EMC

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</header> <div role="main" class="main-container container js-quickedit-main-content"> <div class="row"> <div class="col-sm-12 iec-section-heading" role="heading"> <div class="region region-header"> <div class="breadcrumb-wap iec-full-width"> <div class="container"> <ol class="breadcrumb iec-breadcrumb"> <li > <a href="/">Home</a> </li> <li > <a href="/where-we-make-difference">Where we make a difference</a> </li> <li > <a href="/fundamentals">Fundamentals</a> </li> <li class="breadcrumb-text"> <span>EMC</span> </li> <li class="active" class="breadcrumb-text"> <span>EMC</span> </li> </ol> </div> </div> </div> </div> <section class="col-sm-12"> <div class="highlighted"> <div class="region region-highlighted"> <div data-drupal-messages-fallback class="hidden"></div> </div> </div> <a id="main-content"></a> <div class="region region-content"> <article about="/emc" class="page full clearfix"> <div class="content"> <div class="dynamic-layouts-container custom-12" > <div class="dynamic-layout-row iec-row "> <div data-region="r5c1c5969093f7c5c1c5969093fa" class="dynamic-layouts-container-column layout-builder--layout__region col-12 iec-col "> <section class="block block-layout-builder block-inline-blockmodule-overview-header clearfix iec-overview-block iec-full-width with-margin" style="background-image:url(/system/files/styles/original_image/private/2019-11/content/media/image/anechoic-chamber.jpg?itok=xXtFnm2M);"> <div class="iec-overview-block-content"> <div class="container"> <div class="iec-overview-block-text"> <h1 class="text-block-title field--name-field-title condensed">Electromagnetic compatibility</h1> <div class="field field--name-field-description field--type-string-long field--label-hidden field--item">Electromagnetic emissions, whether man-made or natural, have the potential to disturb a vulnerable device, by either causing it to malfunction or to stop operating</div> <a class="iec-read-more hvr-icon-forward" href='/emc-zone-news'> EMC Events <i class="ion ion-ios-arrow-round-forward hvr-icon"></i> </a> </div> </div> </div> </section> </div> </div> </div> <div class="dynamic-layouts-container custom-12" > <div class="dynamic-layout-row iec-row "> <div data-region="r5c1c5969093f7c5c1c5969093fa" class="dynamic-layouts-container-column layout-builder--layout__region col-12 iec-col "> <section class="block block-iec-section-custom block-layout-builder block-inline-blockmodule-single-element-text clearfix single-element-text" id="single-element-text-1686"> <div class="text-block-header" style="text-align:left;"> <h2 class="text-block-title condensed" style="font-size:35px;" id="article-header-id-1686-emc"> EMC </h1> </div> <div class="text-block-content" style="text-align:left;"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><p>Not that long ago, passengers on airplanes were asked to shut off their mobile phones during take-off and landing. In hospitals, certain areas are still off-limits to mobile phones since they could cause medical equipment to malfunction. The reason is that devices such as mobile phones can generate electromagnetic interference that disturbs the proper functioning of vulnerable equipment.</p> <p>Electrical currents create electromagnetic (EM) waves. The term electromagnetic interference (EMI) recognizes that these waves can cause disturbances at any frequency range (Hz to GHz). </p> <p>Successful avoidance of these interferences is known as electromagnetic compatibility (EMC). EMC is the process in which such electromagnetic interferences are contained so that all surrounding equipment can operate safely and reliably.</p> <p>IEC International Standards specify the general conditions and rules necessary for achieving electromagnetic compatibility. They specify emission measurement methods, set emission limits, detail immunity testing techniques and test levels, and recommend mitigation methods.</p> <p>The need for IEC publications on EMC continues to grow, influenced by new technologies, miniaturization, and electronics that can operate on a wide range of frequencies.</p></div> </div> </section> </div> </div> </div> <div class="dynamic-layouts-container custom-12" > <div class="iec-full-width iec-bg-grey"> <div class="container"> <div class="dynamic-layout-row iec-row iec-fixed-row-bg "> <div data-region="r5c627bcf91f79c5c627bcf91f7d" class="dynamic-layouts-container-column layout-builder--layout__region col-12 iec-col "> <section class="block block-layout-builder block-inline-block-module-white-gray-space clearfix"> <div class="module-white-gray-space-content iec-bg-color iec-bg-grey"> </div> </section> <section class="block block-iec-section-custom block-layout-builder block-inline-blockmodule-single-element-text clearfix single-element-text" id="single-element-text-7203"> <div class="text-block-header" style="text-align:left;"> <h2 class="text-block-title condensed" style="font-size:35px;" id="article-header-id-7203-understanding-emc"> Understanding EMC </h1> </div> <div class="text-block-content" style="text-align:left;"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><p id="article-header-id-1853-understanding-emc">Every electrical and electronic device produces a certain level of so-called electromagnetic interference (EMI) that can adversely affect the performance of similar equipment located nearby.</p> <p>Electromagnetic compatibility (EMC) provides methods that help contain EMI so that electrical and electronic systems or components are able to work correctly even when they are close together.  