Eaton DS7 - Page 54

2 Engineering
2.11 Motor connection
50 DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com
Q1 = Cable protection
Q11 = Mains contactor
Q21 = Soft starter
Q22 = Bypass contactor/
Emergency operation
protection
Q31 = Motor contactor
F3 = Semiconductor fuse for
type 2 coordination, in
addition to Q1
M1 = Motor
Figure 32: Power section – example: DS7 ≧ 41 A with bypass emergency operation
M
M1
F3
3 ~
L1
L2
L3
PE
3L2
Q1
Q11
Q31
Q22
1L1 5L3 PE
PE
2T1
Q21
4T2 6T3
I > I > I >