{"id":1213,"date":"2026-07-20T16:49:49","date_gmt":"2026-07-20T16:49:49","guid":{"rendered":"https:\/\/benlongkj.com\/?p=1213"},"modified":"2026-07-20T16:49:55","modified_gmt":"2026-07-20T16:49:55","slug":"mccb-testing-equipment-a-technical-guide-for-laboratories","status":"publish","type":"post","link":"https:\/\/benlongkj.com\/vi\/blog\/mccb-testing-equipment-a-technical-guide-for-laboratories\/","title":{"rendered":"Thi\u1ebft b\u1ecb ki\u1ec3m tra MCCB: H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt cho c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m"},"content":{"rendered":"<p>V\u00e0o n\u0103m 2024, m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t c\u1ea7u dao \u0111i\u1ec7n ki\u1ec3u kh\u1ed1i \u1edf \u0110\u00f4ng Nam \u00c1 \u0111\u00e3 g\u1eedi m\u1ed9t lo\u1ea1t c\u1ea7u dao \u0111i\u1ec7n ki\u1ec3u kh\u1ed1i 250 A \u0111\u1ebfn m\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m tra \u0111\u1ed9c l\u1eadp \u0111\u1ec3 th\u1ef1c hi\u1ec7n b\u00e0i ki\u1ec3m tra lo\u1ea1i IEC 60947-2. C\u00e1c b\u00e0i ki\u1ec3m tra \u0111\u00e3 kh\u00f4ng v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra t\u0103ng nhi\u1ec7t \u0111\u1ed9 \u1edf d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c. \u0110\u1ed9i ng\u0169 k\u1ef9 s\u01b0 c\u1ea3m th\u1ea5y b\u1ed1i r\u1ed1i v\u00ec nh\u1eefng c\u1ea7u dao \u0111i\u1ec7n c\u00f9ng lo\u1ea1i tr\u01b0\u1edbc \u0111\u00f3 \u0111\u00e3 v\u01b0\u1ee3t qua b\u00e0i ki\u1ec3m tra t\u01b0\u01a1ng t\u1ef1 trong ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ee7a h\u1ecd ch\u1ec9 hai th\u00e1ng tr\u01b0\u1edbc \u0111\u00f3. Sau khi \u0111i\u1ec1u tra, h\u1ecd ph\u00e1t hi\u1ec7n ra r\u1eb1ng v\u1ea5n \u0111\u1ec1 kh\u00f4ng ph\u1ea3i \u1edf nh\u1eefng c\u1ea7u dao \u0111i\u1ec7n m\u00e0 l\u00e0 \u1edf h\u1ec7 th\u1ed1ng ki\u1ec3m tra trong c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t. Ngu\u1ed3n AC c\u1ee7a nh\u00e0 m\u00e1y kh\u00f4ng th\u1ec3 duy tr\u00ec \u0111\u1ea7u ra \u1ed5n \u0111\u1ecbnh 250 A trong to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh c\u00e2n b\u1eb1ng nhi\u1ec7t, v\u1ecb tr\u00ed c\u1ee7a c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u00fang theo ti\u00eau chu\u1ea9n \u0111o l\u01b0\u1eddng \u0111\u1ea7u cu\u1ed1i, v\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng \u0111\u00e3 thay \u0111\u1ed5i 4 \u0111\u1ed9 Celsius trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra. H\u00f3a ra s\u1ea3n ph\u1ea9m l\u00e0 \u1ed5n v\u00e0 \u0111i\u1ec1u duy nh\u1ea5t kh\u00f4ng \u1ed5n l\u00e0 thi\u1ebft b\u1ecb ki\u1ec3m tra ch\u1ecbu tr\u00e1ch nhi\u1ec7m x\u00e1c minh n\u00f3. Qu\u00e1 tr\u00ecnh t\u00e1i ch\u1ee9ng nh\u1eadn m\u1ea5t b\u1ed1n th\u00e1ng v\u00e0 t\u1ed1n m\u1ed9t kho\u1ea3n ti\u1ec1n s\u00e1u ch\u1eef s\u1ed1 cho c\u00e1c kho\u1ea3n ph\u00ed thu\u00ea tr\u1ea1m li\u00ean ti\u1ebfp.