{"id":3571,"date":"2023-04-07T13:26:05","date_gmt":"2023-04-07T04:26:05","guid":{"rendered":"https:\/\/www.naccorporation.com\/en\/?post_type=electrical-knowledge&#038;p=3571"},"modified":"2023-04-07T13:26:05","modified_gmt":"2023-04-07T04:26:05","slug":"cable-harness-defect-cable-harness-testing-for-mis-gripping-of-strands","status":"publish","type":"electrical-knowledge","link":"https:\/\/www.naccorporation.com\/en\/learning-center\/electrical-knowledge\/3571","title":{"rendered":"[Cable &#038; Harness Defect] Cable Harness Testing for Mis-gripping of strands"},"content":{"rendered":"<div class=\"c-movie\">\r\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/iDzna4BycuQ\" 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>Mis-gripping of strands is a processing error in manufacturing cables and harnesses.\r\nIn this video, we will show you how this error occurs and inspections prevent outflows.<\/p>\r\n<\/div>\r\n\r\n<h3>Why does \"Mis-gripping of strands\" occur?<\/h3>\r\n<img loading=\"lazy\" src=\"\/en\/wp-content\/uploads\/2023\/04\/Mis-gripping-of-strands-at-cable-terminals.jpg\"  alt=\"Mis-gripping of strands at cable terminals\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<img loading=\"lazy\" src=\"\/en\/wp-content\/uploads\/2023\/04\/Mis-gripping-of-strands-is-a-processing-error-in-processing.jpg\"  alt=\"Mis-gripping of strands is a processing error in processing\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<img loading=\"lazy\" src=\"\/en\/wp-content\/uploads\/2023\/04\/Mis-gripping-of-strands-may-cause-unintended-short-circuit.jpg\"  alt=\"Mis-gripping of strands may cause unintended short circuit\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<\/br>\r\n<\/br>\r\n\r\n<p>\r\nMis-gripping of strands occurs when wires stripped or crimping are improper.\r\nThis defect may cause unintended shorts.\r\nAssembled connectors are used in the automotive industry. Retainers are used to prevent semi-insertion.\r\nMis-gripping of strands can cause entrapment of conductors, resulting in defects.\r\n\r\n<\/p>\r\n\r\n<div class=\"c-spacer--s\">\r\n<h3>Methods to check the terminals<\/h3>\r\n\r\n<p>\r\nCrimp force monitor detects pressure changes in crimping. \r\nIf the wires come out, the pressure changes and can be detected.\r\n\r\nA camera can also be used to detect the presence of the error optically.\r\nAfter the connector housing, the inside of the case can also be checked by X-ray.\r\n<\/p>\r\n\r\n<\/div>\r\n<h3>Detection by electrical cable harness testing<\/h3>\r\n<img loading=\"lazy\" src=\"\/en\/wp-content\/uploads\/2023\/04\/Generally-when-3000-Volts-is-applied-a-discharge-of-1-mm-occurs..png\"  alt=\"Generally, when 3000 Volts is applied, a discharge of 1 mm occurs.\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<img loading=\"lazy\" src=\"\/en\/wp-content\/uploads\/2023\/04\/It-determines-that-there-is-no-discharge-phenomenon-to-other-conductors.jpg\"  alt=\"It determines that there is no discharge phenomenon to other conductors\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<img loading=\"lazy\" src=\"https:\/\/www.naccorporation.com\/en\/wp-content\/uploads\/2023\/04\/Vibration-or-shock-is-applied-to-determine-if-a-short-circuit-occurs..jpg\"  alt=\"Vibration or shock is applied to determine if a short circuit occurs.\" width=\"280\" height=\"157.5\" padding=\"20\">\r\n<\/br>\r\n<\/br>\r\n\r\n\r\n<p>Electrical harness testing can detect if there are any error effects.\r\nIf a short circuit is present, wiring testing can detect the error.\r\nAn even higher quality test is to perform Dielectric withstand testing.\r\nGenerally, when 3000 Volts is applied, a discharge of 1 mm occurs.\r\nIn the Dielectric withstand testing, a high voltage is applied to the test target. It determines that there is no discharge phenomenon to other conductors.\r\n\r\nElectrical faults can be detected when wires are close to other conductors inside the connector.\r\nThere are no eyes on the harness tester, so it cannot detect the presence or absence of wire coming out.\r\nThus, it determines an electrical error.\r\n\r\nIn some cases, a momentary short circuit can be detected as an error.\r\nVibration or shock is applied to determine if a short circuit occurs.\r\nIf the wire contacts different conductors, an error is determined.\r\n\r\n\r\nDielectric Withstand testing can be performed with NMG+, NMK, and NMX, harness multi-testers.\r\nMomentary contact detection can be conducted with NMC Plus series.\r\nHigh-quality harness testing can be provided by the NACMAN series. Please feel free to contact us.<\/p>\r\n\r\n\r\n","protected":false},"author":19,"featured_media":3572,"menu_order":6,"template":"","meta":[],"electrical-knowledge-cat":[127,155],"electrical-knowledge-tag":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge\/3571"}],"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\/3571\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/media\/3572"}],"wp:attachment":[{"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/media?parent=3571"}],"wp:term":[{"taxonomy":"electrical-knowledge-cat","embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge-cat?post=3571"},{"taxonomy":"electrical-knowledge-tag","embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge-tag?post=3571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}