Re: [CAD_CAM_EDM_DRO] Toroid Transformer update
Posted by
James Cullins
on 2002-12-08 06:43:42 UTC
If the secondary windings are the same voltage and amperage rating you
should be able to parallel them as long
as you keep them in phase.
Jim
should be able to parallel them as long
as you keep them in phase.
Jim
----- Original Message -----
From: "Chris L" <datac@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, December 07, 2002 10:49 PM
Subject: [CAD_CAM_EDM_DRO] Toroid Transformer update
> Well, Thanks to you guys in the group, I was able to run one of my
> Toroids loaded on the bench for about two hours today. I conclude that
> it is rated for 44v 4.5amps.I fused the transformer with a 10 amp fuse.
> The first load I connected, A calrod, was about 4 amps according to my
> clamp-on Amp meter. After about a half hour, I could not detect any heat
> by hand in the transformer, but I noticed the Amp load dropped now that
> the Calrod was hot, to just over two amps. So, I added another 1500 watt
> heater in parallel. This jumped the amp load to just under 9 amps.
> Nothing started to smoke, so I left it run. After about 15 minutes, the
> amp meter showed 4.9amps. The Transformer was showing 85 degrees. After
> an hour of this running, the temp was just a tweak over 80 degrees which
> I assume dropped because the load was lessened as things warmed up. At
> this point, I recall the AC load on the primary was just over 2 amps.
>
> So, Cool ! looks like I found my transformers. I doubt I need more than
> 3.5 amp per axis.
>
> Now, Bob Thomas indicated that I could "parallel" these three
> transformers ?? Or should I just use one per axis ?? If I did parallel
> them, I assume I could take one half of each transformers secondary, and
> simply parallel them. Not sure. I see fuses blowing already !!
>
> If you remember, these were "dual" secondarys. I guess each leg could
> put out 4.5 amps 44v, but I threw a 2 amp fuse between the two hot legs
> and it popped. Obviously I can not combine the "dual" secondarys on one
> transformer to get 9 amps, but I could run two drives off of one
> transformer....
>
> I will do some full day testing yet and get it all written down, But, I
> sure was thrilled to find out they were capable of at least 4 amps per
> leg !
>
> Thanks to all,
>
> Chris L
>
>
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Discussion Thread
Chris L
2002-12-07 20:48:35 UTC
Toroid Transformer update
Tim Goldstein
2002-12-07 20:57:17 UTC
RE: [CAD_CAM_EDM_DRO] Toroid Transformer update
Chris L
2002-12-07 21:12:37 UTC
Re: [CAD_CAM_EDM_DRO] Toroid Transformer update
James Cullins
2002-12-08 06:43:42 UTC
Re: [CAD_CAM_EDM_DRO] Toroid Transformer update
JanRwl@A...
2002-12-08 11:47:54 UTC
Re: [CAD_CAM_EDM_DRO] Toroid Transformer update
Chris L
2002-12-08 16:16:38 UTC
Re: [CAD_CAM_EDM_DRO] Toroid Transformer update
JanRwl@A...
2002-12-08 18:40:23 UTC
Re: [CAD_CAM_EDM_DRO] Toroid Transformer update