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Old Ballast #163036
04/29/07 06:16 PM
04/29/07 06:16 PM
Admin  Offline
OP
Administrator
Member
Joined: Oct 2000
Posts: 3,498
NY, USA
Quote
I thought I would post this vintage piece of equipment I pulled out of a friends house just before Christmas. when it was removed the fixture DID operate! If you notice on the sticker it was also made right here in this very same city I live in as well.

A.D (Rewired)

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Re: Old Ballast [Re: Admin] #163045
04/29/07 09:03 PM
04/29/07 09:03 PM
L
LarryC  Offline
Member
Joined: Jul 2004
Posts: 783
Winchester, NH, US
You can tell it was made for the Niagra Falls area. Who else produced 25 hertz power?

Re: Old Ballast [Re: LarryC] #163046
04/29/07 09:24 PM
04/29/07 09:24 PM
F
frenchelectrican  Offline
Member
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
Jezzz that is big sucker there i am sure that weight in pretty good in iron wise i dont recall to see the 25 HZ ballast for quite a while whistle

Merci , Marc


Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

Re: Old Ballast [Re: frenchelectrican] #163057
04/30/07 12:31 AM
04/30/07 12:31 AM
Y
yaktx  Offline
Member
Joined: Feb 2003
Posts: 288
Austin, Texas, USA
There were lots of places with 25Hz power. But driving a fluorescent at that frequency? Ouch! Gives me a headache just to imagine it!

Re: Old Ballast [Re: yaktx] #163066
04/30/07 06:11 AM
04/30/07 06:11 AM
3
32VAC  Offline
Member
Joined: Jun 2004
Posts: 202
Alice Springs, NT, Australia
Didn't the Pensylvania (spelling?) Railroad use 11000VAC 25Hz for powering those big GG-1 electric locomotives? There was a steel mill that also used 25 Hz supply for the equipment (the name Bethlehem rings a bell-on the eastern side of the U.S.)

Re: Old Ballast [Re: 32VAC] #163081
04/30/07 01:04 PM
04/30/07 01:04 PM
J
jdevlin  Offline
Member
Joined: Aug 2002
Posts: 402
welland ontario canada
Sir Adam Beck in Niagara Falls still has 25 cycle generators. They have several industrial customers on both sides of the border that use it. I think they are trying to phase it out by not renewing the contracts as they expire.

Re: Old Ballast [Re: jdevlin] #163084
04/30/07 02:25 PM
04/30/07 02:25 PM
A
Albert  Offline
Member
Joined: Aug 2006
Posts: 76
Falls Church, VA
Here's a great article, titled "The Frequency Changer Era", that discusses 25-cycle power:
http://services3.ieee.org/organizations/pes/public/2003/sep/peshistory.html

Re: Old Ballast [Re: Albert] #163113
05/01/07 08:37 AM
05/01/07 08:37 AM
P
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
If you do a search on frequency, 25Hz etc. you'll find several threads where we've discussed the use of 25Hz in the past, and the fact that a few places in the U.S. once used 50Hz (e.g. Los Angeles area up until the 1930s).

One other thing I note about that ballast is the nominal voltage rating: 118V instead of the more usual 117V.

Re: Old Ballast [Re: pauluk] #163144
05/02/07 07:28 AM
05/02/07 07:28 AM
K
Kenbo  Offline
Member
Joined: Apr 2006
Posts: 233
Scotland
I allways thought that in lighting any frequency bellow 50Hz a flicker was noticable by the human eye?


der Gro├čvater
Re: Old Ballast [Re: pauluk] #163145
05/02/07 08:13 AM
05/02/07 08:13 AM
L
LarryC  Offline
Member
Joined: Jul 2004
Posts: 783
Winchester, NH, US
Originally Posted by pauluk

One other thing I note about that ballast is the nominal voltage rating: 118V instead of the more usual 117V.


The Canadian volts are not quite as large as the US, so it takes more of them. smile

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