A question about coil winding - Page 7

 

The heat disapation is not a big feature of the varnish but nevertheless, is
there.
Varnishing the coils before placement is not really possible as the coils
become stiff and still need to be bent into place in the laminations.
Trouble is wih varnishing after is the clean up of the laminations becomes a
pain. Lots of fishpaper /Hytex lamination covers and wedges usually locks
the windings down enough without varnish but the varnish glues it all
together so vibration doesn't result in a flying piece of paper inside.

Josepi wrote:


When you are winding coils, you most certainly can brush or spray the
Glyptal on each layer before starting the next one. Take it slow and you
won't even get your fingers covered like I did.

Secondarily, I am not aware of ANY varnish type coatings that help to
carry heat away from the wire. Every coating I am aware of acts as an
insulation to some degree. Some web sites talk of 'special resins' with
certain fillers which help in heat conductivity. I don't know anything
about them.

Centrifugal force may be a bigger danger than vibration. Now, having
said that, there MAY be a particular RPM where a resonance is set up in
the coils. Thee should be a way of testing for that before any sort of
mass production takes place.



mike




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On Dec 19, 8:38 am, "The real Edmond H.  Wollmann"

English...heehee....Now look at the guy above^  He said: "heat disapation".

here, how can you let an alien beat you huh?

They're only poor Yanks.  They spell lots of word wrongly in America.

 

On Sat, 19 Dec 2009 10:00:00 -0800 (PST), harry


English...heehee....Now look at the guy above^  He said: "heat disapation".

born here, how can you let an alien beat you huh?

Should be 'words', actually.

JF

 

John Fields wrote:


Prepositions are not your strong point, are they John?



mike

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