Re: NST in oil design to help prevent NST failures

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Dr. Resonance by way of Terry Fritz <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>


Actually they are.  No one wants to stop their normal mfgring to make a
small run.  90% of all companies we have talked to just find this "not cost
effective" and will not consider doing it.

In theory it sounds easy, but in practice, it isn't.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, June 14, 2003 4:30 PM
Subject: Re: NST in oil design to help prevent NST failures


 > Original poster: "Crow Leader by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<tesla-at-lists.symmetric-dot-net>
 >
 > Sent: Saturday, June 14, 2003 11:47 AM
 > Subject: NST in oil design to help prevent NST failures
 >
 >
 >  > Original poster: "Dr. Resonance by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>
 >
 > [cut]
 >
 >  > I'm trying to optimize the design to keep the costs affordable for
members
 >  > of this list.  Will keep you posted.  The bobbins and the windings
aren't
 >  > the problem --- it's optimizing laminated core costs to make it all
work
 >  > out.
 >
 > What is the problem you are having? While standard EI laminations probably
 > lack the creepage you want for a several kVA transformer, there are choke
 > cores in that approximate size, maybe even having legs sawed off a three
 > phase core might work, since they have more space for the core. I can
 > imagine custom stampings would be a hassle and costly in a small run.
 >
 > KEN
 >
 >