From: noone@nospam.com   
      
   Στις 12/3/2020 1:48 μ.μ., ο DecadentLinuxUserNumeroUno@decadence.org   
   έγραψε:   
   > "J.B. Wood"  wrote in   
   > news:r4apb8$1st5$1@gioia.aioe.org:   
   >   
   >> On 3/11/20 9:02 AM, Dimitris Tzortzakakis wrote:   
   >>   
   >>> as I am sure you know, measuring the PF on MV lines would need to   
   >>> interrupt the circuit and mount potential and current   
   >>> transformers to feed the measuring equipment.   
   >>   
   >> Hello, and that would certainly be the way via direct measurement,   
   >> but hardly practical if you're dealing with something like a   
   >> 34.5/19.9 kV 4-wire distribution system, as is common in my   
   >> residential environs. I'm unsure if MV PF measurement equipment   
   >> even exists.  Sincerely,   
   >>   
   >>   
   >   
   >    Somehow, they can tell at the generation point.   
   >   
   >    Not practical to examine in the field as you say.   
   >   
   >    I have seen sub stations with three sets of three phase feeds and   
   > three sets of three huge banks of caps and 9 circuit interruptor   
   > swing arms too.   
   >   
   of course you mean disconnect switches (usually combined with earthing   
   switches and oil circuit breakers)   
      
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