Connect a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD

[GuyGadeboisTheBack]

[phil59]

Uh it's a 10µF for a 670W motor ...I get it quedale...anyway I never understood anything about these filthy electric motors!

Well, with a diode....

[izentrop]

Uh it's a 10µF for a 670W motor ...I get it quedale...anyway I never understood anything about these filthy electric motors!

Because it is a permanent capacitor https://jadengineer.com/condensateur-pe ... -demarrage

You have to see it on the ohmmeter and it will smoke if you plug in tri
A pump offers little resistance when starting, unlike a compressor (of a fridge, for example)

[Christophe]

Ah damn... But all this is a bit contradictory, isn't it?

10 µF does not correspond to any results of the formulas...

[izentrop]

Ah damn... But all this is a bit contradictory, isn't it?

10 µF does not correspond to any results of the formulas...

I don't know... Engineers also have the economic factor in mind, which also pushes them to always reduce the quantities of raw materials to achieve the same result, while meeting increasingly stringent standards.

[Christophe]

Yeah it's ok I understood: nobody understands anything!!

It's a PE 1000 MKP SH at 10 µF...it holds up well...I installed this pump in 2007 and it runs 1000h per year...so it's around 15h...

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[Macro]

After taking information from my winder this morning...I take back what I said yesterday...your motor most likely only has 2 windings and not 3 like an asynchronous three-phase if you connect your 3rd phase to the point middle... You'll just burn it...

Your capacitor is of small value because it is a permanent condo. a circulating centrifugal pump does not need a high starting torque Izentrop is right.

[Christophe]

Well it's dead then, is it not worth it that I waste time measuring the windings?

[izentrop]

I also think, like the coil of Fragger of the washing machine pump which only influences the start to give the direction of rotation. If it were a sorting (measurable with an ohmmeter), it would still require a substantial condo to create the necessary phase shift at nominal power... And perhaps waste copper for mono operation.

On my submerged pump, charged water, it seems to me that the condo was 40 µF for 750 W. It is the motor casing that was pierced by corrosion. I gave the new one a coat of rustproofing, we'll see if it lasts longer. I no longer leave it submerged permanently.

[Christophe]

I also think, like the coil of Fragger of the washing machine pump which only influences the start to give the direction of rotation. If it were a sorting (measurable with an ohmmeter), it would still require a substantial condo to create the necessary phase shift at nominal power... And perhaps waste copper for mono operation.

Agree except that 10µF is not 43 µF given by the formula you put above...

Short...