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Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

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  • Stephen G. Myers
    Where was the Glenville power plant located? Steve myers . On Mon, 14 Apr 2003 19:22:13 -0400 Malcolm Horton writes: When the interurban
    Message 1 of 13 , Apr 14, 2003
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      Where was the Glenville power plant located?
       
      Steve myers
       
      .
       
      On Mon, 14 Apr 2003 19:22:13 -0400 "Malcolm Horton" <mdhorton@...> writes:
      When the interurban line from Gloversville to Schenectady was built, they also built the Tribes Hill power generating station which burned coal and made 25 cycles per second AC power. They also installed 25 CPS synchronous converters in Johnstown, Amsterdam and Glenville. Not too many years later, An AC transmission line was built from a hydro power generating station at Inghams Mills (on the east Canada creek) to Tribes Hill. Thereafter, the railroad used hdropower and put the Tribes Hill plant on standby. Since Inghams mills is a 60 cycle per second generating station, either one of two things must have happened.
       
      1) Inghams Mills had 25 CPS generators just for serving the FJ&G load or
       
      2) The FJ&G purchased and installed 60 CPS synchronous converters to make their direct current when using Inghams Mills 60 CPS AC power.
       
      If the latter, in order to be able to use Tribes Hill generated power as a back-up, the FJ&G would have had to retain their original 25 CPS synchronous converters too.
       
      A third possibility would be that a frequency converting motor-generator set (or sets) were installed in the Tribes Hill plant to convert 60 CPS power from Inghams to 25 CPS to power the original synchronous converters.
       
      We know that eventually the only synchronous converters left were 60 Cycles per second.
       
      Does anyone know how and when they made the transition from 25 CPS to 60 CPS?
      Perhaps the Bob Bedford clipping file has the answers.
       
      Malcolm Horton


      Visit Gino's Railpage at http://www.fjgrr.com
      Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


      Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
       
    • Malcolm Horton
      The Glenville power plant was just west of washout road and contained one 300 kilowatt synchronous converter in its latter days. The trolley line crossed under
      Message 2 of 13 , Apr 14, 2003
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        The Glenville power plant was just west of washout road and contained one 300 kilowatt synchronous converter in its latter days. The trolley line crossed under the NYC railroad and over washout road at grade. The station was fed by a high voltage AC transmission line on top of the same poles that supported the trolley wire. In its latter days it was unattended. The converter started automatically when low voltage was detected for a few minutes. It shut down automatically when low output current was detected for a few minutes.
         
        Malcolm Horton
        ----- Original Message -----
        Sent: Monday, April 14, 2003 10:24 PM
        Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

        Where was the Glenville power plant located?
         
        Steve myers
         
        .
         
        On Mon, 14 Apr 2003 19:22:13 -0400 "Malcolm Horton" <mdhorton@...> writes:
        When the interurban line from Gloversville to Schenectady was built, they also built the Tribes Hill power generating station which burned coal and made 25 cycles per second AC power. They also installed 25 CPS synchronous converters in Johnstown, Amsterdam and Glenville. Not too many years later, An AC transmission line was built from a hydro power generating station at Inghams Mills (on the east Canada creek) to Tribes Hill. Thereafter, the railroad used hdropower and put the Tribes Hill plant on standby. Since Inghams mills is a 60 cycle per second generating station, either one of two things must have happened.
         
        1) Inghams Mills had 25 CPS generators just for serving the FJ&G load or
         
        2) The FJ&G purchased and installed 60 CPS synchronous converters to make their direct current when using Inghams Mills 60 CPS AC power.
         
        If the latter, in order to be able to use Tribes Hill generated power as a back-up, the FJ&G would have had to retain their original 25 CPS synchronous converters too.
         
        A third possibility would be that a frequency converting motor-generator set (or sets) were installed in the Tribes Hill plant to convert 60 CPS power from Inghams to 25 CPS to power the original synchronous converters.
         
        We know that eventually the only synchronous converters left were 60 Cycles per second.
         
        Does anyone know how and when they made the transition from 25 CPS to 60 CPS?
        Perhaps the Bob Bedford clipping file has the answers.
         
