{"id":31305,"date":"2024-11-13T11:43:53","date_gmt":"2024-11-13T10:43:53","guid":{"rendered":"https:\/\/ecol.eu\/en\/knowledge-base\/"},"modified":"2025-07-07T12:21:33","modified_gmt":"2025-07-07T10:21:33","slug":"oil-change-in-transformers-stages-pitfalls-challenges","status":"publish","type":"post","link":"https:\/\/ecol.eu\/en\/knowledge-base\/oil-change-in-transformers-stages-pitfalls-challenges","title":{"rendered":"Oil change in transformers \u2013 stages, pitfalls, challenges"},"content":{"rendered":"<header class=\"page-hero alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <div class=\"col-lg-7 offset-lg-1 page-hero__text\">\n\n        <nav aria-label=\"Okruszki\" role=\"navigation\">\n  <ul class=\"breadcrumbs\" aria-label=\"lista okruszk\u00f3w\">\n\n    \n      <li class=\"breadcrumbs__item\">\n\n                  <a href=\"https:\/\/ecol.eu\/en\/\" class=\"breadcrumbs__link\">Home page<\/a>\n        \n      <\/li>\n\n    \n  <\/ul>\n<\/nav>\n\n        <h1 class=\"heading heading--sb\">Oil change in transformers \u2013 stages, pitfalls, challenges <\/h1>\n\n        \n      <\/div>\n\n      <ul class=\"col-lg-7 offset-lg-1 links\" data-links><\/ul>\n\n    <\/div>\n\n    \n      <svg class=\"page-hero__bg page-hero__bg--oil\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" viewBox=\"0 0 1008.86 1257.26\"><defs><style>.cls-1{stroke-width:.5px;}.cls-1,.cls-2,.cls-3,.cls-4,.cls-5,.cls-6{fill:none;}.cls-1,.cls-2,.cls-3,.cls-4,.cls-6{stroke:#1d1d1b;stroke-miterlimit:10;}.cls-2{stroke-width:.49px;}.cls-3{stroke-width:.75px;}.cls-7{clip-path:url(#clippath-1);}.cls-8{clip-path:url(#clippath);}.cls-6{stroke-width:.24px;}<\/style><clipPath id=\"clippath\"><rect class=\"cls-5\" x=\"95.78\" y=\"507.26\" width=\"913.07\" height=\"750\"\/><\/clipPath><clipPath id=\"clippath-1\"><rect class=\"cls-5\" x=\"95.78\" y=\"507.26\" width=\"913.07\" height=\"750\"\/><\/clipPath><\/defs><g><ellipse class=\"cls-4\" 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<\/div>\n<\/header>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"normal-content alignwide \">\n  <div class=\"container\">\n    <div class=\"row justify-content-center\">\n\n\t    \n\t\t    <div class=\"col-xl-5 col-lg-6 normal-content__image-wrapper\">\n\n\t\t\t    \t\t\t\t    <img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/wymiana-olejow-w-transformatorach-1.webp\" class=\"normal-content__image\" alt=\"wymiana-olejow-w-transformatorach (1)\" loading=\"lazy\">\n\t\t\t    \n\t\t    <\/div>\n\t\t    <div class=\"col-xl-5 col-lg-6 normal-content__text\">\n\t\t\t    <div class=\"normal-content__text-wrapper\">\n\n\t\t\t\t    \n\t\t\t\t\t    <h2 class=\"heading heading--line\">electrical transformer \u2013 role and application<\/h2>\n\n\t\t\t\t    \n\t\t\t\t    \n\t\t\t\t\t    <h3 class=\"heading\">conversion, transmission and distribution of electricity<\/h3>\n\n\t\t\t\t    \n\t\t\t\t    \n\t\t\t\t\t    <p class=\"desc\">Transformers are an integral part of the electricity system, enabling the conversion, transmission and distribution of electricity. <br><br>They work on the principle of electromagnetic induction and their function is to change the voltage and current values while maintaining the same frequency and with as little energy loss as possible. An essential design element of any high-power transformer is the electrical insulating oil.<\/p>\n\n\t\t\t\t    \n\t\t\t\t    \n\t\t\t    <\/div>\n\t\t    <\/div>\n\n\t\t\t\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <h3 class=\"post__header heading heading--line\">electrical transformers \u2013 the hidden power of power grids<\/h3>\n<p class=\"post__paragraph\">Why their role is bigger than you think? Oil in a\u00a0transformer is a\u00a0key element in providing winding insulation and heat transfer. Thanks to its properties, transformer oil protects the transformer from external influences by penetrating all its spaces. Oil is also a\u00a0carrier of information about the operating status of the transformer. <\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <h3 class=\"post__header heading heading--line\">transformer oil testing \u2013 the key to equipment longevity<\/h3>\n<p class=\"post__paragraph\">Electrical insulating oil is the \u201cbloodstream\u201d of the transformer, carrying information on the condition of the oil and the equipment. Examination of the oil allows potential problems to be anticipated, so that appropriate maintenance and service measures can be taken and the quality and suitability of the oil for further use can be assessed.