The Grundfos SQ AC Submersible pump features a permanent magnet motor controlled by an electronic frequency converter developed by Grundfos. It starts slowly, without surge, so it can be run on a much smaller inverter or generator than any conventional AC submersible pump. It is a high-efficiency pump and motor with built-in dry-run protection.
This is the ideal pump to use if you are pumping from a well and into a pressure tank, especially for solar-powered homes. They work on modified sine wave or sine wave inverters. Highest volume pumps run on 240VAC. They can be powered by inverter sytems with 240VAC output, or by using an auto transformer to step 115VAC from an inverter to 240 to run the pump. Minimum well diameter of 3' is required. Use 2-conductor with ground pump cable.