{"id":19943,"date":"2025-11-17T05:07:00","date_gmt":"2025-11-16T21:07:00","guid":{"rendered":"https:\/\/viox.com\/?p=19943"},"modified":"2025-11-14T11:07:50","modified_gmt":"2025-11-14T03:07:50","slug":"icu-wall-mccb-vs-acb-interrupting-capacity","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/icu-wall-mccb-vs-acb-interrupting-capacity\/","title":{"rendered":"B\u1ee9c t\u01b0\u1eddng Icu: T\u1ea1i sao MCCB c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 ph\u00e1t n\u1ed5 trong khi ACB v\u1eabn an to\u00e0n"},"content":{"rendered":"<div class=\"product-intro\">\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-19945\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Icu-Wall.webp\" alt=\"The Icu Wall\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Icu-Wall.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Icu-Wall-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Icu-Wall-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Icu-Wall-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Icu-Wall-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Icu-Wall-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Icu-Wall-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>B\u1ea1n \u0111ang xem x\u00e9t ng\u00e2n s\u00e1ch thi\u1ebft k\u1ebf t\u1ee7 \u0111i\u1ec7n. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt y\u00eau c\u1ea7u m\u1ed9t aptomat t\u1ed5ng \u0111\u1ea7u v\u00e0o 2500A. B\u1ea1n t\u00ecm th\u1ea5y hai l\u1ef1a ch\u1ecdn:<\/p>\n<ul>\n<li><strong>L\u1ef1a ch\u1ecdn A (<a href=\"https:\/\/test.viox.com\/vi\/mccb\/\">MCCB<\/a>):<\/strong> R\u1ebb, nh\u1ecf g\u1ecdn v\u00e0 \u0111\u1ecbnh m\u1ee9c 2500A.<\/li>\n<li><strong>L\u1ef1a ch\u1ecdn B (<a href=\"https:\/\/test.viox.com\/vi\/complete-guide-to-air-circuit-breakers-acb\/\">Ng\u00e2n h\u00e0ng<\/a>):<\/strong> To l\u1edbn, c\u1ed3ng k\u1ec1nh v\u00e0 \u0111\u1eaft g\u1ea5p n\u0103m l\u1ea7n.<\/li>\n<\/ul>\n<p>C\u00e2u h\u1ecfi ch\u1eafc ch\u1eafn \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u00ean b\u00e0n c\u1ee7a k\u1ef9 s\u01b0 \u0111i\u1ec7n: <em>\u201cT\u1ea1i sao ch\u00fang ta ph\u1ea3i tr\u1ea3 nhi\u1ec1u ti\u1ec1n cho c\u00e1i c\u1ed3ng k\u1ec1nh khi c\u00e1i r\u1ebb h\u01a1n c\u00f3 c\u00f9ng \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c?\u201d<\/em><\/p>\n<p>C\u00e2u tr\u1ea3 l\u1eddi r\u1ea5t \u0111\u01a1n gi\u1ea3n, nh\u01b0ng l\u1ea1i v\u00f4 h\u00ecnh tr\u00ean nh\u00e3n: **Kh\u1ea3 n\u0103ng c\u1eaft d\u00f2ng ng\u1eafn m\u1ea1ch (Icu).**<\/p>\n<p>B\u1ea1n kh\u00f4ng so s\u00e1nh kh\u1ea3 n\u0103ng mang d\u00f2ng \u0111i\u1ec7n (d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c); b\u1ea1n \u0111ang so s\u00e1nh kh\u1ea3 n\u0103ng s\u1ed1ng s\u00f3t sau m\u1ed9t v\u1ee5 n\u1ed5. ACB \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o \u0111\u1ec3 x\u1eed l\u00fd s\u1ef1 c\u1ed1 m\u00e0 MCCB s\u1ebd b\u1ecb h\u1ecfng ho\u00e0n to\u00e0n.<\/p>\n<h2>1. Con s\u1ed1 \u1ea9n: \u0110\u1ecbnh ngh\u0129a gi\u1edbi h\u1ea1n Icu<\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-19946\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Hidden-Number-Defining-the-Icu-Wall.webp\" alt=\"The Hidden Number: Defining the Icu Wall\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Hidden-Number-Defining-the-Icu-Wall.