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AC motor on an early 2001.

Posted: Mon May 25, 2020 2:52 am
by TNSirens
I heard that some of the early 2nd gen SRNs used the Model 5 AC motor. Is there any way to tell the difference of an AC only motor from a typical DC motor with AC controls?

Re: AC motor on an early 2001.

Posted: Mon May 25, 2020 11:08 am
by Chem_Boffin_6589
Fairly sure there isn't space for a Model 5 motor. I was under the asusmption that all AC-only 2001s were DC sirens powered off of an AC-DC rectifier.

Re: AC motor on an early 2001.

Posted: Mon May 25, 2020 8:32 pm
by Synther
Legend has it there are 3 480VAC 2001s at a hospital in Georgia.

Re: AC motor on an early 2001.

Posted: Tue May 26, 2020 12:11 am
by 07VFDInLCD
Intriguing, I must say.

Re: AC motor on an early 2001.

Posted: Tue May 26, 2020 2:20 am
by Snowcube
No idea if it was true or not but if it was I'd imagine an easy way to tell would be just by how the wind up sounds. With an AC motor the wind up will be noticeably different, it won't be linear unless it's single phase.
Synther wrote:
Mon May 25, 2020 8:32 pm
Legend has it there are 3 480VAC 2001s at a hospital in Georgia.
Location?

Re: AC motor on an early 2001.

Posted: Sun May 31, 2020 8:59 pm
by Kasey
Hmmmm. You could be right, however there are none in existence

Re: AC motor on an early 2001.

Posted: Mon Jun 01, 2020 12:46 am
by Synther
Kasey wrote:
Sun May 31, 2020 8:59 pm
Hmmmm. You could be right, however there are none in existence
There are/were 3 at the Central State Hospital in Georgia. I'll see about pulling up the locations.

Re: AC motor on an early 2001.

Posted: Tue Jun 02, 2020 10:37 pm
by Brendan W
Synther wrote:
Mon Jun 01, 2020 12:46 am
Kasey wrote:
Sun May 31, 2020 8:59 pm
Hmmmm. You could be right, however there are none in existence
There are/were 3 at the Central State Hospital in Georgia. I'll see about pulling up the locations.
There are only two left. They had a system of four. One was on another building and was on a water tower, both of which were demolished as far as anyone knows. I understand too that the system is not used anymore as the hospital closed in 2010.