<\/p>\n<p class=\"post__paragraph\">Oil testing should be carried out by a\u00a0specialised laboratory with a\u00a0metrological and quality supervision system in place.<\/p>\n<p class=\"post__paragraph\">Proper oil sampling procedures and transport are important. Ideally, oil samples should reach the laboratory within 24 hours of collection, as too long storage time and the influence of atmospheric factors such as moisture, temperature and sunlight can falsify test results.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1376\" height=\"1097\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/ocena-zalecenia-probek-eng.png\" alt=\"\" class=\"wp-image-31306\" style=\"width:669px;height:auto\" srcset=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/ocena-zalecenia-probek-eng.png 1376w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/ocena-zalecenia-probek-eng-300x239.png 300w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/ocena-zalecenia-probek-eng-1024x816.png 1024w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/ocena-zalecenia-probek-eng-768x612.png 768w\" sizes=\"auto, (max-width: 1376px) 100vw, 1376px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <p class=\"post__paragraph\">As part of the physico-chemical properties test, the dielectric properties, the degree of moisture in the insulating system and oil ageing, among others, are checked. Dissolved gas analysis and diagnostics (DGA) allow early detection of possible damage or abnormalities. Testing for furan compounds provides an estimate of the condition of the transformer\u2019s paper insulation, which is an important factor influencing decisions on further maintenance measures.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <h2 class=\"post__header heading heading--line\">a guide to filling transformers with oil: 9 steps that must not be missed<\/h2>\n<p class=\"post__paragraph\">The procedure for filling transformers under vacuum aims to properly impregnate the paper insulation, guaranteeing the required low level of incomplete discharge and maintaining a\u00a0low degree of moisture.<\/p>\n<p>The process of filling a\u00a0transformer with oil varies depending on the type of equipment, its capacity and intended use. Oil values, vacuum depths, filling speeds and other factors vary from case to case, requiring appropriate measures and procedures.<br>\n\u00a0<\/p>\n<h3 class=\"post__header heading heading--line\">the key steps in the process of filling a\u00a0transformer with electrical insulating oil include:<\/h3>\n<ul class=\"post__list post__list--nonordered\">\n<li class=\"post__list-item\"><b>1.<\/b> Checking the technical condition of the unit before commencing work.<\/li>\n<li class=\"post__list-item\"><b>2.<\/b> Checking valve settings and connecting vacuum generation and measuring equipment.<\/li>\n<li class=\"post__list-item\"><b>3.<\/b> Generating and controlling the vacuum in accordance with the manufacturer\u2019s procedure.<\/li>\n<li class=\"post__list-item\"><b>4.<\/b> Preparing oil for filling and ongoing monitoring of its parameters.<\/li>\n<li class=\"post__list-item\"><b>5.<\/b> Installation of connections and preparation of the transformer for oil filling.<\/li>\n<li class=\"post__list-item\"><b>6.<\/b> Filling with oil while maintaining vacuum.<\/li>\n<li class=\"post__list-item\"><b>7.<\/b> Removing the vacuum and treating the oil in the vat to eliminate gases and contaminants.