Hopefully that Vendor is the drive manufacturer, not an aftermarket supplier. ABB - for example - does build drives with optional outputs that allow you to have various lengths of leads, far longer than the ordinary drives. They DO work and you hook up the scope and some of them are hardly different from a pure sine-wave.
Originally Posted by Runnerzo
There are also harmonic traps available that eliminates the standing wave problem, they are installed at the motor terminals. (EATON)
Have you considered installing the drive closer to the motor? I know that we reflexively try to keep the drives in an MCC or Switchgear building, but they do offer drives with NEMA 12 enclosures and the work well. Another option is to put the drive in its own, purged and air-conditioned enclosure at the motor. Just have to calculate which of these are the most economical and reliable.
(The 4100' almost sounds like calling for a MV drive or MV transmission anyway and the MV drives have much greater lengths allowance than LV.)
Watch your carrier frequency! Greatly affects cable length....small print.
Last edited by weressl; 01-05-11 at 05:15 PM.
Laszlo Z Weress
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