        Malcolm Horton


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      • Stephen G. Myers
        Is there a foundation or any remains at the Glenville site? Steve . On Mon, 14 Apr 2003 22:45:35 -0400 Malcolm Horton writes: The
        Message 3 of 13 , Apr 15, 2003
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          Is there a foundation or any remains at the Glenville site?
           
          Steve
           
          .
           
          On Mon, 14 Apr 2003 22:45:35 -0400 "Malcolm Horton" <mdhorton@...> writes:
          The Glenville power plant was just west of washout road and contained one 300 kilowatt synchronous converter in its latter days. The trolley line crossed under the NYC railroad and over washout road at grade. The station was fed by a high voltage AC transmission line on top of the same poles that supported the trolley wire. In its latter days it was unattended. The converter started automatically when low voltage was detected for a few minutes. It shut down automatically when low output current was detected for a few minutes.
           
          Malcolm Horton
          ----- Original Message -----
          Sent: Monday, April 14, 2003 10:24 PM
          Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

          Where was the Glenville power plant located?
           
          Steve myers
           
          .
           
          On Mon, 14 Apr 2003 19:22:13 -0400 "Malcolm Horton" <mdhorton@...> writes:
          When the interurban line from Gloversville to Schenectady was built, they also built the Tribes Hill power generating station which burned coal and made 25 cycles per second AC power. They also installed 25 CPS synchronous converters in Johnstown, Amsterdam and Glenville. Not too many years later, An AC transmission line was built from a hydro power generating station at Inghams Mills (on the east Canada creek) to Tribes Hill. Thereafter, the railroad used hdropower and put the Tribes Hill plant on standby. Since Inghams mills is a 60 cycle per second generating station, either one of two things must have happened.
           
          1) Inghams Mills had 25 CPS generators just for serving the FJ&G load or
           
          2) The FJ&G purchased and installed 60 CPS synchronous converters to make their direct current when using Inghams Mills 60 CPS AC power.
           
          If the latter, in order to be able to use Tribes Hill generated power as a back-up, the FJ&G would have had to retain their original 25 CPS synchronous converters too.
           
          A third possibility would be that a frequency converting motor-generator set (or sets) were installed in the Tribes Hill plant to convert 60 CPS power from Inghams to 25 CPS to power the original synchronous converters.
           
          We know that eventually the only synchronous converters left were 60 Cycles per second.
           
          Does anyone know how and when they made the transition from 25 CPS to 60 CPS?
          Perhaps the Bob Bedford clipping file has the answers.
           
          Malcolm Horton


          Visit Gino's Railpage at http://www.fjgrr.com
          Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


          Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
           


          Visit Gino's Railpage at http://www.fjgrr.com
          Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


          Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.


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          Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


          Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
           
        • Malcolm Horton
          I don t know if any foundations remain. The last time I went up Washout road, there was a chain and a keep out sign across the former right of way leading
          Message 4 of 13 , Apr 15, 2003
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            I don't know if any foundations remain. The last time I went up Washout road, there was a chain and a keep out sign across the former right of way leading towards the substation.
             
            Mal Horton
            ----- Original Message -----
            Sent: Tuesday, April 15, 2003 8:22 AM
            Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

            Is there a foundation or any remains at the Glenville site?
             
            Steve
             
            .
             
            On Mon, 14 Apr 2003 22:45:35 -0400 "Malcolm Horton" <mdhorton@...> writes:
            The Glenville power plant was just west of washout road and contained one 300 kilowatt synchronous converter in its latter days. The trolley line crossed under the NYC railroad and over washout road at grade. The station was fed by a high voltage AC transmission line on top of the same poles that supported the trolley wire. In its latter days it was unattended. The converter started automatically when low voltage was detected for a few minutes. It shut down automatically when low output current was detected for a few minutes.
             
            Malcolm Horton
            ----- Original Message -----
            Sent: Monday, April 14, 2003 10:24 PM
            Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

            Where was the Glenville power plant located?
             
            Steve myers
             
            .
             