<\/li>\n<li class=\"post__list-item\"><b>8.<\/b> Analysis of oil samples and confirmation of oil quality after filling.<\/li>\n<li class=\"post__list-item\"><b>9.<\/b> Venting the system and taking final samples for further testing.<\/li>\n<\/ul>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <h2 class=\"post__header heading heading--line\">challenges when changing transformer oil: 3 biggest pitfalls<\/h2>\n<p class=\"post__paragraph\">Filling transformers with oil presents a\u00a0number of challenges. Among the most common are unit leakage problems, the impact of weather conditions and logistical issues related to oil storage. It is also important to properly prepare the workplace and coordinate with the services responsible for maintaining order and security.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <p class=\"post__paragraph\">\u00a0<\/p>\n<h3 class=\"post__header heading heading--line\">key challenges that are important for the proper operation of the transformer:<\/h3>\n<ul class=\"post__list post__list--nonordered\">\n<li class=\"post__list-item\"><b>1. Oil moisture control<\/b><\/li>\n<p class=\"post__paragraph\">During filling and subsequent operation of the transformer, a\u00a0very low moisture content in the oil is required \u2013 at just a\u00a0few ppm. Oil has a\u00a0natural tendency to absorb moisture from its surroundings, forcing the construction of a\u00a0sealed system. Any \u201cbreather\u201d points should be protected by filters with moisture absorbers to minimise the risk of water entering the system.<\/p>\n<li class=\"post__list-item\"><b>2. Minimising oil gassing during transfer<\/b><\/li>\n<p class=\"post__paragraph\">Oil transfer processes, e.g. from transport tanks to vats, should be carried out in such a\u00a0way as to reduce oil gassing. Dissolved gases can affect oil performance, so it is necessary to keep them low.<\/p>\n<li class=\"post__list-item\"><b>3. Required oil temperature<\/b><\/li>\n<p class=\"post__paragraph\">Transformer manufacturers often specify that the oil temperature during filling should be higher than 50\u00b0C. In winter, maintaining this temperature requires appropriate heating systems and insulation of system components. It is also often necessary to ensure the correct ambient temperature for process support machinery, such as pumps or aggregates.<\/p><\/ul>\n<p class=\"post__paragraph\">It is possible to remove water and gases during vacuum treatment of oil, but inadequate technology can further increase their content and cause oil degradation. This has the effect of prolonging the processing time and completion of the entire project, which can generate additional costs and downtime.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:59px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"470\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/wymiana-olejow-w-transformatorach-4-1024x470.webp\" alt=\"\" class=\"wp-image-31269\" style=\"width:784px;height:auto\" srcset=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/wymiana-olejow-w-transformatorach-4-1024x470.webp 1024w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/wymiana-olejow-w-transformatorach-4-300x138.webp 300w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/wymiana-olejow-w-transformatorach-4-768x353.webp 768w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/wymiana-olejow-w-transformatorach-4-1536x705.webp 1536w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/wymiana-olejow-w-transformatorach-4.webp 2017w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <h2 class=\"post__header heading heading--line\">experience is key \u2013 how does Ecol handle the most difficult oil changes in transformers?<\/h2>\n<p class=\"post__paragraph\">Ecol has extensive experience in complex transformer oil replacement and filling, carrying out projects of varying complexity and conditions. The company has carried out work both in the open air and in difficult underground locations, as in the case of the Por\u0105bka-\u017bar power plant, where the process of processing and transporting oil into the mountain required precise planning and specialised equipment.