{"id":7181,"date":"2025-10-30T03:02:14","date_gmt":"2025-10-30T03:02:14","guid":{"rendered":"https:\/\/tokeep.net\/?p=7181"},"modified":"2026-01-06T00:07:55","modified_gmt":"2026-01-06T05:07:55","slug":"vai-tro-cua-bo-bao-ve-qua-ap-va-duoi-ap-tu-dong-reset-la-gi","status":"publish","type":"post","link":"https:\/\/tokeep.net\/vi\/vai-tro-cua-bo-bao-ve-qua-ap-va-duoi-ap-tu-dong-reset-la-gi\/","title":{"rendered":"Vai tr\u00f2 c\u1ee7a b\u1ed9 b\u1ea3o v\u1ec7 qu\u00e1 \u00e1p v\u00e0 d\u01b0\u1edbi \u00e1p t\u1ef1 \u0111\u1ed9ng reset l\u00e0 g\u00ec?"},"content":{"rendered":"<p class=\"marklang-paragraph\"><a href=\"https:\/\/elejg.com\/?voltage-protector\/\">B\u1ed9 b\u1ea3o v\u1ec7 qu\u00e1 \u00e1p v\u00e0 d\u01b0\u1edbi \u00e1p t\u1ef1 \u0111\u1ed9ng reset<\/a>(OUPA) l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb th\u00f4ng minh d\u00f9ng \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u1ea1ch \u0111i\u1ec7n, vai tr\u00f2 ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 gi\u00e1m s\u00e1t v\u00e0 can thi\u1ec7p v\u00e0o c\u00e1c \u0111i\u1ec7n \u00e1p b\u1ea5t th\u01b0\u1eddng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho thi\u1ebft b\u1ecb \u0111i\u1ec7n. C\u00e1c ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n<h3>1. Ch\u1ee9c n\u0103ng ch\u00ednh<\/h3>\n<ol class=\"list-paddingleft-2\">\n<li>\n<p class=\"marklang-paragraph\">B\u1ea3o v\u1ec7 ch\u1ed1ng s\u1ef1 c\u1ed1 \u0111i\u1ec7n \u00e1p b\u1ea5t th\u01b0\u1eddng<br \/>\nKhi \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1eddng d\u00e2y v\u01b0\u1ee3t qu\u00e1 (qu\u00e1 \u00e1p) ho\u1eb7c gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi (thi\u1ebfu \u00e1p) ph\u1ea1m vi an to\u00e0n, thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 nhanh ch\u00f3ng ng\u1eaft m\u1ea1ch \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng do \u0111i\u1ec7n \u00e1p b\u1ea5t th\u01b0\u1eddng \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n cu\u1ed1i (nh\u01b0 \u0111\u1ed9ng c\u01a1, bi\u1ebfn \u00e1p, \u0111\u1ed3ng h\u1ed3 \u0111o, v.v.). V\u00ed d\u1ee5, thi\u1ebfu \u00e1p c\u00f3 th\u1ec3 khi\u1ebfn thi\u1ebft b\u1ecb kh\u00f4ng kh\u1edfi \u0111\u1ed9ng \u0111\u01b0\u1ee3c ho\u1eb7c b\u1ecb ch\u00e1y, trong khi qu\u00e1 \u00e1p c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng g\u00e2y ra c\u00e1c nguy hi\u1ec3m nh\u01b0 kh\u00f3i v\u00e0 l\u1eeda.<\/p>\n<\/li>\n<li>\n<p class=\"marklang-paragraph\">T\u1ef1 \u0111\u1ed9ng kh\u00f4i ph\u1ee5c ngu\u1ed3n \u0111i\u1ec7n<br \/>\nKhi \u0111i\u1ec7n \u00e1p tr\u1edf l\u1ea1i b\u00ecnh th\u01b0\u1eddng, thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 s\u1ebd t\u1ef1 \u0111\u1ed9ng t\u00e1i k\u1ebft n\u1ed1i m\u1ea1ch trong kho\u1ea3ng th\u1eddi gian \u0111\u00e3 c\u00e0i \u0111\u1eb7t s\u1eb5n, lo\u1ea1i b\u1ecf nhu c\u1ea7u can thi\u1ec7p th\u1ee7 c\u00f4ng v\u00e0 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c khi thi\u1ebft b\u1ecb kh\u00f4ng c\u00f3 ng\u01b0\u1eddi gi\u00e1m s\u00e1t.