<\/p>\n<p>S\u1ef1 th\u1eadt kh\u00f4ng may v\u1ec1 <strong>ki\u1ec3m tra MCCB<\/strong> thi\u1ebft b\u1ecb l\u00e0 n\u00f3 cung c\u1ea5p th\u00f4ng tin \u0111\u1ed9 tin c\u1eady ch\u1ec9 d\u1ef1a tr\u00ean t\u1ed5 ch\u1ee9c \u0111\u00e3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u00e1ng lo ng\u1ea1i \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 l\u00e0m vi\u1ec7c t\u1ea1i c\u01a1 s\u1edf ho\u1eb7c \u0111\u1ed1i v\u1edbi nh\u00e2n vi\u00ean mua s\u1eafm v\u00ec c\u01a1 s\u1edf ki\u1ec3m tra \u0111\u01b0\u1ee3c coi l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u00e1ng tin c\u1eady nh\u1ea5t trong to\u00e0n b\u1ed9 quy tr\u00ecnh ch\u1ee9ng nh\u1eadn. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd cung c\u1ea5p chi ti\u1ebft v\u1ec1 quy tr\u00ecnh ki\u1ec3m tra theo IEC 60947-2, c\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n ki\u1ec3m tra, v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt li\u00ean quan c\u1ee7a b\u00e0n ki\u1ec3m tra c\u00f3 kh\u1ea3 n\u0103ng cung c\u1ea5p d\u1eef li\u1ec7u c\u00f3 th\u1ec3 ch\u1ee9ng nh\u1eadn.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/07\/MCCB-comprehensive-test-bench-parameters.webp\" alt=\"Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt b\u00e0n th\u1eed nghi\u1ec7m to\u00e0n di\u1ec7n MCCB cho th\u1eed nghi\u1ec7m hi\u1ec7u chu\u1ea9n t\u1eeb t\u00ednh v\u00e0 nhi\u1ec7t trong ph\u00f2ng th\u00ed nghi\u1ec7m\" \/><\/p>\n<h2>Nh\u1eefng g\u00ec IEC 60947-2 y\u00eau c\u1ea7u: Ch\u1ebf \u0111\u1ed9 ki\u1ec3m tra MCCB ho\u00e0n ch\u1ec9nh<\/h2>\n<p>B\u1ea5t k\u1ef3 c\u1ea7u dao \u0111i\u1ec7n ki\u1ec3u kh\u1ed1i n\u00e0o \u0111\u01b0\u1ee3c b\u00e1n v\u00e0o th\u1ecb tr\u01b0\u1eddng c\u00f3 quy \u0111\u1ecbnh ph\u1ea3i tu\u00e2n th\u1ee7 m\u1ed9t ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u01b0\u1ee3c x\u00e1c minh. Ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m li\u00ean quan th\u01b0\u1eddng l\u00e0 IEC 60947-2 \u1edf ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a th\u1ebf gi\u1edbi v\u00e0 UL 489 \u1edf B\u1eafc M\u1ef9. C\u00e1c ti\u00eau chu\u1ea9n m\u00f4 t\u1ea3 kh\u00f4ng ch\u1ec9 c\u00e1c b\u00e0i ki\u1ec3m tra lo\u1ea1i, \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean m\u1ed9t m\u1eabu \u0111\u1ea1i di\u1ec7n ch\u1ec9 m\u1ed9t l\u1ea7n \u0111\u1ec3 x\u00e1c minh thi\u1ebft k\u1ebf, m\u00e0 c\u00f2n c\u00e1c b\u00e0i ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3, \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb ho\u1eb7c m\u1ed9t m\u1eabu th\u1ed1ng k\u00ea trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. M\u1ed7i lo\u1ea1i b\u00e0i ki\u1ec3m tra y\u00eau c\u1ea7u c\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb ph\u00f2ng th\u00ed nghi\u1ec7m nh\u1ea5t \u0111\u1ecbnh v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt k\u1ef9 thu\u1eadt c\u1ee5 th\u1ec3. