Xylem SSW-07 Soft-Starter - Manual (Page 35)

CHAPTER 4 - SETTING THE SSW-07
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English
Time t(s)
10000
1000
100
10
1
S.F.=1,15 1x 2x 3x 4x 5x 6x 7x 8x 9x 10x
Class 30
Class 25
Class 20
Class 15
Class 10
Class 5
x In motor
current
S.F.=1 1x 2x 3x 4x 5x 6x 7x 8x 9x
Figure 4.8 - Thermal classes of motor protection in cold condition
Time t(s)
1000
100
10
1
1x 2x 3x 4x 5x 6x 7x 8x 9x S.F.=1
Class 30
Class 25
Class 20
Class 15
Class 10
Class 5
x In motor
Current
0.1
Figure 4.9 - Motor protection thermal classes in hot condition at 100 % ln