{"id":1327,"date":"2026-07-22T05:33:12","date_gmt":"2026-07-22T05:33:12","guid":{"rendered":"https:\/\/lstransformer.com\/whats-the-steps-for-no-load-trial-operation-of-transformers\/"},"modified":"2026-09-30T02:36:40","modified_gmt":"2026-09-30T02:36:40","slug":"whats-the-steps-for-no-load-trial-operation-of-transformers","status":"publish","type":"post","link":"https:\/\/www.lstransformer.com\/fr\/whats-the-steps-for-no-load-trial-operation-of-transformers\/","title":{"rendered":"What\u2019s the Steps for No-Load Trial Operation of Transformers"},"content":{"rendered":"

What\u2019s the\u00a0Steps for No-Load Trial Operation of Transformers<\/strong><\/h1>\n

(1)<\/span><\/strong> During the trial operation phase, start by placing the tap changer in the middle position and conduct a no-load trial run. Then, gradually switch to various positions, observing the contacts for proper engagement and ensuring normal operation.<\/p>\n

(2)<\/span><\/strong> If the transformer is connected as a unit with a generator, during the initial startup, gradually increase the voltage to full voltage. For newly installed or overhauled transformers, a full-voltage impulse closing test must be conducted 3 to 5 times to verify the qualification of insulation performance, mechanical strength, electrical protection, fuse devices, and to check for the possibility of misoperation.<\/p>\n

(3)<\/span> <\/strong>After the transformer is energized for the first time, the operating time should not be less than 10 minutes. During this period, carefully listen for any abnormal noises inside the transformer. This can be done by using a dry wooden stick or an insulated rod, touching one end to the transformer casing and placing the other end near the ear to detect whether the sound after energization is slight and uniform. If intermittent explosions or sudden loud noises occur, immediately stop the trial run and disconnect the transformer power supply.<\/p>\n

(4)<\/span><\/strong> For transformers with strong wind or forced oil circulation cooling, it is necessary to measure the temperature rise under no-load conditions. The specific procedure is as follows:<\/p>\n

without activating the cooling device, allow the transformer to run without load for 12 to 24 hours, recording the ambient temperature and the upper oil temperature of the transformer. When the oil temperature rises to 75\u00b0C, start 1 to 2 cooling units for heat dissipation, continue measuring and recording the oil temperature until it stabilizes.<\/p>\n

Contact<\/strong><\/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":"

What\u2019s the\u00a0Steps for No-Load Trial Operation of Transformers (1) During the trial operation phase, start by placing the tap changer in the middle position and conduct a no-load trial run. Then, gradually switch to various positions, observing the contacts for proper engagement and ensuring normal operation. (2) If the transformer is connected as a unit […]<\/p>\n","protected":false},"author":3,"featured_media":4187,"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-1327","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq"],"yoast_head":"\nWhat\u2019s the Steps for No-Load Trial Operation of Transformers - LS power transformer, Line reactor, High-voltage transformer, Oil-immersed transformer-CHANGSHA LUSHAN ELECTRONIC TECHNOLOGY CO.,LTD<\/title>\n<meta name=\"description\" content=\".During the trial operation phase, start by placing the tap changer in the middle position and conduct a no-load trial run. 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