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   alt.engineering.electrical      Electrical engineering discussion forum      2,547 messages   

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   Message 2,255 of 2,547   
   Anthony Stewart to Anthony Stewart   
   Re: Power Factor Correction   
   25 Nov 20 05:56:07   
   
   From: tony.sunnysky@gmail.com   
      
   On Wednesday, 25 November 2020 at 08:48:01 UTC-5, Anthony Stewart wrote:   
   > On Tuesday, 24 November 2020 at 08:47:06 UTC-5, Adrian Caspersz wrote:    
   > > On 23/11/2020 18:42, J.B. Wood wrote:   
   > >. Would be kind of dangerous I would think. Sincerely,    
   > >    
   >    
   >    
   > I’m thinking about my $25 E, H signal level meter but it’s only 10kHz to   
   3GHz and measures in V/m and uT/m    
   >    
   > Using a dipole antenna loaded with an LC filter tuned to swamp any RF above   
   10kHz and a large loop antenna with the same, I think it’s possible to   
   measure power factor remotely then aggregate the field measurements to compare   
   with the power studies    
   to determine which load networks will benefit from a low Q Cap loading on a   
   transmission line modelled on Falstad’s with a delay line network   
   simulation.    
   >    
   > AC motors usually draw a bit more than 5 times the rated load current on   
   start up which when unloaded means it’s about 50 times with zero load , so   
   effectively it’s 98% VAR, or 2% of then determine the cyclical nature of   
   motor work during the day    
   and the distribution of loads from steady, variable , start-stop, arc welding   
   , old fashioned HPS street lamps and determine which of loads will save on   
   maintenance costs with some sort of threshold model.    
   >    
   > The best tools are the one you know how to use and you will wish you knew MB   
   Hydro’s PSTools (?). It I know Falstad’s web simulator really well is   
   capable of good simulations on transmission lines in time or spectral domain.    
   >    
   > Anyways if there was a PO, I could design my idea for a non-contact EH PF   
   tester.   
      
   Brain fart on the motor’s PF from startup to no load to full load , that’s   
   just the real power change , anyways a portable DSO in XY mode for HE fields ,   
   calibrated ought to measure the average 3 phase imbalance which may be   
   accurate enuf to estimate    
   the sum with a near field non contact set of measurements, measured in three   
   1km spacing where the phases rotate.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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