<span class=\"cos-tooltip cosd-citation\"><span class=\"cosd-citation-citationId\"><br \/>\n<\/span><\/span><\/p>\n<\/li>\n<\/ol>\n<hr \/>\n<h3>2. C\u00e1c tr\u01b0\u1eddng h\u1ee3p \u1ee9ng d\u1ee5ng<\/h3>\n<ul class=\"list-paddingleft-2\">\n<li>Ph\u00e2n ph\u1ed1i \u0111i\u1ec7n gia \u0111\u00ecnh v\u00e0 th\u01b0\u01a1ng m\u1ea1i<br \/>\nN\u00f3 ph\u00f9 h\u1ee3p cho c\u00e1c \u0111\u01b0\u1eddng d\u00e2y ph\u00e2n ph\u1ed1i m\u1ed9t pha 220V\/50Hz ho\u1eb7c ba pha 415V, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u1ea5p \u0111i\u1ec7n cho h\u1ed9p ph\u00e2n ph\u1ed1i \u0111i\u1ec7n trong h\u1ed9 gia \u0111\u00ecnh, b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb m\u1ed9t pha trong trung t\u00e2m th\u01b0\u01a1ng m\u1ea1i, v.v., \u0111\u1eb7c bi\u1ec7t l\u00e0 trong tr\u01b0\u1eddng h\u1ee3p bi\u1ebfn \u0111\u1ed9ng \u0111i\u1ec7n \u00e1p do s\u1ef1 c\u1ed1 trung t\u00ednh g\u00e2y ra.<\/li>\n<li>B\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p<br \/>\nM\u00f4-t\u01a1 b\u1ea3o v\u1ec7, c\u1ea7u dao ch\u00e2n kh\u00f4ng, \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n \u00e1p,<a href=\"https:\/\/elejg.com\/?Current-limiting-protector\/\">nhi\u1ec7t \u0111\u1ed9<\/a>C\u00e1c b\u1ed9 ph\u00e1t v\u00e0 thi\u1ebft b\u1ecb kh\u00e1c \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng ho\u1eb7c m\u1ea5t m\u00e1t trong qu\u00e1 tr\u00ecnh do bi\u1ebfn \u0111\u1ed9ng \u0111i\u1ec7n \u00e1p.<\/li>\n<\/ul>\n<h3><strong>3. Nguy\u00ean t\u1eafc k\u1ef9 thu\u1eadt<\/strong><\/h3>\n<p>\u200c Gi\u00e1m s\u00e1t v\u00e0 \u0111i\u1ec1u khi\u1ec3n th\u00f4ng minh\u200c<br \/>\nN\u00f3 s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 vi x\u1eed l\u00fd t\u1ed1c \u0111\u1ed9 cao \u0111\u1ec3 ph\u00e1t hi\u1ec7n \u0111i\u1ec7n \u00e1p theo th\u1eddi gian th\u1ef1c, k\u1ebft h\u1ee3p v\u1edbi r\u01a1le gi\u1eef t\u1eeb t\u00ednh \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 \u0111\u00f3ng\/m\u1edf nhanh, v\u00e0 thi\u1ebft k\u1ebf analog-digital \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c v\u00e0 ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng th\u1ea5p.<span class=\"cos-tooltip cosd-citation\"><span class=\"cosd-citation-citationId\"><br \/>\n<\/span><\/span><\/p>\n<p>Kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u<br \/>\nN\u00f3 c\u00f3 th\u1ec3 ph\u00e2n bi\u1ec7t gi\u1eefa qu\u00e1 \u00e1p t\u1ea1m th\u1eddi v\u00e0 qu\u00e1 \u00e1p li\u00ean t\u1ee5c \u0111\u1ec3 tr\u00e1nh s\u1ef1 c\u1ed1; \u0110\u1ed3ng th\u1eddi, n\u00f3 c\u00f3 th\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh trong tr\u01b0\u1eddng h\u1ee3p \u0111i\u1ec7n \u00e1p kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c m\u1ea5t \u0111i\u1ec7n \u0111\u1ed9t ng\u1ed9t \u0111\u1ec3 ng\u0103n ch\u1eb7n k\u1ebft n\u1ed1i ng\u1eabu nhi\u00ean.<\/p>\n<h3>4. C\u00e1c ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 b\u1ed5 sung<\/h3>\n<p>B\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ed7i v\u00e0 \u0111\u01b0\u1eddng \u0111\u1ee9t g\u00e3y<br \/>\nCung c\u1ea5p b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i s\u1ef1 c\u1ed1 m\u1ea5t pha trong m\u1ea1ch ba pha ho\u1eb7c s\u1ef1 c\u1ed1 m\u1ea5t d\u00e2y trung t\u00ednh trong m\u1ea1ch m\u1ed9t pha \u0111\u1ec3 ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb do ho\u1ea1t \u0111\u1ed9ng thi\u1ebfu pha.