One of our clients has recently been approached by a company that is pushing 'donut' style harmonic filters in order to reduce energy usage. They look like small donut current transformers but these come in two pieces and are screwed together so no feeders need to be disconnected to install them. It looks like you install one on each phase as well as the neutral. I cannot find and hard engineering data to support their 10% energy saving claims so I figured I would post the question here. It also appears that they are not UL listed...
When I first heard about these the first thing I thought about was the small capacitor bank mystery boxes that also claimed significant energy savings...
So does anyone have any experience with these? Their website is economizersaves.com
Thanks,
Tom
When I first heard about these the first thing I thought about was the small capacitor bank mystery boxes that also claimed significant energy savings...
So does anyone have any experience with these? Their website is economizersaves.com
Thanks,
Tom