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Hi all! I'm Garry, I'm a #railway engineer based in the UK specialising in the overhead line systems that supply power to #electric trains. I'm so convinced that electric rail is the future that I wrote a book about how it works - you can download it FREE at https://www.ocs4rail.com/downloads or buy hard copy at https://www.thepwi.org/product/overhead-line-electrification-for-railways. I also post the odd #RailwayPhotos #RailwayPhotography. I'm going to be moving all my #RailwaysExplained threads over here and doing some new ones too
@25kV more railways explained?! yes please!
@q that's the plan - will focus on moving existing ones over first
Thanks for sharing this! I've already learned lots of interesting things, e.g. about foundation damage resulting from stray currents.
Things I never knew existed, but make sense as a transition technology when you think about it:
"Electric-Steam Traction"
(From page 221)
Well, that was a thoroughly enjoyable skim, and I will no doubt return to it to read a few sections in more detail in the future! Again, thank you for making this available.
@ve7fim you're welcome!
@25kV more electricity powered rail, rather than adding an electric rail though right 
@25kV Since you're the up to date 25kV person, do you have a patient or older sibling doing the 1500V DC equivalent? Glad that we've moved to inverter feeds for railway in Brisbane (33kV sub transmission supply), because the unbalance & harmonics from two phase 110kV or 132kV (we have both) transformers are nasty.
@ingram I try to cover DC OLE in the book, but I'm not a hardcore electrical engineer and I'm much weaker on DC. There's a DC 3rd and 4th rail book in the pipeline from a couple of UK colleagues though
@25kV Cool. Will download your book and try and wrap my head around collector transformers. Never got them to twig for me.