Mains chokes 155
Mains chokes
Contents of this chapter
This chapter describes how to select and install mains chokes for the drive module.
The chapter also contains the relevant technical data.
When is a mains choke required?
With frames R1 and R2, the need for an external choke should be determined on a
case-by-case basis. With frames R3 and R4, the drive modules have an internal
mains choke.
The main choke typically
• reduces harmonics in the input current
• reduces the r.m.s. input current
• reduces supply disturbance and low-frequency interference
• increases the allowed DC bus continuous power
• ensures even current distribution in common DC configurations (see
DC connection on page 82).
To Next Page
Loading...
