1 Device series DS7
1.14 Function
DS7 Soft starter
09/16 MN03901001Z-EN
www.eaton.com
31
Figure 16: Current behaviour in the uncontrolled phase
Conventional method:
Symmetrical control with high DC components
New process from Eaton (Moeller):
Asymmetrical control without DC components
→
With single-phase connected three-phase motors with
capacitors (Steinmetz circuit), system conditions always cause
an elliptical rotating field which cannot be completely
compensated by the asymmetrical trigger control.
Summary of Contents for DS7 Series
Page 1: ...Manual DS7 Soft starter 09 16 MN03901001Z EN...
Page 4: ...II...
Page 36: ...1 Device series DS7 1 14 Function 32 DS7 Soft starter 09 16 MN03901001Z EN www eaton com...
Page 96: ...3 Installation 3 6 Insulation test 92 DS7 Soft starter 09 16 MN03901001Z EN www eaton com...
Page 188: ...8 SmartWire DT 8 9 Programming 184 DS7 Soft starter 09 16 MN03901001Z EN www eaton com...