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-   -   1 & 3 phase questions (http://www.diychatroom.com/f18/1-3-phase-questions-35107/)

527ink 01-04-2009 09:22 PM

1 & 3 phase questions
 
hi i have a conveyor dryer that i picked up, it is currently wired for 3 phase but the guy i got it from said it can be wired to single phase.
how would i re wire for single phase untill i get my phase converter?

TazinCR 01-04-2009 09:28 PM

You have to have the converter.

Gigs 01-04-2009 09:30 PM

That's not necessarily true Tazin...

If the motor is single phase but the heating elements are crossing the phases (likely), then it would be possible to rewire it.

However we don't have anywhere near enough information to help you do it 527.

527ink 01-04-2009 09:40 PM

i have a schematic,its a lil hard to read(old) that i will try and upload to give you a better idea

527ink 01-04-2009 09:49 PM

http://i113.photobucket.com/albums/n...527/scan11.jpg

527ink 01-04-2009 09:53 PM

http://i113.photobucket.com/albums/n...mx527/scan.jpg

nap 01-04-2009 10:42 PM

from what I see, that drawing is for a single phase hook-up but the connections look like it requires a neutral as well.

doesn't it even say 230 1 phase and 208 1 phase in the llower right hand corner of the print?

It seems to require a neutral but that drawing sure bothers me. It looks like the power through 1 fu then goes through (?)#4 (another fuse ritght beside 1 fu) then it appears the neut attaches to the load side of the same fuse (#4) after it passes through what looks to be a switch.

Do you see what I am seeing or are my old eyes decieving me?

whoops, nevermind. It was my eyes. I see where the neut passes over the other conductor.

do you have a different drawing that would show a 3 phase connection?

527ink 01-04-2009 10:46 PM

ya it says 230 208 single phase

it just looks like im feeding 1&2 then getting a feed from some sorta switch the 3 and then tying into 1 with that

im just triple checking before i go fryin somthing lol

jbfan 01-04-2009 10:50 PM

I do not see anything in the drawing that suggest 3 phase.
Is there another drawing?

527ink 01-04-2009 10:59 PM

yes there is a seperate drawing for 3 phase
http://i113.photobucket.com/albums/n...x527/scan2.jpg

nap 01-05-2009 12:13 AM

all you have to do is remove all the connections that are not in the single phase drawing and add the ones that are and aren;t there now.:whistling2:


the transformer is not used. That is why you need a neutral because the controls are 120 volt.

you will need to rewire all the elements as well as how the power hooks into this in general. The transformer gets deleted. Then look at the area with the fuses. That and the heating elements should be the only changes you need.

It's not difficult but due to having to type every individual step and my inability to see everything real clearly, I would rather answer specific questions than try to tell you everything you need to do.


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