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Hidden-Number-Defining-the-Icu-Wall-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Hidden-Number-Defining-the-Icu-Wall-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Hidden-Number-Defining-the-Icu-Wall-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Hidden-Number-Defining-the-Icu-Wall-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Hidden-Number-Defining-the-Icu-Wall-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Hidden-Number-Defining-the-Icu-Wall-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Con s\u1ed1 quan tr\u1ecdng nh\u1ea5t, nh\u01b0ng l\u1ea1i b\u1ecb hi\u1ec3u l\u1ea7m nhi\u1ec1u nh\u1ea5t, trong ph\u00e2n ph\u1ed1i \u0111i\u1ec7n quy m\u00f4 l\u1edbn l\u00e0 **Icu (Kh\u1ea3 n\u0103ng c\u1eaft ng\u1eafn m\u1ea1ch t\u1edbi h\u1ea1n \u0111\u1ecbnh m\u1ee9c)**.<\/p>\n<p>Icu cho b\u1ea1n bi\u1ebft d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch t\u1ed1i \u0111a m\u00e0 aptomat c\u00f3 th\u1ec3 c\u1eaft m\u1ed9t c\u00e1ch an to\u00e0n *m\u00e0 kh\u00f4ng b\u1ecb ph\u00e1 h\u1ee7y*. N\u1ebfu d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 th\u1ef1c t\u1ebf v\u01b0\u1ee3t qu\u00e1 \u0111\u1ecbnh m\u1ee9c Icu c\u1ee7a aptomat, aptomat c\u00f3 th\u1ec3 kh\u00f4ng c\u1eaft \u0111\u01b0\u1ee3c s\u1ef1 c\u1ed1, d\u1eabn \u0111\u1ebfn m\u1ed9t v\u1ee5 n\u1ed5 l\u1edbn, kh\u00f4ng ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 h\u1ed3 quang \u0111i\u1ec7n.<\/p>\n<h3>Gi\u1edbi h\u1ea1n v\u1eadt l\u00fd c\u1ee7a MCCB<\/h3>\n<p>Do v\u1ecf nh\u1ef1a k\u00edn, Aptomat v\u1ecf \u0111\u00fac (MCCB) \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n an to\u00e0n:<\/p>\n<ul>\n<li><strong>Gi\u1edbi h\u1ea1n MCCB \u0111i\u1ec3n h\u00ecnh:<\/strong> Icu th\u01b0\u1eddng \u0111\u1ea1t t\u1ed1i \u0111a t\u1eeb 65kA \u0111\u1ebfn 85kA.<\/li>\n<li><strong>C\u00e1i b\u1eaby:<\/strong> Gi\u1edbi h\u1ea1n n\u00e0y \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh b\u1edfi \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1ecf nh\u1ef1a.<\/li>\n<\/ul>\n<p>Trong c\u00e1c h\u1ec7 th\u1ed1ng c\u00f4ng su\u1ea5t l\u1edbn\u2014\u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n b\u1edfi nhi\u1ec1u m\u00e1y bi\u1ebfn \u00e1p l\u1edbn ho\u1eb7c \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i ch\u1eb7t ch\u1ebd\u2014d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 c\u00f3 s\u1eb5n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng v\u01b0\u1ee3t qu\u00e1 **100kA**. \u0110\u00e2y l\u00e0 gi\u1edbi h\u1ea1n Icu.<\/p>\n<h2>2. \u0110i\u1ec3m ph\u00e1 v\u1ee1: D\u1eadp h\u1ed3 quang b\u1eb1ng nh\u1ef1a so v\u1edbi kh\u00f4ng kh\u00ed<\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-19947\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Breaking-Point-Plastic-vs.-Open-Air-Quenching.webp\" alt=\"The Breaking Point: Plastic vs. Open Air Quenching\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Breaking-Point-Plastic-vs.-Open-Air-Quenching.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Breaking-Point-Plastic-vs.-Open-Air-Quenching-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Breaking-Point-Plastic-vs.-Open-Air-Quenching-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Breaking-Point-Plastic-vs.-Open-Air-Quenching-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Breaking-Point-Plastic-vs.