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RE: 3 phase pole pig (fwd), Richie's Site back up (fwd)
---------- Forwarded message ----------
Date: Mon, 5 Nov 2007 08:35:50 +0000
From: Paul Benham <PaulB@xxxxxxxxxxxxxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: RE: 3 phase pole pig (fwd), Richie's Site back up (fwd)
Hi Jim,
For the Charging inductor MOT secondaries work very well with very good efficiency. I have four MOT secondaries's in series for 14H total at the moment. The I's, primaries, heater windings, and shunts have been removed. my DC voltage from the PSU is 10kV approx.
With four in series I have had no breakdown over the last few years.
Cheers,
Paul
Paul Benham
Senior RF Engineer
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-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: 03 November 2007 19:41
To: tesla@xxxxxxxxxx
Subject: RE: 3 phase pole pig (fwd), Richie's Site back up (fwd)
---------- Forwarded message ----------
Date: Fri, 2 Nov 2007 19:30:14 -0700
From: Jim Mora <jmora@xxxxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: RE: 3 phase pole pig (fwd), Richie's Site back up (fwd)
Hello,
My Radar transformer is in one unit and is three phase. Take a looking at
Richie's schematic again. Mine has a 208v wye input. You may want to read
Richie's section on **** DC resonant charging**** as 4-10KV is a bit low.
With de-queing diodes the output voltage effectively doubles. Ballast may
not be needed if you use an ASRG. If you look at Richie's charging equations
( the last 2 in the section) the output power increases with the RPM of the
ASRG. A triple stack of variacs (3p) of adequate rating can be used to ramp
up the input voltage but may be not required. You can not run the ASRG too
slow however.
Finding a charging inductor or making one will be a challenging project that
we would be interested in, ideas anyone?
My Radar PSU has a big one in the tank and outputs 28KVDC with 3p 60hz
208v/y input and (6) 8020 vacuum tubes for the 6 pulse rectification - quite
Frankenstein-ish.
Please post a picture of your 3p transformer, it sounds interesting and
beast like!
Jim Mora
-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Friday, November 02, 2007 1:06 PM
To: tesla@xxxxxxxxxx
Subject: Re: 3 phase pole pig (fwd), Richie's Site back up (fwd)
---------- Forwarded message ----------
Date: Fri, 02 Nov 2007 15:02:19 +0200
From: Tomas Stankevic <Tomas.Stankevic@xxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: 3 phase pole pig (fwd), Richie's Site back up (fwd)
Really good site!
In the 6 pulse design there are 3 separate transformers used, but I am
going to have one 3phase unit. Is there a difference about it? I am
almost sure that it's not going to be any zigzag or smth. In Lithuania
there are usually 10kV to 0,4kV
3 phase transformers with 120deg angle between phases. I dont know what
other configurations might be.
What about a ballast for it?
Tesla list wrote:
> ---------- Forwarded message ----------
> Date: Thu, 1 Nov 2007 19:49:36 -0700
> From: Jim Mora <jmora@xxxxxxxxxxx>
> To: 'Tesla list' <tesla@xxxxxxxxxx>
> Subject: RE: 3 phase pole pig (fwd), Richie's Site back up
>
> Richie's most excellent site.
>
> http://www.richieburnett.co.uk/dcresist.html
>
> Check the 6 pulse design.
>
> Jim Mora
> Ojai, Ca.
>
>
> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Thursday, November 01, 2007 3:33 PM
> To: tesla@xxxxxxxxxx
> Subject: Re: 3 phase pole pig (fwd)
>
>
> ---------- Forwarded message ----------
> Date: Thu, 1 Nov 2007 16:15:00 -0500
> From: David Dean <deano@xxxxxxxxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: 3 phase pole pig (fwd)
>
> On Thursday 01 November 2007 08:52:53 am you wrote:
>
>> ---------- Forwarded message ----------
>> Date: Thu, 01 Nov 2007 00:06:33 +0200
>> From: Tomas Stankevic <Tomas.Stankevic@xxxxxxxx>
>> To: Tesla list <tesla@xxxxxxxxxx>
>> Subject: 3 phase pole pig
>>
>> Hi, I am going to get a 3 phase 25 kVA pole pig. Can I use all 3 phases
>> to have maximum power? How could I do this?
>>
>> Tomas
>>
>
> Hi Tomas
>
> Can you give some specs. on the transformer?
>
> I understand three phase is pretty common in Europe. If you have a three
> phase service it would be reasonably easy. You fed it three phase in and
> rectify the three phase output and use it to power a DC coil.
Configuration
> would depend on how the transformer is wired internally.
>
> I remember seeing where someone had made three identical Tesla coils and
ran
>
> them in close proximity from a common three phase source, each on a
> different
> phase. The three toploads arced together to form a "Y". I seem to remember
> someone else doing something similar with a solid state device.
>
> later
> deano
>
>
>
>
>
>
>
>
>
>
>
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