{"id":1304,"date":"2026-07-22T05:33:09","date_gmt":"2026-07-22T05:33:09","guid":{"rendered":"https:\/\/lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/"},"modified":"2026-09-28T00:53:27","modified_gmt":"2026-09-28T00:53:27","slug":"why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/de\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/","title":{"rendered":"Warum Anregung Einschaltstrom auftreten, wenn ein Transformator Spannung ohne Last?"},"content":{"rendered":"

Warum Anregung Einschaltstrom auftreten, wenn ein Transformator Spannung ohne Last?<\/b><\/h1>\n

Wenn ein Transformator mit Spannung versorgt ist mit keine Last, der erregerstrom sofort erf\u00e4hrt eine vor\u00fcbergehende phase, und seinen Spitzenwert \u00fcberschreiten kann mehrmals der Nenn-Laststrom. Im Vergleich zu den normalen erregerstrom, der steady-state-keine-Laststrom des Transformators ist mehrere Dutzend mal gr\u00f6\u00dfer. Diese Transienten Strom bezeichnet als Anregung Einschaltstrom. \u00dcberm\u00e4\u00dfige Einschaltstrom kann dazu f\u00fchren, relais Fehlbedienung verhindern, dass die glatte Erregung des Transformators in die Schaltung ein. Das Ausma\u00df der Einschaltstrom ist abh\u00e4ngig von der phase der Netzspannung im Augenblick der Transformator die Erregung und den Zustand der magnetischen Kern-residual flux. Die keine-Last closing-Prozess haupts\u00e4chlich manifestiert als \u00fcbergangs-\u00e4ndern des Transformator’s magnetic flux.<\/p>\n

Wenn der magnetische Kern ist kein Rest-Fluss, wenn die Spannung im moment der Schlie\u00dfung am gr\u00f6\u00dften ist, ist der magnetische Flu\u00df f\u00fchrt der Spannung um 90 Grad, wodurch der Fluss gleich null ist. In diesem Fall gibt es keinen Fluss im Magnetkern vor und nach Abschluss, und keine \u00fcbergangs-Prozess Auftritt. Wenn die Spannung im moment des Schlie\u00dfens ist null, die der Fluss erreicht seine maximale Wert. Zu halten die momentane flux auf null, wenn der Schlie\u00dfung, eine gegen-Bewegung (DC-Komponente flux) ist gebildet im Kern zu k\u00fcndigen, die f\u00fcr die sofortige flux (steady-state-flux), und seine Gr\u00f6\u00dfe ist gleich gro\u00df, aber entgegengesetzt in der Richtung. Als Ergebnis, die synthetisiert wird der magnetische Fluss null im moment des Schlie\u00dfens, sondern es wird zweimal die steady-state-flux nach einem halben Zyklus.<\/p>\n

Diese Verdoppelung der Fluss-Wert bewirkt deutliche S\u00e4ttigung des Kerns, was zu einem gro\u00dfen erregerstrom durch die nicht-lineare Natur der core-Magnetisierung-Kurve. Wenn der Kern hat residual flux \u03c6 und es stimmt mit der Richtung des magnetischen Flusses, der von der ersten H\u00e4lfte des Zyklus, die momentane Fluss, erh\u00f6hen auf 2\u00d7\u03c6+\u03c6. Dies f\u00fchrt zu einer gr\u00f6\u00dferen Erregung Einschaltstrom.<\/p>\n

Da die DC-Komponente flux zerf\u00e4llt, die Anregung Einschaltstrom verringert sich ebenfalls und schw\u00e4cht die normalen steady-state-excitation aktuellen Wert innerhalb von ein paar Zyklen. Also, der Schaden die Transformator ist nicht signifikant. In Wirklichkeit ist die Wahrscheinlichkeit eines gro\u00dfen Einschaltstrom ist kleine aufgrund der folgenden Gr\u00fcnde: ein. Die Wahrscheinlichkeit, dass die Schaltung breaker wird erregt bei den Spannungs-Nulldurchgang ist gering. b. W\u00e4hrend Einschaltstrom flie\u00dfen, die Spannung, die in der \u00e4u\u00dferen Stromkreis verringert sich. c. Residual flux nicht unbedingt in phase mit der Spannung die Richtung wechseln, und verringert m\u00f6glicherweise je nach status des externen Schaltung.<\/p>\n

