{"id":7302,"date":"2026-11-07T06:46:47","date_gmt":"2026-11-07T06:46:47","guid":{"rendered":"https:\/\/www.lstransformer.com\/?p=7302"},"modified":"2026-10-26T12:15:44","modified_gmt":"2026-10-26T12:15:44","slug":"a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/fr\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\/","title":{"rendered":"Un Loud “Coup” Lors de la Commutation Sur un Transformateur: Est-Il Endommag\u00e9?"},"content":{"rendered":"

Un Loud “Coup” Lors de la Commutation Sur un Transformateur: Est-Il Endommag\u00e9?<\/h1>\n

Les transformateurs sont des \u00e9l\u00e9ments essentiels dans les syst\u00e8mes d'alimentation et de leur fonctionnement stable est essentiel. Lorsque vous chauffez un transformateur apr\u00e8s l'installation ou de la maintenance, vous pouvez parfois entendre un important bourdonnement ou un bruit “bang.” Ce ph\u00e9nom\u00e8ne, dans des activit\u00e9s li\u00e9es \u00e0 l'\u00e9nergie dans le monde entier, souvent soul\u00e8ve des inqui\u00e9tudes parmi les op\u00e9rateurs: indique-t-il un d\u00e9faut ou d'endommager le transformateur? Cet article analyse en d\u00e9tail les causes profondes, et vous aider \u00e0 distinguer entre un physique normal \u00e9v\u00e9nement et un potentiel de signe d'alerte.<\/p>\n

\"\"<\/a><\/p>\n

1. Principale Cause du Bruit de Commutation: Courant de d\u00e9marrage<\/em><\/h3>\n

La cause la plus courante de le bruit est le courant d'appel ou de la magn\u00e9tisation de courant d'appel. C'est une passag\u00e8re, de haute magnitude de courant de surtension\u2014d\u00e9passant de loin la valeur nominale de courant qui circule dans l'enroulement primaire lorsqu'un transformateur est sous tension sur le r\u00e9seau \u00e9lectrique dans un vide (sans charge connect\u00e9e).<\/p>\n

1.1 Comment Le Courant Passe<\/b><\/strong><\/h4>\n

Les transformateurs fonctionnent sur le principe de l'induction \u00e9lectromagn\u00e9tique. Au cours de l'\u00e9tat d'\u00e9quilibre de l'op\u00e9ration, le flux magn\u00e9tique (\u03a6) dans le c\u0153ur suit de pr\u00e8s la tension appliqu\u00e9e (V). Cependant, \u00e0 l'exact moment de la commutation, cet \u00e9quilibre est perturb\u00e9.<\/p>\n

1.1.1 La Passag\u00e8re du Processus de Flux de l'\u00c9tablissement<\/b><\/strong><\/h5>\n

La tension AC est une onde sinuso\u00efdale. L'instant de commutation (la tension de l'angle de phase) est essentiel pour la mise en place initiale de flux magn\u00e9tique. Selon Faraday’s de la loi:<\/p>\n

V = N(d\u03a6\/dt)<\/b><\/strong><\/p>\n

o\u00f9 V est la tension instantan\u00e9e<\/p>\n

\u00a0N est-tours<\/p>\n

\u00a0d\u03a6\/dt est la vitesse de variation du flux.<\/p>\n

Le Point Cl\u00e9:\u00a0<\/span>Si on ferme l'interrupteur, pr\u00e9cis\u00e9ment \u00e0 la tension de passage \u00e0 z\u00e9ro (instantan\u00e9e de la tension est de 0), le taux de variation du flux (d\u03a6\/dt) doit aussi \u00eatre \u00e9gal \u00e0 z\u00e9ro. Cependant, la base de flux doit commencer \u00e0 partir de z\u00e9ro. De “rattraper” \u00e0 l'\u00e9tat d'\u00e9quilibre de flux de la forme d'onde correspondant \u00e0 la tension, le syst\u00e8me cr\u00e9e une grande transitoires flux de d\u00e9calage. L'\u00e9tablissement de ce d\u00e9calage n\u00e9cessite une tr\u00e8s grande instantan\u00e9e du courant dans l'enroulement\u2014c'est le courant d'appel.<\/p>\n

