Marotechniek, a Dutch company involved in finding new solutions for the dredging, marine, offshore and industrial sectors, has developed a new electric underwater motor, which will have its inaugural showcase during the 2015 Europort exhibition.
The unit, driven by a permanent magnet submersible motor, is especially suitable for waterborne sand mining.
The motor features built-in ‘permanent magnets’, eliminating the need to magnetize the rotor.
Elimination of reactive current reduces required amperage, leading to higher efficiency.
Overall, the pump assembly is 2-3% more efficient than traditional three-phase current sets and the unit is much more compact and lightweight, with less cabling required.
Prior to introduction, the E-motor successfully completed extensive testing on a sand dredger.