6.67kva 120v primary, 120v secondary
I'd prefer 240v primary, but the nice thing about this one is that
it's cheap (aside from the shipping). I don't yet have the weight,
I am guessing from the weight of similarly-rated transformers.
He's got three, and he said they are free for pickup - but
With the price of copper these days... I assume from shipping that this is
copper and probably potted.
Is this intended for isolation or what?
Rayh
On Wed, 17 Oct 2007 01:00:28 -0700 (PDT), Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net said:
6.67kva 120v primary, 120v
Mark Pictor wrote:
6.67kva 120v primary, 120v secondary
I'd prefer 240v primary, but the nice thing about this one is that
it's cheap (aside from the shipping). I don't yet have the weight,
I am guessing from the weight of similarly-rated transformers.
6.67kVA at 120V is 55 amps. The inrush
Hi,
Which version of EMC2 is on the Live Ubuntu CD? Where is the version
info available? I looked but could not find anything on this...
Thanks,
Clint
-
This SF.net email is sponsored by: Splunk Inc.
Still grepping
The latest version of the Live CD includes either 2.1.6 or 2.1.7, I'm
not sure which.
There are several ways to find the version of emc:
* If you use AXIS as your user interface, Help About shows the version
number
* If you start emc from the terminal window, the version is printed
* If you
Mark Pictor wrote:
6.67kva 120v primary, 120v secondary
I'd prefer 240v primary, but the nice thing about this one is that
it's cheap (aside from the shipping). I don't yet have the weight,
I am guessing from the weight of similarly-rated transformers.
What the HE** do you need a 6.67 KVA
Jon Elson wrote:
Mark Pictor wrote:
6.67kva 120v primary, 120v secondary
What the HE** do you need a 6.67 KVA transformer for?
Mark already said that the transformers are at least twice as
big has he really needs.
But they are free (other than shipping), so he's asking us what
gotchas there
I knew there would be inrush current to the capacitors, but I
didn't realize that the transformer, in and of itself, would have
an inrush current. Guess that shows how much I know!
I was planning to use one or more motor run capacitors to limit
inrush current - use a relay in parallel with the
I don't have my figures, but I remember looking for a 3kva
isolation transformer before. This is a little more than twice
that size, as I mentioned in the OP. Now that I think about it, my
3kva figure was probably conservative.
I hadn't thought of the scrap yard. That would probably be a lot
At 01:17 PM 10/17/2007, you wrote:
I knew there would be inrush current to the capacitors, but I
didn't realize that the transformer, in and of itself, would have
an inrush current. Guess that shows how much I know!
I was planning to use one or more motor run capacitors to limit
inrush current -
Thanks again Jon and Chris. What should have been obvious turns out to
be the problem. Graphing the encoder index shows random pulses mixed in
with the regular pulses. I really did not want this to be the problem
since I had already gone through fixing another issue with this encoder.
I guess
On Wed, Oct 17, 2007 at 12:35:12PM -0700, Kirk Wallace wrote:
Previously, the dialog box would complain, but as soon as I got a valid
number entered it would stop complaining. Now, as soon as the error
message appears, it won't go away until I close the dialog box and start
over. I have
Chris Radek wrote:
On Wed, Oct 17, 2007 at 12:35:12PM -0700, Kirk Wallace wrote:
Previously, the dialog box would complain, but as soon as I got a valid
number entered it would stop complaining. Now, as soon as the error
message appears, it won't go away until I close the dialog box and start
Thanks for the info Jeff.
I have version 2.0.?? so I'll download a new CD and start over. My
machine computer won't connect to the internet so I have to use another
computer to put things on a CD to update anything. (This means taking my
laptop to a wifi hot spot or borrowing a computer and
Mark Pictor wrote:
I knew there would be inrush current to the capacitors, but I
didn't realize that the transformer, in and of itself, would have
an inrush current. Guess that shows how much I know!
Yup. It varies with the transformer design, and if you end up
using a 240 V primary
Kirk Wallace wrote:
Thanks again Jon and Chris. What should have been obvious turns out to
be the problem. Graphing the encoder index shows random pulses mixed in
with the regular pulses. I really did not want this to be the problem
since I had already gone through fixing another issue with
On 10/18/07, Jon Elson [EMAIL PROTECTED] wrote:
Kirk Wallace wrote:
Thanks again Jon and Chris. What should have been obvious turns out to
be the problem. Graphing the encoder index shows random pulses mixed in
with the regular pulses. I really did not want this to be the problem
since I
i was thinking the light bulb idea when i read it, i remember reading an
article on a homebuilt 1000 watt audio amp, he did that because of the
inrush current tripping a breaker. i was just wondering how many bulbs in
parallel it would take to handle the current without blowing instantly?
On Thu, 2007-10-18 at 00:17 -0400, Jim Coleman wrote:
On 10/18/07, Jon Elson [EMAIL PROTECTED] wrote:
Kirk Wallace wrote:
Thanks again Jon and Chris. What should have been obvious
turns
... snip
interference sources like motor-VFD cables and any other that
On Wed, 2007-10-17 at 23:02 -0500, Jon Elson wrote:
Kirk Wallace wrote:
Thanks again Jon and Chris. What should have been obvious turns out to
... snip
trouble shooting for a while.
Check the grounding carefully. The best is to not have the
encoder grounded to the machine frame, but
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