-Open-Air-Quenching-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Breaking-Point-Plastic-vs.-Open-Air-Quenching-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Breaking-Point-Plastic-vs.-Open-Air-Quenching-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai c\u00f4ng ngh\u1ec7 n\u1eb1m \u1edf c\u00e1ch ch\u00fang x\u1eed l\u00fd n\u0103ng l\u01b0\u1ee3ng l\u1edbn, d\u1eef d\u1ed9i c\u1ee7a h\u1ed3 quang ng\u1eafn m\u1ea1ch l\u1edbn.<\/p>\n<h3>Ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c c\u1ee7a MCCB (Nguy c\u01a1 n\u1ed5)<\/h3>\n<p>MCCB c\u1eaft h\u1ed3 quang b\u1eb1ng c\u00e1ch d\u1ef1a v\u00e0o \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi plasma qu\u00e1 nhi\u1ec7t b\u00ean trong bu\u1ed3ng d\u1eadp h\u1ed3 quang nh\u1ecf c\u1ee7a n\u00f3. \u00c1p su\u1ea5t n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c ch\u1ee9a trong v\u1ecf nh\u1ef1a xung quanh. N\u1ebfu d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n Icu, \u00e1p su\u1ea5t s\u1ebd v\u01b0\u1ee3t qua \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a nh\u1ef1a.<\/p>\n<blockquote><p>MCCB kh\u00f4ng ch\u1ec9 h\u1ecfng; n\u00f3 <strong>ph\u00e1t n\u1ed5<\/strong>. V\u1ecf b\u1ecb v\u1ee1, phun kim lo\u1ea1i n\u00f3ng ch\u1ea3y v\u00e0 kh\u00ed ion h\u00f3a (plasma) v\u00e0o t\u1ee7 \u0111i\u1ec7n, th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn s\u1ef1 c\u1ed1 to\u00e0n h\u1ec7 th\u1ed1ng.<\/p><\/blockquote>\n<p>Thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u00e0i s\u1ea3n c\u1ee7a b\u1ea1n tr\u1edf th\u00e0nh ngu\u1ed3n g\u1ed1c c\u1ee7a th\u1ea3m h\u1ecda.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p c\u1ee7a ACB (Ng\u01b0\u1eddi kh\u1ed5ng l\u1ed3 c\u00f4ng nghi\u1ec7p)<\/h3>\n<p>Aptomat kh\u00f4ng kh\u00ed (ACB) s\u1eed d\u1ee5ng m\u1ed9t nguy\u00ean t\u1eafc ho\u00e0n to\u00e0n kh\u00e1c:<\/p>\n<ul>\n<li><strong>C\u1ea5u tr\u00fac m\u1edf:<\/strong> ACB c\u00f3 bu\u1ed3ng h\u1ed3 quang h\u1edf r\u1ed9ng l\u1edbn v\u00e0 c\u00e1c ti\u1ebfp \u0111i\u1ec3m b\u1eb1ng \u0111\u1ed3ng l\u1edbn h\u01a1n nhi\u1ec1u.<\/li>\n<li><strong>Qu\u1ea3n l\u00fd h\u1ed3 quang:<\/strong> Ch\u00fang s\u1eed d\u1ee5ng l\u1ef1c \u0111i\u1ec7n t\u1eeb m\u1ea1nh v\u00e0 c\u00e1c t\u1ea5m c\u00e1ch \u0111i\u1ec7n l\u1edbn \u0111\u1ec3 nhanh ch\u00f3ng k\u00e9o d\u00e0i, l\u00e0m m\u00e1t v\u00e0 d\u1eadp t\u1eaft h\u1ed3 quang trong m\u1ed9t th\u1ec3 t\u00edch kh\u00f4ng kh\u00ed l\u1edbn, chuy\u1ec3n h\u01b0\u1edbng n\u0103ng l\u01b0\u1ee3ng m\u1ed9t c\u00e1ch an to\u00e0n.<\/li>\n<li><strong>Bi\u00ean \u0111\u1ed9 an to\u00e0n:<\/strong> \u0110\u1ecbnh m\u1ee9c Icu c\u1ee7a ACB th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb n\u01a1i MCCB k\u1ebft th\u00fac\u2014t\u1eeb 80kA v\u00e0 d\u1ec5 d\u00e0ng v\u01b0\u1ee3t qu\u00e1 100kA ho\u1eb7c 120kA.<\/li>\n<\/ul>\n<p>ACB \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd an to\u00e0n n\u0103ng l\u01b0\u1ee3ng ng\u1eafn m\u1ea1ch t\u1ed1i \u0111a m\u00e0 h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 t\u1ea1o ra v\u1ec1 m\u1eb7t v\u1eadt l\u00fd, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh ng\u01b0\u1eddi b\u1ea3o v\u1ec7 an to\u00e0n cu\u1ed1i c\u00f9ng.