{"id":3127,"date":"2022-03-23T02:39:52","date_gmt":"2022-03-22T17:39:52","guid":{"rendered":""},"modified":"2022-09-26T17:43:31","modified_gmt":"2022-09-26T08:43:31","slug":"%e3%80%90%e6%a5%ad%e7%a8%ae%e5%88%a52%e3%80%91%e5%ae%87%e5%ae%99%e8%88%aa%e7%a9%ba%e6%a5%ad%e7%95%8c%e3%81%ae%e3%82%b1%e3%83%bc%e3%83%96%e3%83%ab%e3%83%bb%e3%83%af%e3%82%a4%e3%83%a4%e3%83%bc%e3%83%8f","status":"publish","type":"electrical-knowledge","link":"https:\/\/www.naccorporation.com\/en\/learning-center\/electrical-knowledge\/3127","title":{"rendered":"[Industry 2] Testing of cables and wire harnesses in the aerospace industry"},"content":{"rendered":"\r\n\r\n<div class=\"c-movie\">\r\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/qY_hIUwIHnc\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div>\r\n<div class=\"c-spacer--s\">\r\n\r\n\r\n<h3>Requirements and features of harness testing in the aerospace industry<\/h3>\r\n<div class=\"c-spacer--s\"><\/div>\r\n<h4>1. Overview<\/h4>\r\n<p>\r\nHigh-quality testing is essential for harnesses and cables used in aircraft, rockets, satellites, and space probes.\r\nSpace development by private companies and venture companies, known as \"new space\" companies, is also becoming more and more active.\r\nAs a specialized manufacturer of harness testers, NAC CORPORATION has achievements in harness testing for the aerospace industry.<\/p>\r\n<\/br>\r\n<ul>\r\n<li>\u30fbLightweight components<\/li>\r\n<li>\u30fbNarrow pitch connectors are selected to save space.<\/li>\r\n<li>\u30fbDesigns that can withstand extreme environments<\/li>\r\n<li>\u30fbReliability is achieved in compliance with various standards and with advanced requirements such as JAXA certification.<\/li>\r\n\r\n<li>\u30fbAll information that can be measured is recorded and stored for a long period of time.<\/li>\r\n<li>\u30fbMultiple processes with intermediate and final testing due to the huge size of the harnesses.<\/li>\r\n\r\n<\/ul>\r\n<\/div>\r\n<div class=\"c-spacer--s\">\r\n<h4>2. Testing of cables and wire harnesses in the aerospace industry<\/h4>\r\n<ul>\r\n<li>\u30fbWiring, resistance, dielectric withstand voltage, and insulation testing are conducted.<\/li>\r\n<li>\u30fbThe threshold resistance value for the wiring testing is clearly determined. For example : 1\u03a9 or lower for continuity, 10M\u03a9 or higher for open.<\/li>\r\n\r\n<li>\u30fbResistance testing requires measurement at the m\u03a9 level. Therefore, Kelvin connection (4-wire low-resistance testing) is required to measure and determine the pure conductor resistance of the tested target.<\/li>\r\n<li>\u30fbDielectric withstand voltage testing is conducted for 60 seconds per application.<\/li>\r\n\r\n<li>\u30fbThe application method can be either one-to-all or one-to-one scanning.<\/li>\r\n<li>\u30fbBoth AC and DC withstand voltage tests are performed, but DC tests are required for long cables because of the influence of capacitive reactance.<\/li>\r\n<li>\u30fbInsulation resistance testing is conducted using the scan method or connector-by-connector as required specifications.\r\n\r\nHigh-quality testing is conducted by specifying the high and low sides of the application, setting different voltages and insulation resistance values for each circuit.<\/li>\r\n<li>Demand for momentary disconnection testing to check continuity under shock and vibration is also increasing.<\/li>\r\n<\/ul>\r\n<\/div>\r\n\r\n<div class=\"c-spacer--s\">\r\n<h4>3. Operation<\/h4>\r\n<ul>\r\n<li>\u30fbA variety of information is involved in the test results. The inspection sheet contains the actual measured values and judgment results of each test for each wire.<\/li>\r\n<li>\u30fbThe test target is huge, so a wheeled wagon-type tester is installed for the operation.<\/li>\r\n<li>\u30fbNAC Corporation's harness testers adopt special semiconductor relays that have no contact life and are very popular in the aerospace industry.<\/li>\r\n<li>\u30fbNAC CORPORATION's testers are maintenance-free and have a low tendency to fail.<\/li>\r\n<li>\u30fbNAC CORPORATION also provides quick calibration services to prove traceability.<\/li>\r\n<\/ul>\r\n<\/div>\r\n\r\n\r\n<p>We have experience in harness testing in the aerospace industry worldwide. \r\nFor quality and efficient testing, please contact NAC Corporation.<\/p>\r\n\r\n\r\n\r\n","protected":false},"author":1,"featured_media":3128,"menu_order":23,"template":"","meta":[],"electrical-knowledge-cat":[127],"electrical-knowledge-tag":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge\/3127"}],"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\/1"}],"version-history":[{"count":0,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge\/3127\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/media\/3128"}],"wp:attachment":[{"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/media?parent=3127"}],"wp:term":[{"taxonomy":"electrical-knowledge-cat","embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge-cat?post=3127"},{"taxonomy":"electrical-knowledge-tag","embeddable":true,"href":"https:\/\/www.naccorporation.com\/en\/wp-json\/wp\/v2\/electrical-knowledge-tag?post=3127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}