https://www.designingbuildings.co.uk/w/index.php?action=history&feed=atom&title=Harmonics 2026-06-02T19:12:09Z Revision history for this page on the wiki MediaWiki 1.17.4 https://www.designingbuildings.co.uk/w/index.php?title=Harmonics&diff=287517&oldid=prev 2024-10-22T10:26:31Z

<p></p> <table style="background-color: white; color:black;"> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 10:26, 22 October 2024</td> </tr><tr><td colspan="2" class="diff-lineno">Line 26:</td> <td colspan="2" class="diff-lineno">Line 26:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* DC offset.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* DC offset.</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Power.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Power.</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* Triplen harmonics.</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Voltage.</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* Voltage.</div></td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div>&#160;</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* </ins>Watt.</div></td></tr> <tr><td class='diff-marker'>&minus;</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Watt.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:DCN_Definition]] [[Category:Definitions]]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:DCN_Definition]] [[Category:Definitions]]</div></td></tr> </table>

Designing Buildings https://www.designingbuildings.co.uk/w/index.php?title=Harmonics&diff=287507&oldid=prev 2024-10-22T10:12:37Z

<p>Created page with &quot;[https://www.bsria.com/uk/product/vBGLrE/bsria_power_quality_guide_ag_22000_a15d25e1/ BSRIA Power quality guide (AG 2/2000)] was written by C C Pearson and V Uthayanan and publis...&quot;</p> <p><b>New page</b></p><div>[https://www.bsria.com/uk/product/vBGLrE/bsria_power_quality_guide_ag_22000_a15d25e1/ BSRIA Power quality guide (AG 2/2000)] was written by C C Pearson and V Uthayanan and published by BSRIA in July 2000. It states:<br /> <br /> Waveform distortion is defined as a steady state deviation from an ideal sine wave of power frequency, principally characterised by the spectral content of the deviation.<br /> <br /> There are five primary types of waveform distortion:<br /> <br /> * dc offset<br /> * harmonics<br /> * interharmonics<br /> * notching<br /> * noise<br /> <br /> Harmonics are sinusoidal voltages or currents having frequencies that are integer multiples of the frequency at which the supply system is designed to operate (termed the fundamental frequency; usually 50 Hz or 60 Hz). Distorted waveforms can be decomposed into a sum of the fundamental frequency and the harmonics. Harmonic distortion originates in the nonlinear characteristics of devices and loads on the power system.<br /> <br /> Harmonic distortion levels are described by the complete harmonic spectrum with magnitudes and phase angles of each individual harmonic component. It is also common to use a single quantity, the total harmonic distortion (THD), as a measure of the effective value of harmonic distortion.<br /> <br /> --[[User:BSRIA|BSRIA]]<br /> <br /> = Related articles on Designing Buildings =<br /> <br /> * Alternating current and direct current<br /> * Ampere.<br /> * BSRIA articles on Designing Buildings.<br /> * BSRIA definitions.<br /> * BSRIA.<br /> * DC offset.<br /> * Power.<br /> * Voltage.<br /> <br /> Watt.<br /> <br /> [[Category:DCN_Definition]] [[Category:Definitions]]</div>

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