Eaton DS7 - Example of Other Load Cycles

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