Re: Higher Mains Frequency

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

Original poster: "Jim Lux by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

All Electronics used (and may still do) have 400 Hz variacs...Just don't try
to operate them at 120V at 60 Hz...

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, June 19, 2003 8:35 PM
Subject: Re: Higher Mains Frequency


 > Original poster: "Ed Phillips by way of Terry Fritz <teslalist-at-qwest-dot-net>"
<evp-at-pacbell-dot-net>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: "WIZZARD . by way of Terry Fritz
<teslalist-at-qwest-dot-net>"
 > <pbobyk-at-hotmail-dot-com>
 >  >
 >  > I believe aircraft use 400 Hz distribution systems so the transformers
can
 >  > be lighter.
 >
 > Correct.  Some have used other frequencies as well; I designed the
 > radar in the F-106 (long extinct) and we used 1600 cycles there.  Space
 > station uses even higher I believe.
 >
 > Sixty Hz tranformers will work fine on 400~ if you take into account
 > the higher leakage reactance.
 >
 > Not long after WW2 some surplus stores were trying to sell 400~
 > transformers with the statement "conservatively rated at  400~" with the
 > strong implication that would work on 60~ just as well.  Caveat
 > emptor...
 >
 > Ed
 >
 >