From: arl_123234@hotmail.com   
      
   On 4/5/19 11:24 AM, Michael Moroney wrote:   
      
   >   
   > I mentioned them since your earlier reply indicated that you thought   
   > delta connected regulators didn't exist or you didn't know of any.   
   > Perhaps I have misinterpreted your reply.   
   >   
      
   Hello, and I failed to make the distinction between a fixed (with or   
   without manual tap changers) MV booster transformer and a device   
   specfically designed to provide MV voltage regulation.  I haven't come   
   across any off-the-shelf pole-mount equipment (except perhaps that   
   Cooper unit) that was specifically designed to interconnect two 3-phase   
   distribution systems having different voltages.  Such a device would be   
   useful when incrementally upgrading/creating MV branch circuits to   
   higher potentials, e.g. upgrading a 7200/12470 distribution branch to   
   one that operates with higher potentials (e.g. 7970/13800 or   
   14400/24940).  Eventually the entire MV infrastructure back to the HV   
   substation becomes operational at the new potentials.  Sincerely,   
      
   --   
   J. B. Wood	            e-mail: arl_123234@hotmail.com   
      
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