The internal mains filtering system is effective when the sum of all motor cable lengths is 150 m or less. For applications whose sum of all motor cable lengths exceeds 150 m, an external mains filter is required to maintain the normative limit values.
EMC filter
|
Length of the motor cables |
IEC 61800 class |
Notes |
|---|---|---|
|
<15...150 m (49...492 ft) |
C3 |
– |
|
> 150 m (492 ft) |
C3 |
External EMC filter required |