{"id":1536,"date":"2019-09-26T16:17:17","date_gmt":"2019-09-26T15:17:17","guid":{"rendered":"https:\/\/www.weidmann-group.com\/news\/save-cost-buy-quality-preserve-transformer-lifetime\/"},"modified":"2026-05-07T21:47:50","modified_gmt":"2026-05-07T20:47:50","slug":"save-cost-buy-quality-preserve-transformer-lifetime","status":"publish","type":"post","link":"https:\/\/www.weidmann-group.com\/de\/news\/save-cost-buy-quality-preserve-transformer-lifetime\/","title":{"rendered":"Save Cost, Buy Quality &#8211; Preserve Transformer Lifetime"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>\u201cSave cost \u2013 buy quality\u201d was a Weidmann slogan many years ago. Since then, the cost pressure in the industry has increased dramatically; yet the slogan&nbsp;remains&nbsp;true to its word.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Stakeholders in the transformer industry are under substantial cost pressure, which&nbsp;in turn&nbsp;is passed on to suppliers.&nbsp;Participants&nbsp;in the supply chain do their&nbsp;best to minimize costs&nbsp;and present an attractive offer.&nbsp;However, this competition has led to a sharp drop in the price per MVA transformer rating.&nbsp;As in other areas of the market, the cost savings are not based solely on efficiency gains. Often it is sustainability that suffers.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Over the years it has become evident&nbsp;that IEC 61061 plywood,&nbsp;rather than&nbsp;IEC 60763 laminated pressboard,&nbsp;is increasingly being used as the base material for&nbsp;products such as&nbsp;clamping rings, press elements, beams, cleat systems&nbsp;and&nbsp;bolted joints.&nbsp;However, this apparent&nbsp;attempt at&nbsp;cost saving has revealed a negative side.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In 2017, a study presented at a CIGRE A2 Transformers Colloquium (*) shared&nbsp;the results of the accelerated ageing experiment which compared plywood with laminated pressboard (carried out according to the IEC 62332-2 standard). The insulating paper under investigation was aged in inhibited mineral oil together with copper and magnetic steel, along with either plywood or laminated pressboard and other insulating materials. It was observed that the paper aged significantly faster in&nbsp;the&nbsp;presence of plywood in comparison with laminated pressboard. When the results were converted into transformer operation according to the standard, the paper lifetime reduction using plywood was as much as 60\u201370 %. The difference is believed to be the formation and leaching of acids and water as plywood ages. In contrast, the high purity of laminated pressboard with its low lignin content and freeness of resins, means&nbsp;it was preserved for longer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In summary, the&nbsp;savings that transformer owners&nbsp;gain&nbsp;by not specifying laminated pressboard in their products are negated over time by oil contamination through acids and associated accelerated cellulose aging, premature sludge formation and, ultimately, early transformer replacement.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(*) L. Dreier, M. Jashari, Ch.&nbsp;Krause, T. Prevost, \u201cThe impact of laminated cellulosic products on transformer lifetime\u201d, Cigr\u00e9 A2 Transformer Colloquium, Cracow, 2017.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u201cSave cost \u2013 buy quality\u201d was a Weidmann slogan many years ago. Since then, the cost pressure in the industry has increased dramatically; yet the slogan&nbsp;remains&nbsp;true to its word. Stakeholders in the transformer industry are under substantial cost pressure, which&nbsp;in turn&nbsp;is passed on to suppliers.&nbsp;Participants&nbsp;in the supply chain do their&nbsp;best to minimize costs&nbsp;and present an [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":3125,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[34],"tags":[],"class_list":["post-1536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-insight-de"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Save Cost, Buy Quality - Preserve Transformer Lifetime - Weidmann Group<\/title>\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.weidmann-group.com\/de\/news\/save-cost-buy-quality-preserve-transformer-lifetime\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Save Cost, Buy Quality - Preserve Transformer Lifetime - Weidmann Group\" \/>\n<meta property=\"og:description\" content=\"\u201cSave cost \u2013 buy quality\u201d was a Weidmann slogan many years ago. Since then, the cost pressure in the industry has increased dramatically; yet the slogan&nbsp;remains&nbsp;true to its word. 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