{"id":796,"date":"2021-07-02T14:49:37","date_gmt":"2021-07-02T17:49:37","guid":{"rendered":"https:\/\/testedeprojeto.com.br\/nishi\/?p=796"},"modified":"2021-08-31T17:26:30","modified_gmt":"2021-08-31T20:26:30","slug":"aging-of-the-insulation-system","status":"publish","type":"post","link":"https:\/\/nishi.com.br\/novo\/en\/aging-of-the-insulation-system\/","title":{"rendered":"AGING OF THE INSULATION SYSTEM"},"content":{"rendered":"

The useful life of an electrical machine is commonly associated with the service life of the insulation material, especially in large machines, as we have covered in previous articles.<\/p>\n

The failure of the insulator is usually the result of a gradual deterioration, over time, which we call aging. Aging is basically the result of different stresses: thermal; thermo-mechanical; mechanical; electrical; and environmental, which act simultaneously in operation. The insulating system can change its behavior as a function of the various types of “over stresses” when compared with the behavior of normal aging.<\/p>\n

The insulation system in large machines is one of the most important parts because of the high manufacturing and maintenance costs. Around 40% of the failures in large machines are due to the high-voltage insulating systems, according to research.<\/p>\n

The study of the behavior of insulating material subjected to different stresses during its operation is very important to improve the design\/process and the quality of the insulating system and thus avoid early aging.<\/p>\n

One of the most common tests for approval in coil manufacturing is the VET – “Voltage Endurance Test”, according to IEEE 1043 (test method) and IEEE 1553 (acceptance criteria). This test simulates an accelerated aging through thermal and electrical stress simultaneously, in a test room, with 4 (four) prototype coils. Only after its approval the process is approved and released for coil manufacturing.<\/p>\n

Contact our team and get to know the techniques to evaluate the insulation system and which is the best coil manufacturing project\/process for your equipment.<\/p>\n","protected":false},"excerpt":{"rendered":"

The useful life of an electrical machine is commonly associated […]<\/p>\n","protected":false},"author":1,"featured_media":401,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[68,66,64,61,62,69],"tags":[],"class_list":["post-796","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-coils","category-corrective-maintenance","category-gca-3","category-mca-3","category-mcag-3","category-roebel-bars"],"yoast_head":"\nAGING OF THE INSULATION SYSTEM - Nishi<\/title>\n<meta name=\"description\" content=\"The failure of the insulator is usually the result of a gradual deterioration, over time, which we call aging. Aging is basically the result of different stresses: thermal; thermo-mechanical; mechanical; electrical; and environmental, which act simultaneously in operation. 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