1.2 Effets Physiques, et le Son qui en r\u00e9sulte<\/b><\/strong><\/h4>\n

Ce courant instantan\u00e9, qui peut \u00eatre de 6 \u00e0 10 fois le courant nominal, les d\u00e9clencheurs de forts effets physiques \u00e0 l'int\u00e9rieur du transformateur:<\/p>\n

(1) <\/b><\/strong>Intense Forces \u00c9lectromagn\u00e9tiques: <\/b><\/strong><\/h6>\n

Le courant \u00e9lev\u00e9 cr\u00e9e un puissant champ magn\u00e9tique autour de la enroulements, soumettant l'enroulement de conducteurs et de la structure centrale de l'parties \u00e0 d'importantes contraintes m\u00e9caniques, provoquant minuscule, instantan\u00e9e des d\u00e9placements ou \u00e0 des vibrations.<\/p>\n

(2) <\/b><\/strong>Core Magn\u00e9tostriction: <\/b><\/strong><\/h6>\n

Noyaux de transformateur sont fabriqu\u00e9s de lamin\u00e9s en acier de silicium. En vertu de l'intense, l'\u00e9volution du champ magn\u00e9tique, le mat\u00e9riau de base expositions “magn\u00e9tostriction,” sens de ses dimensions physiques du changement finement avec la force du champ magn\u00e9tique.<\/p>\n

(3) <\/b><\/strong>La G\u00e9n\u00e9ration Du Son: <\/b><\/strong><\/h6>\n

Les vibrations structurelles de forces \u00e9lectromagn\u00e9tiques combiner avec les vibrations du c\u0153ur de magn\u00e9tostriction. Ces vibrations, avec un riche contenu de fr\u00e9quence, sont amplifi\u00e9s par le r\u00e9servoir, radiateurs, etc., et sont lib\u00e9r\u00e9s par un signal sonore “bang,” “boom” ou bourdonnement.<\/p>\n\n\n\n\n\n\n\n\n
Caract\u00e9ristique<\/strong><\/td>\nValeur Typique \/ Description<\/strong><\/td>\n<\/tr>\n
Le Pic De L'Ampleur<\/td>\nJusqu'\u00e0 6 \u00e0 10 fois le courant nominal<\/td>\n<\/tr>\n
Dur\u00e9e<\/td>\nG\u00e9n\u00e9ralement de plusieurs cycles de puissance (quelques dizaines \u00e0 centaines de millisecondes)<\/td>\n<\/tr>\n
Taux De D\u00e9croissance<\/td>\nLa d\u00e9croissance rapide \u00e0 l'\u00e9tat d'\u00e9quilibre de non-courant de charge (d\u00e9pend du syst\u00e8me d'imp\u00e9dance & transformateur de conception)<\/td>\n<\/tr>\n
Principaux Effets Physiques<\/td>\n\u00c9lectromagn\u00e9tique des forces m\u00e9caniques, Core magn\u00e9tostriction<\/td>\n<\/tr>\n
Son Typique<\/td>\nUn seul ou de courtes s\u00e9ries de “bang,” “boom” ou “thud” les sons<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Tableau 1: Transformateur De Courant Caract\u00e9ristiques Et Impact<\/div>\n

2. Distinguer le Normal du courant d'Appel de Bruit \u00e0 partir d'Indicateurs de D\u00e9faut<\/em><\/h3>\n

Alors que la plupart des bruits forts sont dues \u00e0 la normale transformateur de courant d'appel, certains bruits anormaux peuvent signaler des probl\u00e8mes. Savoir comment les diff\u00e9rencier est la cl\u00e9.<\/p>\n

2.1 Caract\u00e9ristiques de la Normale d'Appel de courant de Bruit<\/b><\/strong><\/h4>\n

(1) le Calendrier:<\/span> Occurs\u00a0strictly at the moment of switching on. The sound is brief (usually ends within 1-2 seconds).<\/p>\n

(2) la Nature:<\/span> Un seul “boom” ou une courte s\u00e9rie de “tape” qui estompe rapidement. Par la suite, le transformateur fonctionne avec un uniforme, stable hum.<\/p>\n

(3) Pas D'Autres Sympt\u00f4mes:<\/span> After the sound, there is\u00a0no persistent abnormal noise,\u00a0no unusual smoke or gas emission, and\u00a0no protective device operation\u00a0(e.g., relays do not trip).<\/p>\n