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u1ed5ng h\u1ee3p c\u00e1c lo\u1ea1i b\u00e0i ki\u1ec3m tra ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c minh m\u1ed9t MCCB nhi\u1ec7t t\u1eeb t\u00ednh, t\u1eeb \u0111\u00f3 t\u1ea1o th\u00e0nh m\u1ed9t danh s\u00e1ch ki\u1ec3m tra cho c\u00e1c ng\u01b0\u1eddi mua MCCB trong t\u01b0\u01a1ng lai.<\/p>\n<table>\n<thead>\n<tr>\n<th>X\u00e1c minh<\/th>\n<th>\u0110i\u1ec1u n\u00f3 ch\u1ee9ng minh<\/th>\n<th>Thi\u1ebft b\u1ecb ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ea7n thi\u1ebft<\/th>\n<th>C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1eb7c t\u00ednh ng\u1eaft \u2014 nhi\u1ec7t (qu\u00e1 t\u1ea3i)<\/td>\n<td>Bimetal gi\u1ea3i ph\u00f3ng trong d\u1ea3i th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean b\u1ea3ng d\u1eef li\u1ec7u, th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c minh \u1edf d\u00f2ng \u0111i\u1ec7n kh\u00f4ng ng\u1eaft th\u00f4ng th\u01b0\u1eddng (1.05\u00d7Ir) v\u00e0 d\u00f2ng \u0111i\u1ec7n ng\u1eaft th\u00f4ng th\u01b0\u1eddng (1.30\u00d7Ir)<\/td>\n<td><strong>B\u00e0n hi\u1ec7u chu\u1ea9n ng\u1eaft nhi\u1ec7t<\/strong> v\u1edbi ngu\u1ed3n d\u00f2ng AC ch\u00ednh x\u00e1c, \u0111o th\u1eddi gian theo t\u1eebng c\u1ef1c, v\u00e0 tham chi\u1ebfu m\u00f4i tr\u01b0\u1eddng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t<\/td>\n<td>\u0110\u1ed9 ch\u00ednh x\u00e1c d\u00f2ng \u0111i\u1ec7n l\u1edbp 0.5 ho\u1eb7c t\u1ed1t h\u01a1n; \u0111\u1ea7u ra \u1ed5n \u0111\u1ecbnh trong th\u1eddi gian th\u1eed nghi\u1ec7m l\u00ean \u0111\u1ebfn 2 gi\u1edd; \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1eddi gian 10 ms ho\u1eb7c t\u1ed1t h\u01a1n; tham chi\u1ebfu m\u00f4i tr\u01b0\u1eddng gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 hi\u1ec7u chu\u1ea9n \u0111\u00e3 c\u00f4ng b\u1ed1<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1eb7c t\u00ednh ng\u1eaft \u2014 t\u1eeb t\u00ednh (ngay l\u1eadp t\u1ee9c)<\/td>\n<td>Thi\u1ebft b\u1ecb ng\u1eaft \u0111i\u1ec7n t\u1eeb ho\u1ea1t \u0111\u1ed9ng trong gi\u1edbi h\u1ea1n dung sai \u0111\u00e3 c\u00f4ng b\u1ed1 c\u1ee7a c\u00e0i \u0111\u1eb7t t\u1ee9c th\u1eddi Im (th\u01b0\u1eddng l\u00e0 \u00b120%)<\/td>\n<td><strong>B\u00e0n th\u1eed nghi\u1ec7m ng\u1eaft t\u1eeb t\u00ednh<\/strong> v\u1edbi vi\u1ec7c ti\u00eam xung d\u00f2ng \u0111i\u1ec7n cao v\u00e0 ghi l\u1ea1i th\u1eddi gian ng\u1eaft<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n xung l\u00ean \u0111\u1ebfn 5\u201310\u00d7In v\u00e0 h\u01a1n th\u1ebf n\u1eefa; t\u0103ng d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t; ph\u00e2n