These impulse turbine are characterized their particular runner, that exhibit numerous double tea-spoon shaped buckets: the water jet coming from a regulating nozzle is received by the rotating buckets, split in two halves, deflected for almost 180°, and then leaves the runner with almost no remaining energy.
These turbine is widely used with head from 100 to 1000 meters and relatively low flow situations, maintaining high efficiencies through the whole operating range. Are available in single, double or quadruple jet configurations: the multiple jets allow to work with bigger maximum flow with still optimal low flow performance.