2.2 les Caract\u00e9ristiques des Bruits Anormaux Indiquant d'\u00c9ventuels D\u00e9fauts<\/b><\/strong><\/h4>\n

Si la suite des motifs sonores se produisent pendant ou apr\u00e8s la commutation, il peut indiquer un probl\u00e8me:<\/p>\n

2.2.1 les Sons Internes de D\u00e9fauts \u00c9lectriques<\/b><\/strong><\/h5>\n

par exemple, l'inter-tourner \u00e0 remontage des shorts, des graves de d\u00e9charge interne. Les sons peuvent m\u00e9langer avec de l'appel de courant de bruit, mais pr\u00e9sentent des diff\u00e9rences:<\/p>\n

(1) Sharp cracking or continuous arcing\/discharge sounds: <\/span>Peut s'accompagner d'isolation int\u00e9rieure ventilation.<\/p>\n

(2) Accompanied by protection trips:<\/span> Souvent provoque une rapide op\u00e9ration de surintensit\u00e9, diff\u00e9rentielle ou de gaz Buchholz), des relais de d\u00e9clenchement du circuit.<\/p>\n

(3) Persistence:<\/span> La faute et associ\u00e9s bruit\/vibration ne sont g\u00e9n\u00e9ralement pas rapidement s'estomper comme l'irruption d'effets.<\/p>\n

2.2.2 les Sons de Probl\u00e8mes M\u00e9caniques<\/b><\/strong><\/h5>\n

par exemple, les pauvres de base de mise \u00e0 la terre, l\u00e2che serrage des structures excit\u00e9 par la grande irruption de forces.<\/p>\n

(1)Persistent, rhythmic vibrating or knocking sounds:<\/span> Anormale, rythmique “tic-tac,” “en cliquant,” ou in\u00e9gale “bourdonnement” persiste pendant l'\u00e9tat d'\u00e9quilibre apr\u00e8s l'op\u00e9ration de commutation.<\/p>\n

(2)Localized sound:<\/span> Parfois, la source sonore peut \u00eatre trac\u00e9e par l'\u00e9coute, \u00e0 proximit\u00e9 de diff\u00e9rentes parties du transformateur, indiquant un local probl\u00e8me m\u00e9canique.<\/p>\n\n\n\n\n\n\n\n\n
Aspect<\/b><\/strong><\/td>\nNormal Irruption De Son<\/b><\/strong><\/td>\nSuspicion De D\u00e9faut Sonore<\/b><\/strong><\/td>\n<\/tr>\n
Calendrier<\/td>\nStrictement \u00e0 l'allumage moment<\/td>\nMay occur at switch-on, but\u00a0more often persists or recurs afterward<\/td>\n<\/tr>\n
La Qualit\u00e9 Du Son<\/td>\nPente faible “boom” bref<\/td>\nSharp crackle, continue d'arc sonore, rythmique frapper\/vibration<\/td>\n<\/tr>\n
Dur\u00e9e<\/td>\nDispara\u00eet compl\u00e8tement en quelques secondes<\/td>\nPersiste ou se produit par intermittence<\/td>\n<\/tr>\n
Accompagnement Des Enseignes \u00c9lectriques<\/td>\nAucune protection voyage; m\u00e8tres revenir \u00e0 la normale<\/td>\nSouvent une protection voyages, soutenue anormale des relev\u00e9s de compteur, des changements soudains dans en ligne DGA de donn\u00e9es<\/td>\n<\/tr>\n
Op\u00e9ration Ult\u00e9rieure<\/td>\nSon renvoie imm\u00e9diatement \u00e0 l'uniforme r\u00e9gulier hum<\/td>\nLe bruit de fonctionnement reste anormalement \u00e9lev\u00e9 ou instable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Tableau 2: Guide d'Identification Transformateur de Commutation Sons<\/div>\n

3. La fa\u00e7on de G\u00e9rer et d'Att\u00e9nuer le Courant d'Appel et de Ses Effets<\/em><\/h3>\n

M\u00eame si le bruit est normal, courant d'appel \u00e9lev\u00e9 pose de stress potentiels pour la grille et le transformateur lui-m\u00eame (par exemple, creux de tension, risque de relais de dysfonctionnement). L'\u00e9chelle internationale a adopt\u00e9 des mesures peuvent aider \u00e0 le g\u00e9rer.<\/p>\n