<\/p>\n<p class=\"post__paragraph\">In implementations at industrial plants such as nitrogen plants, the company has filled new large-capacity transformers using specialised vacuum units and centrifugal separators, ensuring oil quality control at every stage of the process. In projects carried out on the construction of the CCGT gas blocks or combined heat and power plants, Ecol has demonstrated its ability to manage the entire process \u2013 from oil preparation, to oil processing, to final quality testing. The company has successfully dealt with challenges such as transformer integrity and oil temperature optimisation, adapting its methods to the specific technical requirements of each project.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:45px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"600\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/eng_statystyki-transformatorowe.webp\" alt=\"\" class=\"wp-image-31321\" style=\"width:822px;height:auto\" srcset=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/eng_statystyki-transformatorowe.webp 1000w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/eng_statystyki-transformatorowe-300x180.webp 300w, https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/eng_statystyki-transformatorowe-768x461.webp 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/div>\n\n\n<div style=\"height:45px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<section class=\"editor alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n      <article class=\"offset-lg-2 col-xl-9 col-lg-10 editor__text\">\n\n        \n          \n            \n\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t      \n\t\t\t\t\t\t      \t\t\t\t\t\t\t      <div class=\"post\">\n\t\t\t\t\t\t\t\t      <p class=\"post__paragraph\">Ecol stands out in the market as a\u00a0provider of comprehensive and professional transformer oil change services. Choosing our company is an investment in the long-term trouble-free operation of electrical power equipment. What we offer:<\/p>\n<h3 class=\"post__header heading heading--line\">comprehensive service from top to bottom<\/h3>\n<p class=\"post__paragraph\">Our offer includes not only the oil filling itself, but also comprehensive preparation of the equipment for the process. We supply oil of the highest quality, perform laboratory analyses and supervise the entire process. This provides the customer with a\u00a0full service to minimise the risk of failure and extend the life of the transformer.<\/p>\n<h3 class=\"post__header heading heading--line\">extensive experience in a\u00a0variety of conditions<\/h3>\n<p class=\"post__paragraph\">We have experience of working in a\u00a0wide range of weather conditions \u2013 we carry out services in cold temperatures below 0\u00b0C as well as in the heat of summer, in the rain, on construction sites without access to utilities, as well as outdoors and underground. We operate on new and in-service equipment of varying power and technical specifications. This enables us to address the individual needs of each client.<\/p>\n<p class=\"post__paragraph\">By choosing Ecol, you can be sure that the oil change process will be carried out in accordance with the highest standards and procedures, and that the systematic testing of oil quality will allow the transformer to work for a\u00a0long time without failures.<\/p>\n\n\t\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t      \t\t\t\t\t      <\/div>\n                \n          \n        \n      <\/article>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"contact-persons alignwide\">\n  <div class=\"container\">\n    <div class=\"row\">\n\n      <div class=\"offset-lg-2 offset-md-0 col-lg-8\">\n\n        \n          <h2 class=\"heading heading--line\">contact<\/h2>\n\n        \n        \n          <h3 class=\"heading heading--large\">do you have questions about the service?