Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts out
at 4 to 5 amps. Will be using a input choke power supply so that will
keep the Plate Voltage at the manufacture spec's of around 5 grand on
the plates.

For a pair of 3CX3000A7 tubes.

Jay in the Mojave

On Sat, 12 Feb 2005 07:18:49 -0800, Jay in the Mojave
wrote in :

Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts out
at 4 to 5 amps. Will be using a input choke power supply so that will
keep the Plate Voltage at the manufacture spec's of around 5 grand on
the plates.


You might have better luck running single-phase, then all you would
need is a small pole-pig that you can get for a couple bills in just
about any well-stocked junkyard. Otherwise you will probably have to
roll your own, which can get quite expensive (iron, copper, oil, can,
vacuum pump, etc). So how much are you planning to spend on this
transformer?




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"Frank Gilliland" wrote in message
...
On Sat, 12 Feb 2005 07:18:49 -0800, Jay in the Mojave
wrote in :

Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts out
at 4 to 5 amps. Will be using a input choke power supply so that will
keep the Plate Voltage at the manufacture spec's of around 5 grand on
the plates.


You might have better luck running single-phase, then all you would
need is a small pole-pig that you can get for a couple bills in just
about any well-stocked junkyard. Otherwise you will probably have to
roll your own, which can get quite expensive (iron, copper, oil, can,
vacuum pump, etc). So how much are you planning to spend on this
transformer?


Good call, Frank. A single phase, 15-25KVA pole pig, standard residential
has 240 volt input, and should work nicely. Incidentally, all three phase is
240, 277, or 480. There is no more 220 or 440, unless you change the taps or
rewind one. Much like the mis-stated 110, which is actually 120.

On Sun, 13 Feb 2005 03:47:46 GMT, "U Know Who"
wrote:


"Frank Gilliland" wrote in message
.. .
On Sat, 12 Feb 2005 07:18:49 -0800, Jay in the Mojave
wrote in :

Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts out
at 4 to 5 amps. Will be using a input choke power supply so that will
keep the Plate Voltage at the manufacture spec's of around 5 grand on
the plates.


You might have better luck running single-phase, then all you would
need is a small pole-pig that you can get for a couple bills in just
about any well-stocked junkyard. Otherwise you will probably have to
roll your own, which can get quite expensive (iron, copper, oil, can,
vacuum pump, etc). So how much are you planning to spend on this
transformer?


Good call, Frank. A single phase, 15-25KVA pole pig, standard residential
has 240 volt input, and should work nicely. Incidentally, all three phase is
240, 277, or 480. There is no more 220 or 440, unless you change the taps or
rewind one. Much like the mis-stated 110, which is actually 120.


I don't think thats totally true Randy. I installed a BGA solder
station that required 240. The only circuit I had open was a 3 phase
circuit. Only 208 volts betwwen legs, I had to put a buck/boost
transformer on it to get the voltage up to 240 to get it to run
correctly.

Most local transmission voltages are 44 kV, 27.6 kV, 13.8 kV and 6.9
kV. A little higher than what Jay was looking for.

On Sun, 13 Feb 2005 13:47:19 GMT, Lancer wrote in
:

On Sun, 13 Feb 2005 03:47:46 GMT, "U Know Who"
wrote:


"Frank Gilliland" wrote in message
. ..
On Sat, 12 Feb 2005 07:18:49 -0800, Jay in the Mojave
wrote in :

Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts out
at 4 to 5 amps. Will be using a input choke power supply so that will
keep the Plate Voltage at the manufacture spec's of around 5 grand on
the plates.


You might have better luck running single-phase, then all you would
need is a small pole-pig that you can get for a couple bills in just
about any well-stocked junkyard. Otherwise you will probably have to
roll your own, which can get quite expensive (iron, copper, oil, can,
vacuum pump, etc). So how much are you planning to spend on this
transformer?


Good call, Frank. A single phase, 15-25KVA pole pig, standard residential
has 240 volt input, and should work nicely. Incidentally, all three phase is
240, 277, or 480. There is no more 220 or 440, unless you change the taps or
rewind one. Much like the mis-stated 110, which is actually 120.


