{"id":14104,"date":"2023-09-18T00:07:52","date_gmt":"2023-09-18T00:07:52","guid":{"rendered":"https:\/\/staging.rayzeek.com\/?p=14104"},"modified":"2023-12-26T08:44:13","modified_gmt":"2023-12-26T08:44:13","slug":"what-is-harmonic","status":"publish","type":"post","link":"https:\/\/staging.rayzeek.com\/id\/glossary\/what-is-harmonic","title":{"rendered":"What is Harmonic"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-what-is-harmonic\">What is Harmonic<\/h2><p>In the lighting industry, the term &#8220;harmonic&#8221; refers to a component of a distorted or non-sinusoidal periodic signal that has a frequency that is a non-zero even integer multiple of the fundamental frequency of the signal. Harmonics can occur in currents or voltages and are typically caused by non-linear loads in the electrical system.<\/p><div class=\"insert_portfolio_outer_wrapper\"><h3>Get Inspired by Rayzeek Motion Sensor Portfolios.<\/h3><p>Doesn't find what you want? Don't worry. There are always alternate ways to solve your problems. Maybe one of our portfolios can help.<\/p><div class = \"insert_portfolio_buttons\"><div class = \"insert_portfolio_button_wrapper\"><div><a href = \"https:\/\/www.rayzeek.com\/product-category\/motion-sensors\"><p>PIR Motion Sensors<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/motion-sensor-switches\"><p>Motion Sensor Switches<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/occupancy-vacancy-sensors\"><p>Occupancy Sensors<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/products\/rz050\"><p>Air Conditioner Motion Sensor<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/motion-sensor-light-strip\"><p>Motion Sensor Light Strips<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/dc-sensor-dimmer\"><p>Low-voltage DC Motion Sensors\/Dimmers<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/wireless-motion-sensors\"><p>Wireless Motion Sensor Kits<\/p><\/a><\/div><\/div><\/div><\/div><p>Harmonics can lead to various issues in the lighting industry. One common problem is flickering lights, which can occur when there are rapid fluctuations in load current or voltage, particularly in machinery. Examples of machinery that can cause flickering lights include large motors during startup, machinery with cyclo-converters like rolling mill drives and mine winders, and machines that use static frequency converters such as AC motors and electric arc furnaces.<\/p><p>Another issue caused by harmonics is the overheating of transformers and the tripping of breakers. This occurs when non-linear loads draw current in abrupt pulses rather than in a smooth sinusoidal manner. The harmonic currents generated by these non-linear loads can flow back into other parts of the power system, resulting in overheating of transformers and the tripping of breakers.<\/p><p>To measure the presence of harmonics, the Total Harmonic Distortion (THD) is often used. THD is the sum of all the harmonic effects and is typically measured up to the 50th multiple of the fundamental frequency (60 Hz in the U.S.) or at 3 kHz. It is recommended that the voltage harmonic effects should be less than 8 percent relative to the fundamental frequency, and values above 8 percent should be further investigated.<\/p><div class=\"insert_inquiry_outer_wrapper\"><h3>Looking For Motion-Activated Energy-Saving Solutions?<\/h3><p>Contact us for complete PIR motion sensors, motion-activated energy-saving products, motion sensor switches, and Occupancy\/Vacancy commercial solutions.<\/p><div class = \"insert_inquiry_buttons\"><div class = \"insert_inquiry_button_wrapper insert_inquiry_button_email\"><div><a href = \"mailto:info@rayzeek.com\"><p>Send an Email<\/p><\/a><\/div><\/div><div class = \"insert_inquiry_button_wrapper insert_inquiry_button_email_contact\"><div><a href=\"https:\/\/www.rayzeek.com\/contact\"><p>Contact Form<\/p><\/a><\/div><\/div><div class = \"insert_inquiry_button_wrapper insert_inquiry_button_chat chat_jump\"><div><a href=\"#\"><p>Chat Online<\/p><\/a><\/div><\/div><\/div><\/div><div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\">Frequently Asked Questions<\/h2>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-causes-electrical-harmonics\">What Causes Electrical Harmonics<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Harmonics occur when there are nonlinear loads that convert AC line voltage to DC. These harmonics enter the electrical system due to the presence of nonlinear electronic switching devices like variable frequency drives (VFDs), computer power supplies, and energy-efficient lighting.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-does-led-lighting-cause-harmonics\">Does LED Lighting Cause Harmonics<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>With the installation of LED lighting, there is a possibility of harmonic distortion arising from the load. This distortion can lead to equipment and electrical distribution network strain, resulting in higher maintenance expenses and downtime. It is important to note that sometimes the effects of harmonic stress may not be apparent until there is a complete equipment failure.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-how-does-harmonics-affect-power-quality\">How Does Harmonics Affect Power Quality<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Harmonic currents have a negative impact on power quality by causing an increase in the r.m.s. current in electrical systems. This, in turn, leads to a deterioration in the quality of the supply voltage. Additionally, harmonics put stress on the electrical network and have the potential to damage equipment. They can also disrupt the normal operation of devices and result in higher operating costs.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-how-do-you-check-harmonics-in-a-power-system\">How Do You Check Harmonics in a Power System<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Measure the total harmonic distortion (THD) using a clamp meter that has the capability to indicate harmonics. Ensure that the THD for voltage does not exceed 5%, while the THD for current may be considerably higher. To gain more insight into the magnitude and impact of each harmonic, utilize a power quality analyzer.<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-does-harmonics-affect-voltage\">Does Harmonics Affect Voltage<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>Harmonic voltages, which are produced when harmonic currents flow against the impedance of the harmonic, can result in notable overvoltages. These overvoltages have been observed to cause equipment malfunctions, with capacitors being especially vulnerable to these effects.<\/p><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>In the lighting industry, the term &#8220;harmonic&#8221; refers to a component of a distorted or non-sinusoidal periodic signal that has a frequency that is a non-zero even integer multiple of the fundamental frequency of the signal.<\/p>","protected":false},"author":4,"featured_media":12868,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"lighting industry\", \"idxall\": 1, \"keywordtitlesimi\": 0.7885549306869507, \"keywordslugsimi\": 0.7885549306869507, \"paratitlesimi\": 0.6529279321432114, \"paraslugsimi\": 0.6529279321432114, \"slug\": \"tips-for-increasing-the-efficiency-of-commercial-lighting\", \"title\": \"Tips for Increasing the Efficiency of Commercial Lighting\", \"id\": 10327}, {\"keyword\": \"60 Hz\", \"idxall\": 0, \"keywordtitlesimi\": 0.7806369662284851, \"keywordslugsimi\": 0.7707458734512329, \"paratitlesimi\": 0.6719734072685242, \"paraslugsimi\": 0.6530662775039673, \"slug\": \"what-is-hertz-hz\", \"title\": \"What is Hertz (Hz)\", \"id\": 14300}]","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"harmonic","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[102],"tags":[99],"class_list":["post-14104","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Harmonic - Rayzeek<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/staging.rayzeek.com\/id\/glossary\/what-is-harmonic\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Harmonic - Rayzeek\" \/>\n<meta property=\"og:description\" content=\"In the lighting industry, the term &#8220;harmonic&#8221; 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