[modeleng] Re: OMES Cold Saw MEC 350
- From: "R.L. Roebuck" <rlr20@xxxxxxxxxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Sat, 10 Jul 2010 13:24:21 +0100 (BST)
Hi there John,
I have to confess that I am not that familiar with the more traditional
methods of providing a three speed three phase motor (though I might be
able to hazzard a guess), but if the single speed three phase motors are
anything to go by, I would suspect that there are not that many different
speeds that it can possibly have been (ie for a single speed motor,
running of 50Hz, with no cunning electronics, you are constrained to just
under:
3000rpm/1=3000rpm,
3000rpm/2=1500rpm,
3000rpm/3=1000rpm
etc
...though the above three speeds are the most common (after that the
number of seperate windings in the motor gets a bit prohibitive, though
not impossible).
Can anyone with more knowledge than I on this specific point shed any
light on this?
Having identified this point, motor power usually scales rougly with motor
volume, so if you have an idea how large the main part of the motor was,
you might be able to come up with a reasonable estimate of what the motor
HP rating was.
Yours,
Rich.
On Sat, 10 Jul 2010, jfsbuckley@xxxxxxxxxxxxxxxx wrote:
>
>
> Thank you for your reply Alan. I have not been able to find the
> missing information locally, hence my question to the members of this
> group.
>
> Regards,
>
> John
>
> On Sat 10/07/10 6:34 AM , "Alan Stepney" alan@xxxxxxxxxxxxxxxx sent:
> As far as I can see, this make was not sold in the UK. At least, not
> under
> that name although it may well have been sold under a different name.
>
> Alan
> ----- Original Message -----
> From: "John Buckley"
> To:
> Sent: Wednesday, July 07, 2010 6:45 AM
> Subject: [modeleng] OMES Cold Saw MEC 350
>
> Does anyone within the group have access to a model of the above cold
> saw?
>
> I sent the motor off mine away for repairs and they mob I sent it to
> have
> finally admitted that they have lost the motor.
>
> The motor was a three phase three speed with an extended armature
> shaft
> which had an eccentric drive for the coolant pump.
>
> The information that I really need are the rpm of the three speeds as
> well
> as HP rating of the motor so I know what I am chasing.
>
> Thanks in advance,
>
> John
>
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