<\/h3>\n\n        \n        \n          <p class=\"desc\">contact us directly:<\/p>\n\n        \n      <\/div>\n\n      \n        <ul class=\"offset-lg-2 offset-md-0 col-lg-9 listing\">\n\n          \n            \n            <li class=\"listing__item\">\n\n\t            \n\t\t\t\t\t\t\t\t<div class=\"listing__inner-wrapper\">\n\t\t\t\t\t\t\t\t\t<div class=\"listing__image-wrapper\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/drudka.png\" class=\"listing__image\" alt=\"\" loading=\"lazy\">\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"listing__inner-details\">\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"listing__heading heading heading--b\">Dominik Rudka<\/h3>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<p class=\"listing__position\">Chief Engineer for Lubrication Service<\/p>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"tel:+48608507974\" class=\"listing__link\" target=\"\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M13.1403 9.8875C13.1044 9.85906 10.5 7.98175 9.78512 8.1165C9.44387 8.17688 9.24875 8.40963 8.85719 8.87556C8.79419 8.95081 8.64281 9.13106 8.52513 9.25925C8.27767 9.17854 8.03629 9.08029 7.80281 8.96525C6.59773 8.37857 5.62406 7.4049 5.03737 6.19981C4.92225 5.96637 4.824 5.72498 4.74337 5.4775C4.872 5.35938 5.05225 5.208 5.12925 5.14325C5.593 4.75387 5.82619 4.55875 5.88656 4.21662C6.01038 3.50787 4.13437 0.8855 4.11469 0.861875C4.02957 0.740281 3.91849 0.639127 3.78948 0.565733C3.66047 0.492338 3.51676 0.448537 3.36875 0.4375C2.60837 0.4375 0.4375 3.25369 0.4375 3.72794C0.4375 3.7555 0.477313 6.55725 3.93225 10.0717C7.44319 13.5227 10.2445 13.5625 10.2721 13.5625C10.7467 13.5625 13.5625 11.3916 13.5625 10.6312C13.5516 10.4838 13.508 10.3405 13.435 10.2119C13.362 10.0833 13.2614 9.97248 13.1403 9.8875Z\" fill=\"black\"\/>\n<\/svg>\n608 507 974<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n                    \n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"mailto:d.rudka@ecol.eu\" class=\"listing__link\" target=\"\"><svg width=\"14\" height=\"14\" viewBox=\"0 0 14 14\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <g clip-path=\"url(#clip0_447_7182)\">\n    <path d=\"M8.17001 8.57754C7.82171 8.80974 7.41713 8.93249 7 8.93249C6.5829 8.93249 6.17832 8.80974 5.83002 8.57754L0.0932148 4.75289C0.0613867 4.73167 0.0303789 4.70955 0 4.6868V10.9539C0 11.6724 0.583105 12.2427 1.28879 12.2427H12.7112C13.4297 12.2427 14 11.6596 14 10.9539V4.68677C13.9695 4.70957 13.9385 4.73175 13.9066 4.75299L8.17001 8.57754Z\" fill=\"black\"\/>\n    <path d=\"M0.548242 4.07039L6.28504 7.89507C6.50221 8.03985 6.75109 8.11223 6.99997 8.11223C7.24888 8.11223 7.49779 8.03982 7.71496 7.89507L13.4518 4.07039C13.7951 3.84166 14 3.45884 14 3.04568C14 2.33526 13.422 1.75732 12.7116 1.75732H1.28836C0.577965 1.75735 0 2.33529 0 3.04636C0 3.45884 0.204969 3.84166 0.548242 4.07039Z\" fill=\"black\"\/>\n  <\/g>\n  <defs>\n    <clipPath id=\"clip0_447_7182\">\n      <rect width=\"14\" height=\"14\" fill=\"white\"\/>\n    <\/clipPath>\n  <\/defs>\n<\/svg>\nd.rudka@ecol.eu<\/a>\n\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\n\t\t\t\t\t\t\t\n            <\/li>\n\n          \n        <\/ul>\n\n      \n    <\/div>\n  <\/div>\n<\/section>\n\n\n<section class=\"news alignwide\">\n  <div class=\"container\">\n    <div class=\"row justify-content-center\">\n      <div class=\"offset-lg-2 col-lg-10\">\n\n        \n          <h2 class=\"heading heading--line\">check also<\/h2>\n\n        \n      <\/div>\n\n      \n        <ul class=\"col-lg-10 news-list\">\n\n          \n            \n            <li class=\"news-list__item\">\n              <a href=\"https:\/\/ecol.eu\/en\/technologies-and-services\/diagnostic-services\/transformer-oil-testing-and-electrical-insulating-fluids-diagnostics\/\" class=\"news-list__inner news-list__inner--wide\">\n                <div class=\"news-list__image-wrapper\">\n                  <img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/02\/transformator_600-1-minnew.webp\" class=\"news-list__image\" alt=\"transformator_600-1-minnew\" loading=\"lazy\">\n                <\/div>\n                <div class=\"news-list__details\">\n                  <h3 class=\"heading heading--b\">Transformer oil testing and electrical insulating fluids diagnostics<\/h3>\n                  <p class=\"desc\">Transformer condition assessment service based on the Transformer Condition Assessment TCA\u00ae method.