            On Mon, 14 Apr 2003 19:22:13 -0400 "Malcolm Horton" <mdhorton@...> writes:
            When the interurban line from Gloversville to Schenectady was built, they also built the Tribes Hill power generating station which burned coal and made 25 cycles per second AC power. They also installed 25 CPS synchronous converters in Johnstown, Amsterdam and Glenville. Not too many years later, An AC transmission line was built from a hydro power generating station at Inghams Mills (on the east Canada creek) to Tribes Hill. Thereafter, the railroad used hdropower and put the Tribes Hill plant on standby. Since Inghams mills is a 60 cycle per second generating station, either one of two things must have happened.
             
            1) Inghams Mills had 25 CPS generators just for serving the FJ&G load or
             
            2) The FJ&G purchased and installed 60 CPS synchronous converters to make their direct current when using Inghams Mills 60 CPS AC power.
             
            If the latter, in order to be able to use Tribes Hill generated power as a back-up, the FJ&G would have had to retain their original 25 CPS synchronous converters too.
             
            A third possibility would be that a frequency converting motor-generator set (or sets) were installed in the Tribes Hill plant to convert 60 CPS power from Inghams to 25 CPS to power the original synchronous converters.
             
            We know that eventually the only synchronous converters left were 60 Cycles per second.
             
            Does anyone know how and when they made the transition from 25 CPS to 60 CPS?
            Perhaps the Bob Bedford clipping file has the answers.
             
            Malcolm Horton


            Visit Gino's Railpage at http://www.fjgrr.com
            Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


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          • Stephen G. Myers
            Here s the next question. Was the sub station there during the great flood that took out the NYC bridge and gave Washout road it s name? Steve Myers . On Tue,
            Message 5 of 13 , Apr 15, 2003
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              Here's the next question.  Was the sub station there during the great flood that took out the NYC bridge and gave Washout road it's name?
               
              Steve Myers
               
              .
               
              On Tue, 15 Apr 2003 09:18:40 -0400 "Malcolm Horton" <mdhorton@...> writes:
              I don't know if any foundations remain. The last time I went up Washout road, there was a chain and a keep out sign across the former right of way leading towards the substation.
               
              Mal Horton
              ----- Original Message -----
              Sent: Tuesday, April 15, 2003 8:22 AM
              Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

              Is there a foundation or any remains at the Glenville site?
               
              Steve
               
              .
               
              On Mon, 14 Apr 2003 22:45:35 -0400 "Malcolm Horton" <mdhorton@...> writes:
              The Glenville power plant was just west of washout road and contained one 300 kilowatt synchronous converter in its latter days. The trolley line crossed under the NYC railroad and over washout road at grade. The station was fed by a high voltage AC transmission line on top of the same poles that supported the trolley wire. In its latter days it was unattended. The converter started automatically when low voltage was detected for a few minutes. It shut down automatically when low output current was detected for a few minutes.
               
              Malcolm Horton
              ----- Original Message -----
              Sent: Monday, April 14, 2003 10:24 PM
              Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

              Where was the Glenville power plant located?
               
              Steve myers
               
              .
               
              On Mon, 14 Apr 2003 19:22:13 -0400 "Malcolm Horton" <mdhorton@...> writes:
              When the interurban line from Gloversville to Schenectady was built, they also built the Tribes Hill power generating station which burned coal and made 25 cycles per second AC power. They also installed 25 CPS synchronous converters in Johnstown, Amsterdam and Glenville. Not too many years later, An AC transmission line was built from a hydro power generating station at Inghams Mills (on the east Canada creek) to Tribes Hill. Thereafter, the railroad used hdropower and put the Tribes Hill plant on standby. Since Inghams mills is a 60 cycle per second generating station, either one of two things must have happened.
               
              1) Inghams Mills had 25 CPS generators just for serving the FJ&G load or
               
              2) The FJ&G purchased and installed 60 CPS synchronous converters to make their direct current when using Inghams Mills 60 CPS AC power.
               
              If the latter, in order to be able to use Tribes Hill generated power as a back-up, the FJ&G would have had to retain their original 25 CPS synchronous converters too.
               
              A third possibility would be that a frequency converting motor-generator set (or sets) were installed in the Tribes Hill plant to convert 60 CPS power from Inghams to 25 CPS to power the original synchronous converters.
               