bi\u1ec7t n\u1eeda chu k\u1ef3 \u0111\u1ec3 tr\u00e1nh l\u00e0m n\u00f3ng tr\u01b0\u1edbc nhi\u1ec7t c\u1ee7a bimetal<\/td>\n<\/tr>\n<tr>\n<td>X\u00e1c minh t\u0103ng nhi\u1ec7t \u0111\u1ed9<\/td>\n<td>T\u0103ng nhi\u1ec7t \u0111\u1ed9 \u1edf \u0111\u1ea7u n\u1ed1i v\u00e0 b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn gi\u1eef trong gi\u1edbi h\u1ea1n ti\u00eau chu\u1ea9n t\u1ea1i d\u00f2ng \u0111i\u1ec7n kh\u00f4ng b\u1ecb ng\u1eaft Iu<\/td>\n<td>Tr\u1ea1m ti\u00eam d\u00f2ng \u0111i\u1ec7n cao v\u1edbi thu th\u1eadp d\u1eef li\u1ec7u nhi\u1ec7t \u0111i\u1ec7n \u0111a k\u00eanh<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c li\u00ean t\u1ee5c cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng nhi\u1ec7t; v\u1ecb tr\u00ed nhi\u1ec7t \u0111i\u1ec7n theo quy \u01b0\u1edbc ti\u00eau chu\u1ea9n; \u0111o \u0111i\u1ec7n \u00e1p millivolt qua c\u00e1c c\u1ef1c<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng \u0111i\u1ec7n m\u00f4i<\/td>\n<td>T\u00ednh to\u00e0n v\u1eb9n c\u00e1ch \u0111i\u1ec7n gi\u1eefa c\u00e1c c\u1ef1c, gi\u1eefa c\u00e1c ph\u1ea7n s\u1ed1ng v\u00e0 khung, v\u00e0 qua c\u00e1c ti\u1ebfp \u0111i\u1ec3m m\u1edf<\/td>\n<td><strong>B\u00e0n th\u1eed nghi\u1ec7m \u0111i\u1ec7n \u00e1p cao<\/strong> v\u1edbi ph\u00e1t hi\u1ec7n ng\u01b0\u1ee1ng d\u00f2ng r\u00f2<\/td>\n<td>\u0110i\u1ec7n \u00e1p th\u1eed nghi\u1ec7m th\u01b0\u1eddng l\u00e0 2.5\u20133.5 kV AC t\u00f9y thu\u1ed9c v\u00e0o \u0111i\u1ec7n \u00e1p c\u00e1ch \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c Ui; ng\u01b0\u1ee1ng ng\u1eaft \u0111\u00e3 hi\u1ec7u chu\u1ea9n tr\u00ean d\u00f2ng r\u00f2; \u0111i\u1ec1u khi\u1ec3n th\u1eddi gian t\u0103ng v\u00e0 gi\u1eef<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng ng\u1eaft \u0111\u1ecbnh m\u1ee9c (Icu \/ Ics)<\/td>\n<td>B\u1ed9 ng\u1eaft \u0111i\u1ec7n ng\u1eaft d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch cu\u1ed1i c\u00f9ng v\u00e0 d\u1ecbch v\u1ee5 \u0111\u1ecbnh m\u1ee9c c\u1ee7a n\u00f3 v\u00e0 v\u1eabn c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng theo chu\u1ed7i th\u1eed nghi\u1ec7m sau khi th\u1eed nghi\u1ec7m c\u1ee7a ti\u00eau chu\u1ea9n<\/td>\n<td>Ph\u00f2ng th\u00ed nghi\u1ec7m ng\u1eafn m\u1ea1ch c\u00f4ng su\u1ea5t cao (tr\u1ea1m \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn)<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n ti\u1ec1m n\u0103ng t\u1eeb 25 kA \u0111\u1ebfn 100 kA v\u00e0 h\u01a1n n\u1eefa t\u1ea1i \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t \u0111\u00e3 c\u00f4ng b\u1ed1; kh\u00f4ng kh\u1ea3 thi v\u1ec1 m\u1eb7t kinh t\u1ebf trong nh\u00e0 cho h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n<\/td>\n<td>C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng s\u1ed1ng s\u00f3t qua s\u1ed1 l\u1ea7n