{"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\/vi\/know-more-about-contact-resistance-tester-article\/","title":{"rendered":"T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 m\u00e1y \u0111o \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac"},"content":{"rendered":"<p><strong>T\u1ea1i sao b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac?<\/strong><\/p>\n\n\n\n<p>C\u00e1c li\u00ean h\u1ec7 trong&nbsp;<strong>c\u1ea7u dao<\/strong>&nbsp;c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea7u dao v\u1eabn ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u00e0 \u1ed5n \u0111\u1ecbnh. C\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o d\u01b0\u1ee1ng \u0111\u00fang c\u00e1ch ho\u1eb7c b\u1ecb h\u01b0 h\u1ecfng c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ph\u00f3ng \u0111i\u1ec7n, m\u1ea5t pha v\u00e0 th\u1eadm ch\u00ed l\u00e0 h\u1ecfa ho\u1ea1n.&nbsp;<\/p>\n\n\n\n<p>Th\u1eed nghi\u1ec7m n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac ph\u1ea3i ch\u1ecbu d\u00f2ng \u0111i\u1ec7n l\u1edbn (v\u00ed d\u1ee5: thanh c\u00e1i c\u1ee7a t\u1ee7 \u0111i\u1ec7n) v\u00ec \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac cao c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ecbu d\u00f2ng \u0111i\u1ec7n gi\u1ea3m v\u00e0 t\u1ed5n th\u1ea5t t\u0103ng. Th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n tr\u1edf vi\/mili-ohm ho\u1eb7c \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n tr\u1edf th\u1ea5p.&nbsp;<\/p>\n\n\n\n<p>\u0110o l\u01b0\u1eddng&nbsp;<strong>\u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac<\/strong>&nbsp;gi\u00fap ph\u00e1t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng \u0103n m\u00f2n do ma s\u00e1t \u1edf c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p ch\u1ea9n \u0111o\u00e1n v\u00e0 ng\u0103n ng\u1eeba t\u00ecnh tr\u1ea1ng \u0103n m\u00f2n n\u00e0y. S\u1ef1 gia t\u0103ng \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac c\u00f3 th\u1ec3 g\u00e2y ra s\u1ee5t \u00e1p cao trong h\u1ec7 th\u1ed1ng, v\u00e0 \u0111i\u1ec1u n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.&nbsp;<\/p>\n\n\n\n<p><strong>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y \u0111o \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac<\/strong><\/p>\n\n\n\n<p>&nbsp;Trong th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac, vi\u1ec7c duy tr\u00ec c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111o l\u01b0\u1eddng nh\u1ea5t qu\u00e1n l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng, nh\u1eb1m \u0111\u1ea3m b\u1ea3o c\u00f3 th\u1ec3 so s\u00e1nh v\u1edbi c\u00e1c k\u1ebft qu\u1ea3 tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 sau n\u00e0y \u0111\u1ec3 ph\u00e2n t\u00edch xu h\u01b0\u1edbng. Do \u0111\u00f3, khi th\u1ef1c hi\u1ec7n c\u00e1c l\u1ea7n \u0111o \u0111\u1ecbnh k\u1ef3, th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh t\u1ea1i c\u00f9ng m\u1ed9t v\u1ecb tr\u00ed, s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t b\u1ed9 d\u00e2y \u0111o (lu\u00f4n l\u00e0 c\u00e1c d\u00e2y c\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n do nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p) v\u00e0 trong c\u00f9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n, \u0111\u1ec3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c th\u1eddi \u0111i\u1ec3m m\u1ed9t m\u1ed1i n\u1ed1i, \u0111i\u1ec3m k\u1ebft n\u1ed1i, m\u1ed1i h\u00e0n ho\u1eb7c thi\u1ebft b\u1ecb tr\u1edf n\u00ean kh\u00f4ng an to\u00e0n.&nbsp;<\/p>\n\n\n\n<p>&nbsp;<strong>M\u00e1y \u0111o \u0111i\u1ec7n tr\u1edf v\u00f2ng l\u1eb7p<\/strong>&nbsp;S\u1eed d\u1ee5ng ngu\u1ed3n \u0111i\u1ec7n chuy\u1ec3n m\u1ea1ch t\u1ea7n s\u1ed1 cao \u0111i\u1ec1u ch\u1ebf \u0111\u1ed9 r\u1ed9ng xung \u0111\u1ec3 cung c\u1ea5p d\u00f2ng \u0111i\u1ec7n th\u1eed nghi\u1ec7m tr\u00ean 100A; nh\u1ea5n n\u00fat \u0111o, ngu\u1ed3n \u0111i\u1ec7n chuy\u1ec3n m\u1ea1ch t\u1ea7n s\u1ed1 cao s\u1ebd ph\u00e1t ra d\u00f2ng \u0111i\u1ec7n th\u1eed nghi\u1ec7m tr\u00ean 100A; \u0111\u1ed3ng th\u1eddi m\u1ea1ch l\u1ea5y m\u1eabu b\u1eaft \u0111\u1ea7u ho\u1ea1t \u0111\u1ed9ng, t\u00edn hi\u1ec7u thu \u0111\u01b0\u1ee3c \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i b\u1edfi b\u1ed9 khu\u1ebfch \u0111\u1ea1i, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i A\/D chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 th\u00e0nh t\u00edn hi\u1ec7u s\u1ed1, sau \u0111\u00f3 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c b\u1ed9 vi x\u1eed l\u00fd l\u1ecdc,  t\u00ednh to\u00e1n, x\u1eed l\u00fd v\u00e0 cu\u1ed1i c\u00f9ng g\u1eedi \u0111\u1ebfn m\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n tr\u1edf \u0111o \u0111\u01b0\u1ee3c. Sau 10 gi\u00e2y, h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng thi\u1ebft l\u1eadp l\u1ea1i. Khi \u0111i\u1ec7n tr\u1edf v\u00f2ng \u0111o \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n 400\u03bc\u03a9, \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u1ed1i thi\u1ec3u c\u1ee7a ph\u00e9p \u0111o l\u00e0 0,1\u03bc\u03a9. Khi \u0111i\u1ec7n tr\u1edf v\u00f2ng \u0111o \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n 400\u03bc\u03a9, \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u1ed1i thi\u1ec3u c\u1ee7a ph\u00e9p \u0111o l\u00e0 1\u03bc\u03a9.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test1.webp\" alt=\"T\u1ea1i sao b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac1\" class=\"wp-image-242\" srcset=\"https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test1.webp 1024w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test1-300x169.webp 300w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test1-768x432.webp 768w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test1-18x10.webp 18w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test.webp\" alt=\"T\u1ea1i sao b\u1ea1n c\u1ea7n th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac1\" class=\"wp-image-241\" srcset=\"https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test.webp 1024w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test-300x169.webp 300w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test-768x432.webp 768w, https:\/\/www.voltage-tester.com\/wp-content\/uploads\/2025\/02\/Why-You-Need-Contact-Resistance-Test-18x10.webp 18w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>Why You Need&nbsp;Contact Resistance Test? The contacts in the&nbsp;circuit breaker&nbsp;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.&nbsp; This test is especially important for contacts that&nbsp;carry large amounts of current&nbsp;(e.g. switchgear busbars)&nbsp;because higher contact resistance can lead to [&hellip;]<\/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":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Know 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\/vi\/know-more-about-contact-resistance-tester-article\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Know more about contact resistance tester - 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