{"id":20573,"date":"2025-12-17T08:12:32","date_gmt":"2025-12-17T00:12:32","guid":{"rendered":"https:\/\/viox.com\/?p=20573"},"modified":"2025-12-04T23:48:44","modified_gmt":"2025-12-04T15:48:44","slug":"standard-breaker-sizes","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/standard-breaker-sizes\/","title":{"rendered":"K\u00edch c\u1ee1 ti\u00eau chu\u1ea9n c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch: \u0110\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n MCCB t\u1eeb 16A \u0111\u1ebfn 1600A"},"content":{"rendered":"<div class=\"product-intro\">\n<p>L\u1ef1a ch\u1ecdn \u0111\u00fang<a href=\"https:\/\/test.viox.com\/vi\/mccb\/\"> \u5851\u58f3\u65ad\u8def\u5668\uff08MCCB\uff09<\/a> b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c hi\u1ec3u c\u00e1c k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch. Kh\u00f4ng gi\u1ed1ng nh\u01b0 <a href=\"http:\/\/voix.com\/mcb\" rel=\"nofollow noopener\" target=\"_blank\">c\u1ea7u dao thu nh\u1ecf (MCB)<\/a> b\u1ea3o v\u1ec7 c\u00e1c m\u1ea1ch cu\u1ed1i c\u00f9ng, MCCB bao ph\u1ee7 m\u1ed9t ph\u1ea1m vi d\u00f2ng \u0111i\u1ec7n r\u1ed9ng h\u01a1n nhi\u1ec1u\u2014t\u1eeb b\u1ed9 c\u1ea5p ngu\u1ed3n nh\u00e1nh 16A \u0111\u1ebfn b\u1ed9 c\u1ea5p ngu\u1ed3n ch\u00ednh 1600A\u2014v\u00e0 vi\u1ec7c ch\u1ecdn \u0111\u1ecbnh m\u1ee9c ch\u00ednh x\u00e1c s\u1ebd \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn an to\u00e0n h\u1ec7 th\u1ed1ng, ph\u1ed1i h\u1ee3p v\u00e0 chi ph\u00ed d\u1ef1 \u00e1n.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y v\u1ea1ch ra c\u00e1c \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n ti\u00eau chu\u1ea9n ho\u00e0n ch\u1ec9nh c\u1ee7a ti\u00eau chu\u1ea9n IEC 60947-2, gi\u1ea3i th\u00edch c\u00e1c lo\u1ea1i k\u00edch th\u01b0\u1edbc khung v\u00e0 ch\u1ec9 cho b\u1ea1n c\u00e1ch kh\u1edbp c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch v\u1edbi \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n. Cho d\u00f9 b\u1ea1n \u0111ang \u0111\u1ecbnh c\u1ee1 b\u1ed9 c\u1ea5p ngu\u1ed3n \u0111\u1ed9ng c\u01a1, \u0111\u01b0\u1eddng d\u00e2y ph\u1ee5 c\u1ee7a t\u00f2a nh\u00e0 hay \u0111\u01b0\u1eddng d\u00e2y \u0111\u1ea7u v\u00e0o c\u1ee7a thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft, b\u1ea1n s\u1ebd t\u00ecm th\u1ea5y c\u00e1c chi ti\u1ebft k\u1ef9 thu\u1eadt v\u00e0 logic l\u1ef1a ch\u1ecdn b\u1ea1n c\u1ea7n.<\/p>\n<h2>Tham kh\u1ea3o nhanh: \u0110\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n MCCB ti\u00eau chu\u1ea9n<\/h2>\n<p>MCCB tu\u00e2n th\u1ee7 IEC c\u00f3 s\u1eb5n \u1edf c\u00e1c \u0111\u1ecbnh m\u1ee9c ti\u00eau chu\u1ea9n sau:<\/p>\n<p><strong>16A<\/strong> | <strong>20A<\/strong> | <strong>25A<\/strong> | <strong>32A<\/strong> | <strong>40A<\/strong> | <strong>50A<\/strong> | <strong>63A<\/strong> | <strong>80A<\/strong> | <strong>100<\/strong> | <strong>125<\/strong> | <strong>160A<\/strong> | <strong>200A<\/strong> | <strong>250A<\/strong> | <strong>320A<\/strong> | <strong>400A<\/strong> | <strong>500A<\/strong> | <strong>630A<\/strong> | <strong>800A<\/strong> | <strong>1000A<\/strong> | <strong>1250A<\/strong> | <strong>1600A<\/strong><\/p>\n<p>Kh\u00f4ng ph\u1ea3i nh\u00e0 s\u1ea3n xu\u1ea5t n\u00e0o c\u0169ng cung c\u1ea5p m\u1ecdi \u0111\u1ecbnh m\u1ee9c trong m\u1ecdi khung. K\u00edch th\u01b0\u1edbc khung (nh\u1ecf, trung b\u00ecnh ho\u1eb7c l\u1edbn) x\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n n\u00e0o c\u00f3 s\u1eb5n v\u00e0 kh\u1ea3 n\u0103ng c\u1eaft (Icu\/Ics) m\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/mccb-frame-size-comparison-showing-small-medium-and-large-frame-breakers.webp\" alt=\"MCCB Frame Size Comparison showing small, medium, and large frame breakers\" \/><figcaption>H\u00ecnh 1: S\u1ef1 ti\u1ebfn tri\u1ec3n v\u1ec1 k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd c\u1ee7a MCCB tr\u00ean c\u00e1c lo\u1ea1i khung. T\u1eeb tr\u00e1i sang ph\u1ea3i: Khung nh\u1ecf (63A), Khung trung b\u00ecnh (400A), Khung l\u1edbn (1600A). K\u00edch th\u01b0\u1edbc khung x\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a v\u00e0 kh\u1ea3 n\u0103ng c\u1eaft c\u00f3 s\u1eb5n.<\/figcaption><\/figure>\n<h2>T\u00ecm hi\u1ec3u v\u1ec1 \u0110\u1ecbnh m\u1ee9c Ti\u00eau chu\u1ea9n IEC 60947-2<\/h2>\n<p>IEC 60947-2 l\u00e0 ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf x\u00e1c \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u v\u1ec1 hi\u1ec7u su\u1ea5t \u0111\u1ed1i v\u1edbi b\u1ed9 ng\u1eaft m\u1ea1ch h\u1ea1 th\u1ebf, bao g\u1ed3m t\u1ea5t c\u1ea3 MCCB. Khi b\u1ea1n th\u1ea5y \u201cIEC 60947-2\u201d \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u tr\u00ean b\u1ea3ng t\u00ean c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch, \u0111i\u1ec1u \u0111\u00f3 x\u00e1c nh\u1eadn thi\u1ebft b\u1ecb \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u00e0 ch\u1ee9ng nh\u1eadn \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau ch\u00ed \u0111i\u1ec7n, c\u01a1 v\u00e0 an to\u00e0n c\u1ee5 th\u1ec3.<\/p>\n<h3>C\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ecbnh m\u1ee9c ch\u00ednh<\/h3>\n<p>M\u1ecdi b\u1ea3ng d\u1eef li\u1ec7u MCCB \u0111\u1ec1u bao g\u1ed3m c\u00e1c \u0111\u1ecbnh m\u1ee9c thi\u1ebft y\u1ebfu sau:<\/p>\n<p><strong>In (D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c)<\/strong>: D\u00f2ng \u0111i\u1ec7n li\u00ean t\u1ee5c t\u1ed1i \u0111a m\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 mang \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng tham chi\u1ebfu (th\u01b0\u1eddng l\u00e0 40\u00b0C) m\u00e0 kh\u00f4ng b\u1ecb ng\u1eaft. \u0110\u00e2y l\u00e0 \u201ck\u00edch th\u01b0\u1edbc\u201d c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch\u2014v\u00ed d\u1ee5: MCCB 250A c\u00f3 In = 250A.<\/p>\n<p><strong>Ue (\u0110i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng \u0111\u1ecbnh m\u1ee9c)<\/strong>: \u0110i\u1ec7n \u00e1p m\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng. C\u00e1c \u0111\u1ecbnh m\u1ee9c ph\u1ed5 bi\u1ebfn bao g\u1ed3m 230V, 400V, 690V AC cho h\u1ec7 th\u1ed1ng ba pha ho\u1eb7c 250V DC cho c\u00e1c \u1ee9ng d\u1ee5ng pin v\u00e0 n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi.<\/p>\n<p><strong>Icu (Kh\u1ea3 n\u0103ng c\u1eaft ng\u1eafn m\u1ea1ch c\u1ef1c \u0111\u1ea1i \u0111\u1ecbnh m\u1ee9c)<\/strong>: D\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 t\u1ed1i \u0111a (t\u00ednh b\u1eb1ng kA) m\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 ng\u1eaft m\u1ed9t c\u00e1ch an to\u00e0n m\u1ed9t l\u1ea7n. Sau s\u1ef1 c\u1ed1 \u1edf m\u1ee9c Icu, b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 ti\u1ebfp t\u1ee5c s\u1eed d\u1ee5ng. C\u00e1c gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh dao \u0111\u1ed9ng t\u1eeb 25kA \u0111\u1ebfn 100kA t\u00f9y thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc khung.