UTC PA-307

[Detroit47]

I have an UTC PA-307 transformer and no information on it. I looked thru the bunker and came up with a zero. Does anybody have the spec's on it.

Thanks John N8QPC

[KE6DF]

Look up CG-307 -- it's same only slightly different shape.

3500 3000 2400 - 0 - 2400 3000 3500  at  300ma

I have a CG-308 which is the same only 500 ma.

Dave

[Detroit47]

It is ahuge transformer for only 300 mills. I'd say at least 70 lbs.

John N8QPC

[Opcom]

These monsters are all potted as well IIRC incl. the -309, the 1A King!

[Detroit47]

So unless I am wrong if I set it up center tap full wave, With a choke input I'm looking at about 840 watts of power out of that thing.
3500 X .8 = 2800     2800 x .3= 840  Unless I have my head up my ____

John

[KE6DF]

So unless I am wrong if I set it up center tap full wave, With a choke input I'm looking at about 840 watts of power out of that thing.
3500 X .8 = 2800     2800 x .3= 840  Unless I have my head up my ____

John

That's sounds right. Probably a little higher voltage than 2800.

And it's a CCS transformer. So it will do that all day plus weekends rain or shine.

Those big CG/PA transformers are very conservatively rated and high quality.

[W2VW]

As you probably already know, do not use a full wave bridge. It will ruin the xfmr.

[Detroit47]

All them old peices of iron were made for ct full wave with L input.

Thanks John

[K3YA]

I have a CG-306, a slightly lower voltage version, in my 4-1000 GG linear.  It's connected to a full wave bridge, capacitor input supply providing about 6 KV.  It's been running about 15 years now without problem, so the center tap must be pretty well insulated. 

[KE6DF]

I have a CG-306, a slightly lower voltage version, in my 4-1000 GG linear.  It's connected to a full wave bridge, capacitor input supply providing about 6 KV.  It's been running about 15 years now without problem, so the center tap must be pretty well insulated. 

Is yours a CG306W?

The ones with the W suffix were designed to work in a bridge circuit.

There is a 1970 UTC catalog out there on the web that states this and show both part numbers.

Dave