oil immersed transformer<\/a><\/strong>, transformer oil plays two important roles: electrical insulation and heat transfer.<\/p>\n\n\n\nOver time, transformer oil can deteriorate because of heat, moisture, oxidation, contamination, and aging.<\/p>\n\n\n\n
Regular transformer oil testing<\/strong> can help determine whether the insulating oil remains suitable for service.<\/p>\n\n\n\nDepending on the maintenance program, testing may evaluate properties such as moisture content, dielectric strength, acidity, and other indicators of oil condition.<\/p>\n\n\n\n
Transformer oil analysis<\/strong> can also provide valuable information about the internal condition of oil-filled equipment.<\/p>\n\n\n\nWhere oil quality has deteriorated, appropriate oil treatment or a transformer oil purification system<\/strong> may be considered, depending on the condition of the equipment and the manufacturer\u2019s recommendations.<\/p>\n\n\n\n<\/span>5. Prevent Moisture Contamination<\/strong><\/span><\/h2>\n\n\n\nMoisture can seriously affect transformer insulation. Water contamination can reduce dielectric strength and accelerate insulation deterioration.<\/p>\n\n\n\n
For oil-filled transformers, maintenance teams should inspect seals, gaskets, breathers, conservator systems, and other areas that could allow moisture to enter the equipment.<\/p>\n\n\n\n
Transformers installed outdoors should also be protected against rainwater, flooding, condensation, and other environmental conditions.<\/p>\n\n\n\n
Keeping the transformer properly sealed and maintaining its moisture-control systems can significantly reduce the risk of insulation-related problems.<\/p>\n\n\n\n
<\/span>6. Inspect Bushings and Connections<\/strong><\/span><\/h2>\n\n\n\nBushings provide an insulated path for electrical conductors to pass through the transformer tank. Because they are exposed to electrical and environmental stresses, they should be inspected regularly.<\/p>\n\n\n\n
Maintenance teams should look for:<\/p>\n\n\n\n
\n- Cracks<\/li>\n\n\n\n
- Contamination<\/li>\n\n\n\n
- Oil leakage<\/li>\n\n\n\n
- Signs of overheating<\/li>\n\n\n\n
- Discoloration<\/li>\n\n\n\n
- Physical damage<\/li>\n<\/ul>\n\n\n\n
Electrical connections should also be checked for looseness and corrosion. Loose connections can increase electrical resistance and generate localized heat.<\/p>\n\n\n\n
Any maintenance work should be performed by qualified personnel using appropriate procedures and safety controls.<\/p>\n\n\n\n
<\/span>7. Maintain the Cooling System<\/strong><\/span><\/h2>\n\n\n\nAn effective cooling system is essential for reliable transformer operation.<\/p>\n\n\n\n
Depending on the design, a transformer may use natural cooling, fans, pumps, radiators, or other cooling arrangements.<\/p>\n\n\n\n
Cooling components should be inspected regularly to ensure they are operating correctly.<\/p>\n\n\n\n
For transformers equipped with fans, maintenance personnel should check for:<\/p>\n\n\n\n
\n- Fan motor problems<\/li>\n\n\n\n
- Damaged blades<\/li>\n\n\n\n
- Excessive vibration<\/li>\n\n\n\n
- Dust accumulation<\/li>\n\n\n\n
- Electrical faults<\/li>\n\n\n\n
- Blocked airflow<\/li>\n<\/ul>\n\n\n\n
For oil-cooled equipment, radiators and oil circulation systems should also be checked.<\/p>\n\n\n\n
A cooling-system failure can cause transformer temperature to rise rapidly, so abnormal cooling performance should be investigated immediately.<\/p>\n\n\n\n
8. Carry Out Transformer Testing<\/strong><\/p>\n\n\n\nRegular transformer testing<\/strong> is an important part of preventive maintenance.<\/p>\n\n\n\nDepending on the transformer type, age, application, and maintenance strategy, tests may include:<\/p>\n\n\n\n
\n- Insulation resistance testing<\/li>\n\n\n\n
- Winding resistance testing<\/li>\n\n\n\n
- Transformer turns-ratio testing<\/li>\n\n\n\n
- Oil testing<\/li>\n\n\n\n
- Electrical diagnostic tests<\/li>\n\n\n\n
- Temperature monitoring<\/li>\n\n\n\n
- Protective-device testing<\/li>\n<\/ul>\n\n\n\n
Testing can help identify deterioration that may not be visible during a normal inspection.<\/p>\n\n\n\n