              We know that eventually the only synchronous converters left were 60 Cycles per second.
               
              Does anyone know how and when they made the transition from 25 CPS to 60 CPS?
              Perhaps the Bob Bedford clipping file has the answers.
               
              Malcolm Horton


              Visit Gino's Railpage at http://www.fjgrr.com
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              Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
               
            • Malcolm Horton
              I don t know when the great flood occurred but if it was during the time the FJ&G trolley line existed, then the substation was there. As I recall the
              Message 6 of 13 , Apr 15, 2003
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                I don't know when the great flood occurred but if it was during the time the FJ&G trolley line existed, then the substation was there. As I recall the right-of-way going west from Washout Road is climbing upward rather steeply which would make it improbable that the high water would have reached the substation.
                 
                Washout Road and the small creek that drains from the north both share the same opening underneath the railroad embankment. If that opening had originally been too small, it is understandable why abnormally high water might have washed out the railroad roadbed. Now that the underpass is much wider, it will probably never be a problem again.
                 
                The FJ&G electric line bridged this creek as the tracks curved to go under the railroad. This bridge couldn't have had much clearance above the water because the cars had to clear the ceiling of the railroad overpass. Trees and other floating debris could possibly have clotted against the upstream side of the FJ&G bridge during flood conditions. I wonder if this had anything to do with the washout? A lot depends on whether the FJ&G was there at all at the time of the big washout.
                 
                Getting back to the subject of 25 and 60 cycles per second, I have just attended a lecture by a man who once worked for the New York Power and Light Co. He recalls hearing it said that NYP&L had 25, 40 and 60 cycle per second customers in Amsterdam. This makes it more likely that the Inghams Mills generating station had 25 cycle generators which served both the FJ&G and some of these customers. (The 40 and 60 CPS would probably have come from the east where both of those frequencies were known to have existed).
                 
                Malcolm Horton 
                ----- Original Message -----
                Sent: Tuesday, April 15, 2003 9:54 AM
                Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

                Here's the next question.  Was the sub station there during the great flood that took out the NYC bridge and gave Washout road it's name?
                 
                Steve Myers
                 
                .
                 
                On Tue, 15 Apr 2003 09:18:40 -0400 "Malcolm Horton" <mdhorton@...> writes:
                I don't know if any foundations remain. The last time I went up Washout road, there was a chain and a keep out sign across the former right of way leading towards the substation.
                 
                Mal Horton
                ----- Original Message -----
                Sent: Tuesday, April 15, 2003 8:22 AM
                Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

                Is there a foundation or any remains at the Glenville site?
                 
                Steve
                 
                .
                 
                On Mon, 14 Apr 2003 22:45:35 -0400 "Malcolm Horton" <mdhorton@...> writes:
                The Glenville power plant was just west of washout road and contained one 300 kilowatt synchronous converter in its latter days. The trolley line crossed under the NYC railroad and over washout road at grade. The station was fed by a high voltage AC transmission line on top of the same poles that supported the trolley wire. In its latter days it was unattended. The converter started automatically when low voltage was detected for a few minutes. It shut down automatically when low output current was detected for a few minutes.
                 
                Malcolm Horton
                ----- Original Message -----
                Sent: Monday, April 14, 2003 10:24 PM
                Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

                Where was the Glenville power plant located?
                 
                Steve myers
                 
                .
                 
                On Mon, 14 Apr 2003 19:22:13 -0400 "Malcolm Horton" <mdhorton@...> writes:
                When the interurban line from Gloversville to Schenectady was built, they also built the Tribes Hill power generating station which burned coal and made 25 cycles per second AC power. They also installed 25 CPS synchronous converters in Johnstown, Amsterdam and Glenville. Not too many years later, An AC transmission line was built from a hydro power generating station at Inghams Mills (on the east Canada creek) to Tribes Hill. Thereafter, the railroad used hdropower and put the Tribes Hill plant on standby. Since Inghams mills is a 60 cycle per second generating station, either one of two things must have happened.
                 