Eine phase des drei-Phasen-Transformator bank immer Erfahrungen, die ein \u00fcbergangs-Ph\u00e4nomen, wie Einschaltstrom, der unvermeidlich ist, wenn es unter Spannung steht. In der Regel, die innere Wicklung eines Kern-Art Transformator hat eine kleinere Reaktanz, was einen gr\u00f6\u00dferen Einschaltstrom spannend, wenn die innere Wicklung. Um zu verhindern, dass relais Fehlbedienung, Methoden wie die Verwendung von Verriegelung relais f\u00fcr eine bestimmte Zeit nach Transformator Erregung eingesetzt werden k\u00f6nnen.<\/p>\n

Kontakt<\/h2>\n

\u96fb\u529b\u306e\u7b97\u51fa: single-phase transformer, three-phase-isolation in Transformatoren, elektrischen Transformator, Verteilung Transformator, step-down und step-up-Transformator, low-Spannung Transformator, hohe Spannung Transformator, Steuerung, Transformator, Ringkern Transformator, R-core-Transformator; DC-Spulen, AC Reaktoren, Filter-Reaktor -, line-und load reactor, drosseln, Filter-Reaktor, und die Mittel, hoch-Frequenz-Produkte<\/a>.<\/p>\n

\u304cV_peak\u7a4d\u306e\u904e\u96fb\u5727\u306e\u30d4\u30fc\u30af\u3068t_res\u306b\u5171\u9cf4\u3002 30%\u30de\u30fc\u30b8\u30f3\u63a8\u5968\u3092\u5360\u3081\u308b\u30b7\u30b9\u30c6\u30e0\u30d1\u30e9\u30e1\u30fc\u30bf\u5316\u3057\u307e\u3059\u3002<\/p>\n

2.2.3\u306e\u52d5\u7684\u5fdc\u7b54\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3 \u73fe\u4ee3\u306e\u30b7\u30b9\u30c6\u30e0\u5229\u7528\u30b5\u30a4\u30ea\u30b9\u30bf\u5236\u5fa1\u306b\u3088\u308b\u62b5\u6297\u6e1b\u8870(TCRD)\u3092\u691c\u77e5\u3059\u308b\u5171\u9cf4\u518510ms\u3001\u914d\u306e\u6b63\u78ba\u6027\u3001\u5207\u65ad\u4e2d\u306e\u901a\u5e38\u306e\u64cd\u4f5c\u306f\u907f\u3051\u307e\u3059\u3002<\/a>.<\/p>\n

