K = 10
Class 20
K = 11
Class 20
K = 12
Class 20
K = 13
Class 20
K = 14
Class 20
K = 15
100
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
90
72.36
144.72
217.08
289.44
361.8
434.16
506.52
578.88
651.24
723.6
795.96
795.96
795.96
1013.04
1085.4
80
152.76
305.52
458.28
611.04
763.8
916.56
1069.32
1222.08
1374.84
1527.6
1680.36
1680.36
1680.36
2138.64
2291.4
70
244.55
489.1
733.65
978.2
1222.75
1467.3
1711.85
1956.4
2200.95
2445.5
2690.05
2690.05
2690.05
3423.7
3668.25
60
350.41
700.82
1051.23
1401.64
1752.05
2102.46
2452.87
2803.28
3153.69
3504.1
3854.51
3854.51
3854.51
4905.74
5256.15
50
475.03
950.06
1425.09
1900.12
2375.15
2850.18
3325.21
3800.24
4275.27
4750.3
5225.33
5225.33
5225.33
6650.42
7125.45
40
628.46
1256.92 1885.38 2513.84
3142.3
3770.76 4399.22
5027.68
5656.14
6284.6
6913.06
6913.06
6913.06
8798.44
9426.9
30
825.44
1650.88 2476.32 3301.76
4127.2
4952.64 5778.08
6603.52
7428.96
8254.4
9079.84
9079.84
9079.84
11556.16
12381.6
20
1103.49
2206.98 3310.47 4413.96
5517.45
6620.94 7724.43
8827.92
9931.41
11034.9
12138.39
12138.39
12138.39
15448.86 16552.35
10
1578.52
3157.04 4735.56 6314.08
7892.6
9471.12
11049.64
12628.16
14206.68 15785.2 17363.72 17363.72 17363.72 22099.28 23677.8
Figure 3-6: Thermal cooling model when trip curve is set to IEC class 20.
K = Cooling Factor
Units = seconds