CAD CAM EDM DRO - Yahoo Group Archive

3phase & Re: 50uF + suplus motor run caps sources???

Posted by Lee Studley
on 2000-09-28 08:55:57 UTC
Thanks Darrel,

Yeah, even though it might be fun on the 4th, I agree its not a
good idea.

BTW
I've seen a figure of 50-70uF/HP for the motor 'start' caps, but I've
seen varying figures for the motor 'run' values. I know it will be
an empirical exercise to fine tune, but is there a rule-of-thumb
for these 'run' values?

Some designs exclude them all together.
I'm targeting 7.5HP and 10HP idler motor. (got a deal on 2 motors)

-Lee


-- In CAD_CAM_EDM_DRO@egroups.com, "Darrell" <dgehlsen@e...> wrote:
> From: "Lee Studley" <indigo_red@u...>
>
> If you put these on a 220 volt line, be ready for some loud
> explosions.
> For 220 I wouldn't use less than 400 volt rated.
> Darrell
>
> >
> > I have 20 6uF run caps, but they are only 236vac rated.
> Is
> > this cutting it too close? Takes up alot of space too.
> Luckily they
> > only cost me $19 total. Anyone need some if they dont work
> out?
> >
> > I'm using the design that has a potential relay for
> starting.
> > Already got that from Grainger.
> >
> > Thanks in advance for any input.
> >
> >
> >
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Discussion Thread

Lee Studley 2000-09-27 20:38:29 UTC 50uF + suplus motor run caps sources??? Lee Studley 2000-09-27 20:39:17 UTC 50uF + suplus motor run caps sources??? Ken Thompson 2000-09-27 20:58:44 UTC RE: [CAD_CAM_EDM_DRO] 50uF + suplus motor run caps sources??? Lee Studley 2000-09-27 21:32:14 UTC Re: 50uF + suplus motor run caps sources??? Ken Thompson 2000-09-27 22:06:22 UTC RE: [CAD_CAM_EDM_DRO] Re: 50uF + suplus motor run caps sources??? Lee & Chris studley 2000-09-28 06:58:53 UTC RE: [CAD_CAM_EDM_DRO] Re: 50uF + suplus motor run caps sources??? Darrell 2000-09-28 08:29:31 UTC Re: [CAD_CAM_EDM_DRO] 50uF + suplus motor run caps sources??? Lee Studley 2000-09-28 08:55:57 UTC 3phase & Re: 50uF + suplus motor run caps sources??? Darrell 2000-09-28 15:38:49 UTC Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? John Craddock 2000-09-29 16:24:43 UTC RE: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? "Grif" w. keith griffith 2000-09-29 16:40:11 UTC RE: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? Lee Studley 2000-09-29 16:43:34 UTC 3phase & Re: 50uF + suplus motor run caps sources??? Lee Studley 2000-09-29 17:29:08 UTC 3phase & Re: 50uF + suplus motor run caps sources??? John Craddock 2000-09-29 17:55:37 UTC RE: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? Dan Falck 2000-09-29 18:11:30 UTC Thermwood trip Lee & Chris studley 2000-09-29 19:15:33 UTC Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? Darrell 2000-09-29 21:00:56 UTC Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? Lee & Chris studley 2000-09-29 21:39:20 UTC Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? Darrell 2000-09-29 22:36:26 UTC Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? ptengin@a... 2000-09-30 01:56:28 UTC Re: [CAD_CAM_EDM_DRO] Thermwood trip "Grif" w. keith griffith 2000-10-02 08:12:24 UTC Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? Lee & Chris studley 2000-10-02 08:48:26 UTC Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? Lee & Chris studley 2000-10-02 08:55:46 UTC FYI: Home Depot Good buy on conns/cables 20' 3Phase wanliker@a... 2000-10-02 09:01:06 UTC Re: [CAD_CAM_EDM_DRO] 3phase & Re: 50uF + suplus motor run caps sources??? cnc002@a... 2000-10-02 13:28:57 UTC Re: [CAD_CAM_EDM_DRO] FYI: Home Depot Good buy on conns/cables 20' 3Phase ballendo@y... 2000-10-02 21:49:25 UTC Re: FYI: Home Depot Good buy on conns/cables 20' 3Phase