[GreenKeys] Model 28 Motor Trivia

[Bob Camp]

Hi

Well I can explain part of the listing. Toronto got 25 Hz at the same 
time as Western New York State. Edison put in 25 Hz generation at 
Niagra Falls and then strung lines out from there. By the end of the 
1930's most of that stuff was gone. There still are industrial 
customers hooked up to the original generators even today. I suppose 
it's possible that one or more of them are were in Toronto. Certainly 
standard wall outlets both there and any part of British Columbia I 
have ever been to are all 60 Hz today.

The Panama Canal Zone makes sense because it went in very early in the 
whole scheme of things. Edison and GE had a *big* involvement with the 
project so of course they would have put in "their" frequency instead 
of Westinghouse's. It would be interesting to find out if anything down 
there runs off of 25 Hz any more or at least did in the 1950's and 
1960's. If so then that might be why the military would want to have a 
25 Hz model 28 motor. We certainly had a major military presence down 
there back then.

Now if I can just post this to the right list ....

	Take Care!

		Bob Camp
		KB8TQ



On Jul 2, 2004, at 11:48 PM, WA5CAB at cs.com wrote:

> TM 11-487 (10/44) contains a long table listing voltages and 
> frequencies
> (including DC) found in various countries and major cities around the 
> world.  25
> CPS is listed for Toronto, parts of British Columbia, Nice, the Panama 
> Canal
> Zone and parts of China.  Also as an alternate for India but no 
> specific
> locations given.  Part of Italy and part of their holdings in North 
> Africa are 40 to
> 45 CPS.  The rest is 50, as is most of the rest of Europe.  Gibralter 
> is given
> as 110 VAC 76 CPS (plus 440 VDC) and Malta as 105 VAC 100 CPS.  North 
> and
> Central America, except for parts of Canada and the Canal Zone is 60.  
> Guam, the
> P.I. and the Society Islands listed as 60 CPS, Samoa and most of S.E. 
> Asia
> (French Indochina) as 50.  But no 25 CPS listings for the Pacific.
>
> As I dimly recall, the Canal was being built just as DC distribution 
> systems
> were beginning to fall from favor and ended up 25 CPS.  
> Electrification in the
> Pacific came later and must have gone 50 or 60 depending upon who was 
> doing
> the work (Americans or Europeans).
>
> I've been missing a lot of mail lately from Al's lists so I didn't see 
> the
> original post.  But it probably had nothing to do with M28 motors, as 
> I can't
> think of any reason any 25 CPS ones would ever have been built.  
> Unless the
> Canal Zone didn't convert until later in the 50's.  Could have 
> happened.
>
> In a message dated 7/2/2004 10:04:46 PM Central Daylight Time,
> sekelya at ameritech.net writes:
>> as I recall it back in the days of WWII the pacific had Island power
>> systems that were 25 cycles  who knows how long those power plants 
>> were still in
>> operation...
>
> Robert Downs - Houston
> <http://www.wa5cab.com> (Web Store)
> <wa5cab at cs.com> (Primary email)
> <wa5cab at houston.rr.com> (Backup email)
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