<\/p>\n<p><strong>Ics (Kh\u1ea3 n\u0103ng c\u1eaft ng\u1eafn m\u1ea1ch d\u1ecbch v\u1ee5 \u0111\u1ecbnh m\u1ee9c)<\/strong>: M\u1ee9c d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 m\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 ng\u1eaft v\u00e0 v\u1eabn c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c \u0111\u1ec3 ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng. IEC \u0111\u1ecbnh ngh\u0129a Ics l\u00e0 m\u1ed9t t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m c\u1ee7a Icu\u2014th\u01b0\u1eddng l\u00e0 25%, 50%, 75% ho\u1eb7c 100%. \u0110\u1ed1i v\u1edbi c\u00e1c c\u01a1 s\u1edf quan tr\u1ecdng, h\u00e3y ch\u1ec9 \u0111\u1ecbnh Ics = 100%; \u0111\u1ed1i v\u1edbi c\u00e1c t\u00f2a nh\u00e0 th\u01b0\u01a1ng m\u1ea1i, 75% l\u00e0 th\u00f4ng l\u1ec7 ti\u00eau chu\u1ea9n.<\/p>\n<h3>C\u00e1c lo\u1ea1i s\u1eed d\u1ee5ng<\/h3>\n<p>IEC 60947-2 \u0111\u1ecbnh ngh\u0129a hai lo\u1ea1i:<\/p>\n<ul>\n<li><strong>Lo\u1ea1i A<\/strong>: B\u1ed9 ng\u1eaft m\u1ea1ch \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ng\u1eaft t\u1ee9c th\u1eddi m\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ed9 tr\u1ec5 th\u1eddi gian c\u1ed1 \u00fd. H\u1ea7u h\u1ebft c\u00e1c MCCB thu\u1ed9c lo\u1ea1i n\u00e0y \u0111\u1ec3 ph\u00e2n ph\u1ed1i chung v\u00e0 b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1.<\/li>\n<li><strong>Lo\u1ea1i B<\/strong>: B\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 \u0111\u1ed9 tr\u1ec5 th\u1eddi gian c\u1ed1 \u00fd (kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng) \u0111\u1ec3 ph\u1ed1i h\u1ee3p ch\u1ecdn l\u1ecdc v\u1edbi c\u00e1c thi\u1ebft b\u1ecb h\u1ea1 ngu\u1ed3n. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u00e1c v\u1ecb tr\u00ed th\u01b0\u1ee3ng ngu\u1ed3n n\u01a1i b\u1ea1n c\u1ea7n t\u00ednh ch\u1ecdn l\u1ecdc.<\/li>\n<\/ul>\n<h3>T\u1ea1i sao c\u00e1c \u0111\u1ecbnh m\u1ee9c n\u00e0y l\u1ea1i quan tr\u1ecdng<\/h3>\n<p>Khi \u0111\u1ecbnh c\u1ee1 MCCB, b\u1ea1n ph\u1ea3i \u0111\u1ea3m b\u1ea3o:<\/p>\n<ul>\n<li>In ph\u00f9 h\u1ee3p ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 d\u00f2ng \u0111i\u1ec7n t\u1ea3i (c\u00f3 bi\u00ean \u0111\u1ed9 cho d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng v\u00e0 t\u0103ng tr\u01b0\u1edfng trong t\u01b0\u01a1ng lai)<\/li>\n<li>Icu \u0111\u00e1p \u1ee9ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 ti\u1ec1m n\u0103ng t\u1ea1i \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t<\/li>\n<li>Ics ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng c\u1ee7a \u1ee9ng d\u1ee5ng (75-100%)<\/li>\n<li>K\u00edch th\u01b0\u1edbc khung ph\u00f9 h\u1ee3p v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p In v\u00e0 Icu c\u1ea7n thi\u1ebft<\/li>\n<\/ul>\n<p>T\u1ea3i 250A kh\u00f4ng t\u1ef1 \u0111\u1ed9ng y\u00eau c\u1ea7u b\u1ed9 ng\u1eaft m\u1ea1ch 250A\u2014b\u1ea1n c\u0169ng c\u1ea7n x\u00e1c minh m\u1ee9c s\u1ef1 c\u1ed1, y\u00eau c\u1ea7u ph\u1ed1i h\u1ee3p v\u00e0 li\u1ec7u c\u00f3 \u00e1p d\u1ee5ng gi\u1ea3m \u0111\u1ecbnh m\u1ee9c hay kh\u00f4ng (nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng cao, nh\u00f3m ho\u1eb7c h\u00e0m l\u01b0\u1ee3ng s\u00f3ng h\u00e0i).<\/p>\n<h2>C\u00e1c lo\u1ea1i k\u00edch th\u01b0\u1edbc khung MCCB<\/h2>\n<h3>Ph\u00e2n lo\u1ea1i k\u00edch th\u01b0\u1edbc khung<\/h3>\n<p>M\u1eb7c d\u00f9 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng c\u00e1c quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean kh\u00e1c nhau, nh\u01b0ng ng\u00e0nh c\u00f4ng nghi\u1ec7p c\u00f4ng nh\u1eadn ba lo\u1ea1i r\u1ed9ng:<\/p>\n<table>\n<tbody>\n<tr>\n<td><strong>Lo\u1ea1i khung<\/strong><\/td>\n<td><strong>D\u1ea3i d\u00f2ng \u0111i\u1ec7n \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\n<td><strong>Ph\u1ea1m vi Icu \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\n<td><strong>\u1ee8ng d\u1ee5ng ph\u1ed5 bi\u1ebfn<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Khung nh\u1ecf<\/strong><\/td>\n<td>16A \u2013 250A<\/td>\n<td>25kA \u2013 50kA<\/td>\n<td>M\u1ea1ch nh\u00e1nh, b\u1ed9 c\u1ea5p ngu\u1ed3n nh\u1ecf, b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1<\/td>\n<\/tr>\n<tr>\n<td><strong>Khung trung b\u00ecnh<\/strong><\/td>\n<td>250A \u2013 630A<\/td>\n<td>35kA \u2013 70kA<\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y ph\u1ee5, \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n cho t\u00f2a nh\u00e0, b\u1ea3ng ph\u00e2n ph\u1ed1i<\/td>\n<\/tr>\n<tr>\n<td><strong>Khung l\u1edbn<\/strong><\/td>\n<td>630A \u2013 1600A<\/td>\n<td>50kA \u2013 100kA<\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y \u0111\u1ea7u v\u00e0o ch\u00ednh, thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft, \u0111\u01b0\u1eddng d\u00e2y ch\u00ednh c\u00f4ng nghi\u1ec7p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>T\u1ea1i sao k\u00edch th\u01b0\u1edbc khung l\u1ea1i quan tr\u1ecdng<\/h3>\n<p><strong>Gi\u1edbi h\u1ea1n kh\u1ea3 n\u0103ng c\u1eaft<\/strong>: Khung l\u1edbn h\u01a1n c\u00f3 th\u1ec3 ng\u1eaft d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 cao h\u01a1n. N\u1ebfu \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t c\u1ee7a b\u1ea1n c\u00f3 d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 ti\u1ec1m n\u0103ng l\u00e0 65kA, b\u1ea1n s\u1ebd c\u1ea7n khung trung b\u00ecnh ho\u1eb7c l\u1edbn\u2014khung nh\u1ecf th\u01b0\u1eddng \u0111\u1ea1t t\u1ed1i \u0111a 50kA.<\/p>\n<p><strong>Kh\u00f4ng gian v\u1eadt l\u00fd<\/strong>: MCCB khung l\u1edbn 1600A c\u00f3 th\u1ec3 r\u1ed9ng 300mm tr\u1edf l\u00ean, trong khi b\u1ed9 ng\u1eaft m\u1ea1ch khung nh\u1ecf 63A c\u00f3 th\u1ec3 l\u00e0 70mm. Thi\u1ebft k\u1ebf b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ph\u1ea3i t\u00ednh \u0111\u1ebfn c\u00e1c k\u00edch th\u01b0\u1edbc n\u00e0y, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c d\u1ef1 \u00e1n trang b\u1ecb th\u00eam.<\/p>\n<p><strong>T\u1ed1i \u01b0u h\u00f3a chi ph\u00ed<\/strong>: Kh\u00f4ng ch\u1ec9 \u0111\u1ecbnh qu\u00e1 m\u1ee9c. \u1ee8ng d\u1ee5ng 200A v\u1edbi m\u1ee9c s\u1ef1 c\u1ed1 30kA kh\u00f4ng c\u1ea7n b\u1ed9 ng\u1eaft m\u1ea1ch khung l\u1edbn. S\u1eed d\u1ee5ng b\u1ed9 ph\u1eadn 250A khung nh\u1ecf \u0111\u1ec3 ti\u1ebft ki\u1ec7m kh\u00f4ng gian v\u00e0 chi ph\u00ed b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n.