... single phase ,three phase.4.water flow:0.005m3/s to 0.9m3/s5.Water head:1.5 4m(low head type ... .Permissble ambient temperature:0 to 40degree Choose proper type of water generator as per flow and water ... Before purchasing a unit ,should choose a proper type according to local water source flow and drop ... long as minimum flow and fall indicated on mini type water-turbine generator set is met, secondly, check ...