<\/p>\n<h2>3. Y\u00eau c\u1ea7u an to\u00e0n: Khi n\u00e0o b\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng ACB<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-19948\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Safety-Requirement-When-You-Must-Use-the-ACB.webp\" alt=\"The Safety Requirement: When You Must Use the ACB\" width=\"800\" height=\"800\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Safety-Requirement-When-You-Must-Use-the-ACB.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Safety-Requirement-When-You-Must-Use-the-ACB-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Safety-Requirement-When-You-Must-Use-the-ACB-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Safety-Requirement-When-You-Must-Use-the-ACB-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Safety-Requirement-When-You-Must-Use-the-ACB-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Safety-Requirement-When-You-Must-Use-the-ACB-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/11\/The-Safety-Requirement-When-You-Must-Use-the-ACB-100x100.webp 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>S\u1ef1 l\u1ef1a ch\u1ecdn gi\u1eefa hai lo\u1ea1i l\u00e0 v\u1ea5n \u0111\u1ec1 x\u00e1c \u0111\u1ecbnh vai tr\u00f2 trong m\u1ea1ng l\u01b0\u1edbi \u0111i\u1ec7n. N\u1ebfu b\u1ea1n \u0111ang thi\u1ebft k\u1ebf d\u1ecbch v\u1ee5 \u0111\u1ea7u v\u00e0o ch\u00ednh, m\u1ed1i quan t\u00e2m h\u00e0ng \u0111\u1ea7u c\u1ee7a b\u1ea1n l\u00e0 **An to\u00e0n v\u00e0 Kh\u1ea3 n\u0103ng s\u1ed1ng s\u00f3t**.<\/p>\n<p>B\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng ACB (ho\u1eb7c b\u1ea3o v\u1ec7 \u0111\u1ecbnh m\u1ee9c cao kh\u00e1c) khi:<\/p>\n<ul>\n<li><strong>Aptomat ch\u00ednh:<\/strong> D\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 t\u1ea1i d\u1ecbch v\u1ee5 \u0111\u1ea7u v\u00e0o ch\u00ednh l\u00e0 cao nh\u1ea5t, v\u00ec n\u00f3 g\u1ea7n ngu\u1ed3n \u0111i\u1ec7n v\u00f4 h\u1ea1n nh\u1ea5t (m\u00e1y bi\u1ebfn \u00e1p c\u1ee7a ti\u1ec7n \u00edch).<\/li>\n<li><strong>D\u1ecbch v\u1ee5 d\u00f2ng \u0111i\u1ec7n cao:<\/strong> C\u00e1c d\u1ecbch v\u1ee5 c\u00f3 \u0111\u1ecbnh m\u1ee9c 800A tr\u1edf l\u00ean th\u01b0\u1eddng b\u1eaft bu\u1ed9c s\u1eed d\u1ee5ng ACB do d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 cao v\u1ed1n c\u00f3 v\u00e0 s\u1ef1 c\u1ea7n thi\u1ebft ph\u1ea3i b\u1ea3o tr\u00ec l\u00e2u d\u00e0i.<\/li>\n<li><strong>T\u00ednh ch\u1ecdn l\u1ecdc quan tr\u1ecdng:<\/strong> ACB c\u00f3 c\u00e1c b\u1ed9 ph\u1eadn ng\u1eaft \u0111i\u1ec7n t\u1eed v\u01b0\u1ee3t tr\u1ed9i c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u1ed1i h\u1ee3p ch\u00ednh x\u00e1c v\u1edbi m\u1ecdi MCCB \u1edf h\u1ea1 ngu\u1ed3n, \u0111\u1ea3m b\u1ea3o ch\u1ec9 c\u00f3 aptomat s\u1ef1 c\u1ed1 g\u1ea7n nh\u1ea5t ng\u1eaft (m\u1ed9t t\u00ednh n\u0103ng quan tr\u1ecdng \u0111\u1ec3 gi\u1ea3m thi\u1ec3u th\u1eddi gian ng\u1eebng s\u1ea3n xu\u1ea5t).<\/li>\n<\/ul>\n<p>S\u1ef1 th\u1eadt l\u00e0, m\u1eb7c d\u00f9 MCCB 2500A c\u00f3 th\u1ec3 r\u1ebb h\u01a1n ban \u0111\u1ea7u, nh\u01b0ng ACB 2500A l\u00e0 thi\u1ebft b\u1ecb duy nh\u1ea5t \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u0111\u1ec3 s\u1ed1ng s\u00f3t trong tr\u01b0\u1eddng h\u1ee3p x\u1ea5u nh\u1ea5t. Khi s\u1ef1 an to\u00e0n c\u1ee7a to\u00e0n b\u1ed9 thanh c\u00e1i, t\u1ee7 \u0111i\u1ec7n v\u00e0 nh\u00e2n vi\u00ean c\u1ee7a b\u1ea1n b\u1ecb \u0111e d\u1ecda, kh\u1ea3 n\u0103ng c\u1eaft v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a ACB l\u00e0 m\u1ed9t ch\u00ednh s\u00e1ch b\u1ea3o hi\u1ec3m kh\u00f4ng th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n<p>ACB kh\u00f4ng t\u1ed1n k\u00e9m h\u01a1n\u2014n\u00f3 ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 th\u1ef1c hi\u1ec7n m\u1ed9t nhi\u1ec7m v\u1ee5 an to\u00e0n \u1edf m\u1ee9c cao h\u01a1n, kh\u00f4ng t\u00f9y ch\u1ecdn.