<\/p>\n<p><strong>Ph\u1ea1m vi \u0111i\u1ec1u ch\u1ec9nh<\/strong>: C\u00e1c b\u1ed9 ph\u1eadn ng\u1eaft \u0111i\u1ec7n t\u1eed trong khung l\u1edbn h\u01a1n th\u01b0\u1eddng cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh t\u1ea1i ch\u1ed7 c\u00e1c c\u00e0i \u0111\u1eb7t In, Ir (nhi\u1ec7t) v\u00e0 Im (t\u1eeb). C\u00e1c khung nh\u1ecf c\u00f3 chuy\u1ebfn \u0111i nhi\u1ec7t-t\u1eeb th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh.<\/p>\n<h3>Khung so v\u1edbi \u0110\u1ecbnh m\u1ee9c: M\u1ed9t v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/h3>\n<p>Xem x\u00e9t m\u1ed9t b\u1ed9 c\u1ea5p ngu\u1ed3n 400A trong m\u1ed9t t\u00f2a nh\u00e0 th\u01b0\u01a1ng m\u1ea1i v\u1edbi m\u1ee9c s\u1ef1 c\u1ed1 40kA:<\/p>\n<ul>\n<li><strong>L\u1ef1a ch\u1ecdn 1<\/strong>: Ch\u1ecdn MCCB khung trung b\u00ecnh \u0111\u1ecbnh m\u1ee9c 400A \/ 50kA (In=400A, Icu=50kA)<\/li>\n<li><strong>L\u1ef1a ch\u1ecdn 2<\/strong>: Ch\u1ecdn MCCB khung l\u1edbn \u0111\u1ecbnh m\u1ee9c 400A \/ 65kA (In=400A, Icu=65kA)<\/li>\n<\/ul>\n<p>C\u1ea3 hai \u0111\u1ec1u \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u t\u1ea3i 400A, nh\u01b0ng L\u1ef1a ch\u1ecdn 1 s\u1eed d\u1ee5ng khung nh\u1ecf h\u01a1n, \u00edt t\u1ed1n k\u00e9m h\u01a1n, ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c s\u1ef1 c\u1ed1 40kA. L\u1ef1a ch\u1ecdn 2 cung c\u1ea5p bi\u00ean \u0111\u1ed9 nh\u01b0ng l\u00e3ng ph\u00ed kh\u00f4ng gian v\u00e0 ng\u00e2n s\u00e1ch c\u1ee7a b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 <strong>ch\u1ecdn khung nh\u1ecf nh\u1ea5t<\/strong> \u0111\u00e1p \u1ee9ng c\u1ea3 y\u00eau c\u1ea7u In v\u00e0 Icu c\u1ee7a b\u1ea1n.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/standard-mccb-current-ratings-chart-organized-by-frame-size.webp\" alt=\"Standard MCCB Current Ratings Chart organized by frame size\" \/><figcaption>H\u00ecnh 2: B\u1ea3ng x\u1ebfp h\u1ea1ng d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7y \u0111\u1ee7 theo ti\u00eau chu\u1ea9n IEC 60947-2 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo lo\u1ea1i khung. Khung nh\u1ecf (16-250A) x\u1eed l\u00fd c\u00e1c m\u1ea1ch nh\u00e1nh v\u00e0 b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1; khung trung b\u00ecnh (250-630A) ph\u1ee5c v\u1ee5 c\u00e1c \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n v\u00e0 \u0111\u01b0\u1eddng d\u00e2y ph\u1ee5 c\u1ee7a t\u00f2a nh\u00e0; khung l\u1edbn (630-1600A) b\u1ea3o v\u1ec7 \u0111\u01b0\u1eddng d\u00e2y \u0111\u1ebfn ch\u00ednh v\u00e0 thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft.<\/figcaption><\/figure>\n<h2>MCCB khung nh\u1ecf (16A \u2013 250A)<\/h2>\n<p>MCCB khung nh\u1ecf x\u1eed l\u00fd ph\u1ea7n l\u1edbn c\u00e1c \u1ee9ng d\u1ee5ng m\u1ea1ch nh\u00e1nh, \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n ph\u1ee5 v\u00e0 b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1 trong m\u00f4i tr\u01b0\u1eddng th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p nh\u1eb9. Ch\u00fang l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng gi\u1eefa MCB (l\u00ean \u0111\u1ebfn 125A) v\u00e0 c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch ph\u00e2n ph\u1ed1i l\u1edbn h\u01a1n.<\/p>\n<h3>\u0110\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n ti\u00eau chu\u1ea9n<\/h3>\n<table>\n<tbody>\n<tr>\n<td><strong>\u0110\u1ecbnh m\u1ee9c (A)<\/strong><\/td>\n<td><strong>\u0110i\u1ec3n H\u00ecnh \u1ee8ng D\u1ee5ng<\/strong><\/td>\n<td><strong>Lo\u1ea1i Trip ph\u1ed5 bi\u1ebfn<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>16A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n \u0111\u1ed9ng c\u01a1 nh\u1ecf, b\u1ea3ng \u0111\u00e8n<\/td>\n<td>Nhi\u1ec7t-T\u1eeb<\/td>\n<\/tr>\n<tr>\n<td><strong>20A<\/strong><\/td>\n<td>M\u1ea1ch thi\u1ebft b\u1ecb, m\u00e1y b\u01a1m nh\u1ecf<\/td>\n<td>Nhi\u1ec7t-T\u1eeb<\/td>\n<\/tr>\n<tr>\n<td><strong>25A<\/strong><\/td>\n<td>C\u00e1c thi\u1ebft b\u1ecb HVAC, m\u00e1y m\u00f3c nh\u1ecf<\/td>\n<td>Nhi\u1ec7t-T\u1eeb<\/td>\n<\/tr>\n<tr>\n<td><strong>32A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n \u0111\u1ed9ng c\u01a1 (l\u00ean \u0111\u1ebfn 15kW \u1edf 400V)<\/td>\n<td>Nhi\u1ec7t-T\u1eeb<\/td>\n<\/tr>\n<tr>\n<td><strong>40A<\/strong><\/td>\n<td>Thi\u1ebft b\u1ecb nh\u00e0 b\u1ebfp th\u01b0\u01a1ng m\u1ea1i, m\u00e1y l\u00e0m l\u1ea1nh<\/td>\n<td>Nhi\u1ec7t-T\u1eeb<\/td>\n<\/tr>\n<tr>\n<td><strong>50A<\/strong><\/td>\n<td>\u0110\u1ed9ng c\u01a1 trung b\u00ecnh (22kW), \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n UPS<\/td>\n<td>Nhi\u1ec7t-T\u1eeb<\/td>\n<\/tr>\n<tr>\n<td><strong>63A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n ph\u1ee5 ph\u00e2n ph\u1ed1i, \u0111\u1ed9ng c\u01a1 l\u1edbn (30kW)<\/td>\n<td>Nhi\u1ec7t-T\u1eeb \/ \u0110i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>80A<\/strong><\/td>\n<td>Ph\u00e2n ph\u1ed1i ph\u1ee5 t\u00f2a nh\u00e0, trung t\u00e2m \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1<\/td>\n<td>Nhi\u1ec7t-T\u1eeb \/ \u0110i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>100<\/strong><\/td>\n<td>B\u1ea3ng ph\u00e2n ph\u1ed1i t\u1ea7ng, m\u1ea1ch thang m\u00e1y<\/td>\n<td>Nhi\u1ec7t-T\u1eeb \/ \u0110i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>125<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng tr\u1ee5c t\u00f2a nh\u00e0, l\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 th\u01b0\u01a1ng m\u1ea1i nh\u1ecf<\/td>\n<td>\u0110i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>160A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y ph\u1ee5 ch\u00ednh, c\u00f4ng t\u1eafc chuy\u1ec3n m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/td>\n<td>\u0110i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>200A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y ph\u1ee5 ch\u00ednh th\u01b0\u01a1ng m\u1ea1i, \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n c\u00f4ng nghi\u1ec7p nh\u1ecf<\/td>\n<td>\u0110i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>250A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n ch\u00ednh t\u00f2a nh\u00e0, ph\u00e2n ph\u1ed1i c\u00f4ng nghi\u1ec7p<\/td>\n<td>\u0110i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u0110\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt<\/h3>\n<p><strong>Kh\u1ea3 N\u0103ng Ph\u00e1 V\u1ee1<\/strong>: MCCB khung nh\u1ecf th\u01b0\u1eddng cung c\u1ea5p \u0111\u1ecbnh m\u1ee9c Icu t\u1eeb 25kA \u0111\u1ebfn 50kA. \u0110\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c t\u00f2a nh\u00e0 th\u01b0\u01a1ng m\u1ea1i (m\u1ee9c s\u1ef1 c\u1ed1 20-35kA), khung 36kA ho\u1eb7c 50kA cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<p><strong>C\u00f4ng ngh\u1ec7 Trip<\/strong>:<\/p>\n<ul>\n<li><strong>16A-63A<\/strong>: Th\u01b0\u1eddng l\u00e0 nhi\u1ec7t-t\u1eeb c\u1ed1 \u0111\u1ecbnh (l\u01b0\u1ee1ng kim + trip \u0111i\u1ec7n t\u1eeb)<\/li>\n<li><strong>63A-250A<\/strong>: C\u00f3 s\u1eb5n c\u1ea3 phi\u00ean b\u1ea3n nhi\u1ec7t-t\u1eeb c\u1ed1 \u0111\u1ecbnh v\u00e0 \u0111i\u1ec7n t\u1eed c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh<\/li>\n<li>C\u00e1c b\u1ed9 trip \u0111i\u1ec7n t\u1eed cung c\u1ea5p c\u00e1c c\u00e0i \u0111\u1eb7t Ir (qu\u00e1 t\u1ea3i) v\u00e0 Im (ng\u1eafn m\u1ea1ch) c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh, h\u1eefu \u00edch cho vi\u1ec7c ph\u1ed1i h\u1ee3p \u0111\u1ed9ng c\u01a1<\/li>\n<\/ul>\n<p><strong>S\u1ed1 c\u1ef1c c\u00f3 s\u1eb5n<\/strong>: C\u1ea5u h\u00ecnh 1P, 2P, 3P, 4P. L\u01b0u \u00fd r\u1eb1ng MCCB 1P \u00edt ph\u1ed5 bi\u1ebfn h\u01a1n MCB cho c\u00e1c m\u1ea1ch m\u1ed9t pha\u2014h\u1ea7u h\u1ebft c\u00e1c MCCB khung nh\u1ecf b\u1eaft \u0111\u1ea7u t\u1eeb 2P ho\u1eb7c 3P.