RE: Speaking of Electrum: was RE: Giant DC coil to run in Australia

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Mudford, Chris" <chris.mudford@xxxxxxxxxxxxxxxx>

Better still; for us little folk down here residing in New Zealand; if
it is ever running what are the chances of seeing it operating?

Cheers, Chris (NZ).

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Tuesday, 11 January 2005 8:36 a.m.
To: tesla@xxxxxxxxxx
Subject: Speaking of Electrum: was RE: Giant DC coil to run in Australia

Original poster: "GEORGE STEIN" <afa2fg@xxxxxxx>

I have seen several pics of the Electrum construction over the last few
years...Was it ever completed???   Did it work???   Any pictures of it
in
operation???

Later
George Stein
Bedford, Va.

>From: "Tesla list" <tesla@xxxxxxxxxx>
>To: tesla@xxxxxxxxxx
>Subject: RE: Giant DC coil to run in Australia
>Date: Mon, 10 Jan 2005 07:54:26 -0700
>MIME-Version: 1.0
>
>
>Original poster: Greg Leyh <lod@xxxxxxxxxxx>
>
>It's true that the charging reactors will work fine in the primary
>circuit, although the 3 reactors will undoubtedly contain more total
mass
>[and $] than a single reactor on the DC.  The reactor for Electrum is
2H,
>8.3Apk, and weighs about 100lbs.  I seem to remember it costing around
>$1800 from Stangenes, in 1997 $.  Here's a pic of it:
>http://www.lod.org/Projects/electrum/NewZealand/pages/nzreactor.html
>
>The 2H reactor happens to be a fairly standard build for Stangenes.
>Perhaps CAUAC has some slightly more exotic requirements.  Does anyone
>know the Cpri value for CAUAC?
>
>-GL
>
>
>>Original poster: "Steve Conner" <steve.conner@xxxxxxxxxxx>
>>
>> >It appears that the only thing limiting the charging current is the
>> >impedance of the transformers and power feed.
>>
>>As a fan of DC coiling I was pretty interested in the "CAUAC" thing.
An
>>absolutely awesome project and I can't wait to see pictures of the
next run.
>>Anyway I saw the following quote-
>>
>>"In fact I finally had to stop because my limiters started to smoke;
they
>>were pulling over 100 amps continuous through 8 AWG wire!"
>>
>>So I assume Syd used three reactors in the three incoming AC lines. If
I
>>remember my power electronics right this does limit the rectifier
output
>>current by introducing "overlap" but it would probably work a hell of
a lot
>>better with a real resonant charging choke. But that charging choke
will be
>>big and heavy (Maybe the $6,800 price included a free truck?)
>>
>>If you wanted to make your own choke, you could try dismantling a pole
pig
>>and reassembling it with an air gap :^)
>>
>>Steve C.
>
>
>