The appropriate testing schedule should be determined according to manufacturer recommendations, applicable standards, transformer operating conditions, and the criticality of the installation.<\/p>\n\n\n\n
9. Monitor Insulation Condition<\/strong><\/p>\n\n\n\nTransformer insulation is one of the most important components affecting service life.<\/p>\n\n\n\n
Insulation can deteriorate because of heat, moisture, electrical stress, contamination, mechanical damage, and aging.<\/p>\n\n\n\n
Maintaining appropriate operating temperatures and preventing moisture contamination can help slow insulation deterioration.<\/p>\n\n\n\n
For oil-filled transformers, the condition of the oil-paper insulation system should be considered alongside oil quality and operating temperature.<\/p>\n\n\n\n
10. Protect the Transformer From Electrical Surges<\/strong><\/p>\n\n\n\nElectrical surges caused by lightning, switching operations, or faults can damage transformer windings and insulation.<\/p>\n\n\n\n
Proper protection systems can reduce the risk of serious damage.<\/p>\n\n\n\n
Depending on the installation, protection may include:<\/p>\n\n\n\n
\n- Surge arresters<\/li>\n\n\n\n
- Circuit breakers<\/li>\n\n\n\n
- Protective relays<\/li>\n\n\n\n
- Proper grounding<\/li>\n\n\n\n
- Overcurrent protection<\/li>\n\n\n\n
- Differential protection<\/li>\n<\/ul>\n\n\n\n
The transformer and its protection system should be inspected and tested according to the applicable maintenance requirements.<\/p>\n\n\n\n
IEC\u2019s power-transformer standards include dedicated requirements for protective devices and accessories used with liquid-immersed transformers.<\/p>\n\n\n\n
11. Keep the Transformer Clean and Dry<\/strong><\/p>\n\n\n\nDust, dirt, moisture, and other contaminants can negatively affect transformer performance.<\/p>\n\n\n\n
For indoor installations, ventilation openings should be kept clean and unobstructed. For dry type transformers<\/strong>, maintaining adequate airflow around the equipment is particularly important because cooling depends heavily on the surrounding air and the transformer\u2019s ventilation arrangement.<\/p>\n\n\n\nOutdoor transformers should be kept free from excessive vegetation, debris, standing water, and other environmental hazards.<\/p>\n\n\n\n
12. Maintain Proper Records<\/strong><\/p>\n\n\n\nGood maintenance is easier when equipment history is properly documented.<\/p>\n\n\n\n
Maintenance records should include:<\/p>\n\n\n\n
\n- Inspection dates<\/li>\n\n\n\n
- Transformer testing results<\/li>\n\n\n\n
- Oil analysis results<\/li>\n\n\n\n
- Repairs performed<\/li>\n\n\n\n
- Load history<\/li>\n\n\n\n
- Temperature readings<\/li>\n\n\n\n
- Fault records<\/li>\n\n\n\n
- Replacement components<\/li>\n\n\n\n
- Abnormal operating conditions<\/li>\n<\/ul>\n\n\n\n
These records allow maintenance teams to identify trends and compare current performance with previous results.<\/p>\n\n\n\n
For example, gradually increasing operating temperatures or changes in oil test results may indicate developing problems.<\/p>\n\n\n\n
13. Use Condition Monitoring for Critical Transformers<\/strong><\/p>\n\n\n\nFor critical electrical installations, traditional periodic inspections may not be sufficient on their own.<\/p>\n\n\n\n
Modern condition-monitoring systems can provide continuous information about transformer performance.<\/p>\n\n\n\n
A transformer monitoring system<\/strong> can help operators observe important parameters and identify abnormal trends. This can support predictive maintenance by allowing maintenance teams to investigate developing problems before they result in equipment failure.<\/p>\n\n\n\nThis approach can be particularly valuable for large power transformers<\/strong>, utility equipment, industrial transformers, and transformers supporting critical infrastructure.<\/p>\n\n\n\n14. Follow the Manufacturer\u2019s Maintenance Recommendations<\/strong><\/p>\n\n\n\nEvery transformer is designed differently. Maintenance requirements can vary depending on transformer capacity, insulation system, cooling method, voltage level, installation environment, and operating conditions.<\/p>\n\n\n\n
For this reason, the manufacturer\u2019s maintenance instructions should always be considered when developing a maintenance program.<\/p>\n\n\n\n
