Re: sync motor question

[Terry Fritz <twftesla-at-uswest-dot-net>]

Hi Mark,

	Induction motors spin slightly less than 1800 (1500) 3600 (3000) RPM due
to "slip".  However, they are not sync since sync motor are less powerful
and get a lot hotter than regular motors.  They do tend to spin in relation
to the line frequency but the "rated speed of 1725 or 3450 (60Hz) is
approximate.  When you convert it, it will be exactly 1800, 3600, 1500, or
3000 RPM and the rotor will be locked at the same phase angle in relation
to the AC sine wave too.

Your motor sounds perfect for the conversion.

Cheers,

	Terry

At 08:13 PM 7/29/00 -0400, you wrote:
>hello all,
>i have a question for those in the know about sync motors. i recently
>got a blower assembly, it has a robbin myers ac motor on it, on the
>label it reads 115v 60htz 3350rpm\ 115v 50hz 2725rpm, 1/3 hp.
>my question is, since the speed is labeled different for the two
>frequencies, could this be a synchronous motor?
>it already has a very nice 5" flat belt pulley that bolts to a hub on
>the shaft, and very smooth bearings.
>i am hoping this can be a good find for a srsg?
>thank you all in advance,  marc metlicka
>