K = cooling factor units = seconds – GE Industrial Solutions EntelliPro ES User Manual
Page 119
CHAPTER 3: MOTOR PR OTECTION
EP OS MOTOR MANAGEMENT SY STEM – INSTRUCTION MANUAL
3.7
M otor
Heating
Class 5
K = 1
Class 5
K = 2
Class 5
K = 3
Class 5
K = 4
Class 5
K = 5
Class 5
K = 6
Class 5
K = 7
Class 5
K = 8
Class 5
K = 9
Class 5
K = 10
Class 5
K = 11
Class 5
K = 12
Class 5
K = 13
Class 5
K = 14
Class 5
K = 15
100
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
90
16.2
32.4
48.6
64.8
81
97.2
113.4
129.6
145.8
162
178.2
178.2
178.2
226.8
243
80
34.2
68.4
102.6
136.8
171
205.2
239.4
273.6
307.8
342
376.2
376.2
376.2
478.8
513
70
54.75
109.5
164.25
219
273.75
328.5
383.25
438
492.75
547.5
602.25
602.25
602.25
766.5
821.25
60
78.45
156.9
235.35
313.8
392.25
470.7
549.15
627.6
706.05
784.5
862.95
862.95
862.95
1098.3
1176.75
50
106.35
212.7
319.05
425.4
531.75
638.1
744.45
850.8
957.15
1063.5
1169.85
1169.85
1169.85
1488.9
1595.25
40
140.7
281.4
422.1
562.8
703.5
844.2
984.9
1125.6
1266.3
1407
1547.7
1547.7
1547.7
1969.8
2110.5
30
184.8
369.6
554.4
739.2
924
1108.8
1293.6
1478.4
1663.2
1848
2032.8
2032.8
2032.8
2587.2
2772
20
247.05
494.1
741.15
988.2
1235.25
1482.3
1729.35
1976.4
2223.45
2470.5
2717.55
2717.55
2717.55
3458.7
3705.75
10
353.4
706.8
1060.2
1413.6
1767
2120.4
2473.8
2827.2
3180.6
3534
3887.4
3887.4
3887.4
4947.6
5301
Figure 3-3: Thermal cooling model when trip curve is set to IEC class5
K = Cooling Factor
Units = seconds