2.7.7 Star/delta Starter or Soft-starter not required
When larger motors are started, it is necessary in many countries to use equipment that limits the start-up current. In more traditional systems, a star/
delta starter or soft-starter is widely used. Such motor starters are not required if a frequency converter is used.
As illustrated in the figure below, a frequency converter does not consume more than rated current.
1 = VLT AQUA Drive
2 = Star/delta starter
3 = Soft-starter
4 = Start directly on mains
2 Introduction to VLT AQUA Drive
VLT
®
AQUA Drive Design Guide
18
MG.20.N5.02 - VLT
®
is a registered Danfoss trademark
2
