By Kelvin Hurdle, North America water wastewater industry manager, Rockwell Automation
There’s a contaminant that has long troubled water and wastewater operations, and you won’t find it in the water.
Harmonic distortion is like a pollutant on a power line. It can cause electrical equipment to act erratically or shut off, resulting in unplanned downtime. For wastewater operations, it can frustrate workers by making water treatment systems more difficult to optimize.
The IEEE 519 standard gives industry a target to achieve: a total harmonic distortion of 5% or less. The question is, how do you hit this target with minimal risk or impact to your operations?
The answer, it turns out, is mitigation technology in your drive.
A Contained Solution
A low-voltage AC drive with built-in harmonic mitigation can provide several benefits.
First and foremost, it can reduce the effects of harmonic distortion to help you comply with the IEEE 519 standard. But it also provides panel and floor savings compared to using external devices, such as harmonic filters or 18-pulse transformers. It also reduces wiring costs and installation time that can come with those devices.
An in-drive solution also puts the burden of managing the mitigation on the drive manufacturer.
This means if you work in water and wastewater operations, you don’t have to specify, install and maintain extra technology beyond the drive itself. It also means you don’t have to worry about the new technology impacting your drive’s performance — such as the efficiency losses that can be caused by a transformer’s heat.