[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: How to determine three-phase power



Original poster: "Stephen Conner by way of Terry Fritz <teslalist-at-qwest-dot-net>" <steve-at-scopeboy-dot-com>

At 13:23 27/04/03 -0600, you wrote:
>Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>
>   There are rotary converters and such that convert single to three phase 
> (motor/generator).  They are very cheap used and not to bad 
> new.  Something like this:
>
>http://cgi.ebay-dot-com/ws/eBayISAPI.dll?ViewItem&item=2526540836&category=1267
>
>This place seems to have a lot of these,  Maybe ask if they have a single 
>phase to three phase unit...

You can use a regular 3-phase induction motor and a big run capacitor to 
convert single-phase power to 3-phase. You feed one phase of the motor 
straight off the line and another phase via the capacitor. The motor 
generates the third one. A lot of folk who buy surplus 3-phase machine 
tools use this trick.

Steve C.