                1) Inghams Mills had 25 CPS generators just for serving the FJ&G load or
                 
                2) The FJ&G purchased and installed 60 CPS synchronous converters to make their direct current when using Inghams Mills 60 CPS AC power.
                 
                If the latter, in order to be able to use Tribes Hill generated power as a back-up, the FJ&G would have had to retain their original 25 CPS synchronous converters too.
                 
                A third possibility would be that a frequency converting motor-generator set (or sets) were installed in the Tribes Hill plant to convert 60 CPS power from Inghams to 25 CPS to power the original synchronous converters.
                 
                We know that eventually the only synchronous converters left were 60 Cycles per second.
                 
                Does anyone know how and when they made the transition from 25 CPS to 60 CPS?
                Perhaps the Bob Bedford clipping file has the answers.
                 
                Malcolm Horton


                Visit Gino's Railpage at http://www.fjgrr.com
                Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


                Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
                 


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                Visit Gino's Railpage at http://www.fjgrr.com
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                Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
                 


                Visit Gino's Railpage at http://www.fjgrr.com
                Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


                Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.


                Visit Gino's Railpage at http://www.fjgrr.com
                Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


                Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
                 


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              • paul larner
                Steve, The Glenville subatation building still stands. It s on private property and up the right of way (road) from Washout road heading west. Yes there is
                Message 7 of 13 , Apr 16, 2003
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                  Steve, The Glenville subatation building still stands. It's on private
                  property and up the right of way (road) from Washout road heading west. Yes
                  there is a chain across the road and off the top of my head I don't know if
                  you can get in there from the other side.

                  PKL






                  >From: "Stephen G. Myers" <Knixrule1@...>
                  >Reply-To: FJGRailroad@yahoogroups.com
                  >To: FJGRailroad@yahoogroups.com
                  >CC: FJGRailroad@yahoogroups.com
                  >Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous
                  >converters
                  >Date: Tue, 15 Apr 2003 09:54:36 -0400
                  >
                  >Here's the next question. Was the sub station there during the great
                  >flood that took out the NYC bridge and gave Washout road it's name?
                  >
                  >Steve Myers
                  >
                  >.
                  >
                  >On Tue, 15 Apr 2003 09:18:40 -0400 "Malcolm Horton" <mdhorton@...>
                  >writes:
                  >I don't know if any foundations remain. The last time I went up Washout
                  >road, there was a chain and a keep out sign across the former right of
                  >way leading towards the substation.
                  >
                  >Mal Horton
                  >----- Original Message -----
                  >From: Stephen G. Myers
                  >To: FJGRailroad@yahoogroups.com
                  >Cc: FJGRailroad@yahoogroups.com
                  >Sent: Tuesday, April 15, 2003 8:22 AM
                  >Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous
                  >converters
                  >
                  >
                  >Is there a foundation or any remains at the Glenville site?
                  >
                  >Steve
                  >
                  >.
                  >
                  >On Mon, 14 Apr 2003 22:45:35 -0400 "Malcolm Horton" <mdhorton@...>
                  >writes:
                  >The Glenville power plant was just west of washout road and contained one
                  >300 kilowatt synchronous converter in its latter days. The trolley line
                  >crossed under the NYC railroad and over washout road at grade. The
                  >station was fed by a high voltage AC transmission line on top of the same
                  >poles that supported the trolley wire. In its latter days it was
                  >unattended. The converter started automatically when low voltage was
                  >detected for a few minutes. It shut down automatically when low output
                  >current was detected for a few minutes.
                  >
                  >Malcolm Horton
                  >----- Original Message -----
                  >From: Stephen G. Myers
                  >To: FJGRailroad@yahoogroups.com
                  >Cc: FJGRailroad@yahoogroups.com
                  >Sent: Monday, April 14, 2003 10:24 PM
                  >Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous
                  >converters
                  >
                  >
                  >Where was the Glenville power plant located?
                  >
                  >Steve myers
                  >
                  >.
                  >
                  >On Mon, 14 Apr 2003 19:22:13 -0400 "Malcolm Horton" <mdhorton@...>
                  >writes:
                  >When the interurban line from Gloversville to Schenectady was built, they
                  >also built the Tribes Hill power generating station which burned coal and
                  >made 25 cycles per second AC power. They also installed 25 CPS
                  >synchronous converters in Johnstown, Amsterdam and Glenville. Not too
                  >many years later, An AC transmission line was built from a hydro power
                  >generating station at Inghams Mills (on the east Canada creek) to Tribes
                  >Hill. Thereafter, the railroad used hdropower and put the Tribes Hill
                  >plant on standby. Since Inghams mills is a 60 cycle per second generating
                  >station, either one of two things must have happened.
                  >
                  >1) Inghams Mills had 25 CPS generators just for serving the FJ&G load or
                  >
                  >2) The FJ&G purchased and installed 60 CPS synchronous converters to make
                  >their direct current when using Inghams Mills 60 CPS AC power.
                  >
                  >If the latter, in order to be able to use Tribes Hill generated power as
                  >a back-up, the FJ&G would have had to retain their original 25 CPS
                  >synchronous converters too.
                  >
                  >A third possibility would be that a frequency converting motor-generator
                  >set (or sets) were installed in the Tribes Hill plant to convert 60 CPS
                  >power from Inghams to 25 CPS to power the original synchronous
                  >converters.
                  >
                  >We know that eventually the only synchronous converters left were 60
                  >Cycles per second.
                  >
                  >Does anyone know how and when they made the transition from 25 CPS to 60
                  >CPS?
                  >Perhaps the Bob Bedford clipping file has the answers.
                  >
                  >Malcolm Horton
                  >
                  >
                  >Visit Gino's Railpage at http://www.fjgrr.com
                  >Visit The Greater Capital District Railfan Assocation at
                  >http://gcdranet.homelinux.com/
                  >
                  >
                  >Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
                  >
                  >
                  >
                  >
                  >Visit Gino's Railpage at http://www.fjgrr.com
                  >Visit The Greater Capital District Railfan Assocation at
                  >http://gcdranet.homelinux.com/
                  >
                  >
                  >Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
                  >
                  >
                  >
                  >Visit Gino's Railpage at http://www.fjgrr.com
                  >Visit The Greater Capital District Railfan Assocation at
                  >http://gcdranet.homelinux.com/
                  >
                  >
                  >Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
                  >
                  >
                  >
                  >
                  >Visit Gino's Railpage at http://www.fjgrr.com
                  >Visit The Greater Capital District Railfan Assocation at
                  >http://gcdranet.homelinux.com/
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                • LeeDarshi Morelli
                  Malcolm, Your postings are so interesting! How many different versions of alternating current cycles per second do you recall hearing about in the U.S.?
                  Message 8 of 13 , Apr 18, 2003
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                    Malcolm,
                     
