Inverter advice

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x7razor

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Hi need some advice we have one of these Booster Pumps (0-37KW).

I did measure power usage and it draws max 1.32Amps and 412.03 watts the lowest was 376.54 watts when in use.

What type of cheapish inverters is out there that would be best to run just this pump occasionally for like 2 minutes per run (still need to check how many times it does go on in a period of lets say 2 hours)

Need this to run just for during load shedding can be something i can hook up everytime does not need to be a permanent connected setup.
 
So on startup it pulls 2.1A and 356watts. When running it hovers around 410-413watts and 1.29-1.33amps
 
Maybe a car battery will work in this situation to keep costs down as its not being cycled too much?
 
Zuner said:
@OP PSW = Pure Sine Wave, important in this application.
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Yeah, you'll destroy an electric motor quite quickly if it's not high quality sine wave.

And on a side note: There is not such thing as pure sine wave unless it's from spinning generator.
 
$m@Rt@$$ said:
Yeah, you'll destroy an electric motor quite quickly if it's not high quality sine wave.

And on a side note: There is not such thing as pure sine wave unless it's from spinning generator.
Click to expand...
How does a grid tied inverter feed back into the grid then?
 
wingnut771 said:
and a charger. What to do with the used AC pump?
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Charger of course which is plus minus R900 plus pump R1550 = R2450 plus battery (ignoring as he would need a battery no matter which solution)

My thinking is that it would probably cheaper than buying an invertor.
 
rh1 said:
Charger of course which is plus minus R900 plus pump R1550 = R2450 plus battery (ignoring as he would need a battery no matter which solution)

My thinking is that it would probably cheaper than buying an invertor.
Click to expand...
I wonder if it has the same pressure output?
 
wingnut771 said:
How does a grid tied inverter feed back into the grid then?
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It tries to match the waveform close as possible of course, but it isn't perfect.

1664462325857.png

That is also why a 5kw inverter can't push 5kw to grid for instance. I think the best case is around 75% efficiency.

That is also why not every mediocre inverter is allowed to be grid tied. They're typically of higher standard and also much more expensive.
 
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