No, they are regular EI cores. Plain transformers used to supply control power
for relays, etc. on MV busses. Not high Z. My HV wdg measures(DC) 6.8 ohms,
LV 0.1 ohms with a Fluke 87. Here is my nameplate info but they will all be
different. They have pictures for most of them I think.
5kVA 60CPS 1 PH Type E17046
H1-H2 2300V X1-X7 280V 17.8A
GE 193A6778 P38
Electro Engineering Works San Leandro, California
I think mine is 40-50 years (no Zipcode) old but in good shape. We have 4160V
switchgear that old in service today. This stuff is built to last.
Brad AB0YD
----- Original Message -----
From: Carl<mailto:km1h@jeremy.mv.com>
To: B Osburn<mailto:plantrunner5@msn.com> ;
amps@contesting.com<mailto:amps@contesting.com>
Sent: Monday, February 13, 2012 8:13 PM
Subject: Re: [Amps] Source for plate xfrmer
Are those suitable for ham amp use or do they have old style high impedance
(and DC resistance) windings that are not that suitable for a big C only filter?
IE: Pole Pigs
Carl
KM1H
----- Original Message -----
From: B Osburn<mailto:plantrunner5@msn.com>
To: Al Kozakiewicz<mailto:akozak@hourglass.com> ; Steve
Bookout<mailto:steve@dx4win.com> ;
amps@contesting.com<mailto:amps@contesting.com> ;
Carl<mailto:km1h@jeremy.mv.com>
Sent: Monday, February 13, 2012 9:52 PM
Subject: Re: [Amps] Source for plate xfrmer
I don't think this is what you are looking for but Monster Controls has
used control power XFMRs. I paid $950 for a 5kVA 240/2400V + Shipping. They
only come in common medium voltage (MV) switchgear voltages 2400, 4160, 6900V.
Sizes range from 0.75kVA to 5kVA.
Brad AB0YD
http://www.monster4controls.com/parts/cat/control%20power%20transformer/<http://www.monster4controls.com/parts/cat/control%20power%20transformer/>
----- Original Message -----
From: Carl<mailto:km1h@jeremy.mv.com>
To: Al Kozakiewicz<mailto:akozak@hourglass.com> ; Steve
Bookout<mailto:steve@dx4win.com> ;
amps@contesting.com<mailto:amps@contesting.com>
Sent: Monday, February 13, 2012 4:55 PM
Subject: Re: [Amps] Source for plate xfrmer
And you pay thru the nose. Id check with Heyboer Transformer if you Dont
have to have a C-Core.
Carl
KM1H
----- Original Message -----
From: "Al Kozakiewicz" <akozak@hourglass.com<mailto:akozak@hourglass.com>>
To: "Steve Bookout" <steve@dx4win.com<mailto:steve@dx4win.com>>;
<amps@contesting.com<mailto:amps@contesting.com>>
Sent: Monday, February 13, 2012 1:38 PM
Subject: Re: [Amps] Source for plate xfrmer
> Unless something changed, Harbach Electronics now makes/sells the Dahl
> transformers.
>
> Al
> AB2ZY
>
> ________________________________________
> From: amps-bounces@contesting.com<mailto:amps-bounces@contesting.com>
[amps-bounces@contesting.com] On Behalf
> Of Steve Bookout [steve@dx4win.com]
> Sent: Monday, February 13, 2012 1:35 PM
> To: amps@contesting.com<mailto:amps@contesting.com>
> Subject: [Amps] Source for plate xfrmer
>
> Hello all,
>
> Where do you look for a new HV plate transformer these days?
>
> I understand Peter Dahl is no longer around.
>
> I'm looking for 3000 VAC secondary @ 1+ amp CCS.
>
> TIA
>
> 73 de Steve, NR4M
>
> _______________________________________________
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>
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>
>
> -----
> No virus found in this message.
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>
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