3. \u9023\u643a\u6a5f\u69cb\u306e\u30a2\u30af\u30c6\u30a3\u30d6\u30d5\u30a3\u30eb\u30bf
\nWhatsApp\uff1a+86 13787095096
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Why does excitation inrush current occur when a transformer is energized with no load? When a transformer is energized with no load, the excitation current immediately undergoes a transient phase, and its peak value may exceed several times the rated load current. Compared to the normal excitation current, the steady-state no-load current of the transformer […]<\/p>\n","protected":false},"author":3,"featured_media":2799,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[48],"tags":[],"class_list":["post-1304","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq"],"yoast_head":"\nWhy does excitation inrush current occur when a transformer is energized with no load? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD<\/title>\n<meta name=\"description\" content=\"When a transformer is energized with no load, the excitation current immediately undergoes a transient phase, and its peak value may exceed several times the rated load current. Compared to the normal excitation current, the steady-state no-load current of the transformer is several tens of times larger. This transient current is referred to as excitation inrush current. Excessive inrush current can lead to relay misoperation, preventing the smooth energization of the transformer into the circuit. The magnitude of the inrush current depends on the phase of the line voltage at the moment of transformer energization and the state of the magnetic core residual flux. The no-load closing process mainly manifests as the transitional change of the transformer's magnetic flux.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lstransformer.com\/de\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why does excitation inrush current occur when a transformer is energized with no load? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD\" \/>\n<meta property=\"og:description\" content=\"When a transformer is energized with no load, the excitation current immediately undergoes a transient phase, and its peak value may exceed several times the rated load current. 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Im Vergleich zu den normalen erregerstrom, der steady-state-keine-Laststrom des Transformators ist mehrere Dutzend mal gr\u00f6\u00dfer. Diese Transienten Strom bezeichnet als Anregung Einschaltstrom. \u00dcberm\u00e4\u00dfige Einschaltstrom kann dazu f\u00fchren, relais Fehlbedienung verhindern, dass die glatte Erregung des Transformators in die Schaltung ein. Das Ausma\u00df der Einschaltstrom ist abh\u00e4ngig von der phase der Netzspannung im Augenblick der Transformator die Erregung und den Zustand der magnetischen Kern-residual flux. Die keine-Last closing-Prozess haupts\u00e4chlich manifestiert als \u00fcbergangs-\u00e4ndern der Transformator der magnetische Fluss.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.lstransformer.com\/de\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/","og_locale":"de_DE","og_type":"article","og_title":"Why does excitation inrush current occur when a transformer is energized with no load? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","og_description":"When a transformer is energized with no load, the excitation current immediately undergoes a transient phase, and its peak value may exceed several times the rated load current. Compared to the normal excitation current, the steady-state no-load current of the transformer is several tens of times larger. This transient current is referred to as excitation inrush current. Excessive inrush current can lead to relay misoperation, preventing the smooth energization of the transformer into the circuit. The magnitude of the inrush current depends on the phase of the line voltage at the moment of transformer energization and the state of the magnetic core residual flux. The no-load closing process mainly manifests as the transitional change of the transformer's magnetic flux.","og_url":"https:\/\/www.lstransformer.com\/de\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/","og_site_name":"LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","article_published_time":"2026-07-22T05:33:09+00:00","article_modified_time":"2026-09-28T00:53:27+00:00","og_image":[{"width":370,"height":276,"url":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742018565986388.png","type":"image\/png"}],"author":"369703005","twitter_card":"summary_large_image","twitter_misc":{"Verfasst von":"369703005","Gesch\u00e4tzte Lesezeit":"4\u00a0Minuten"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/#article","isPartOf":{"@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/"},"author":{"name":"369703005","@id":"https:\/\/www.lstransformer.com\/#\/schema\/person\/674089c15f4857c19a997f886816d289"},"headline":"Why does excitation inrush current occur when a transformer is energized with no load?","datePublished":"2026-07-22T05:33:09+00:00","dateModified":"2026-09-28T00:53:27+00:00","mainEntityOfPage":{"@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/"},"wordCount":637,"publisher":{"@id":"https:\/\/www.lstransformer.com\/#organization"},"image":{"@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/#primaryimage"},"thumbnailUrl":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742018565986388.png","articleSection":["FAQ"],"inLanguage":"de"},{"@type":"WebPage","@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/","url":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/","name":"Warum Anregung Einschaltstrom auftreten, wenn ein Transformator Spannung ohne Last? - LS power Transformator, die Linie Reaktor, Hohe-Spannung Transformator, \u00d6l-eingetaucht Transformator-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","isPartOf":{"@id":"https:\/\/www.lstransformer.