I don't think thats totally true Randy. I installed a BGA solder
station that required 240. The only circuit I had open was a 3 phase
circuit. Only 208 volts betwwen legs, I had to put a buck/boost
transformer on it to get the voltage up to 240 to get it to run
correctly.

Most local transmission voltages are 44 kV, 27.6 kV, 13.8 kV and 6.9
kV. A little higher than what Jay was looking for.


The voltage isn't as important as the ratio; i.e, you can run a 480
volt transformer at 240 to get a lower output. And since older pigs
came in all kinds of sizes and ratios, you never know what's available
until you look.






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Hello Frank:

Yes we did have better luck goin the single phase route. But do have
single and three phase avialable.

After making a new type of quad/yagi type of beam for 2 meters and
listening in on the ZOO channel 147.435 MHz and a few other Los Angles 2
meter repeaters I heard a conversation talking about a 10KW broadcast
transmitter that had some sort of shipping and or fire damage, but the
power supply was in good shape, down in San Pedro California. I called
the guy and will have the place and insurance point of contact Monaday.
But it does use 220 or 240 single phase, we will see.

If this was really for a 10 KW Transmitter tha used a pair of 3CX3000 or
a single 3CX6000 then this may be the ticket.

Jay in the Mojave

Frank Gilliland wrote:

On Sat, 12 Feb 2005 07:18:49 -0800, Jay in the Mojave
wrote in :


Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts out
at 4 to 5 amps. Will be using a input choke power supply so that will
keep the Plate Voltage at the manufacture spec's of around 5 grand on
the plates.



You might have better luck running single-phase, then all you would
need is a small pole-pig that you can get for a couple bills in just
about any well-stocked junkyard. Otherwise you will probably have to
roll your own, which can get quite expensive (iron, copper, oil, can,
vacuum pump, etc). So how much are you planning to spend on this
transformer?

Jay in the Mojave wrote:
After making a new type of quad/yagi type of beam for 2 meters and
listening in on the ZOO channel 147.435 MHz and a few other Los
Angles 2
meter repeaters I heard a conversation talking about a 10KW broadcast

transmitter that had some sort of shipping and or fire damage, but
the
power supply was in good shape, down in San Pedro California. I
called
the guy and will have the place and insurance point of contact
Monaday.
But it does use 220 or 240 single phase, we will see.

If this was really for a 10 KW Transmitter tha used a pair of 3CX3000
or
a single 3CX6000 then this may be the ticket.

Jay in the Mojave


A pair of 3CX3000A7 has no legitimate use on ham or CB. Jay, you are
like the guy who walks into the break room at work and says "Hi, does
anyone know where I can get a detonator for some C4?". IOW, he is
saying it only to impress his buddies.

"Lancer" wrote in message
...
On Sun, 13 Feb 2005 03:47:46 GMT, "U Know Who"
wrote:


"Frank Gilliland" wrote in message
. ..
On Sat, 12 Feb 2005 07:18:49 -0800, Jay in the Mojave
wrote in :

Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts out
at 4 to 5 amps. Will be using a input choke power supply so that will
keep the Plate Voltage at the manufacture spec's of around 5 grand on
the plates.


You might have better luck running single-phase, then all you would
need is a small pole-pig that you can get for a couple bills in just
about any well-stocked junkyard. Otherwise you will probably have to
roll your own, which can get quite expensive (iron, copper, oil, can,
vacuum pump, etc). So how much are you planning to spend on this
transformer?


Good call, Frank. A single phase, 15-25KVA pole pig, standard residential
has 240 volt input, and should work nicely. Incidentally, all three phase
is
240, 277, or 480. There is no more 220 or 440, unless you change the taps
or
rewind one. Much like the mis-stated 110, which is actually 120.


I don't think thats totally true Randy. I installed a BGA solder
station that required 240. The only circuit I had open was a 3 phase
circuit. Only 208 volts betwwen legs, I had to put a buck/boost
transformer on it to get the voltage up to 240 to get it to run
correctly.

You're right! I forgot about 208!