In essence, EMC is about protecting sensitive equipment such as radio receivers, domestic appliances or electronic circuits from electromagnetic interference, and containing the electromagnetic emissions for example from large scale batteries, power lines or electric motors so that they can't interfere with more sensitive devices. </p> </div> </div> </section> </div> </div> </div> </div> </div> <div class="dynamic-layouts-container custom-12" > <div class="iec-full-width iec-bg-grey"> <div class="container"> <div class="dynamic-layout-row iec-row iec-fixed-row-bg "> <div data-region="r5c6296c0100ccc5c6296c0100cf" class="dynamic-layouts-container-column layout-builder--layout__region col-8 iec-col "> <section class="block block-iec-section-custom block-layout-builder block-inline-blockmodule-single-element-text clearfix single-element-text" id="single-element-text-1853"> <div class="text-block-content" style="text-align:left;"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><p>Multiple sources of electromagnetic disturbances can have a cumulative effect on a device. For example, the emissions from several laptop computers combined with those from mobile phones could disrupt systems in an aircraft.</p> <p>The electromagnetic disturbances from each item of equipment must be limited and, simultaneously, each item must have an adequate level of immunity to the disturbances in its environment.</p> <p>Several techniques can be used to achieve EMC. Avoidance techniques call for the removal of the source of disturbance or the reduction of its level of emissions. Alternatively, mitigation techniques, such as filtering or shielding, can limit the effect of the disturbance.</p> </div> </div> </section> </div> <div data-region="r5c6296c0100ccc5c6296d9dd0b1" class="dynamic-layouts-container-column layout-builder--layout__region col-4 iec-col "> <section class="block block-iec-section-custom block-layout-builder block-inline-blockmodule-single-element-image clearfix" style="height:430px;"> <div class="iec-module-image-container b-lazy" data-src="/system/files/styles/original_image/private/2019-11/content/media/image/devices_2.png?itok=SX3qTBS1"> <span role="img" aria-label="devices_2.png"> </span> </div> </section> </div> </div> </div> </div> </div> <div class="dynamic-layouts-container custom-12" > <div class="dynamic-layout-row iec-row "> <div data-region="r5c1c5969093f7c5c1c5969093fa" class="dynamic-layouts-container-column layout-builder--layout__region col-12 iec-col "> <section class="block block-layout-builder block-inline-block-module-white-gray-space clearfix"> <div class="module-white-gray-space-content iec-bg-color iec-bg-white"> </div> </section> </div> </div> </div> <div class="dynamic-layouts-container custom-12" > <div class="dynamic-layout-row iec-row "> <div data-region="r5c1c55be5f91fc5c1c5eb78860b" class="dynamic-layouts-container-column layout-builder--layout__region col-6 iec-col "> <section class="block block-iec-section-custom block-layout-builder block-inline-blockmodule-single-element-image clearfix" style="height:400px;"> <div class="iec-module-image-container b-lazy" data-src="/system/files/styles/original_image/private/2019-11/content/media/image/electromagnetic2.png?itok=yvqTaL5u"> <span role="img" aria-label="electromagnetic2.png"> </span> </div> </section> </div> <div data-region="r5c1c55be5f91fc5c1c5eb943a12" class="dynamic-layouts-container-column layout-builder--layout__region col-6 iec-col "> <section class="block block-iec-section-custom block-layout-builder block-inline-blockmodule-single-element-text clearfix single-element-text" id="single-element-text-1854"> <div class="text-block-header" style="text-align:left;"> <h2 class="text-block-title condensed" style="font-size:35px;" id="article-header-id-1854-emc-safety"> EMC safety </h1> </div> <div class="text-block-content" style="text-align:left;"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><p>In situations where electromagnetic interference (EMI) could lead to a safety hazard, special design and testing procedures need to be applied. For <a href="https://www.evernote.com/shard/s547/nl/69198/2f247169-393d-4b7b-891c-1fbe44009672" tabindex="-1">functional safety</a> applications, the safety integrity levels of the device or system must be considered.</p> <p>Achieving functional safety requires a careful evaluation of the product design for failure modes in the presence of EMI. There is also a need to consider life cycle design, the performance of a device as well as to test the product to ensure that its safety function is maintained.</p> </div> </div> </section> </div> </div> </div> <div class="dynamic-layouts-container custom-12" > <div class="dynamic-layout-row iec-row "> <div data-region="r5c1c5969093f7c5c1c5969093fa" class="dynamic-layouts-container-column layout-builder--layout__region col-12 iec-col "> <section class="block block-iec-section-custom block-layout-builder block-inline-blockmodule-single-element-text clearfix single-element-text" id="single-element-text-7204"> <div class="text-block-header" style="text-align:left;"> <h2 class="text-block-title condensed" style="font-size:35px;" id="article-header-id-7204-emc-publications"> EMC publications </h1> </div> <div class="text-block-content" style="text-align:left;"> <div class="field field--name-body field--type-text-with-summary field--label-hidden field--item"><p>IEC publications on EMC are used by manufacturers from the design stage. They help contain EMI from the start and facilitate later immunity testing.</p> <p>IEC basic publications on EMC cover the general aspects of electromagnetic interference and specify the general conditions and rules necessary for achieving electromagnetic compatibility. They apply to a wide range of products and systems.  </p> <p>Other categories of EMC publications address specific products operating in environments such as lighting, industrial manufacturing, power stations or substations where high currents, magnetic fields, or electromagnetic pulses can be found. </p> </div> </div> <div class="text-link-container" style="text-align:left;"> <div class="item-link iec-read-more"> <a href="/basic-emc-publications" class="hvr-icon-forward"> EMC publications <i class="ion ion-ios-arrow-round-forward hvr-icon"></i></a> </div> </div> </section> </div> </div> </div> <div class="dynamic-layouts-container custom-12" > <div class="iec-full-width iec-bg-grey"> <div class="container"> <div class="dynamic-layout-row iec-row iec-fixed-row-bg "> <div data-region="r5c627bcf91f79c5c627bcf91f7d" class="dynamic-layouts-container-column layout-builder--layout__region col-12 iec-col "> <section class="block block-block-content 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