ho\u1ea1t \u0111\u1ed9ng \u0111\u00e3 c\u00f4ng b\u1ed1 v\u1edbi v\u00e0 kh\u00f4ng c\u00f3 d\u00f2ng \u0111i\u1ec7n<\/td>\n<td>Thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n v\u1edbi k\u00edch ho\u1ea1t b\u1eb1ng \u0111\u1ed9ng c\u01a1 v\u00e0 \u0111\u1ebfm chu k\u1ef3<\/td>\n<td>S\u1ed1 l\u1ea7n ho\u1ea1t \u0111\u1ed9ng t\u1eeb 8,000 \u0111\u1ebfn 20,000 v\u00e0 h\u01a1n th\u1ebf n\u1eefa t\u00f9y thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc khung; ng\u00e2n h\u00e0ng t\u1ea3i cho ph\u1ea7n mang d\u00f2ng \u0111i\u1ec7n c\u1ee7a chu\u1ed7i; ghi l\u1ea1i xu h\u01b0\u1edbng \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Th\u1eed nghi\u1ec7m lo\u1ea1i so v\u1edbi th\u1eed nghi\u1ec7m \u0111\u1ecbnh k\u1ef3: N\u01a1i ph\u00f2ng th\u00ed nghi\u1ec7m n\u1ed9i b\u1ed9 ph\u00f9 h\u1ee3p<\/h2>\n<p>S\u1ef1 ph\u00e2n bi\u1ec7t ch\u00ednh trong vi\u1ec7c t\u1ea1o ra m\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m MCCB l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa th\u1eed nghi\u1ec7m lo\u1ea1i v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1ecbnh k\u1ef3, v\u00ec \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb \u0111\u1ec3 mua ho\u1eb7c thu\u00ea. C\u1ee5 th\u1ec3, c\u00e1c th\u1eed nghi\u1ec7m cho kh\u1ea3 n\u0103ng ng\u1eaft ng\u1eafn m\u1ea1ch, th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 Icu v\u00e0 Ics, y\u00eau c\u1ea7u truy c\u1eadp v\u00e0o m\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m c\u00f3 c\u00f4ng su\u1ea5t cao c\u00f3 kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t m\u1ee9c d\u00f2ng \u0111i\u1ec7n l\u00ean \u0111\u1ebfn 100 kA t\u1ea1i \u0111i\u1ec7n \u00e1p v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh. Vi\u1ec7c thi\u1ebft l\u1eadp lo\u1ea1i ph\u00f2ng th\u00ed nghi\u1ec7m n\u00e0y c\u00f3 th\u1ec3 t\u1ed1n h\u00e0ng tri\u1ec7u \u0111\u00f4 la, \u0111i\u1ec1u n\u00e0y ch\u1ec9 c\u00f3 th\u1ec3 bi\u1ec7n minh cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ed9 ng\u1eaft \u0111i\u1ec7n l\u1edbn nh\u1ea5t th\u1ebf gi\u1edbi. T\u1ea5t c\u1ea3 nh\u1eefng ng\u01b0\u1eddi c\u00f2n l\u1ea1i ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 \u0111\u1eb7t th\u1eddi gian trong c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m b\u00ean th\u1ee9 ba \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn. \u0110\u00e2y l\u00e0 v\u1ecb tr\u00ed kinh t\u1ebf \u0111\u00fang \u0111\u1eafn, v\u00e0 c\u00e1c qu\u1ea3n l\u00fd mua s\u1eafm kh\u00f4ng c\u00f3 l\u00fd do g\u00ec \u0111\u1ec3 ngh\u0129 kh\u00e1c \u0111i.