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/#primaryimage"},"image":{"@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/#primaryimage"},"thumbnailUrl":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742018565986388.png","datePublished":"2026-07-22T05:33:09+00:00","dateModified":"2026-09-28T00:53:27+00:00","description":"Wenn ein Transformator mit Spannung versorgt ist mit keine Last, der erregerstrom sofort erf\u00e4hrt eine vor\u00fcbergehende phase, und seinen Spitzenwert \u00fcberschreiten kann mehrmals der Nenn-Laststrom. Im Vergleich zu den normalen erregerstrom, der steady-state-keine-Laststrom des Transformators ist mehrere Dutzend mal gr\u00f6\u00dfer. Diese Transienten Strom bezeichnet als Anregung Einschaltstrom. \u00dcberm\u00e4\u00dfige Einschaltstrom kann dazu f\u00fchren, relais Fehlbedienung verhindern, dass die glatte Erregung des Transformators in die Schaltung ein. Das Ausma\u00df der Einschaltstrom ist abh\u00e4ngig von der phase der Netzspannung im Augenblick der Transformator die Erregung und den Zustand der magnetischen Kern-residual flux. Die keine-Last closing-Prozess haupts\u00e4chlich manifestiert als \u00fcbergangs-\u00e4ndern der Transformator der magnetische Fluss.","breadcrumb":{"@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/#breadcrumb"},"inLanguage":"de","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/"]}]},{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/#primaryimage","url":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742018565986388.png","contentUrl":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/07\/1742018565986388.png","width":370,"height":276},{"@type":"BreadcrumbList","@id":"https:\/\/www.lstransformer.com\/why-does-excitation-inrush-current-occur-when-a-transformer-is-energized-with-no-load\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.lstransformer.com\/"},{"@type":"ListItem","position":2,"name":"Why does excitation inrush current occur when a transformer is energized with no load?"}]},{"@type":"WebSite","@id":"https:\/\/www.lstransformer.com\/#website","url":"https:\/\/www.lstransformer.com\/","name":"LS power Transformator, die Linie Reaktor, Hohe-Spannung Transformator, \u00d6l-eingetaucht Transformator-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","description":"","publisher":{"@id":"https:\/\/www.lstransformer.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.lstransformer.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"de"},{"@type":"Organization","@id":"https:\/\/www.lstransformer.com\/#organization","name":"LS power Transformator, die Linie Reaktor, Hohe-Spannung Transformator, \u00d6l-eingetaucht Transformator-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD","url":"https:\/\/www.lstransformer.com\/","logo":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/www.lstransformer.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/06\/cropped-7e09bd7bad9c830e0d75b8487b0d77c3-1.webp","contentUrl":"https:\/\/www.lstransformer.com\/wp-content\/uploads\/2026\/06\/cropped-7e09bd7bad9c830e0d75b8487b0d77c3-1.webp","width":760,"height":202,"caption":"LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD"},"image":{"@id":"https:\/\/www.lstransformer.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.lstransformer.com\/#\/schema\/person\/674089c15f4857c19a997f886816d289","name":"369703005","image":{"@type":"ImageObject","inLanguage":"de","@id":"https:\/\/secure.gravatar.com\/avatar\/dcaa0e47cd7b6c99ffdd80f5772032ed2d2591b5b8e7b905e5fd87a850954248?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/dcaa0e47cd7b6c99ffdd80f5772032ed2d2591b5b8e7b905e5fd87a850954248?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/dcaa0e47cd7b6c99ffdd80f5772032ed2d2591b5b8e7b905e5fd87a850954248?s=96&d=mm&r=g","caption":"369703005"},"url":"https:\/\/www.lstransformer.com\/de\/author\/369703005\/"}]}},"_links":{"self":[{"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/posts\/1304","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/comments?post=1304"}],"version-history":[{"count":4,"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/posts\/1304\/revisions"}],"predecessor-version":[{"id":6716,"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/posts\/1304\/revisions\/6716"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/media\/2799"}],"wp:attachment":[{"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/media?parent=1304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/categories?post=1304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lstransformer.com\/de\/wp-json\/wp\/v2\/tags?post=1304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}