From: cfmpublic@ns.sympatico.ca   
      
   On Mon, 15 Feb 2016 12:49:06 +0000, Charles Ellson    
   wrote:   
      
   >On Mon, 15 Feb 2016 02:48:07 +0000 (UTC), kh@pnnnnx.kom (Kurt   
   >Hackenberg) wrote:   
   >   
   >>   
   >>Stephen Sprunk   wrote:   
   >>   
   >>>This is why all new high-speed lines are 2x25kV.   
   >>   
   >>What does 2x mean?   
   >>   
   >https://en.wikipedia.org/wiki/25_kV_AC_railway_electrification   
   >-> 2 × 25 kV autotransformer system   
   >   
   >https://www.railelectrica.com/traction-distribution/2x25-kv-traction-system/   
      
      
   Can as much power be transmitted from the grid to the locomotives /   
   EMUs at 12.5 KV as is delivered at 25 KV at a given frequency?  If not   
   does lowering the frequency change the amount of power that can be   
   delivered assuming modern equipment in all cases?   
      
   Clark Morris   
      
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