A transformer manufacturer can also provide information about recommended inspection intervals, operating limits, testing procedures, replacement components, and other equipment-specific requirements.<\/p>\n\n\n\n
The IEC\u2019s TC 14 work covers power transformers used in power generation, transmission, distribution, and industrial applications, including associated cooling systems, fittings, and accessories. <\/p>\n\n\n\n
<\/span>Recommended Transformer Maintenance Checklist<\/strong><\/span><\/h2>\n\n\n\nA practical maintenance program can include the following:<\/p>\n\n\n\n
Daily or routine monitoring<\/strong><\/p>\n\n\n\n\n- Check unusual noise or vibration<\/li>\n\n\n\n
- Monitor temperature<\/li>\n\n\n\n
- Check for visible oil leakage<\/li>\n\n\n\n
- Observe load conditions<\/li>\n<\/ul>\n\n\n\n
Periodic inspections<\/strong><\/p>\n\n\n\n\n- Inspect bushings<\/li>\n\n\n\n
- Check electrical connections<\/li>\n\n\n\n
- Inspect cooling systems<\/li>\n\n\n\n
- Check oil levels where applicable<\/li>\n\n\n\n
- Inspect seals and gaskets<\/li>\n\n\n\n
- Check for corrosion and physical damage<\/li>\n<\/ul>\n\n\n\n
Scheduled testing<\/strong><\/p>\n\n\n\n\n- Perform transformer testing<\/li>\n\n\n\n
- Conduct transformer oil testing where applicable<\/li>\n\n\n\n
- Analyze insulation condition<\/li>\n\n\n\n
- Test protective equipment<\/li>\n\n\n\n
- Review monitoring data<\/li>\n<\/ul>\n\n\n\n
Long-term maintenance<\/strong><\/p>\n\n\n\n\n- Analyze equipment trends<\/li>\n\n\n\n
- Plan component replacement<\/li>\n\n\n\n
- Review loading conditions<\/li>\n\n\n\n
- Evaluate transformer efficiency<\/li>\n\n\n\n
- Consider refurbishment or replacement when necessary<\/li>\n<\/ul>\n\n\n\n
\u0417\u0430\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435<\/strong><\/p>\n\n\n\nMaintaining an electrical transformer properly is one of the best ways to extend its service life and protect a power system from unexpected failures.<\/p>\n\n\n\n
Regular inspection, temperature monitoring, proper load management, transformer oil analysis<\/strong>, electrical testing, cooling-system maintenance, insulation monitoring, surge protection, and accurate maintenance records all contribute to reliable transformer operation.<\/p>\n\n\n\nWhether you operate a distribution transformer<\/strong>, oil immersed transformer<\/strong>, dry type transformer<\/strong>, industrial transformer<\/strong>, or power transformer<\/strong>, preventive maintenance should be treated as a long-term investment rather than an unnecessary expense.<\/p>\n\n\n\nA proactive approach can help identify developing problems early, reduce repair costs, improve electrical safety, minimize downtime, and maximize the useful life of valuable transformer equipment.<\/p>\n\n\n\n
<\/span>Choose DHDL for Your Transformer Solution<\/span><\/h2>\n\n\n\nDHDL is a professional transformer and power distribution equipment manufacturer serving utility, industrial, commercial and renewable-energy projects.<\/p>\n\n\n\n
Our transformer solutions can be customized according to project capacity, voltage combination, frequency, winding material, installation environment and IEC or ANSI\/IEEE requirements<\/strong>.<\/p>\n\n\n\nWhether you need a 75kVA three-phase transformer<\/strong> or a complete transformer and switchgear solution, providing complete electrical specifications at the RFQ stage helps our engineering team confirm a more accurate configuration.<\/p>\n\n\n\nNeed a 75kVA transformer quotation? Send us your primary voltage, secondary voltage, frequency, application, standard, quantity and destination country.<\/strong><\/p>\n\n\n\n\ud83d\udcacWeChat\/WhatsApp\uff1a+8613355383777<\/p>\n\n\n\n
\ud83d\udce9 Email\uff1aservice@dinghongtransformer.com<\/p>\n\n\n\n
\ud83c\udf10<\/strong>web\uff1ahttps:\/\/dinghongtransformer.com\/<\/p>","protected":false},"excerpt":{"rendered":"Learn essential transformer maintenance practices, including inspections, oil testing, temperature monitoring, cooling checks and preventive maintenance.<\/p>","protected":false},"author":4,"featured_media":38378,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,101],"tags":[],"class_list":["post-38381","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-grid-distribution"],"yoast_head":"\n
