From: dhky@shaw.ca   
      
   On 20/11/2013 8:58 AM, J.B. Wood wrote:   
   > Hello, everyone.  In July 2012, in the aftermath of the derecho storm   
   > that clobbered the Washington, DC metro area many pole-mounted medium   
   > voltage power distribution transformers had to be replaced for various   
   > reasons.  In my area of Arlington County I noticed that the replacements   
   > don't have the customary surge arrester that is usually bolted to the   
   > side of the transformer case.  For the record the MV system in my   
   > neighborhood is of type 34.5/19.9 kV.   
   >   
   > Again, I'm referring to the arrestor, not the fuse/cutout combination   
   > that connects the transformer primary side to the feeder.  Is this a   
   > cost-cutting measure?  Thanks for your time and comment.  Sincerely,   
      
      
   You may find that the surge arrestor is not necessarily mounted on the   
   transformer but is a separate unit near it (typically looks like an   
   insulator between the fuse and the transformer but there will be a lead   
   to ground (probably to the ground on the transformer).   
   --   
   Don Kelly   
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