<\/p>\n<hr \/>\n<h2>K\u1ef9 Thu\u1eadt Ch\u00ednh X\u00e1c Ch\u00fa \u00dd<\/h2>\n<p><strong>Ti\u00eau Chu\u1ea9n V\u00e0 Ngu\u1ed3n Tham Kh\u1ea3o<\/strong><\/p>\n<ul>\n<li><strong><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66277\" rel=\"nofollow noopener\" target=\"_blank\">TRUY\u1ec0N th\u00f4ng 60947-2<\/a>:<\/strong> Ti\u00eau chu\u1ea9n chi ph\u1ed1i cho c\u1ea3 MCCB v\u00e0 ACB, x\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh m\u1ee9c Icu v\u00e0 quy tr\u00ecnh th\u1eed nghi\u1ec7m.<\/li>\n<li><strong>Gi\u1edbi h\u1ea1n v\u1eadt l\u00fd:<\/strong> Icu c\u1ee7a MCCB b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1ecf nh\u1ef1a nhi\u1ec7t r\u1eafn v\u00e0 th\u1ec3 t\u00edch c\u1ee7a bu\u1ed3ng d\u1eadp h\u1ed3 quang; Icu c\u1ee7a ACB \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi th\u1ec3 t\u00edch d\u1eadp h\u1ed3 quang h\u1edf v\u00e0 t\u1ed1c \u0111\u1ed9 t\u00e1ch ti\u1ebfp \u0111i\u1ec3m.<\/li>\n<li><strong>Th\u00f4ng l\u1ec7 ng\u00e0nh:<\/strong> ACB l\u00e0 ti\u00eau chu\u1ea9n cho c\u00e1c t\u1ee7 \u0111i\u1ec7n ch\u00ednh tr\u00ean 800A do d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 cao, bi\u00ean \u0111\u1ed9 an to\u00e0n b\u1eaft bu\u1ed9c v\u00e0 y\u00eau c\u1ea7u b\u1ea3o tr\u00ec.<\/li>\n<\/ul>\n<p><strong>K\u1ecbp Th\u1eddi Tuy\u00ean B\u1ed1<\/strong><\/p>\n<p>T\u1ea5t c\u1ea3 c\u00e1c nguy\u00ean t\u1eafc li\u00ean quan \u0111\u1ebfn kh\u1ea3 n\u0103ng c\u1eaft (Icu), t\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 v\u00e0 gi\u1edbi h\u1ea1n v\u1eadt l\u00fd c\u1ee7a c\u00f4ng ngh\u1ec7 aptomat v\u1eabn l\u00e0 n\u1ec1n t\u1ea3ng cho th\u1ef1c h\u00e0nh k\u1ef9 thu\u1eadt \u0111i\u1ec7n hi\u1ec7n \u0111\u1ea1i k\u1ec3 t\u1eeb th\u00e1ng 11 n\u0103m 2025.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>You\u2019re reviewing the panel design budget. The specification calls for a 2500A main service entrance breaker. You find two options: Option A (MCCB): Cheap, compact, and rated for 2500A. Option B (ACB): Massive, bulky, and five times the price. The question inevitably lands on the electrical engineer&#8217;s desk: &#8220;Why are we paying so much for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19951,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","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":"","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":""},"categories":[1],"tags":[],"class_list":["post-19943","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/19943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/comments?post=19943"}],"version-history":[{"count":3,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/19943\/revisions"}],"predecessor-version":[{"id":19950,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/19943\/revisions\/19950"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/19951"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=19943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=19943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=19943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}