How to Maintain an Electrical Transformer for Longer Service Life. - Dinghongtransformer<\/title>\n<meta name=\"description\" content=\"Learn essential transformer maintenance practices, including inspections, oil testing, temperature monitoring, cooling checks and preventive maintenance.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dinghongtransformer.com\/ru\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Maintain an Electrical Transformer for Longer Service Life. - Dinghongtransformer\" \/>\n<meta property=\"og:description\" content=\"Learn essential transformer maintenance practices, including inspections, oil testing, temperature monitoring, cooling checks and preventive maintenance.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dinghongtransformer.com\/ru\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/\" \/>\n<meta property=\"og:site_name\" content=\"Dinghongtransformer\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-21T06:12:41+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-08T08:38:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/08\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1536\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Benneth Benneth\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u043e\u043c\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benneth Benneth\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u041f\u0440\u0438\u043c\u0435\u0440\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 \u043c\u0438\u043d\u0443\u0442\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/\"},\"author\":{\"name\":\"Benneth Benneth\",\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/#\\\/schema\\\/person\\\/4e252db88c060fac7e24a44071d8b405\"},\"headline\":\"How to Maintain an Electrical Transformer for Longer Service Life.\",\"datePublished\":\"2026-08-21T06:12:41+00:00\",\"dateModified\":\"2026-09-08T08:38:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/\"},\"wordCount\":1780,\"image\":{\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/dinghongtransformer.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png\",\"articleSection\":[\"Blog\",\"Grid & Distribution\"],\"inLanguage\":\"ru-RU\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/\",\"url\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/\",\"name\":\"How to Maintain an Electrical Transformer for Longer Service Life. - Dinghongtransformer\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/dinghongtransformer.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png\",\"datePublished\":\"2026-08-21T06:12:41+00:00\",\"dateModified\":\"2026-09-08T08:38:16+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/#\\\/schema\\\/person\\\/4e252db88c060fac7e24a44071d8b405\"},\"description\":\"Learn essential transformer maintenance practices, including inspections, oil testing, temperature monitoring, cooling checks and preventive maintenance.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/#breadcrumb\"},\"inLanguage\":\"ru-RU\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ru-RU\",\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/#primaryimage\",\"url\":\"https:\\\/\\\/dinghongtransformer.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png\",\"contentUrl\":\"https:\\\/\\\/dinghongtransformer.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png\",\"width\":1536,\"height\":1024},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/blog\\\/how-to-maintain-an-electrical-transformer-for-longer-service-life\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/dinghongtransformer.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How to Maintain an Electrical Transformer for Longer Service Life.\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/#website\",\"url\":\"https:\\\/\\\/dinghongtransformer.com\\\/\",\"name\":\"Dinghongtransformer\",\"description\":\"DHDL manufactures transformers, high and low voltage distribution cabinets, prefabricated substations, energy storage cabinets and EV charging equipment for utility, industrial and new energy projects worldwide.