                    Your postings are so interesting!
                     
                    How many different versions of alternating current cycles per second do you recall hearing about in the U.S.?
                    Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters
                    When the interurban line from Gloversville to Schenectady was built, they also built the Tribes Hill power generating station which burned coal and made 25 cycles per second AC power. They also installed 25 CPS synchronous converters in Johnstown, Amsterdam and Glenville. Not too many years later, An AC transmission line was built from a hydro power generating station at Inghams Mills (on the east Canada creek) to Tribes Hill. Thereafter, the railroad used hdropower and put the Tribes Hill plant on standby. Since Inghams mills is a 60 cycle per second generating station, either one of two things must have happened.

                  • Malcolm Horton
                    Lee, I have heard of the following power company frequencies in the USA: 25, 30, 40, 50, 60, 120 Hertz (cycles per second). There may have been more that I
                    Message 9 of 13 , Apr 18, 2003
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                      Lee,
                       
                      I have heard of the following power company frequencies in the USA:
                      25, 30, 40, 50, 60, 120 Hertz (cycles per second). There may have been more that I haven't heard about.
                       
                      25 Hz was used in traction systems because 25 Hz synchronous converters (the diodes of their day) inherently commutated with less sparking. It was and still is used on the main line from New York to Washington and New York to New Haven because it was feasible to make series connected, commutator type, traction motors which could commutate this high a frequency (this type of motor works best on direct current). The Virginian railroad was also electrified with 25 Hz. Now that we have silicon rectifiers, the preferred frequency for main-line railroads is 60 Hz. This higher frequency can be rectified to DC onboard the locomotive and used to run DC traction motors or be inverted to adjustable frequency AC to run squirrel cage induction type traction motors. The new electrification from New Haven to Boston uses 60 Hz on the overhead wire.
                       