<\/p>\n<h3>V\u00ed d\u1ee5 v\u1ec1 b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1<\/h3>\n<p>\u0110\u1ed1i v\u1edbi \u0111\u1ed9ng c\u01a1 ba pha 30kW \/ 400V (In \u2248 57A \u0111\u1ea7y t\u1ea3i):<\/p>\n<ol>\n<li><strong>Ch\u1ecdn \u0111\u1ecbnh m\u1ee9c b\u1ed9 ng\u1eaft m\u1ea1ch<\/strong>: Ch\u1ecdn MCCB 63A (k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n ti\u1ebfp theo tr\u00ean 57A)<\/li>\n<li><strong>X\u00e1c minh kh\u1ea3 n\u0103ng c\u1eaft<\/strong>: N\u1ebfu m\u1ee9c s\u1ef1 c\u1ed1 l\u00e0 28kA, h\u00e3y ch\u1ec9 \u0111\u1ecbnh Icu 36kA ho\u1eb7c 50kA<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t Trip<\/strong>: S\u1eed d\u1ee5ng trip \u0111i\u1ec7n t\u1eed v\u1edbi Ir c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf 0,95 x In (b\u1ea3o v\u1ec7 nhi\u1ec7t 54A)<\/li>\n<li><strong>Ph\u1ed1i h\u1ee3p<\/strong>: \u0110\u1ea3m b\u1ea3o ng\u01b0\u1ee1ng t\u1eeb Im &gt; d\u00f2ng kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1 (th\u01b0\u1eddng l\u00e0 6-8 x In)<\/li>\n<\/ol>\n<h3>Khi n\u00e0o n\u00ean ch\u1ecdn khung nh\u1ecf<\/h3>\n<ul>\n<li><strong>D\u00f2ng t\u1ea3i<\/strong> \u2264 250A<\/li>\n<li><strong>M\u1ee9c s\u1ef1 c\u1ed1<\/strong> \u2264 50kA<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng<\/strong> li\u00ean quan \u0111\u1ebfn \u0111\u1ed9ng c\u01a1, m\u00e1y m\u00f3c ho\u1eb7c ph\u00e2n ph\u1ed1i ph\u1ee5 t\u00f2a nh\u00e0<\/li>\n<li><strong>Kh\u00f4ng gian<\/strong> b\u1ecb h\u1ea1n ch\u1ebf (th\u01b0\u1eddng r\u1ed9ng 70-140mm t\u00f9y thu\u1ed9c v\u00e0o s\u1ed1 c\u1ef1c)<\/li>\n<\/ul>\n<p>\u0110\u1ed1i v\u1edbi \u0111\u1ecbnh m\u1ee9c th\u1ea5p h\u01a1n (16-32A) b\u1ea3o v\u1ec7 t\u1ea3i \u0111i\u1ec7n tr\u1edf \u0111\u01a1n gi\u1ea3n, MCB c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed h\u01a1n. Ch\u1ecdn MCCB khi b\u1ea1n c\u1ea7n c\u00e0i \u0111\u1eb7t trip c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh, kh\u1ea3 n\u0103ng c\u1eaft cao h\u01a1n ho\u1eb7c ph\u1ed1i h\u1ee3p ch\u1ecdn l\u1ecdc t\u1ed1t h\u01a1n.<\/p>\n<h2>MCCB khung trung b\u00ecnh (250A \u2013 630A)<\/h2>\n<p>MCCB khung trung b\u00ecnh \u0111\u00f3ng vai tr\u00f2 l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p. Ch\u00fang b\u1ea3o v\u1ec7 \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n t\u00f2a nh\u00e0, \u0111\u01b0\u1eddng d\u00e2y ph\u1ee5 ch\u00ednh v\u00e0 th\u1ee9 c\u1ea5p m\u00e1y bi\u1ebfn \u00e1p trung th\u1ebf. Ph\u1ea1m vi n\u00e0y bao g\u1ed3m ph\u1ea7n l\u1edbn c\u00e1c \u1ee9ng d\u1ee5ng b\u1ea3ng ph\u00e2n ph\u1ed1i ch\u00ednh trong c\u00e1c t\u00f2a nh\u00e0 v\u0103n ph\u00f2ng, trung t\u00e2m mua s\u1eafm v\u00e0 c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t.<\/p>\n<h3>\u0110\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n ti\u00eau chu\u1ea9n<\/h3>\n<table>\n<tbody>\n<tr>\n<td><strong>\u0110\u1ecbnh m\u1ee9c (A)<\/strong><\/td>\n<td><strong>\u0110i\u1ec3n H\u00ecnh \u1ee8ng D\u1ee5ng<\/strong><\/td>\n<td><strong>Ph\u1ea1m vi Icu \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>250A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n ch\u00ednh t\u00f2a nh\u00e0, ph\u00e2n ph\u1ed1i ph\u1ee5 c\u00f4ng nghi\u1ec7p<\/td>\n<td>35kA \u2013 65kA<\/td>\n<\/tr>\n<tr>\n<td><strong>320A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n ch\u00ednh th\u01b0\u01a1ng m\u1ea1i, t\u1ea3i c\u00f4ng nghi\u1ec7p trung b\u00ecnh<\/td>\n<td>35kA \u2013 65kA<\/td>\n<\/tr>\n<tr>\n<td><strong>400A<\/strong><\/td>\n<td>L\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 t\u00f2a nh\u00e0 (nh\u1ecf-trung b\u00ecnh), thi\u1ebft b\u1ecb quy tr\u00ecnh<\/td>\n<td>35kA \u2013 70kA<\/td>\n<\/tr>\n<tr>\n<td><strong>500A<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n l\u1edbn c\u1ee7a t\u00f2a nh\u00e0, \u0111\u01b0\u1eddng d\u00e2y ch\u00ednh c\u00f4ng nghi\u1ec7p<\/td>\n<td>50kA \u2013 70kA<\/td>\n<\/tr>\n<tr>\n<td><strong>630A<\/strong><\/td>\n<td>B\u1ea3ng ph\u00e2n ph\u1ed1i ch\u00ednh, b\u1ea3o v\u1ec7 th\u1ee9 c\u1ea5p m\u00e1y bi\u1ebfn \u00e1p<\/td>\n<td>50kA \u2013 85kA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u0110\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt<\/h3>\n<p><strong>Kh\u1ea3 N\u0103ng Ph\u00e1 V\u1ee1<\/strong>: Khung trung b\u00ecnh cung c\u1ea5p \u0111\u1ecbnh m\u1ee9c Icu cao h\u01a1n (35-85kA) \u0111\u1ec3 x\u1eed l\u00fd d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 t\u0103ng cao \u0111i\u1ec3n h\u00ecnh t\u1ea1i c\u00e1c \u0111i\u1ec3m ph\u00e2n ph\u1ed1i ch\u00ednh. C\u00e1c \u0111\u1ecba \u0111i\u1ec3m c\u00f4ng nghi\u1ec7p c\u00f3 ph\u00e1t \u0111i\u1ec7n t\u1ea1i ch\u1ed7 ho\u1eb7c gh\u00e9p n\u1ed1i m\u00e1y bi\u1ebfn \u00e1p g\u1ea7n th\u01b0\u1eddng th\u1ea5y m\u1ee9c s\u1ef1 c\u1ed1 trong ph\u1ea1m vi 40-65kA.<\/p>\n<p><strong>\u0110i\u1ec7n T\u1eed \u0110\u01a1n V\u1ecb Chuy\u1ebfn \u0110i<\/strong>: G\u1ea7n nh\u01b0 t\u1ea5t c\u1ea3 c\u00e1c MCCB khung trung b\u00ecnh \u0111\u1ec1u s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 trip \u0111i\u1ec7n t\u1eed v\u1edbi:<\/p>\n<ul>\n<li><strong>Ir (Qu\u00e1 t\u1ea3i)<\/strong>: C\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh t\u1eeb 0,4 \u0111\u1ebfn 1,0 x In, b\u1ea3o v\u1ec7 nhi\u1ec7t c\u00f3 tr\u1ec5 th\u1eddi gian<\/li>\n<li><strong>Isd (Tr\u1ec5 ng\u1eafn)<\/strong>: Ng\u01b0\u1ee1ng ng\u1eafn m\u1ea1ch t\u1ee9c th\u1eddi c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh, th\u01b0\u1eddng l\u00e0 1.5-10 x In<\/li>\n<li><strong>Ii (T\u1ee9c th\u1eddi)<\/strong>: Chuy\u1ebfn t\u1eeb do t\u1eeb t\u00ednh cho c\u00e1c s\u1ef1 c\u1ed1 d\u00f2ng \u0111i\u1ec7n cao (t\u00f9y ch\u1ecdn tr\u00ean m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb)<\/li>\n<li><strong>L\u1ed7i ti\u1ebfp \u0111\u1ea5t<\/strong>: M\u00f4-\u0111un b\u1ea3o v\u1ec7 ch\u1ea1m \u0111\u1ea5t t\u00f9y ch\u1ecdn \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng an to\u00e0n<\/li>\n<\/ul>\n<p><strong>Chi\u1ec1u r\u1ed9ng khung<\/strong>: D\u1ef1 ki\u1ebfn chi\u1ec1u r\u1ed9ng 140-180mm cho c\u00e1c thi\u1ebft b\u1ecb 3 c\u1ef1c, 190-240mm cho 4 c\u1ef1c. L\u00ean k\u1ebf ho\u1ea1ch k\u00edch th\u01b0\u1edbc c\u1eaft b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ea9n th\u1eadn\u2014nh\u1eefng b\u1ed9 ng\u1eaft m\u1ea1ch n\u00e0y chi\u1ebfm nhi\u1ec1u kh\u00f4ng gian h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c khung nh\u1ecf.