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Dranetz-BMI News

   October 5, 2009
   Fall 2009 PQView User Group Meeting and Workshops
 
   October 1, 2009
   New Power Quality Handbook
 
   August 31, 2009
   PQ Synergy Conference, Bangkok, Thailand
 
   August 1, 2009
   Dranetz-BMI introduces PUMA
 
   June 1, 2009
   Grainger SupplyLink Wind Power Story
 
   February 27, 2008
   Electric West / Power Quality & Reliability Speakers - CEO of Dranetz-BMI
 
   February 1, 2008
   Richard Bingham, Wins Coveted John Mungenast Award
 
   January 4, 2007
   GMC-I Gossen-Metrawatt Acquires
Dranetz-BMI / Daytronic Corp. / Electrotek Concepts
 
 
 


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The sum of THD
A common statistical number used is called THD, or total harmonic distortion. This is a mathematical process where: the magnitude of the harmonics for voltage or current are squared; summed; the square root is taken on the s

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