@Dacian, very true, I don't think it would like that...
We've been playing with the Hydro today, changing nozzle sizes and spacing out the rotor trying to get the voltages in the correct range. This Hydro setup is right on the marginal side of things so not getting huge amount of power in any case.
With a 10.5mm nozzle and spacers we've got the voltages down to 68v open circuit and 26-27v under load at 10.5A. 270-280W is what we can expect with the current size pipe, head, and friction losses inherent in the current setup. Static pressure is 62 Psi and Dynamic is not 44.5 Psi.
We started with a 9.5mm nozzle which was only giving 23v under load at 11.5A max. So a much needed improvement in any case.
Will the DSSR0s handle that voltage range? I see that the spec sheet says 51V max PV input.
We could look at spacing the rotor out to further reduce the open circuit voltage, but this would also reduce the max current.