<\/p>\n<p><strong>Giao ti\u1ebfp<\/strong>: Nhi\u1ec1u MCCB khung trung b\u00ecnh cung c\u1ea5p c\u00e1c m\u00f4-\u0111un giao ti\u1ebfp (Modbus RTU, Profibus, Ethernet) \u0111\u1ec3 t\u00edch h\u1ee3p v\u00e0o h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u00f2a nh\u00e0 (BMS) ho\u1eb7c SCADA.<\/p>\n<h3>S\u1ef1 ph\u1ed1i h\u1ee3p v\u00e0 t\u00ednh ch\u1ecdn l\u1ecdc<\/h3>\n<p>\u1ede m\u1ee9c d\u00f2ng \u0111i\u1ec7n n\u00e0y, <strong>ph\u1ed1i h\u1ee3p ch\u1ecdn l\u1ecdc<\/strong> tr\u1edf n\u00ean quan tr\u1ecdng. B\u1ea1n c\u1ea7n ph\u00e2n t\u00edch \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch 630A \u1edf ngu\u1ed3n v\u00e0 250A \u1edf h\u1ea1 ngu\u1ed3n ph\u00e2n bi\u1ec7t \u0111\u00fang c\u00e1ch:<\/p>\n<ul>\n<li><strong>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng ngh\u1ec7 chuy\u1ebfn kh\u00e1c nhau<\/strong>: \u0110i\u1ec7n t\u1eed \u1edf ngu\u1ed3n (tr\u00ec ho\u00e3n th\u1eddi gian c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh) + nhi\u1ec7t-t\u1eeb \u1edf h\u1ea1 ngu\u1ed3n (nhanh)<\/li>\n<li><strong>X\u00e1c minh \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n<\/strong>: \u0110\u1ea3m b\u1ea3o th\u1eddi gian ph\u00e2n bi\u1ec7t \u00edt nh\u1ea5t 100-200ms \u1edf t\u1ea5t c\u1ea3 c\u00e1c m\u1ee9c s\u1ef1 c\u1ed1<\/li>\n<li><strong>C\u00e2n nh\u1eafc S-series ho\u1eb7c ZSI<\/strong>: M\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p \u201cch\u1ecdn l\u1ecdc\u201d ho\u1eb7c kh\u00f3a li\u00ean \u0111\u1ed9ng ch\u1ecdn v\u00f9ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ph\u1ed1i h\u1ee3p<\/li>\n<\/ul>\n<h3>V\u00ed d\u1ee5 v\u1ec1 b\u1ea3o v\u1ec7 th\u1ee9 c\u1ea5p m\u00e1y bi\u1ebfn \u00e1p<\/h3>\n<p>\u0110\u1ed1i v\u1edbi m\u00e1y bi\u1ebfn \u00e1p 1000kVA \/ 400V (In \u2248 1443A th\u1ee9 c\u1ea5p):<\/p>\n<ol>\n<li><strong>T\u00ednh to\u00e1n m\u1ee9c s\u1ef1 c\u1ed1<\/strong>: N\u1ebfu tr\u1edf kh\u00e1ng m\u00e1y bi\u1ebfn \u00e1p Zk = 6%, s\u1ef1 c\u1ed1 th\u1ee9 c\u1ea5p \u2248 24 x In = 34.6kA<\/li>\n<li><strong>Ch\u1ecdn \u0111\u1ecbnh m\u1ee9c b\u1ed9 ng\u1eaft m\u1ea1ch<\/strong>: Ch\u1ecdn MCCB 630A l\u00e0m b\u1ed9 ng\u1eaft m\u1ea1ch ch\u00ednh (cho ph\u00e9p t\u0103ng tr\u01b0\u1edfng t\u1ea3i trong t\u01b0\u01a1ng lai l\u00ean ~440kW)<\/li>\n<li><strong>Ch\u1ec9 \u0111\u1ecbnh kh\u1ea3 n\u0103ng c\u1eaft<\/strong>: Icu \u2265 35kA; ch\u1ecdn khung 50kA ho\u1eb7c 65kA \u0111\u1ec3 c\u00f3 bi\u00ean \u0111\u1ed9 an to\u00e0n<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t chuy\u1ebfn<\/strong>: Ir = 0.8 x 630A = 504A (cho ph\u00e9p b\u1ed9 c\u1ea5p ngu\u1ed3n 1443A m\u00e0 kh\u00f4ng b\u1ecb chuy\u1ebfn qu\u00e1 t\u1ea3i)<\/li>\n<li><strong>Ph\u1ed1i h\u1ee3p<\/strong>: \u0110\u1eb7t Isd = 3000A v\u1edbi \u0111\u1ed9 tr\u1ec5 0.2s \u0111\u1ec3 ch\u1ecdn l\u1ecdc v\u1edbi c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch 250A \u1edf h\u1ea1 ngu\u1ed3n<\/li>\n<\/ol>\n<h3>Khi n\u00e0o n\u00ean ch\u1ecdn khung trung b\u00ecnh<\/h3>\n<ul>\n<li><strong>D\u00f2ng t\u1ea3i<\/strong> 250-630A<\/li>\n<li><strong>M\u1ee9c s\u1ef1 c\u1ed1<\/strong> 30-85kA<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng<\/strong> li\u00ean quan \u0111\u1ebfn b\u1ea3ng ph\u00e2n ph\u1ed1i ch\u00ednh, l\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 t\u00f2a nh\u00e0 ho\u1eb7c b\u1ed9 c\u1ea5p ngu\u1ed3n c\u00f4ng nghi\u1ec7p<\/li>\n<li><strong>T\u00ednh ch\u1ecdn l\u1ecdc<\/strong> c\u1ea7n ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch \u1edf h\u1ea1 ngu\u1ed3n<\/li>\n<li><strong>Giao ti\u1ebfp<\/strong> c\u1ea7n t\u00edch h\u1ee3p v\u1edbi BMS\/SCADA<\/li>\n<\/ul>\n<h2>MCCB khung l\u1edbn (630A \u2013 1600A)<\/h2>\n<p>MCCB khung l\u1edbn b\u1ea3o v\u1ec7 c\u00e1c b\u1ed9 c\u1ea5p ngu\u1ed3n ch\u00ednh, c\u00e1c ph\u1ea7n thanh c\u00e1i c\u1ee7a thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft v\u00e0 t\u1ea3i c\u00f4ng nghi\u1ec7p n\u1eb7ng. C\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ch\u00ednh gi\u1eefa ngu\u1ed3n cung c\u1ea5p \u0111i\u1ec7n (ho\u1eb7c ph\u00e1t \u0111i\u1ec7n t\u1ea1i ch\u1ed7) v\u00e0 h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i c\u1ee7a c\u01a1 s\u1edf. \u1ede quy m\u00f4 n\u00e0y, m\u1ed9t s\u1ef1 c\u1ed1 b\u1ed9 ng\u1eaft m\u1ea1ch duy nh\u1ea5t c\u00f3 th\u1ec3 t\u1eaft to\u00e0n b\u1ed9 t\u00f2a nh\u00e0 ho\u1eb7c d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t\u2014\u0111\u1ed9 tin c\u1eady v\u00e0 ph\u1ed1i h\u1ee3p l\u00e0 kh\u00f4ng th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng.<\/p>\n<h3>\u0110\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n ti\u00eau chu\u1ea9n<\/h3>\n<table>\n<tbody>\n<tr>\n<td><strong>\u0110\u1ecbnh m\u1ee9c (A)<\/strong><\/td>\n<td><strong>\u0110i\u1ec3n H\u00ecnh \u1ee8ng D\u1ee5ng<\/strong><\/td>\n<td><strong>Ph\u1ea1m vi Icu \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>630A<\/strong><\/td>\n<td>B\u1ed9 c\u1ea5p ngu\u1ed3n ch\u00ednh c\u00f4ng nghi\u1ec7p nh\u1ecf, d\u1ecbch v\u1ee5 t\u00f2a nh\u00e0 l\u1edbn<\/td>\n<td>50kA \u2013 100kA<\/td>\n<\/tr>\n<tr>\n<td><strong>800A<\/strong><\/td>\n<td>Ngu\u1ed3n \u0111i\u1ec7n ch\u00ednh c\u00f4ng nghi\u1ec7p v\u1eeba, ph\u00e2n ph\u1ed1i khu\u00f4n vi\u00ean nhi\u1ec1u t\u00f2a nh\u00e0<\/td>\n<td>65kA \u2013 100kA<\/td>\n<\/tr>\n<tr>\n<td><strong>1000A<\/strong><\/td>\n<td>B\u1ea3ng chuy\u1ec3n m\u1ea1ch ch\u00ednh c\u00f4ng nghi\u1ec7p, b\u1ed9 c\u1ea5p ngu\u1ed3n UPS trung t\u00e2m d\u1eef li\u1ec7u<\/td>\n<td>65kA \u2013 100kA<\/td>\n<\/tr>\n<tr>\n<td><strong>1250A<\/strong><\/td>\n<td>Ngu\u1ed3n \u0111i\u1ec7n ch\u00ednh c\u00f4ng nghi\u1ec7p n\u1eb7ng, khu ph\u1ee9c h\u1ee3p th\u01b0\u01a1ng m\u1ea1i l\u1edbn<\/td>\n<td>85kA \u2013 100kA<\/td>\n<\/tr>\n<tr>\n<td><strong>1600A<\/strong><\/td>\n<td>\u0110\u1ecbnh m\u1ee9c MCCB t\u1ed1i \u0111a; thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft ch\u00ednh, b\u1ed9 c\u1ea5p ngu\u1ed3n ch\u00ednh<\/td>\n<td>85kA \u2013 150kA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u0110\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt<\/h3>\n<p><strong>Kh\u1ea3 N\u0103ng Ph\u00e1 V\u1ee1<\/strong>: Khung l\u1edbn cung c\u1ea5p x\u1ebfp h\u1ea1ng Icu cao nh\u1ea5t c\u00f3 s\u1eb5n trong c\u00f4ng ngh\u1ec7 MCCB\u201465-150kA. Tr\u00ean m\u1ee9c n\u00e0y, b\u1ea1n th\u01b0\u1eddng chuy\u1ec3n sang <a href=\"https:\/\/test.viox.com\/vi\/complete-guide-to-air-circuit-breakers-acb\/\">M\u00e1y B\u1ed9 Ng\u1eaft M\u1ea1ch (ACBs)<\/a> v\u1edbi c\u1ea5u tr\u00fac k\u00e9o ra.