<\/p>\n<p>Tuy nhi\u00ean, m\u1ecdi th\u1ee9 kh\u00e1c trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m \u0111\u1ec1u do c\u00f4ng ty t\u1ef1 th\u1ef1c hi\u1ec7n. C\u00e1c chuy\u1ebfn trip nhi\u1ec7t v\u00e0 trip t\u1eeb lu\u00f4n \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n, c\u0169ng nh\u01b0 x\u00e1c minh s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 theo d\u00f5i s\u1ef1 gi\u1ea3m millivolt trong qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c. C\u00e1c c\u00f4ng ty ch\u1ecdn thu\u00ea ngo\u00e0i quy tr\u00ecnh c\u1ee7a h\u1ecd thay v\u00ec gi\u1eef ch\u00fang trong n\u1ed9i b\u1ed9 s\u1ebd v\u00f4 t\u00ecnh th\u00eam nhi\u1ec1u tu\u1ea7n v\u00e0o s\u1ea3n xu\u1ea5t c\u1ee7a h\u1ecd. Tuy nhi\u00ean, \u0111\u00e3 c\u00f3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p, khi m\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00f4ng ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c m\u1eabu ch\u1ee9ng nh\u1eadn c\u1ee7a h\u1ecd v\u00e0 kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c y\u00eau c\u1ea7u.<\/p>\n<h2>B\u1ed1n tr\u1ee5 c\u1ed9t c\u1ee7a m\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m th\u1eed nghi\u1ec7m MCCB n\u1ed9i b\u1ed9<\/h2>\n<p><span style=\"color: #ff0000;\">B\u0103ng hi\u1ec7u chu\u1ea9n trip nhi\u1ec7t<\/span>\u00a0l\u00e0 \u201cng\u1ef1a l\u00e0m vi\u1ec7c\u201d c\u1ee7a ng\u00e0y h\u00f4m nay v\u00e0 c\u0169ng l\u00e0 lo\u1ea1i thi\u1ebft b\u1ecb m\u00e0 s\u1ef1 th\u1ea5t b\u1ea1i trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt g\u00e2y ra chi ph\u00ed l\u1edbn nh\u1ea5t. C\u00e1c \u0111\u1ecbnh lu\u1eadt v\u1eadt l\u00fd l\u00e0 kh\u00f4ng thi\u00ean v\u1ecb, n\u01a1i \u0111\u1ed9 l\u1ec7ch c\u1ee7a ph\u1ea7n t\u1eed bimetal ph\u1ee5 thu\u1ed9c v\u00e0o n\u0103ng l\u01b0\u1ee3ng cung c\u1ea5p cho ph\u1ea7n t\u1eed bimetal, \u0111i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o d\u00f2ng \u0111i\u1ec7n RMS v\u00e0 th\u1eddi gian. M\u1ed9t ngu\u1ed3n \u0111i\u1ec7n v\u1edbi \u0111\u1ed9 g\u1ee3n 2% ho\u1eb7c tr\u00f4i s\u1ebd d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e2n t\u00e1n th\u1eddi gian trip m\u00e0 kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c v\u1edbi s\u1ef1 bi\u1ebfn \u0111\u1ed5i s\u1ea3n ph\u1ea9m th\u1ef1c. Do \u0111\u00f3, ph\u00f2ng th\u00ed nghi\u1ec7m kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t \u0111\u01b0\u1ee3c li\u1ec7u v\u1ea5n \u0111\u1ec1 xu\u1ea5t ph\u00e1t t\u1eeb hi\u1ec7u chu\u1ea9n hay t\u1eeb thi\u1ebft b\u1ecb b\u1ecb l\u1ed7i. C\u00e1c th\u00f4ng s\u1ed1 c\u1ea7n \u0111\u01b0\u1ee3c bao g\u1ed3m trong y\u00eau c\u1ea7u b\u00e1o gi\u00e1 bao g\u1ed3m: \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a d\u00f2ng \u0111i\u1ec7n (lo\u1ea1i 0.5 ho\u1eb7c cao h\u01a1n), ti\u00eam \u0111\u1ed9c l\u1eadp theo t\u1eebng c\u1ef1c cho ph\u00e9p th\u1eed nghi\u1ec7m c\u00e1c c\u1ea7u dao ba c\u1ef1c theo t\u1eebng c\u1ef1c theo y\u00eau c\u1ea7u ti\u00eau chu\u1ea9n, v\u00e0 m\u00f4i tr\u01b0\u1eddng ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00ec bimetal \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n \u1edf 22 \u0111\u1ed9 kh\u00f4ng ki\u1ec3m so\u00e1t s\u1ebd kh\u00f4ng trip \u1edf gi\u00e1 tr\u1ecb ch\u00ednh x\u00e1c khi nhi\u1ec7t \u0111\u1ed9 40 \u0111\u1ed9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c minh.