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Mechanical Voltage regulator question
https://www.rypn.org/forums/viewtopic.php?f=1&t=44984		 Page 1 of 1
Author:  srwsstv [ Mon Oct 26, 2020 3:00 pm ]
Post subject:  Mechanical Voltage regulator question
Does anyone have any documentation on the old EMD mechanical voltage regulators?

All I'm able to locate is a basic wiring diagram for them. I'm specifically looking for adjustment instructions.
Author:  Overmod [ Mon Oct 26, 2020 3:18 pm ]
Post subject:  Re: Mechanical Voltage regulator question
I believe there is an ex-Southern Railway locomotive maintenance document on line (it contains the adjustment instructions for setting the Woodward-governor solenoids in some detail) and this might cover any unusual voltage-regulator settings.

A common battery capacity for locomotives with 74V nominal electrical-system voltage is 32 cells, 64 nominal volts. By comparison a typical automobile alternator develops 13.8V and charges a nominal 12V battery, very close to the same ratio. I would not be surprised to find that any voltage-regulator adjustment or modulation in charging to follow, say, typical lead-acid 'best practice' would be at least analogous to that for mechanical regulation on older automobiles with generators... something that the auto restoration community might have distinctive competence in advising.
Author:  Scott Kwiatkowski [ Mon Oct 26, 2020 7:22 pm ]
Post subject:  Re: Mechanical Voltage regulator question
I think you're looking for MI 570.

Let me know if you need a copy.

Scott
Author:  srwsstv [ Mon Oct 26, 2020 8:23 pm ]
Post subject:  Re: Mechanical Voltage regulator question
Scott Kwiatkowski wrote:
I think you're looking for MI 570.

Let me know if you need a copy.

Scott


Yeah that sounds like the right one, if you could send it to me that would be great!
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