<\/p>\n                  <svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M4.16659 10.8333H14.0499L11.0249 14.4666C10.9549 14.5509 10.9021 14.6481 10.8697 14.7528C10.8372 14.8574 10.8257 14.9675 10.8357 15.0766C10.8561 15.2969 10.9631 15.5002 11.1333 15.6416C11.3034 15.7831 11.5228 15.8511 11.7432 15.8308C11.9635 15.8105 12.1668 15.7035 12.3083 15.5333L16.4749 10.5333C16.503 10.4935 16.528 10.4517 16.5499 10.4083C16.5499 10.3666 16.5916 10.3416 16.6083 10.3C16.646 10.2044 16.6658 10.1027 16.6666 9.99996C16.6658 9.89722 16.646 9.79551 16.6083 9.69996C16.6083 9.6583 16.5666 9.6333 16.5499 9.59163C16.528 9.54818 16.503 9.5064 16.4749 9.46663L12.3083 4.46663C12.2299 4.37256 12.1318 4.29691 12.0209 4.24506C11.91 4.19321 11.789 4.16643 11.6666 4.16663C11.4719 4.16625 11.2832 4.23406 11.1333 4.35829C11.0489 4.42825 10.9791 4.51417 10.928 4.61112C10.8769 4.70808 10.8454 4.81417 10.8353 4.92332C10.8252 5.03247 10.8368 5.14253 10.8693 5.2472C10.9019 5.35187 10.9547 5.44909 11.0249 5.53329L14.0499 9.16663H4.16659C3.94557 9.16663 3.73361 9.25443 3.57733 9.41071C3.42105 9.56699 3.33325 9.77895 3.33325 9.99996C3.33325 10.221 3.42105 10.4329 3.57733 10.5892C3.73361 10.7455 3.94557 10.8333 4.16659 10.8333Z\" fill=\"black\"\/>\n<\/svg>\n                <\/div>\n              <\/a>\n            <\/li>\n\n          \n            \n            <li class=\"news-list__item\">\n              <a href=\"https:\/\/ecol.eu\/en\/technologies-and-services\/diagnostic-services\/testing-of-oils-and-lubricants-performed-in-our-laboratory\/\" class=\"news-list__inner \">\n                <div class=\"news-list__image-wrapper\">\n                  <img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2022\/12\/ecol-badania-olejow-i-smarow-miniatura.webp\" class=\"news-list__image\" alt=\"ecol-badania-olejow-i-smarow-miniatura\" loading=\"lazy\">\n                <\/div>\n                <div class=\"news-list__details\">\n                  <h3 class=\"heading heading--b\">Analysis of oils and lubricants performed in our laboratory<\/h3>\n                  <p class=\"desc\">Recordings and descriptions of oil and lubricant tests performed in our laboratory.<\/p>\n                  <svg width=\"20\" height=\"20\" viewBox=\"0 0 20 20\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n  <path d=\"M4.16659 10.8333H14.0499L11.0249 14.4666C10.9549 14.5509 10.9021 14.6481 10.8697 14.7528C10.8372 14.8574 10.8257 14.9675 10.8357 15.0766C10.8561 15.2969 10.9631 15.5002 11.1333 15.6416C11.3034 15.7831 11.5228 15.8511 11.7432 15.8308C11.9635 15.8105 12.1668 15.7035 12.3083 15.5333L16.4749 10.5333C16.503 10.4935 16.528 10.4517 16.5499 10.4083C16.5499 10.3666 16.5916 10.3416 16.6083 10.3C16.646 10.2044 16.6658 10.1027 16.6666 9.99996C16.6658 9.89722 16.646 9.79551 16.6083 9.69996C16.6083 9.6583 16.5666 9.6333 16.5499 9.59163C16.528 9.54818 16.503 9.5064 16.4749 9.46663L12.3083 4.46663C12.2299 4.37256 12.1318 4.29691 12.0209 4.24506C11.91 4.19321 11.789 4.16643 11.6666 4.16663C11.4719 4.16625 11.2832 4.23406 11.1333 4.35829C11.0489 4.42825 10.9791 4.51417 10.928 4.61112C10.8769 4.70808 10.8454 4.81417 10.8353 4.92332C10.8252 5.03247 10.8368 5.14253 10.8693 5.2472C10.9019 5.35187 10.9547 5.44909 11.0249 5.53329L14.0499 9.16663H4.16659C3.94557 9.16663 3.73361 9.25443 3.57733 9.41071C3.42105 9.56699 3.33325 9.77895 3.33325 9.99996C3.33325 10.221 3.42105 10.4329 3.57733 10.5892C3.73361 10.7455 3.94557 10.8333 4.16659 10.8333Z\" fill=\"black\"\/>\n<\/svg>\n                <\/div>\n              <\/a>\n            <\/li>\n\n          \n            \n            <li class=\"news-list__item\">\n              <a href=\"https:\/\/ecol.eu\/en\/knowledge-base\/ecol-diagnostic-report-what-is-worth-knowing\" class=\"news-list__inner \">\n                <div class=\"news-list__image-wrapper\">\n                  <img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/06\/ecol-raport-laboratoryjny-m.png\" class=\"news-list__image\" alt=\"ecol-raport laboratoryjny-m\" loading=\"lazy\">\n                <\/div>\n                <div class=\"news-list__details\">\n                  <h3 class=\"heading heading--b\">Ecol diagnostic report &#8211; what is worth knowing?<\/h3>\n                  <p class=\"desc\">Key information on our diagnostic report.<\/p>\n                  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5.2472C10.9019 5.35187 10.9547 5.44909 11.0249 5.53329L14.0499 9.16663H4.16659C3.94557 9.16663 3.73361 9.25443 3.57733 9.41071C3.42105 9.56699 3.33325 9.77895 3.33325 9.99996C3.33325 10.221 3.42105 10.4329 3.57733 10.5892C3.73361 10.7455 3.94557 10.8333 4.16659 10.8333Z\" fill=\"black\"\/>\n<\/svg>\n                <\/div>\n              <\/a>\n            <\/li>\n\n          \n            \n            <li class=\"news-list__item\">\n              <a href=\"https:\/\/ecol.eu\/case-study\/badanie-oleju-elektroizolacyjnego-zespolu-transformatorowo-prostowniczego-zasilajacego-elektrofiltr\/\" class=\"news-list__inner \">\n                <div class=\"news-list__image-wrapper\">\n                  <img decoding=\"async\" src=\"https:\/\/ecol.eu\/wp-content\/uploads\/2023\/10\/zespol-transformatorowo-prostowniczy-zasilajacy-elektrofiltr.webp\" class=\"news-list__image\" alt=\"zesp\u00f3\u0142- transformatorowo-prostowniczy zasilaj\u0105cy elektrofiltr\" loading=\"lazy\">\n                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9.6333 16.5499 9.59163C16.528 9.54818 16.503 9.5064 16.4749 9.46663L12.3083 4.46663C12.2299 4.37256 12.1318 4.29691 12.0209 4.24506C11.91 4.19321 11.789 4.16643 11.6666 4.16663C11.4719 4.16625 11.2832 4.23406 11.1333 4.35829C11.0489 4.42825 10.9791 4.51417 10.928 4.61112C10.8769 4.70808 10.8454 4.81417 10.8353 4.92332C10.8252 5.03247 10.8368 5.14253 10.8693 5.2472C10.9019 5.35187 10.9547 5.44909 11.0249 5.53329L14.0499 9.16663H4.16659C3.94557 9.16663 3.73361 9.25443 3.57733 9.41071C3.42105 9.56699 3.33325 9.77895 3.33325 9.99996C3.33325 10.221 3.42105 10.4329 3.57733 10.5892C3.73361 10.7455 3.94557 10.8333 4.16659 10.8333Z\" fill=\"black\"\/>\n<\/svg>\n                <\/div>\n              <\/a>\n            <\/li>\n\n          \n        <\/ul>\n\n      \n      \n    <\/div>\n  <\/div>\n<\/section>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"Key information related to transformer oil change and testing.","protected":false},"author":3,"featured_media":31302,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[64,79],"tags":[],"class_list":["post-31305","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conventional-energy","category-lubrication-services"],"acf":[],"image":"https:\/\/ecol.eu\/wp-content\/uploads\/2024\/11\/wymiana-olejow-w-transformatorach-min.jpg","_links":{"self":[{"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/posts\/31305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/comments?post=31305"}],"version-history":[{"count":7,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/posts\/31305\/revisions"}],"predecessor-version":[{"id":31326,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/posts\/31305\/revisions\/31326"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/media\/31302"}],"wp:attachment":[{"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/media?parent=31305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/categories?post=31305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecol.eu\/en\/wp-json\/wp\/v2\/tags?post=31305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}