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/dinghongtransformer.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ru-RU\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/dinghongtransformer.com\\\/#\\\/schema\\\/person\\\/4e252db88c060fac7e24a44071d8b405\",\"name\":\"Benneth Benneth\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ru-RU\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/661cbcc64e11de0e428d9edc40b84a24ef32cd2cc06c15863f52027d6c598326?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/661cbcc64e11de0e428d9edc40b84a24ef32cd2cc06c15863f52027d6c598326?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/661cbcc64e11de0e428d9edc40b84a24ef32cd2cc06c15863f52027d6c598326?s=96&d=mm&r=g\",\"caption\":\"Benneth Benneth\"},\"url\":\"https:\\\/\\\/dinghongtransformer.com\\\/ru\\\/author\\\/benneth\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How to Maintain an Electrical Transformer for Longer Service Life. - Dinghongtransformer","description":"Learn essential transformer maintenance practices, including inspections, oil testing, temperature monitoring, cooling checks and preventive maintenance.","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:\/\/dinghongtransformer.com\/ru\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/","og_locale":"ru_RU","og_type":"article","og_title":"How to Maintain an Electrical Transformer for Longer Service Life. - Dinghongtransformer","og_description":"Learn essential transformer maintenance practices, including inspections, oil testing, temperature monitoring, cooling checks and preventive maintenance.","og_url":"https:\/\/dinghongtransformer.com\/ru\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/","og_site_name":"Dinghongtransformer","article_published_time":"2026-08-21T06:12:41+00:00","article_modified_time":"2026-09-08T08:38:16+00:00","og_image":[{"width":1536,"height":1024,"url":"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/08\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png","type":"image\/png"}],"author":"Benneth Benneth","twitter_card":"summary_large_image","twitter_misc":{"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u043e\u043c":"Benneth Benneth","\u041f\u0440\u0438\u043c\u0435\u0440\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f":"8 \u043c\u0438\u043d\u0443\u0442"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/#article","isPartOf":{"@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/"},"author":{"name":"Benneth Benneth","@id":"https:\/\/dinghongtransformer.com\/#\/schema\/person\/4e252db88c060fac7e24a44071d8b405"},"headline":"How to Maintain an Electrical Transformer for Longer Service Life.","datePublished":"2026-08-21T06:12:41+00:00","dateModified":"2026-09-08T08:38:16+00:00","mainEntityOfPage":{"@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/"},"wordCount":1780,"image":{"@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/#primaryimage"},"thumbnailUrl":"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/08\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png","articleSection":["Blog","Grid & Distribution"],"inLanguage":"ru-RU"},{"@type":"WebPage","@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/","url":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/","name":"How to Maintain an Electrical Transformer for Longer Service Life. - Dinghongtransformer","isPartOf":{"@id":"https:\/\/dinghongtransformer.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/#primaryimage"},"image":{"@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/#primaryimage"},"thumbnailUrl":"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/08\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png","datePublished":"2026-08-21T06:12:41+00:00","dateModified":"2026-09-08T08:38:16+00:00","author":{"@id":"https:\/\/dinghongtransformer.com\/#\/schema\/person\/4e252db88c060fac7e24a44071d8b405"},"description":"Learn essential transformer maintenance practices, including inspections, oil testing, temperature monitoring, cooling checks and preventive