ECN Forum Forums Technical Discussion Electrical Theory and Applications Phase converters

Thanks, I think I get the jist.

Are there any books anyone is aware of that might explain in more detail phase converters?

They get discussed from a d-i-y point of view sporadically at rec.crafts.metalworking and rec.woodworking

If you don't have a usenet account set up, then search in "Google Groups."

hey hey you guys there is the other companine they do make phase conveter also it called ronk conveter i belive if i rember the web address is www.ronk.com but if i did give you wrong one please do let me know i used the ronk they make few diffrent versions of phase converts both satic and rotary version i allready deal both of it it have good and bad each one if need more info let me know i will try to explain more about

merci marc

Steve T;

I am unsure of any books to suggest. Maybe try your local Library, or do a Google Search.

I can draw some simple schematics, but at this time uploading graphics is N/A (some problems need to be fixed with the ECN server).

Once this is resolved, I can post away again!!!

Scott35 S.E.T.

02.08.03 17:20:00

Thanks guys

For Ω, type ampersand-pound-8486-semicolon. Here is an example, but type it without the spaces to get it to work:
& # 8 4 8 6 ;

For &#8730, type ampersand-pound-8730-semicolon. Here is an example, but type it without the spaces to get it to work:
& # 8 7 3 0 ;

[This message has been edited by ThinkGood (edited 02-08-2003).]

I hope I can ressurect this old thread.

In followup to:

"Steve, instead of visualizing it as a wye case, consider it more like a 4-wire-delta arrangement. There will still be ~240V between L1-L2 [and about ~120V L1-N and L2-N.] For the “manufactured” T3, there will be ROUGHLY 240V L1-T3, T3-L2 and ROUGHLY 208V T3-N, but don’t expect nice, even, symmetrical measurements like you’d see with conventional utility-type delta transformer service."

Since a rotary phase converter can serve multiple loads, I have a question regarding the distribution of its output with a 3 phase panel. Is it legal by code to treat this as a 4 wire Delta 240/120V system as outlined above. Can the neutral be brought along from the single phase supply to serve 120V single phase loads at the machine, motor controls in particular.

It's nice to see a topic be resurrected two years and one month later to the day.

Hi, 2 things to discuss:

1.
1 phase to 3 phase converter. I built one years ago from a 5 HP Heemaf 3Ø motor which I start on 2 Ø with a 125µF capacitor to the 3rd phase to get a phase shift. The motor starts up perfectly, when up to speed a 3 phase 3 x 230 volts is available.
This is perfect to start up any 3 Ø motors up to 3 HP. which don't have to start into a heavy load e.g. lathe etc.
This is done from a 230 V 50 Hz supply via a 16 Amp MCB.

omega symbol. I still like to find the short way of getting it. While typing i like to acces certain symbols without to drop down to other lettertypes etc to get it.
Like i can type now alt+230 and have direct access to µ symbol.
Why is it such a pain with the Omega!!!
i have goooooogled for it but not really to successfull at this stage.

sorry i did forget to add that i automatically switch the capacitor off after about 5 seconds when the mototr is up to speed.
The 3 phase motor appears to be quite happy single phasing and runs a lot smoother than a 1Ø motor (less noisy) OK i know that i have not the full 5 HP available but that doesn't matter. it serves my purpose of a 1Ø to 3Ø supply in my workshop at home.