3.1 Mesure Op\u00e9rationnelle: Contr\u00f4le De Commutation (Commande De Phase)<\/b><\/strong><\/h4>\n

(1) Principe:\u00a0<\/span>Comme l'a expliqu\u00e9, l'irruption de l'ampleur d\u00e9pend directement de la tension de l'angle de phase \u00e0 l'allumage. Th\u00e9oriquement, la commutation \u00e0 la tension des r\u00e9sultats de pointe dans le plus petit courant d'appel.<\/p>\n

(2) Action:<\/span>\u00a0Use\u00a0synchronous (point-on-wave) controllers\u00a0or smart circuit breakers to precisely close the contacts at a specific point on the voltage waveform (near the peak).<\/p>\n

(3) Effet:<\/span>\u00a0Peut r\u00e9duire le courant d'appel des pics de plus de 50%, de mani\u00e8re significative d'amortissement du bruit et du stress \u00e9lectromagn\u00e9tique.<\/p>\n

3.2 au Niveau de l'Appareil de Mesures: R\u00e9manence de la Gestion ou de la R\u00e9sistance en S\u00e9rie<\/b><\/strong><\/h4>\n
3.2.1 <\/b><\/strong>R\u00e9manence De Gestion:<\/b><\/strong><\/h5>\n

(1) Principe:<\/span> Apr\u00e8s de mise hors tension, le c\u0153ur peut conserver certains de flux magn\u00e9tique (r\u00e9manence). Si le “cible flux” \u00e0 partir de la tension de commutation est \u00e0 l'oppos\u00e9 de la r\u00e9manence de la direction, ils s'additionnent, l'aggravation de la flux de d\u00e9calage et de courant d'appel. La gestion active de r\u00e9manence (par exemple, pour les ramener \u00e0 z\u00e9ro ou de conna\u00eetre son \u00e9tat avant de commutation) sida optimale de la strat\u00e9gie de commutation.<\/p>\n

(2) Effet:<\/span> R\u00e9duit l'impr\u00e9visibilit\u00e9 et, combin\u00e9 avec le contr\u00f4le de phase optimise la commutation.<\/p>\n

3.2.2<\/b><\/strong>Pr\u00e9-insertion de R\u00e9sistances:<\/b><\/strong><\/h5>\n

(1) Principe:<\/span> Avant de l'interrupteur principal de fermeture des contacts, de contacts auxiliaires avec une r\u00e9sistance en s\u00e9rie \u00e0 proximit\u00e9 de la premi\u00e8re. La r\u00e9sistance limite le courant initial, permettant de flux de construire en douceur. Apr\u00e8s un bref d\u00e9lai, le principal fermeture des contacts, court-circuit de la r\u00e9sistance.<\/p>\n

(2) Effet:<\/span> Physiquement limite le courant initial de pointe; une m\u00e9thode tr\u00e8s efficace pour les grandes HT transformateurs.<\/p>\n

3.3 Conception Du Syst\u00e8me De Mesures: Courant D'Appel De Limiteurs D'Effort, Et \u00c0 La Protection De La Logique<\/b><\/strong><\/h4>\n

(1) Courant D'Appel Limiteurs De: <\/span>Sp\u00e9cialement con\u00e7u inductive ou non-lin\u00e9aire r\u00e9sistifs temporairement connect\u00e9 au circuit de supprimer le sommet.<\/p>\n

(2) Relais De Protection R\u00e9glage D'Optimisation:<\/span> R\u00e9glage de l'harmonique de retenue param\u00e8tres diff\u00e9rentiels ou relais de surintensit\u00e9 de les aider \u00e0 mieux distinguer entre le courant d'appel (riche en 2e harmonique) et v\u00e9ritable courant de d\u00e9faut, la pr\u00e9vention des d\u00e9clenchements intempestifs.<\/p>\n

