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

Hi-tech electronic and computer equipment and Internet. Better use of electricity, help with the work and specifications, equipment selection. Presentations fixtures and plans. Waves and electromagnetic pollution.
Christophe
Moderator
Moderator
posts: 79002
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10934

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




by Christophe » 06/09/22, 15:10

Generally it is the opposite that seeks to do: feed a tri pump in mono ... well me it's the opposite! : Cheesy:

In order to be able to use my 220V AC three-phase output VFD (see electricity-electronics-computers/who-would-have-already-used-a-vfd-to-simulate-three-phase-from-220v-t17282.html ) to vary the speed of rotation and especially the power of my solar pump, I would need to rewire it in three-phase 220V.

It is a single phase pump,

In your opinion, is it possible by seeing these photos of the single-phase wiring?

20220906_125228.jpg


20220906_125444.jpg
20220906_125444.jpg (451.62 KB) Viewed times 2282


It is currently wired on three-phase 127V without neutral (= 230 V between phase, without neutral).

When cold I would have done this:

cablage_triphase_pompe_guinard_monophasée.jpg


Provided that the cable that goes into the motor and comes out is only a thermal...(which I think...)

Do you validate? Otherwise a little help would be welcome! Thanks Zamis!
0 x
User avatar
Macro
Econologue expert
Econologue expert
posts: 6426
Registration: 04/12/08, 14:34
x 1586

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by Macro » 06/09/22, 15:30

When cold, yes... When hot, check the direction of rotation...
0 x
The only thing safe in the future. It is that there may chance that it conforms to our expectations ...
Christophe
Moderator
Moderator
posts: 79002
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10934

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by Christophe » 06/09/22, 17:39

Cool so that looks good! 8) You see that we can agree on the technique! : Mrgreen:

So for the meaning I thought about it: no chance of knowing the right one before trying! (I believe)

There is a reverse mode on the VFD...or more simply I reverse 2 of the 3 wires at its output...

The rewiring of the pump will impose to put it down because I only have 10 cm with the ceiling, sucks...

The pump is not primed at startup so if it turns upside down I don't think there is any risk of breakage (not necessarily true if it was primed)...
0 x
izentrop
Econologue expert
Econologue expert
posts: 13625
Registration: 17/03/14, 23:42
Location: picardie
x 1499
Contact :

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by izentrop » 06/09/22, 18:04

Check the resistance of the windings with an ohmmeter:
If all three are the same, that should do it, but usually the start winding doesn't carry the same current. It consists of a wire with a smaller section than the main winding (its
resistance is therefore higher).
0 x
Christophe
Moderator
Moderator
posts: 79002
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10934

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by Christophe » 06/09/22, 18:05

Alright I'll do that, is that the one wired to the capacitor?

And if it's not good, what do I risk? How many % margin am I entitled to?
0 x
izentrop
Econologue expert
Econologue expert
posts: 13625
Registration: 17/03/14, 23:42
Location: picardie
x 1499
Contact :

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by izentrop » 06/09/22, 19:06

In general, single-phase motors have only 2 windings

All setups: https://sites.google.com/site/rebobinag ... monophases
The only one that might fit is 08.
1 x
Christophe
Moderator
Moderator
posts: 79002
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10934

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by Christophe » 06/09/22, 19:10

I'm going to measure the Ohms...we'll see...

I have another single-phase pump which is three-wired...there's a double diagram on the cover that explains it so I think it's not that rare.

And guinard does three-phase push-ups...fingers crossed...

Otherwise, simpler, with the value of the capacitor we can know if it is a tri or mono winding??
0 x
izentrop
Econologue expert
Econologue expert
posts: 13625
Registration: 17/03/14, 23:42
Location: picardie
x 1499
Contact :

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by izentrop » 06/09/22, 20:20

Christophe wrote:Otherwise, simpler, with the value of the capacitor we can know if it is a tri or mono winding??
non
Found in 2 seconds https://jadengineer.com/calcul-capacite ... -en-ligne/
1 x
Christophe
Moderator
Moderator
posts: 79002
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10934

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by Christophe » 06/09/22, 21:20

What no ? Then yes ?

Thanks for the link, in three-phase it's between 45 and 53 µF... in mono it's 43 µF...

2µF difference doesn't matter...I'll look at the value...if I have a 50 µF, then it's a three-phase winding?
0 x
Christophe
Moderator
Moderator
posts: 79002
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10934

Re: Connecting a Guinard Kietis single-phase pump to three-phase 220 V for use on a VFD




by Christophe » 06/09/22, 21:36

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

 


  • Similar topics
    Replies
    views
    Last message

Back to "Electricity, electronics and computers: Hi-tech, Internet, DIY, lighting, materials, and new"

Who is online ?

Users browsing this forum : No registered users and 110 guests