maintenance.","breadcrumb":{"@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/#breadcrumb"},"inLanguage":"ru-RU","potentialAction":[{"@type":"ReadAction","target":["https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/"]}]},{"@type":"ImageObject","inLanguage":"ru-RU","@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/#primaryimage","url":"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/08\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png","contentUrl":"https:\/\/dinghongtransformer.com\/wp-content\/uploads\/2026\/08\/153CCB17-D5DD-4E51-A4D2-A3ADADD750C0.png","width":1536,"height":1024},{"@type":"BreadcrumbList","@id":"https:\/\/dinghongtransformer.com\/blog\/how-to-maintain-an-electrical-transformer-for-longer-service-life\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/dinghongtransformer.com\/"},{"@type":"ListItem","position":2,"name":"How to Maintain an Electrical Transformer for Longer Service Life."}]},{"@type":"WebSite","@id":"https:\/\/dinghongtransformer.com\/#website","url":"https:\/\/dinghongtransformer.com\/","name":"Dinghongtransformer","description":"DHDL \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442 \u0442\u0440\u0430\u043d\u0441\u0444\u043e\u0440\u043c\u0430\u0442\u043e\u0440\u044b, \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0448\u043a\u0430\u0444\u044b \u0432\u044b\u0441\u043e\u043a\u043e\u0433\u043e \u0438 \u043d\u0438\u0437\u043a\u043e\u0433\u043e \u043d\u0430\u043f\u0440\u044f\u0436\u0435\u043d\u0438\u044f, \u043a\u043e\u043c\u043f\u043b\u0435\u043a\u0442\u043d\u044b\u0435 \u0442\u0440\u0430\u043d\u0441\u0444\u043e\u0440\u043c\u0430\u0442\u043e\u0440\u043d\u044b\u0435 \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u0446\u0438\u0438, \u0448\u043a\u0430\u0444\u044b \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u0435\u0439 \u044d\u043d\u0435\u0440\u0433\u0438\u0438 \u0438 \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0435 \u0434\u043b\u044f \u0437\u0430\u0440\u044f\u0434\u043a\u0438 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043c\u043e\u0431\u0438\u043b\u0435\u0439 \u0434\u043b\u044f \u044d\u043d\u0435\u0440\u0433\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445, \u043f\u0440\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432 \u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u0432\u043e\u0437\u043e\u0431\u043d\u043e\u0432\u043b\u044f\u0435\u043c\u044b\u0445 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u0432 \u044d\u043d\u0435\u0440\u0433\u0438\u0438 \u043f\u043e \u0432\u0441\u0435\u043c\u0443 \u043c\u0438\u0440\u0443.","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/dinghongtransformer.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ru-RU"},{"@type":"Person","@id":"https:\/\/dinghongtransformer.com\/#\/schema\/person\/4e252db88c060fac7e24a44071d8b405","name":"Benneth Benneth","image":{"@type":"ImageObject","inLanguage":"ru-RU","@id":"https:\/\/secure.gravatar.com\/avatar\/661cbcc64e11de0e428d9edc40b84a24ef32cd2cc06c15863f52027d6c598326?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/661cbcc64e11de0e428d9edc40b84a24ef32cd2cc06c15863f52027d6c598326?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/661cbcc64e11de0e428d9edc40b84a24ef32cd2cc06c15863f52027d6c598326?s=96&d=mm&r=g","caption":"Benneth Benneth"},"url":"https:\/\/dinghongtransformer.com\/ru\/author\/benneth\/"}]}},"_links":{"self":[{"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/posts\/38381","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/comments?post=38381"}],"version-history":[{"count":4,"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/posts\/38381\/revisions"}],"predecessor-version":[{"id":38637,"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/posts\/38381\/revisions\/38637"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/media\/38378"}],"wp:attachment":[{"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/media?parent=38381"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/categories?post=38381"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dinghongtransformer.com\/ru\/wp-json\/wp\/v2\/tags?post=38381"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}