\"\"<\/a><\/p>\n

Conclusion Et Recommandation<\/b><\/strong><\/h2>\n

Avoir entendu un grand bruit lors de la commutation sur un transformateur est pas la cause imm\u00e9diate de la panique. C'est probablement d\u00fb \u00e0 un courant d'appel\u2014une forte mais g\u00e9n\u00e9ralement normale ph\u00e9nom\u00e8ne physique. Cependant, un responsable de l'op\u00e9rateur doit avoir la capacit\u00e9 \u00e0 discriminer. Surveiller les signes \u00e9num\u00e9r\u00e9s ci-dessus. En cas de doute, ou si des sympt\u00f4mes persistent, consulter un professionnel qualifi\u00e9 pour l'inspection. La bonne compr\u00e9hension et \u00e0 la gestion du transformateur d'alimentation d'assurer \u00e0 la fois la s\u00e9curit\u00e9 et la fiabilit\u00e9.<\/p>\n

Contact<\/h2>\n

LuShan, heure de l'est. 1975, est un fabricant professionnel Chinois sp\u00e9cialis\u00e9 dans les transformateurs de puissance et des r\u00e9acteurs de plus de 50 ans. Les produits de pointe sont transformateur monophas\u00e9, triphas\u00e9 transformateurs d'isolement, transformateur \u00e9lectrique, transformateur de distribution, l'\u00e9tape vers le bas et d'intensifier le transformateur de basse tension du transformateur, transformateur \u00e0 haute tension, contr\u00f4le de transformateur toro\u00efdal transformateur, transformateur R-core; inductances DC, AC r\u00e9acteurs, le filtrage du r\u00e9acteur, de ligne et de charge du r\u00e9acteur, des bobines, le filtrage du r\u00e9acteur, et interm\u00e9diaire, \u00e0 haute fr\u00e9quence produits<\/a>.<\/p>\n

Nos transformateurs de puissance et les r\u00e9acteurs sont largement utilis\u00e9s dans les 10 domaines d'application: transport en commun rapide, les machines de construction, les \u00e9nergies renouvelables, intelligents de fabrication, des \u00e9quipements m\u00e9dicaux, de la mine de charbon de l'explosion de la pr\u00e9vention, de l'excitation du syst\u00e8me, frittage sous vide(four), d'une climatisation centrale.<\/p>\n

En savoir plus sur transformateur de puissance et le r\u00e9acteur: www.lstransformer.com<\/a>.<\/p>\n

Si vous souhaitez obtenir des solutions personnalis\u00e9es pour les transformateurs ou des r\u00e9acteurs, veuillez nous contacter.
\nWhatsApp\uff1a+86 13787095096
\nE-mail: marketing@hnlsdz.com<\/p>","protected":false},"excerpt":{"rendered":"

A Loud “Bang” When Switching On a Transformer: Is It Damaged? Transformers are vital components in power systems, and their stable operation is crucial. When energizing a transformer after installation or maintenance, you might sometimes hear a significant humming noise or a loud “bang.” This phenomenon, possible in power operations worldwide, often raises concerns among […]<\/p>\n","protected":false},"author":1,"featured_media":7303,"comment_status":"open","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-7302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq"],"yoast_head":"\nA Loud "Bang" When Switching On a Transformer: Is It Damaged? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD Loud Bang When Switching On a Transformer: Inrush Current, Mechanical Stress & Damage Risk<\/title>\n<meta name=\"description\" content=\"A loud bang when energizing a transformer is usually magnetizing inrush, not evidence of damage. Unloaded energization can drive the core into saturation and produce high-amplitude inrush current, whose effects include differential protection misoperation, deterioration of insulation and winding mechanical supports, voltage sag and harmonic pollution. Inrush is asymmetrical and rich in harmonics, imposing mechanical stress on windings. This guide explains when the bang is benign and when cumulative stress matters.\" \/>\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\/fr\/a-loud-bang-when-switching-on-a-transformer-is-it-damaged-3\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Loud "Bang" When Switching On a Transformer: Is It Damaged? - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD Loud Bang When Switching On a Transformer: Inrush Current, Mechanical Stress & Damage Risk\" \/>\n<meta property=\"og:description\" content=\"A loud bang when energizing a transformer is usually magnetizing inrush, not evidence of damage. Unloaded energization can drive the core into saturation and produce high-amplitude inrush current, whose effects include differential protection misoperation, deterioration of insulation and winding mechanical supports, voltage sag and harmonic pollution. Inrush is asymmetrical and rich in harmonics, imposing mechanical stress on windings. 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