Case Study – Indiana WWTP


Wastewater treatment plant retrofit project needed additional harmonic mitigation in the form of passive harmonic filters. The plant operator required contactor control and feedback that the harmonic filters were in operation. A combination of 16 different non-linear loads ranging from 10 to 40 HP required harmonic mitigation.



HGP passive harmonic filters with PQconnect technology were applied to this wastewater treatment plant. This solution enabled the operator to control the filters remotely, and adjust the contactor drop out and pick up as needed. The operator knew that the filters were in continuous operation remotely.