[mactec54]

I'm not confused at all.. I think you should do some additional research. a second line reactor can go between the VFD and motor and will reduce motor heating and smooth out the wave form, but the primary line reactor needs to go between the supply power source and the Emi filter (pre VFD). The Emi filter isn't going to do anything for harmonics in the lines being back fed due to the VFD and motor. Harmonics are low frequency under 3khz attenuations and are damaging. Rf is your higher frequency 3khz and higher and is more interference problematic. Low frequency harmonics can blow transformers and other supply buffers in components and equipment connected on the same supply line. This includes power company transformers which can be your responsibility to pay for to fix it you are improperly connecting your equipment to their grid. Hence power companies require supply side line reactors in order to be compliant.

The benefit is this also protects your components connected to the same supply lines as your VFD.

We manufacture VFD Power Modules, so no what is needed in terms of noise control

You should start your own thread on the subject, this thread is not about VFD Drives, and you are completely confused on this subject, if you want to be Technical, you will have to do a lot better than your last post, what you are saying in the above post is not correct, you need to know what order of Harmonics you are trying to Filter before you could even say what is needed, he is running a simple 60Hz motor with a max of may be 120Hz out of the VFD the worst Harmonics that he will ever have and anyone else is the 5th and 7th and any good 3% filters will take care of this that is what they are made to do, a Line Reactor serves a different purpose, and in this case it is not needed