What difference does running it at 60Hz make to enable it to complete reactions quicker ?
With an induction motor (which all of our pump motors are, excepting DC or funky pumps) the speed it runs at is a function of frequency.
Driving at 60Hz over 50Hz means it runs 20% faster. (ish...there's something slip too which varies depending on load, but ignore it to grab the principle of the thing)
Generally, you can drive a motor to the maximum rated current without ill effect - which you can achieve using an inverter drive as pump motors are normally oversized. So you can drive them faster, until you reach the maximum rated motor current. You also need to consider cavitation too as if you run too fast then the pump will start to cavitate.
For short durations, you can quite happily drive an induction motor at 10x rated current. Or longer if you improve cooling - which is how electric cars can derive so much power from a very small motor.
Hmmm...slight tangent at the end there. I've been at the homebrew.
