Mains chokes 335
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?
The mains choke typically
• reduces harmonics in the input current
• reduces the r.m.s. input current
• reduces supply disturbance and low-frequency interference.
The ACL30 does not necessarily require a mains choke for operation. The need for
an external choke should be determined on a case-by-case basis. The drive modules
of frame sizes C and D have an internal mains choke as an option.
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