{"id":239,"date":"2022-02-24T03:56:00","date_gmt":"2022-02-24T03:56:00","guid":{"rendered":"https:\/\/www.voltage-tester.com\/?p=239"},"modified":"2025-04-24T02:16:23","modified_gmt":"2025-04-24T02:16:23","slug":"know-more-about-contact-resistance-tester","status":"publish","type":"post","link":"https:\/\/www.voltage-tester.com\/ms\/know-more-about-contact-resistance-tester-article\/","title":{"rendered":"Ketahui lebih lanjut tentang penguji rintangan sentuhan"},"content":{"rendered":"

Mengapa Anda Perlu Ujian Rintangan Sentuhan?<\/strong><\/p>\n\n\n\n

Kontak dalam pemutus litar<\/strong> Perlu diperiksa secara berkala untuk memastikan pemutus litar berada dalam keadaan baik dan berfungsi. Kenalan yang diselenggara dengan buruk atau rosak boleh menyebabkan percikan api, kehilangan fasa, dan bahkan kebakaran. <\/p>\n\n\n\n

Ujian ini amat penting bagi sentuhan yang membawa arus dalam jumlah besar (contohnya bar bus pada peralatan pemutus litar) kerana rintangan sentuhan yang lebih tinggi boleh menyebabkan kapasiti pengaliran arus yang lebih rendah dan kerugian yang lebih tinggi. Ujian ductor biasanya dijalankan menggunakan mikro\/mili-ohmmetre atau ohmmetre rendah. <\/p>\n\n\n\n

Pengukuran rintangan sentuhan<\/strong> Membantu mengenal pasti kakisan fretting pada kenalan, dan membolehkan kakisan kenalan didiagnosis serta dicegah. Peningkatan rintangan kenalan boleh menyebabkan kejatuhan voltan yang tinggi dalam sistem, dan ia perlu dikawal. <\/p>\n\n\n\n

Prinsip operasi penguji rintangan sentuhan<\/strong><\/p>\n\n\n\n

 Adalah sangat penting dalam ujian rintangan sentuhan untuk mengekalkan keadaan pengukuran yang konsisten, supaya dapat dibandingkan dengan keputusan sebelum dan akan datang bagi analisis tren. Oleh itu, apabila mengambil ukuran berkala, ujian rintangan sentuhan mesti dijalankan pada kedudukan yang sama, dengan elektrod ujian yang sama (sentiasa menggunakan kabel yang telah dikalibrasi dan dibekalkan oleh pengeluar), dan dalam keadaan yang sama, supaya dapat mengetahui bila sesebuah sambungan, penyambung, kimpalan atau peranti akan menjadi tidak selamat. <\/p>\n\n\n\n

 Penguji rintangan gelung<\/strong> menggunakan bekalan kuasa suis frekuensi tinggi yang dimodulasi lebar denyut untuk menyediakan arus ujian melebihi 100A, tekan butang pengukuran, keluaran bekalan kuasa suis frekuensi tinggi itu adalah arus ujian melebihi 100A, pada masa yang sama litar pensampelan memulakan pensampelan, isyarat yang diperoleh diperkuatkan oleh penguat, penukar A\/D menukar isyarat analog kepada isyarat digital, dan kemudian melalui penapisan data oleh mikropemproses,\u00a0 mengira, memproses, dan akhirnya menghantar ke paparan untuk menunjukkan arus dan rintangan yang diukur. Selepas 10 saat, sistem akan menetapkan semula secara automatik. Apabila rintangan gelung yang diukur kurang daripada 400\u03bc\u03a9, ketepatan minimum pengukuran ialah 0.1\u03bc\u03a9. Apabila rintangan gelung yang diukur melebihi 400\u03bc\u03a9, ketepatan minimum pengukuran ialah 1\u03bc\u03a9.<\/p>\n\n\n\n

\"Mengapa<\/figure>\n\n\n\n
\"Mengapa<\/figure>","protected":false},"excerpt":{"rendered":"

Why You Need Contact Resistance Test? The contacts in the circuit breaker needs to checked periodically to ensure that the breaker is healthy and functional. Poorly maintained or damaged contacts can cause arcing, loosing phase, and even fire.  This test is especially important for contacts that carry large amounts of current (e.g. switchgear busbars) because higher contact resistance can lead to […]<\/p>","protected":false},"author":1,"featured_media":241,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[772],"tags":[],"class_list":["post-239","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news"],"yoast_head":"\nKnow more about contact resistance tester - Run Test<\/title>\n<meta name=\"description\" content=\"China transformer test supplier, we provide Relay Protection Test, Resistance test, Circuit Breaker Test, and Partial Discharge Test for you with good price.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.voltage-tester.com\/ms\/know-more-about-contact-resistance-tester-article\/\" \/>\n<meta property=\"og:locale\" content=\"ms_MY\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Know more about contact resistance tester - 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