<\/p>\n<p><strong>B\u1ed9 chuy\u1ebfn \u0111i\u1ec7n t\u1eed ti\u00ean ti\u1ebfn<\/strong>: MCCB khung l\u1edbn c\u00f3 c\u00e1c b\u1ed9 chuy\u1ebfn \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng vi x\u1eed l\u00fd tinh vi v\u1edbi:<\/p>\n<ul>\n<li><strong>\u0110\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh<\/strong>: \u0110\u01b0\u1eddng cong ANSI, \u0111\u01b0\u1eddng cong IEC ho\u1eb7c c\u00e0i \u0111\u1eb7t t\u00f9y ch\u1ec9nh<\/li>\n<li><strong>B\u1ea3o v\u1ec7 ch\u1ea1m \u0111\u1ea5t<\/strong>: \u0110\u1ed9 nh\u1ea1y v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1eddi gian c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh (30mA \u0111\u1ebfn 1200A)<\/li>\n<li><strong>B\u1ea3o v\u1ec7 trung t\u00ednh<\/strong>: C\u00e1c thi\u1ebft b\u1ecb 4 c\u1ef1c c\u00f3 gi\u00e1m s\u00e1t d\u00f2ng \u0111i\u1ec7n trung t\u00ednh<\/li>\n<li><strong>Ph\u00e1t hi\u1ec7n h\u1ed3 quang \u0111i\u1ec7n<\/strong>: M\u00f4-\u0111un AFCI t\u00f9y ch\u1ecdn \u0111\u1ec3 ph\u00f2ng ch\u1ed1ng ch\u00e1y n\u1ed5<\/li>\n<li><strong>\u0110o l\u01b0\u1eddng v\u00e0 ghi d\u1eef li\u1ec7u<\/strong>: D\u00f2ng \u0111i\u1ec7n, \u0111i\u1ec7n \u00e1p, c\u00f4ng su\u1ea5t, n\u0103ng l\u01b0\u1ee3ng, s\u00f3ng h\u00e0i theo th\u1eddi gian th\u1ef1c<\/li>\n<li><strong>Giao th\u1ee9c giao ti\u1ebfp<\/strong>: Modbus TCP\/IP, Profinet, BACnet \u0111\u1ec3 t\u00edch h\u1ee3p<\/li>\n<\/ul>\n<p><strong>K\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd<\/strong>: MCCB 4 c\u1ef1c 1600A c\u00f3 th\u1ec3 \u0111o 300mm (R) x 380mm (C) x 140mm (S). Tr\u1ecdng l\u01b0\u1ee3ng v\u01b0\u1ee3t qu\u00e1 15kg. Vi\u1ec7c l\u1eafp \u0111\u1eb7t y\u00eau c\u1ea7u g\u1eafn ch\u1eafc ch\u1eafn v\u00e0o thanh c\u00e1i ho\u1eb7c \u0111\u1ea7u c\u00e1p \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt m\u00f4-men xo\u1eafn ph\u00f9 h\u1ee3p (th\u01b0\u1eddng l\u00e0 m\u00f4-men xo\u1eafn \u0111\u1ea7u cu\u1ed1i 40-60 Nm).<\/p>\n<p><strong>Ki\u1ec3m tra v\u00e0 b\u1ea3o tr\u00ec<\/strong>: IEC 60947-2 y\u00eau c\u1ea7u MCCB khung l\u1edbn ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c tr\u00ecnh t\u1ef1 th\u1eed nghi\u1ec7m c\u1ee5 th\u1ec3. Sau c\u00e1c s\u1ef1 c\u1ed1 l\u1edbn (g\u1ea7n Icu), h\u00e3y ki\u1ec3m tra s\u1ef1 \u0103n m\u00f2n ti\u1ebfp \u0111i\u1ec3m, t\u00ecnh tr\u1ea1ng \u1ed1ng d\u1eadp h\u1ed3 quang v\u00e0 \u0111\u1ed9 m\u00f2n c\u1ee7a c\u01a1 c\u1ea5u. Nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m th\u1ef1c hi\u1ec7n ki\u1ec3m tra chuy\u1ebfn h\u00e0ng n\u0103m v\u00e0 ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac 3-5 n\u0103m.<\/p>\n<h3>V\u00ed d\u1ee5 v\u1ec1 b\u1ed9 c\u1ea5p ngu\u1ed3n ch\u00ednh c\u1ee7a thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft<\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p 2500kVA \/ 400V (t\u1ea3i \u01b0\u1edbc t\u00ednh 3608A, h\u1ec7 s\u1ed1 nhu c\u1ea7u 0.6 = 2165A):<\/p>\n<ol>\n<li><strong>T\u00ednh to\u00e1n m\u1ee9c s\u1ef1 c\u1ed1<\/strong>: \u0110\u00f3ng g\u00f3p s\u1ef1 c\u1ed1 ti\u1ec7n \u00edch = 80kA t\u1ea1i \u0111i\u1ec3m d\u1ecbch v\u1ee5<\/li>\n<li><strong>Ch\u1ecdn \u0111\u1ecbnh m\u1ee9c b\u1ed9 ng\u1eaft m\u1ea1ch<\/strong>: Ch\u1ecdn MCCB 1600A (k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n ti\u1ebfp theo tr\u00ean nhu c\u1ea7u 2165A, cho ph\u00e9p t\u0103ng tr\u01b0\u1edfng)<\/li>\n<li><strong>Ch\u1ec9 \u0111\u1ecbnh kh\u1ea3 n\u0103ng c\u1eaft<\/strong>: Icu \u2265 80kA; ch\u1ecdn khung 100kA \u0111\u1ec3 c\u00f3 bi\u00ean \u0111\u1ed9 an to\u00e0n<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t chuy\u1ebfn<\/strong>: Ir = 0.9 x 1600A = 1440A, Isd = 6400A \/ 0.4s, Ii = 15000A<\/li>\n<li><strong>Ph\u1ed1i h\u1ee3p<\/strong>: X\u00e1c minh t\u00ednh ch\u1ecdn l\u1ecdc v\u1edbi c\u00e1c nh\u00e1nh c\u1ea5p ngu\u1ed3n 630A h\u1ea1 ngu\u1ed3n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong th\u1eddi gian - d\u00f2ng \u0111i\u1ec7n<\/li>\n<li><strong>Giao ti\u1ebfp<\/strong>: K\u1ebft n\u1ed1i v\u1edbi SCADA \u0111\u1ec3 gi\u00e1m s\u00e1t t\u1ea3i v\u00e0 kh\u1ea3 n\u0103ng ng\u1eaft t\u1eeb xa<\/li>\n<\/ol>\n<h3>ACB so v\u1edbi MCCB khung l\u1edbn<\/h3>\n<p><strong>N\u00ean d\u00f9ng MCCB n\u1ebfu<\/strong>:<\/p>\n<ul>\n<li>D\u00f2ng \u0111i\u1ec7n \u2264 1600A<\/li>\n<li>M\u1ee9c s\u1ef1 c\u1ed1 \u2264 100kA (ho\u1eb7c 150kA v\u1edbi c\u00e1c model hi\u1ec7u su\u1ea5t cao)<\/li>\n<li>L\u1eafp \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh (kh\u00f4ng y\u00eau c\u1ea7u b\u1ea3o tr\u00ec d\u1ea1ng k\u00e9o ra)<\/li>\n<li>H\u1ea1n ch\u1ebf v\u1ec1 ng\u00e2n s\u00e1ch \u01b0u ti\u00ean MCCB nh\u1ecf g\u1ecdn h\u01a1n ACB<\/li>\n<\/ul>\n<p><strong>Chuy\u1ec3n sang ACB n\u1ebfu<\/strong>:<\/p>\n<ul>\n<li>D\u00f2ng \u0111i\u1ec7n &gt; 1600A (ACB m\u1edf r\u1ed9ng \u0111\u1ebfn 6300A+)<\/li>\n<li>C\u1ea7n c\u1ea5u tr\u00fac k\u00e9o ra \u0111\u1ec3 b\u1ea3o tr\u00ec m\u00e0 kh\u00f4ng c\u1ea7n th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng<\/li>\n<li>M\u1ee9c s\u1ef1 c\u1ed1 c\u1ef1c cao (&gt;100kA) y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 ng\u1eaft c\u1ee7a ACB<\/li>\n<li>\u1ee8ng d\u1ee5ng y\u00eau c\u1ea7u t\u00e1ch ti\u1ebfp \u0111i\u1ec3m c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y ho\u1eb7c c\u00e1c ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 m\u1edf r\u1ed9ng<\/li>\n<\/ul>\n<h3>Khi n\u00e0o n\u00ean ch\u1ecdn khung l\u1edbn<\/h3>\n<ul>\n<li><strong>D\u00f2ng t\u1ea3i<\/strong> 630-1600A<\/li>\n<li><strong>M\u1ee9c s\u1ef1 c\u1ed1<\/strong> 50-150kA<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng<\/strong> li\u00ean quan \u0111\u1ebfn ngu\u1ed3n c\u1ea5p ch\u00ednh, t\u1ee7 \u0111i\u1ec7n ho\u1eb7c c\u00e1c \u0111i\u1ec3m ph\u00e2n ph\u1ed1i quan tr\u1ecdng<\/li>\n<li><strong>B\u1ea3o v\u1ec7 n\u00e2ng cao<\/strong> (\u0111o \u0111\u1ebfm, giao ti\u1ebfp, ch\u1ea1m \u0111\u1ea5t) l\u00e0 b\u1eaft bu\u1ed9c<\/li>\n<li><strong>Ng\u00e2n s\u00e1ch v\u00e0 kh\u00f4ng gian<\/strong> \u01b0u ti\u00ean c\u00f4ng ngh\u1ec7 MCCB h\u01a1n ACB<\/li>\n<\/ul>\n<h2>C\u00e1ch \u0111\u1ecdc b\u1ea3ng th\u00f4ng s\u1ed1 MCCB<\/h2>\n<p>M\u1ed7i MCCB tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n IEC \u0111\u1ec1u c\u00f3 m\u1ed9t b\u1ea3ng th\u00f4ng s\u1ed1 (b\u1ea3ng t\u00ean) hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt quan tr\u1ecdng. Hi\u1ec3u c\u00e1ch gi\u1ea3i m\u00e3 th\u00f4ng tin n\u00e0y \u0111\u1ea3m b\u1ea3o b\u1ea1n ch\u1ecdn, l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec b\u1ed9 ng\u1eaft m\u1ea1ch m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n<h3>Th\u00f4ng tin b\u1ea3ng t\u00ean thi\u1ebft y\u1ebfu<\/h3>\n<p>M\u1ed9t b\u1ea3ng th\u00f4ng s\u1ed1 MCCB \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>1. Nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 Model<\/strong>: T\u00ean th\u01b0\u01a1ng hi\u1ec7u v\u00e0 d\u00f2ng s\u1ea3n ph\u1ea9m (v\u00ed d\u1ee5: \u201cVIOX VMC3-630\u201d)<\/li>\n<li><strong>2. K\u00fd hi\u1ec7u ti\u00eau chu\u1ea9n IEC<\/strong>: \u201cIEC 60947-2\u201d ho\u1eb7c \u201cEN 60947-2\u201d x\u00e1c nh\u1eadn s\u1ef1 tu\u00e2n th\u1ee7<\/li>\n<li><strong>3. D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c (In)<\/strong>: D\u00f2ng \u0111i\u1ec7n danh \u0111\u1ecbnh c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng tham chi\u1ebfu (40\u00b0C)<\/li>\n<li><strong>4. \u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c (Ue)<\/strong>: \u0110i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng \u0111\u1ecbnh m\u1ee9c (v\u00ed d\u1ee5: 690V AC, 250V DC)<\/li>\n<li><strong>5. Kh\u1ea3 n\u0103ng c\u1eaft (Icu \/ Ics)<\/strong>: Gi\u1edbi h\u1ea1n Icu (t\u1ed1i \u0111a) v\u00e0 Ics (d\u1ecbch v\u1ee5) t\u00ednh b\u1eb1ng kA<\/li>\n<li><strong>6. H\u1ea1ng s\u1eed d\u1ee5ng<\/strong>: H\u1ea1ng A (t\u1ee9c th\u1eddi) ho\u1eb7c H\u1ea1ng B (tr\u1ec5 th\u1eddi gian)<\/li>\n<li><strong>7. \u0110i\u1ec7n \u00e1p c\u00e1ch \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c (Ui)<\/strong>: \u0110i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng h\u1ec7 th\u1ed1ng t\u1ed1i \u0111a<\/li>\n<li><strong>8. \u0110i\u1ec7n \u00e1p ch\u1ecbu xung \u0111\u1ecbnh m\u1ee9c (Uimp)<\/strong>: Kh\u1ea3 n\u0103ng mi\u1ec5n nhi\u1ec5m xung (v\u00ed d\u1ee5: 8kV)<\/li>\n<li><strong>9. S\u1ed1 c\u1ef1c v\u00e0 c\u1ea5u h\u00ecnh<\/strong>: 3P ho\u1eb7c 4P<\/li>\n<li><strong>10. C\u00e0i \u0111\u1eb7t Trip<\/strong>: Ph\u1ea1m vi cho Ir, Isd, Ii (n\u1ebfu c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh)<\/li>\n<li><strong>11. Ch\u1ee9ng nh\u1eadn<\/strong>: D\u1ea5u CE, CCC, UL<\/li>\n<\/ul>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/mccb-rating-plate-example-showing-all-specifications.webp\" alt=\"MCCB Rating Plate Example showing all specifications\" \/><figcaption>H\u00ecnh 3: B\u1ea3ng th\u00f4ng s\u1ed1 MCCB chi ti\u1ebft hi\u1ec3n th\u1ecb c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thi\u1ebft y\u1ebfu: In (d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c), Ue (\u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng), Icu\/Ics (kh\u1ea3 n\u0103ng c\u1eaft), tu\u00e2n th\u1ee7 IEC 60947-2, c\u00e0i \u0111\u1eb7t trip v\u00e0 d\u1ea5u ch\u1ee9ng nh\u1eadn. Lu\u00f4n x\u00e1c minh c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y kh\u1edbp v\u1edbi c\u00e1c y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t.<\/figcaption><\/figure>\n<h3>Nh\u1eefng g\u00ec c\u1ea7n x\u00e1c minh tr\u01b0\u1edbc khi c\u00e0i \u0111\u1eb7t<\/h3>\n<ol>\n<li><strong>In \u2265 d\u00f2ng \u0111i\u1ec7n t\u1ea3i \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n<\/strong> (v\u1edbi vi\u1ec7c gi\u1ea3m \u0111\u1ecbnh m\u1ee9c cho nhi\u1ec7t \u0111\u1ed9\/nh\u00f3m n\u1ebfu c\u00f3)<\/li>\n<li><strong>Ue = \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng<\/strong> (ph\u1ea3i kh\u1edbp; b\u1ed9 ng\u1eaft m\u1ea1ch 400V kh\u00f4ng th\u1ec3 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng 690V)<\/li>\n<li><strong>Icu \u2265 d\u00f2ng ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn<\/strong> t\u1ea1i \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t<\/li>\n<li><strong>Ics ph\u00f9 h\u1ee3p<\/strong> cho \u1ee9ng d\u1ee5ng (75-100% cho c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng nh\u1ea5t)<\/li>\n<li><strong>S\u1ed1 c\u1ef1c ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng<\/strong>: 3P cho ba pha, 4P n\u1ebfu c\u1ea7n b\u1ea3o v\u1ec7 trung t\u00ednh<\/li>\n<li><strong>C\u00e0i \u0111\u1eb7t chuy\u1ebfn<\/strong> (n\u1ebfu c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh) \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh theo nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p<\/li>\n<li><strong>Ch\u1ee9ng nh\u1eadn<\/strong> h\u1ee3p l\u1ec7 cho khu v\u1ef1c c\u00e0i \u0111\u1eb7t<\/li>\n<\/ol>\n<h2>H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn theo \u1ee9ng d\u1ee5ng<\/h2>\n<p>Vi\u1ec7c ch\u1ecdn d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c MCCB ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, lo\u1ea1i t\u1ea3i, m\u1ee9c s\u1ef1 c\u1ed1 v\u00e0 y\u00eau c\u1ea7u ph\u1ed1i h\u1ee3p c\u1ee7a b\u1ea1n.<\/p>\n<h3>B\u1ea3ng ch\u1ecdn nhanh<\/h3>\n<table>\n<tbody>\n<tr>\n<td><strong>\u1ee8ng d\u1ee5ng<\/strong><\/td>\n<td><strong>D\u00f2ng t\u1ea3i<\/strong><\/td>\n<td><strong>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c MCCB \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb<\/strong><\/td>\n<td><strong>Icu \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9ng c\u01a1 nh\u1ecf (7,5kW)<\/td>\n<td>15A<\/td>\n<td><strong>20A ho\u1eb7c 25A<\/strong><\/td>\n<td>25-36kA<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9ng c\u01a1 c\u1ee1 v\u1eeba (30kW)<\/td>\n<td>57A<\/td>\n<td><strong>63A ho\u1eb7c 80A<\/strong><\/td>\n<td>36-50kA<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9ng c\u01a1 l\u1edbn (110kW)<\/td>\n<td>200A<\/td>\n<td><strong>250A<\/strong><\/td>\n<td>50-65kA<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n c\u1ea5p t\u1ea7ng v\u0103n ph\u00f2ng<\/td>\n<td>180A<\/td>\n<td><strong>200A ho\u1eb7c 250A<\/strong><\/td>\n<td>36-50kA<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n c\u1ea5p ch\u00ednh th\u1ee9 c\u1ea5p t\u00f2a nh\u00e0<\/td>\n<td>450A<\/td>\n<td><strong>500A ho\u1eb7c 630A<\/strong><\/td>\n<td>50-65kA<\/td>\n<\/tr>\n<tr>\n<td>L\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 nh\u1ecf<\/td>\n<td>650A<\/td>\n<td><strong>800A<\/strong><\/td>\n<td>65-85kA<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n c\u1ea5p ch\u00ednh c\u00f4ng nghi\u1ec7p<\/td>\n<td>1200A<\/td>\n<td><strong>1250A ho\u1eb7c 1600A<\/strong><\/td>\n<td>85-100kA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Nh\u1eafc nh\u1edf l\u1ef1a ch\u1ecdn quan tr\u1ecdng<\/h3>\n<ol>\n<li><strong>Kh\u00f4ng bao gi\u1edd ch\u1ecdn In nh\u1ecf h\u01a1n y\u00eau c\u1ea7u<\/strong>: