Re: pole pig beginner

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Mddeming@xxxxxxx 

Just a thought,

    The 15KVA pole pig that powers many single residences already 
assumes that you are not loading your house lines more than 62.5% 
since most home distribution panels are 200A and 15 KVA is only 
125A.@ 120 V.  The question becomes "how long can a transformer 
designed for 60% load be operated at or above 100% possible load? I 
live in an older part of t\my town where there is one 37.5 KVA 
transformer for every 5 houses.Only 2 transformers have blown in the 
last 5 summers at our end of the street.

Matt D.



In a message dated 7/26/06 4:52:28 P.M. Eastern Daylight Time, 
tesla@xxxxxxxxxx writes:
Original poster: ben eells <squeels2171@xxxxxxxxx>

I was thinking about this overnight and I came up with another
question. you said if I didn't limit the current to the pig that it
would try to draw approx. 700 amps. This next quote here is form Chip
in the previous post:

"It's unlikely you'll pull 200A from your coil, but if
you
do, the pig that powers your house will be ok if you don't do it for
very
long (long being in hours or so)."
I don't plan on running a coil for hours. I'm aiming for minutes. So
my question is given a big enough MMC bank and the right current
reactor is it possible to pull more than 15 KVA from the pig that
powers my house? Again I wouldn't plan on doing this for more than 5
minutes or so. My first thought was no. but after reading your post
and hearing from everyone that pole pigs are almost indestructible
I'm thinking that maybe it could be done. As always all input is
appreciated. Thanks
Tesla list <tesla@xxxxxxxxxx> wrote:
Original poster: "Dr. Resonance"


We have 10 kVA pole xmfrs that run on 220 VAC, not 440 VAC. Some of
the large industrial units usually in large quarries, chemical plans,
industrial metal working plants, etc, do actually run on 440 VAC. If
you only have 220 VAC at your home, do not use this type of xmfr.

I have the correct xmfr you need, a standard 220 vac to 14.4 kV 10
kVA pole xmfr.

As with any pole xmfr, a series 220 vac primary current reactor is
required to keep the maximum current from exceeding the value your
capacitor bank requires. With a typical setup, a .05 to .08 uF cap
bank requires 30 to 50 Amps on the 220 volt side. Your series power
reactor must limit the maximum current to this value. Best test is
to set up a climbing arc or just short out the 14.4 kV (HV) side of
the xmfr and then use a variac to bring in the power slowly. The
reactor is adjusted to match the current you require.

If you don't use a reactor at all the xmfr will try to draw approx
700 Amps and blow your breakers! The current must be limited.

The 15 kVA xmfr is the max. continuous current that your house pole
xmfr can supply. If everything else in the house is shut off, you
can draw the full 15 kVA for short periods of time. Be sure to shut
off current hogs such as stoves, elec. hot water heaters, and clothes
dryers when you run a large coil. A full 15 kVA will probably match
up well with a 24 inch dia. coil running a 40 x 12 inch toroid and a
0.15 to 0.20 uF 50 kV capacitor bank.

When you build a big coil be prepared in advance to spend big bucks
for all the necessary parts to do it right.

We sell the xmfrs for $125.00 if you need one --- I have 60 of them in stock.

Dr. Resonance