Re: [TCML] 3 Phase Power

[David Petzer <davepetzer@xxxxxxxxx>]

How about three step up transformers (or one three phase step up transformer) 
instead of one, with out puts wired in star or delta feeding a three phase 
rectifier. 


If you have a three phase supply then this is the best way to get the most power 
out of it.

David




________________________________

From: Peter Terren <pterren@xxxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Thu, June 2, 2011 3:32:18 AM
Subject: Re: [TCML] 3 Phase Power

Typically with Australian 240V 50Hz systems, the phase to neutral is 240V at 32A 
per outlet leg. Each leg would have a breaker as I understand.
For a recent show I needed 60A plus, so I plugged into two 3 phase outlets which 
were 5m apart. I used a switch to connect the red phases in parallel to increase 
the potential output current available before breakers trip. I have a light (two 
in series for 500V) to indicate if the phases are not correct before linking 
them.  This is not really legal or safe but worked fine for me. Theoretically I 
could draw 15kW with this arrangement.
It should work on large generators as well that have two or more plugs together.
Carlos at Lords of Lightning uses a transformer wound for 415V so he can use the 
voltage across two phases.  On a single plug this would give 12kW which is only 
half what he needs so it is wired directly for 25kW plus as I understand.

Peter
www.tesladownunder.com

----- Original Message ----- From: "Jim Lux" <jimlux@xxxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Wednesday, June 01, 2011 11:36 AM
Subject: Re: [TCML] 3 Phase Power


> On 5/31/11 6:24 PM, Cole Awesome-Jordan wrote:
>> If one had a coil set up to run off 60Hz power would one need to make
>> changes to make it work on 60Hz 3 phase power?
>> 
>> Than
> 
> no.  You'll just be running off one of the phases.  What voltage is your coil 
>set up for?
> 
> How is your 3 phase power provided?  two popular ways in the US are: 208/120Y - 
>called Wye or Star: it has an explicit neutral. the phase to phase voltage is 
>208V and the phase to neutral voltage is 120V.  Your 120V coil will run from one 
>of the phases to neutral.
> 
> 240 delta - 240V between phases, no neutral. you'll either need a step down 
>from 240 to 120, or if you've got a system where there's a neutral on the 
>midpoint of one of the phases, then you you run your 120V load from phase to 
>neutral.
> 
> If you're running a pole pig system, then you'll probably just run it off the 
>240V.
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