harmonic

harmonic

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  1. S

    Harmonic distortion causing high loss??

    I am busy investigating why my household has an unusually high electricity consumption. Over the past few weeks I have been manually measuring the consumption of many electrical devices in my house (such as the TV, computers, washing machines etc) in order to determine what could be using high...
  2. Jay 1987

    Harmonic current / distortion

    Hi guys I have a question, when we consider the assessment of general characteristics for any installation, who Measures /considers/ enquires about harmonics. is that the job of a normal Installation spark ? If it’s not who does it and how do they test for it? if it is the job of the normal...
  3. I

    Total Harmonic Distortion Qualification.

    I've been looking for somewhere to get a qualification in Voltage and Current Harmonic Testing to help with Ultrasonic testing. I want to use this along with Thermal Testing to help with periodic inspection & testing on installations where its not possible to do any dead testing. I just can not...
  4. R

    Limits for Harmonic Current Emissions

    Hi all Can anyone tell me what the limits for harmonic current emissions are for lighting in bs en 61000? I've asked a manufacturer for a figure for the THD for light fittings they sell, and they've replied with a statement saying that their lighting meets bs en 61000-3-2 limits for harmonic...
  5. Energetic

    Immersun/Sola Controla and harmonic distortion...

    Right here goes, have a feeling this might rumble on for a bit. My business partner has just been speaking to a company building power management systems which will incorporate an immersion controller. They are of the opinion that the Immersun and its similar competitors will be outlawed by...
  6. La Poste

    Harmonic currents

    Greetings I have a quick question about neutral harmonic currents. I have done a little reading on the subject and I understand how harmonic currents from the three phases are in phase with each other and hence sum in the neutral. The third harmonic has three times the frequency of a standard...
  7. silver surfer

    Harmonic distortion and noise

    Guys In GN3 p.19 under the heading of "assessment of general characteristics" point 4 mentions Harmonic distortion, how would that information be made available to a test engineer, and what could he do about it anyway? Tested a job earlier this week and my fluke 1653 was displaying error 5...
  8. A

    Harmonic filter problem ---- computer harmonic analysis using EasyPower software

    I will just apologize to everyone in advance because of my English,, as well as for long post, I just don't know how shorten it :o.. I'm expirencing some problems (that are more "theoretical" nature) with harmonic filters.. I can't seem to find how to properly calculate the values for...
  9. Y

    Amplitude of Harmonic

    Hi guys I want to know how to find an amplitude of harmonic order, I have 3rd harmonic, 14 Amplitude , Phase 0 and Frequency 150 I want to know where that 14 came from plz , and why the phase is 0. Many Thanks for you ALL

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