                      Many steel mills used 25 Hz power to run their large low speed rolling mill motors.
                       
                      The Europeans favored 50 Hz for their utility systems and they had 16 2/3 Hz for early railroad electrification.
                       
                      A standards committee has recommended that we use 25,000 volts at 60 Hz for new passenger lines and 50,000 volts for new freight lines. There is a captive mine to power plant railroad out in the southwest which uses 50,000 volts. No one rides these trains. They run by remote computer control and shuttle back and forth between the mine and the power plant.
                       
                      Malcolm Horton
                      ----- Original Message -----
                      Sent: Friday, April 18, 2003 1:53 PM
                      Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

                      Malcolm,
                       
                      Your postings are so interesting!
                       
                      How many different versions of alternating current cycles per second do you recall hearing about in the U.S.?
                      Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters
                      When the interurban line from Gloversville to Schenectady was built, they also built the Tribes Hill power generating station which burned coal and made 25 cycles per second AC power. They also installed 25 CPS synchronous converters in Johnstown, Amsterdam and Glenville. Not too many years later, An AC transmission line was built from a hydro power generating station at Inghams Mills (on the east Canada creek) to Tribes Hill. Thereafter, the railroad used hdropower and put the Tribes Hill plant on standby. Since Inghams mills is a 60 cycle per second generating station, either one of two things must have happened.



                      Visit Gino's Railpage at http://www.fjgrr.com
                      Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


                      Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
                    • LeeDarshi Morelli
                      Malcolm, Thank you. Will you be able to make the next summer get together? It would be a pleasure to meet you and hear all of the interesting things you know.
                      Message 10 of 13 , Apr 18, 2003
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                        Malcolm,
                         
                        Thank you. Will you be able to make the next summer get together? It would be a pleasure to meet you and hear all of the interesting things you know.
                        ----- Original Message -----
                        Sent: Friday, April 18, 2003 5:25 PM
                        Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

                        Lee,
                         
                        I have heard of the following power company frequencies in the USA:
                        25, 30, 40, 50, 60, 120 Hertz (cycles per second). There may have been more that I haven't heard about.
                         
                      • Malcolm Horton
                        Lee, I ll try to make the next summer s get together. Malcolm Horton ... From: LeeDarshi Morelli To: FJGRailroad@yahoogroups.com Sent: Friday, April 18, 2003
                        Message 11 of 13 , Apr 18, 2003
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                          Lee,
                           
                          I'll try to make the next summer's get together.
                           
                          Malcolm Horton
                          ----- Original Message -----
                          Sent: Friday, April 18, 2003 10:30 PM
                          Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

                          Malcolm,
                           
                          Thank you. Will you be able to make the next summer get together? It would be a pleasure to meet you and hear all of the interesting things you know.
                          ----- Original Message -----
                          Sent: Friday, April 18, 2003 5:25 PM
                          Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

                          Lee,
                           
                          I have heard of the following power company frequencies in the USA:
                          25, 30, 40, 50, 60, 120 Hertz (cycles per second). There may have been more that I haven't heard about.
                           


                          Visit Gino's Railpage at http://www.fjgrr.com
                          Visit The Greater Capital District Railfan Assocation at http://gcdranet.homelinux.com/


                          Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
                        • LeeDarshi Morelli
                          Great! I am looking forward to it even more! It was great last year. ... From: Malcolm Horton Sent: Friday, April 18, 2003 10:33 PM Subject: Re: [FJGRailroad]
                          Message 12 of 13 , Apr 18, 2003
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                            Great! I am looking forward to it even more! It was great last year.
                            ----- Original Message -----
                            Sent: Friday, April 18, 2003 10:33 PM
                            Subject: Re: [FJGRailroad] Frequency ratings of FJG AC to DC synchronous converters

                            Lee,
                             
                            I'll try to make the next summer's get together.
                             
                            Malcolm Horton
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