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2 Engineering
2.15 Example of other load cycles
2.15 Example of other load cycles
58
DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com
Soft starter DS7-34xSX009...: 9 A AC-53a: 3-5: 75-10
I. Stand-alone setup without device fan
30 s
25 s
20 s
15 s
10 s
5 s
s
9 A
18 A
II. Stand-alone setup with DS7-FAN-032 device fan
30 s
25 s
20 s
15 s
10 s
5 s
s
9 A
18 A
III. Combination of xStart components without device fan
The overload curve of the DS7-34xSX007 soft starter applies to
DS7-34xSX009....
30 s
25 s
20 s
15 s
10 s
5 s
s
9 A
18 A
① At Tx = 5 s the permissible overcurrent factor here is reduced to around
X = 2.2 (IRLP = 20 A).
② I
= 27 A: At T
RLP
x
10/h
1/h
20/h
27 A
36 A
45 A
40/h
4/h
80/h
27 A
36 A
45 A
10/h
1/h
20/h
27 A
36 A
45 A
①
②
= 5 s and X = 3 one start per hour is permissible here.
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