M\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch mang 90-100% \u0111\u1ecbnh m\u1ee9c c\u1ee7a n\u00f3 li\u00ean t\u1ee5c s\u1ebd qu\u00e1 n\u00f3ng v\u00e0 gi\u1ea3m tu\u1ed5i th\u1ecd<\/li>\n<li><strong>Lu\u00f4n x\u00e1c minh Icu<\/strong>: Kh\u1ea3 n\u0103ng c\u1eaft m\u1ea1ch b\u1ecb \u0111\u00e1nh gi\u00e1 th\u1ea5p c\u00f3 th\u1ec3 g\u00e2y ra h\u1ecfng h\u00f3c nghi\u00eam tr\u1ecdng cho b\u1ed9 ng\u1eaft m\u1ea1ch trong qu\u00e1 tr\u00ecnh x\u1ea3y ra s\u1ef1 c\u1ed1<\/li>\n<li><strong>Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng<\/strong>: \u0110\u1ecbnh m\u1ee9c ti\u00eau chu\u1ea9n gi\u1ea3 \u0111\u1ecbnh 40\u00b0C; gi\u1ea3m \u0111\u1ecbnh m\u1ee9c cho nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n (0,9x \u1edf 50\u00b0C, 0,8x \u1edf 60\u00b0C)<\/li>\n<li><strong>Ph\u1ed1i h\u1ee3p c\u00e1c \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n<\/strong>: S\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 x\u00e1c minh t\u00ednh ch\u1ecdn l\u1ecdc tr\u00ean to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i<\/li>\n<li><strong>Xem x\u00e9t s\u1ef1 ph\u00e1t tri\u1ec3n trong t\u01b0\u01a1ng lai<\/strong>: Ch\u1ec9 \u0111\u1ecbnh bi\u00ean \u0111\u1ed9 10-25% trong In cho vi\u1ec7c m\u1edf r\u1ed9ng c\u01a1 s\u1edf<\/li>\n<\/ol>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/mccb-selection-decision-flowchart.webp\" alt=\"MCCB Selection Decision Flowchart\" \/><figcaption>H\u00ecnh 5: L\u01b0u \u0111\u1ed3 l\u1ef1a ch\u1ecdn MCCB h\u01b0\u1edbng d\u1eabn x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc khung d\u1ef1a tr\u00ean d\u00f2ng \u0111i\u1ec7n t\u1ea3i, sau \u0111\u00f3 l\u00e0 x\u00e1c minh kh\u1ea3 n\u0103ng c\u1eaft m\u1ea1ch, ki\u1ec3m tra \u0111\u1ecbnh m\u1ee9c d\u1ecbch v\u1ee5 v\u00e0 ph\u00e2n t\u00edch ph\u1ed1i h\u1ee3p. S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn c\u00f3 h\u1ec7 th\u1ed1ng n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt b\u1ed9 ng\u1eaft m\u1ea1ch ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n.<\/figcaption><\/figure>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>\u0110\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n MCCB ti\u00eau chu\u1ea9n t\u1eeb 16A \u0111\u1ebfn 1600A t\u1ea1o th\u00e0nh n\u1ec1n t\u1ea3ng c\u1ee7a h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i \u0111i\u1ec7n hi\u1ec7n \u0111\u1ea1i. Hi\u1ec3u m\u1ed1i quan h\u1ec7 gi\u1eefa k\u00edch th\u01b0\u1edbc khung, \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n v\u00e0 kh\u1ea3 n\u0103ng c\u1eaft m\u1ea1ch cho ph\u00e9p b\u1ea1n ch\u1ec9 \u0111\u1ecbnh c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb, \u0111\u1ea3m b\u1ea3o ph\u1ed1i h\u1ee3p h\u1ec7 th\u1ed1ng v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n an to\u00e0n IEC 60947-2.<\/p>\n<p>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh:<\/p>\n<ul>\n<li><strong>Gh\u00e9p In v\u1edbi y\u00eau c\u1ea7u t\u1ea3i<\/strong> v\u1edbi bi\u00ean \u0111\u1ed9 10-25% cho s\u1ef1 ph\u00e1t tri\u1ec3n v\u00e0 gi\u1ea3m \u0111\u1ecbnh m\u1ee9c<\/li>\n<li><strong>X\u00e1c minh Icu so v\u1edbi c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 s\u1ef1 c\u1ed1<\/strong>\u2014kh\u00f4ng bao gi\u1edd l\u1eafp \u0111\u1eb7t b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 kh\u1ea3 n\u0103ng c\u1eaft m\u1ea1ch kh\u00f4ng \u0111\u1ee7<\/li>\n<li><strong>Ch\u1ecdn k\u00edch th\u01b0\u1edbc khung m\u1ed9t c\u00e1ch kh\u00f4n ngoan<\/strong>\u2014khung nh\u1ecf cho \u226450kA \/ \u2264250A, trung b\u00ecnh cho 30-85kA \/ 250-630A, l\u1edbn cho 50-150kA \/ 630-1600A<\/li>\n<li><strong>\u0110\u1ecdc k\u1ef9 b\u1ea3ng \u0111\u1ecbnh m\u1ee9c<\/strong>\u2014x\u00e1c nh\u1eadn In, Ue, Icu, Ics, s\u1ed1 c\u1ef1c v\u00e0 ch\u1ee9ng nh\u1eadn tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t<\/li>\n<li><strong>Ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c nghi\u00ean c\u1ee9u h\u1ec7 th\u1ed1ng<\/strong>\u2014s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u1ecdn l\u1ecdc tr\u00ean to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng ph\u00e2n ph\u1ed1i<\/li>\n<\/ul>\n<p>Cho d\u00f9 b\u1ea1n \u0111ang b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1 30kW b\u1eb1ng b\u1ed9 ng\u1eaft m\u1ea1ch 63A hay ch\u1ec9 \u0111\u1ecbnh ngu\u1ed3n c\u1ea5p ch\u00ednh 1600A cho m\u1ed9t c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p, c\u00e1c nguy\u00ean t\u1eafc v\u1eabn gi\u1ed1ng nhau: t\u00ednh to\u00e1n t\u1ea3i ch\u00ednh x\u00e1c, kh\u1ea3 n\u0103ng c\u1eaft m\u1ea1ch ph\u00f9 h\u1ee3p v\u00e0 ph\u1ed1i h\u1ee3p \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh.<\/p>\n<hr \/>\n<p><strong>C\u1ea7n h\u1ed7 tr\u1ee3 ch\u1ecdn MCCB ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n?<\/strong> VIOX Electric s\u1ea3n xu\u1ea5t MCCB tu\u00e2n th\u1ee7 IEC 60947-2 tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ecbnh m\u1ee9c ti\u00eau chu\u1ea9n t\u1eeb 16A \u0111\u1ebfn 1600A. \u0110\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i cung c\u1ea5p h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt cho vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1ed9 ng\u1eaft m\u1ea1ch, nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. <a href=\"#\">Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i \u0111\u1ec3 bi\u1ebft th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 t\u01b0 v\u1ea5n k\u1ef9 thu\u1eadt.<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Selecting the right molded case circuit breaker (MCCB) starts with understanding standard breaker sizes. Unlike miniature circuit breakers (MCBs) that protect final circuits, MCCBs cover a much wider current range\u2014from 16A branch feeders to 1600A main incomers\u2014and choosing the correct rating directly impacts system safety, coordination, and project costs. This guide maps the complete IEC [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":20574,"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-20573","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\/20573","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=20573"}],"version-history":[{"count":4,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20573\/revisions"}],"predecessor-version":[{"id":20578,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20573\/revisions\/20578"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/20574"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=20573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=20573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=20573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}