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Someone did a review of GS6000 running a well pump and the inverter shutdown at over 8000 watts . He did another test with the well pump and the inverter shutdown at 170 degree F . Do the surge of the well pump cause the shutdown ? Sean 2 ton AC with LRA 77 did not shutdown or overheat with the GS6000 unlock . The GS 12kw will have run a surge of 28000 watts to run my 4 ton heatpump . It is going to be hard to set the amount of surge and not have to unlock the inverter to run the 4 ton heatpump . I will never unlock your inverter . I do not understand the problem of surge but the dc voltage drop fast and the transformer temperature go up fast and the square wave will destroy induction motors .
I assume you are talking about this video =>
Since he was right at the continuous limit of the inverter pulling right around 6000 watts in the video; It had very little overhead left to handle the surge of the well pump. Or any other large inductive load at that point. I am not privy to the what the max surge is on a stock locked GS6000 inverter but I would guess the max surge is probably something close to 12-15KW for a fraction of a second and maybe 8000-12000 for a few seconds (Sid would likely be able to tell you more). I think the surge capability is something that Sean and Sid are still trying to get a gauge on as it is hard to measure inrush and starting surge since most available hand held test equipment is simply not fast enough. LRA ratings are the absolute maximum current that the motor can draw at full terminal voltage with a stalled rotor so the starting surge will be somewhere in between the LRA rating and the normal operating load.
A square wave output won't destroy induction motors (at least right away) but it will cause them to run hotter, pull more amps and de-rate their max output. If the motor was already barely able to keep itself cool. then running it on a square wave or poorly designed modified sine inverter will eventually cause it to overheat and fail. An old trick was to use a 1:1 isolation transformer between square wave or modified sine inverter to knock the edges off the wave form cleaning it up some but again you are just moving the heat and losses around but it would protect the motors.
An old trick was to use a 1:1 isolation transformer between square wave or modified sine inverter to knock the edges off the wave form cleaning it up some but again you are just moving the heat and losses around but it would protect the motors.
Has someone been snooping around my house? 😉 I used a step-up/step-down transformer when running the modified square wave or the Reliable 3k sine wave just to make starting the fridge easier. Never tried it with the U-Power ( PJ ) one to see what would happen. As the transformer is a toroidal one it didn't care about the wave form in.