<span class=\"cos-tooltip cosd-citation\"><span class=\"cosd-citation-citationId\"><br \/>\n<\/span><\/span><\/p>\n<p>Ch\u1ecbu \u0111\u01b0\u1ee3c t\u00e1c \u0111\u1ed9ng c\u1ee7a \u00e1p su\u1ea5t cao<br \/>\nN\u00f3 v\u1eabn c\u00f3 th\u1ec3 b\u1ecb v\u1ee1 an to\u00e0n d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng li\u00ean t\u1ee5c c\u1ee7a \u00e1p l\u1ef1c cao v\u00e0 kh\u00f4ng b\u1ecb h\u01b0 h\u1ecfng.<span class=\"cos-tooltip cosd-citation\"><span class=\"cosd-citation-citationId\"><br \/>\n<\/span><\/span><\/p>\n<h3>5. S\u1ef1 kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c c\u1ea7u dao th\u00f4ng th\u01b0\u1eddng<\/h3>\n<ul class=\"list-paddingleft-2\">\n<li>\n<p class=\"marklang-paragraph\">C\u00e1c c\u1ea7u dao th\u00f4ng th\u01b0\u1eddng ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho <a href=\"https:\/\/elejg.com\/?Current-limiting-protector\/\">Qu\u00e1 d\u00f2ng <\/a>B\u1ea3o v\u1ec7, trong khi OUPA chuy\u00ean v\u1ec1 b\u1ea3o v\u1ec7 ch\u1ed1ng s\u1ef1 c\u1ed1 \u0111i\u1ec7n \u00e1p b\u1ea5t th\u01b0\u1eddng v\u00e0 c\u00f3 ch\u1ee9c n\u0103ng ph\u1ee5c h\u1ed3i t\u1ef1 \u0111\u1ed9ng, v\u00e0 hai h\u1ec7 th\u1ed1ng n\u00e0y kh\u00f4ng th\u1ec3 thay th\u1ebf cho nhau.<\/p>\n<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>B\u1ed9 b\u1ea3o v\u1ec7 qu\u00e1 \u00e1p\/thi\u1ebfu \u00e1p t\u1ef1 \u0111\u1ed9ng reset (OUPA) l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb th\u00f4ng minh d\u00f9ng \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u1ea1ch \u0111i\u1ec7n, vai tr\u00f2 ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 gi\u00e1m s\u00e1t v\u00e0 can thi\u1ec7p v\u00e0o c\u00e1c t\u00ecnh tr\u1ea1ng \u0111i\u1ec7n \u00e1p b\u1ea5t th\u01b0\u1eddng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho thi\u1ebft b\u1ecb \u0111i\u1ec7n. C\u00e1c ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>","protected":false},"author":1,"featured_media":7182,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_seo_title":"","_seo_keywords":"over-and under voltage protector, self-resetting over-and under voltage protector","_seo_description":"Self-resettable over and under voltage protector(OUPA) is an intelligent device for circuit protection, the core role of which is to monitorabnormal"},"categories":[17],"tags":[],"class_list":["post-7181","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"seo_title":"","seo_keywords":"over-and under voltage protector, self-resetting over-and under voltage protector","seo_description":"Self-resettable over and under voltage protector(OUPA) is an intelligent device for circuit protection, the core role of which is to monitorabnormal","seo_score":"70","_links":{"self":[{"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/posts\/7181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/comments?post=7181"}],"version-history":[{"count":0,"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/posts\/7181\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/media\/7182"}],"wp:attachment":[{"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/media?parent=7181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/categories?post=7181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tokeep.net\/vi\/wp-json\/wp\/v2\/tags?post=7181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}