Since the VLH concept only addresses a relatively narrow range of heads and flow rates, it is perfectly well adapted to being totally standardized.

Range of products:
A range of machines provided in 5 diameters (3,550, 4,000, 4,500, 5,000, 5,600 mm) has thus been designed.

VLH turbines hydraulic contours   Click to enlarge

Turbines: générals data   Click to enlarge

Net head range:
The net head range addressed by the VLH concept extends from 1.4 to 2.8 m and more.

Flow range:
The range of flow rates of the equipments extends from 10 to 30 m3/s, and the addition of several units on a same site enables considering very high total equipment flow rates.

Power range:
This results in a range of power per unit from 100 to 500 kW (at generator terminal box). It is estimated that below 100 kW, it is difficult for the wanted profitability to be achieved, and the studies performed up to now demonstrate that above 500 kW, it is more profitable to install several smaller machines rather than a single large one.