{"id":3623,"date":"2023-10-04T16:28:08","date_gmt":"2023-10-04T07:28:08","guid":{"rendered":"https:\/\/www.naccorporation.com\/en\/?post_type=electrical-knowledge&#038;p=3623"},"modified":"2023-10-04T16:28:31","modified_gmt":"2023-10-04T07:28:31","slug":"cable-harness-defects-foreign-matter-contamination-in-connectors","status":"publish","type":"electrical-knowledge","link":"https:\/\/www.naccorporation.com\/en\/learning-center\/electrical-knowledge\/3623","title":{"rendered":"[Cable &#038; Harness Defects]  Foreign matter contamination in connectors"},"content":{"rendered":"<div class=\"c-movie\">\r\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/sRjzwhzV3QU?si=tBn52w5ysvXXUz0-\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe>\r\n<\/div>\r\n\r\n<div class=\"c-spacer--s\">\r\n<p>\r\nForeign matter contamination is a manufacturing error commonly found in cables and harnesses. \r\nIn this video, we will show you how this error occurs and introduce an inspection to prevent outflow.\r\n<\/p>\r\n<\/div>\r\n\r\n<div class=\"c-spacer--s\">\r\n<h3>Why does \"Foreign matter contamination\" occur?<\/h3>\r\n<img loading=\"lazy\" src=\"https:\/\/www.naccorporation.com\/en\/wp-content\/uploads\/2023\/10\/A-1.jpg\"  alt=\"Foreign matter in the connector causing electrical errors for the cable\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<img loading=\"lazy\" src=\"https:\/\/www.naccorporation.com\/en\/wp-content\/uploads\/2023\/10\/B-1.jpg\"  alt=\"Prevent contamination of foreign matter by 5S\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<img loading=\"lazy\" src=\"https:\/\/www.naccorporation.com\/en\/wp-content\/uploads\/2023\/10\/D-1.jpg\"  alt=\"Wire sticks to wire stripper and gets mixed in with connectors\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n\r\n<\/br>\r\n<\/br>\r\n\r\n<p>\r\nWhen cables are routed to connectors, there is a possibility that foreign matter may get into.\r\nIn some cases, foreign matter can cause electrical problems.\r\nIn order to prevent contamination, it is first necessary to thoroughly implement 5S.\r\n\r\nForeign matter can get into unexpectedly. \r\nSome are so small and fine that they are invisible to the eye.\r\nTool maintenance is also important.\r\nWires attached to cable strippers may get in during processing.\r\nAppropriate brightness in the work area makes it easier to notice foreign matters.\r\n\r\nIt is also important to understand in which processes foreign matters are generated, and to consider when to reduce their generation and when to clean up.\r\n\r\nAssuming that foreign matters get into, testing is necessary to prevent outflow.\r\nImage inspection is a direct test for detecting foreign matters.\r\nHowever, its introduction is costly.\r\nIt is currently difficult to introduce highly accurate inspections from all angles.\r\n<\/p>\r\n\r\n<\/div>\r\n<h3>Detection by electrical cable harness testing<\/h3>\r\n<img loading=\"lazy\" src=\"https:\/\/www.naccorporation.com\/en\/wp-content\/uploads\/2023\/10\/E.png\"  alt=\"Foreign matter in the connector can be detected in the withstand voltage test electrically\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<img loading=\"lazy\" src=\"https:\/\/www.naccorporation.com\/en\/wp-content\/uploads\/2023\/10\/G-1.jpg\"  alt=\"Cable harness testers can perform withstand voltage test after wiring test\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<img loading=\"lazy\" src=\"https:\/\/www.naccorporation.com\/en\/wp-content\/uploads\/2023\/10\/F-1.jpg\"  alt=\"Foreign matter in the connector causes a discharge phenomenon.\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n\r\n<\/br>\r\n<\/br>\r\n\r\n<p>\r\nThere are five types of electrical cable harness testing.\r\nForeign matter contamination can be detected by dielectric withstand testing.\r\nThe harness tester can automatically perform the testing after the wiring testing, so the implementation is smooth.\r\n\r\nDielectric withstand testing detects discharge phenomenon in different conductors.\r\nIf foreign matter get into, discharge will occur through the foreign matter to a different conductor, resulting in an error.\r\n\r\nIf the withstand voltage failure is caused by foreign matter, blow air to remove the foreign matter and conduct the test again.\r\n\r\nForeign matter contamination can occur in the test adapters as well.\r\nIn many cases, connectors on circuit boards are installed facing upward, and foreign matters tend to accumulate between the terminals.\r\nPerform the maintenance on a regular basis.\r\n\r\nPlease contact us about cable harness testers and fixtures to prevent foreign matter contamination outflow.\r\n<\/p>\r\n\r\n<\/br><\/br>\r\n<a class=\"c-btn c-btn--l\" href=\"\/en\/products\">Click here for NMG+ Hi-Pot Cable Harness Tester<\/a>\r\n","protected":false},"author":19,"featured_media":3645,"menu_order":4,"template":"","meta":[],"electrical-knowledge-cat":[155],"electrical-knowledge-tag":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge\/3623"}],"collection":[{"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge"}],"about":[{"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/types\/electrical-knowledge"}],"author":[{"embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/users\/19"}],"version-history":[{"count":0,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge\/3623\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/media\/3645"}],"wp:attachment":[{"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/media?parent=3623"}],"wp:term":[{"taxonomy":"electrical-knowledge-cat","embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge-cat?post=3623"},{"taxonomy":"electrical-knowledge-tag","embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge-tag?post=3623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}