"Lancer" wrote in message
ews.com...
bbOn Sun, 13 Feb 2005 06:52:16 -0800, Frank Gilliland
wrote:

On Sun, 13 Feb 2005 13:47:19 GMT, Lancer wrote in
:

On Sun, 13 Feb 2005 03:47:46 GMT, "U Know Who"
wrote:


"Frank Gilliland" wrote in message
m...
On Sat, 12 Feb 2005 07:18:49 -0800, Jay in the Mojave
wrote in :

Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts out
at 4 to 5 amps. Will be using a input choke power supply so that will
keep the Plate Voltage at the manufacture spec's of around 5 grand on
the plates.


You might have better luck running single-phase, then all you would
need is a small pole-pig that you can get for a couple bills in just
about any well-stocked junkyard. Otherwise you will probably have to
roll your own, which can get quite expensive (iron, copper, oil, can,
vacuum pump, etc). So how much are you planning to spend on this
transformer?


Good call, Frank. A single phase, 15-25KVA pole pig, standard
residential
has 240 volt input, and should work nicely. Incidentally, all three
phase is
240, 277, or 480. There is no more 220 or 440, unless you change the
taps or
rewind one. Much like the mis-stated 110, which is actually 120.


I don't think thats totally true Randy. I installed a BGA solder
station that required 240. The only circuit I had open was a 3 phase
circuit. Only 208 volts betwwen legs, I had to put a buck/boost
transformer on it to get the voltage up to 240 to get it to run
correctly.

Most local transmission voltages are 44 kV, 27.6 kV, 13.8 kV and 6.9
kV. A little higher than what Jay was looking for.


The voltage isn't as important as the ratio; i.e, you can run a 480
volt transformer at 240 to get a lower output. And since older pigs
came in all kinds of sizes and ratios, you never know what's available
until you look.




I just don't remember any transmission voltages being 5K or a mutiple
of it. The PCB oil in them might be fun to play with...

That wouldn't be transmission voltage, it would be distribution.

"Lancer" wrote in message
news:3gdv0193f9cafaph3ph9s3l0bgbedm24n0@2355323778 ...
On Sun, 13 Feb 2005 18:43:55 GMT, "U Know Who"
wrote:


"Lancer" wrote in message
ynews.com...
bbOn Sun, 13 Feb 2005 06:52:16 -0800, Frank Gilliland
wrote:

On Sun, 13 Feb 2005 13:47:19 GMT, Lancer wrote in
:

On Sun, 13 Feb 2005 03:47:46 GMT, "U Know Who"
wrote:


"Frank Gilliland" wrote in message
news:74ts01lkropbvpqfjvch5s16gnrrksbho9@4ax. com...
On Sat, 12 Feb 2005 07:18:49 -0800, Jay in the Mojave
wrote in :

Hello All:

Looking for a good sized power transformer.

Needs a 220 or 440 3phase input, any where from 5200 to 5500 Volts
out
at 4 to 5 amps. Will be using a input choke power supply so that
will
keep the Plate Voltage at the manufacture spec's of around 5 grand
on
the plates.


You might have better luck running single-phase, then all you would
need is a small pole-pig that you can get for a couple bills in just
about any well-stocked junkyard. Otherwise you will probably have to
roll your own, which can get quite expensive (iron, copper, oil,
can,
vacuum pump, etc). So how much are you planning to spend on this
transformer?


Good call, Frank. A single phase, 15-25KVA pole pig, standard
residential
has 240 volt input, and should work nicely. Incidentally, all three
phase is
240, 277, or 480. There is no more 220 or 440, unless you change the
taps or
rewind one. Much like the mis-stated 110, which is actually 120.


I don't think thats totally true Randy. I installed a BGA solder
station that required 240. The only circuit I had open was a 3 phase
circuit. Only 208 volts betwwen legs, I had to put a buck/boost
transformer on it to get the voltage up to 240 to get it to run
correctly.

Most local transmission voltages are 44 kV, 27.6 kV, 13.8 kV and 6.9
kV. A little higher than what Jay was looking for.


The voltage isn't as important as the ratio; i.e, you can run a 480
volt transformer at 240 to get a lower output. And since older pigs
came in all kinds of sizes and ratios, you never know what's available
until you look.




I just don't remember any transmission voltages being 5K or a mutiple
of it. The PCB oil in them might be fun to play with...

That wouldn't be transmission voltage, it would be distribution.


True..

speaking of transformers check out this link..

http://www.compfused.com/directlink/403/

Ouch.......there goes a couple million bucks!