<span style=\"color: #333333; font-size: 16px; font-weight: 400;\"> Trong th\u1ef1c t\u1ebf, lo\u1ea1i n\u00e0y chia th\u00e0nh hai m\u00e1y b\u1ed5 sung: m\u1ed9t <\/span><a style=\"font-size: 16px; font-weight: 400;\" href=\"https:\/\/benlongkj.com\/vi\/mccb-manual-thermal-calibration-bench-product\/\">b\u00e0n hi\u1ec7u chu\u1ea9n nhi\u1ec7t th\u1ee7 c\u00f4ng<\/a><span style=\"color: #333333; font-size: 16px; font-weight: 400;\"> cho c\u00f4ng vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 c\u00e1c l\u1ea7n x\u00e1c minh ng\u1eafn \u1edf 1.30\u00d7Ir v\u00e0 cao h\u01a1n, v\u00e0 m\u1ed9t b\u0103ng <\/span><a style=\"font-size: 16px; font-weight: 400;\" href=\"https:\/\/benlongkj.com\/vi\/mccb-long-time-thermal-calibration-bench-product\/\">hi\u1ec7u chu\u1ea9n nhi\u1ec7t l\u00e2u d\u00e0i<\/a><span style=\"color: #333333; font-size: 16px; font-weight: 400;\"> cho c\u00e1c th\u1eed nghi\u1ec7m d\u00f2ng \u0111i\u1ec7n kh\u00f4ng trip v\u00e0 trip th\u00f4ng th\u01b0\u1eddng, n\u01a1i m\u1ed9t l\u1ea7n x\u00e1c minh c\u00f3 th\u1ec3 chi\u1ebfm m\u1ed9t tr\u1ea1m t\u1eeb m\u1ed9t \u0111\u1ebfn hai gi\u1edd v\u00e0 kh\u1ea3 n\u0103ng l\u00f4 x\u00e1c \u0111\u1ecbnh th\u00f4ng l\u01b0\u1ee3ng ph\u00f2ng th\u00ed nghi\u1ec7m.<\/span><\/p>\n<p><span style=\"color: #ff0000;\">B\u0103ng th\u1eed nghi\u1ec7m trip t\u1eeb<\/span> x\u00e1c minh s\u1ef1 gi\u1ea3i ph\u00f3ng t\u1ee9c th\u1eddi, v\u00e0 th\u00e1ch th\u1ee9c k\u1ef9 thu\u1eadt x\u00e1c \u0111\u1ecbnh c\u1ee7a ch\u00fang l\u00e0 t\u00e1ch bi\u1ec7t h\u00e0nh vi t\u1eeb t\u00ednh kh\u1ecfi h\u00e0nh vi nhi\u1ec7t. Ti\u00eam m\u1ed9t d\u00f2ng th\u1eed nghi\u1ec7m 10\u00d7In qu\u00e1 l\u00e2u b\u1eaft \u0111\u1ea7u l\u00e0m n\u00f3ng bimetal, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra m\u1ed9t chuy\u1ebfn trip nhi\u1ec7t gi\u1ea3 d\u1ea1ng nh\u01b0 m\u1ed9t chuy\u1ebfn trip t\u1eeb v\u00e0 t\u1ea1o ra m\u1ed9t k\u1ebft qu\u1ea3 \u0111\u00fang gi\u1ea3. M\u1ed9t <a href=\"https:\/\/benlongkj.com\/vi\/mccb-manual-magnetic-trip-test-bench-product\/\">b\u0103ng th\u1eed nghi\u1ec7m trip t\u1eeb MCCB<\/a> s\u1eed d\u1ee5ng ti\u00eam ng\u1eafn h\u1ea1n c\u00f3 ki\u1ec3m so\u00e1t v\u1edbi d\u00f2ng \u0111i\u1ec7n l\u1eadp tr\u00ecnh trong kho\u1ea3ng 5\u201310\u00d7In v\u00e0 ghi l\u1ea1i th\u1eddi gian trip trong l\u1edbp mili gi\u00e2y, v\u00ec s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u1ed9t gi\u1ea3i ph\u00f3ng ho\u1ea1t \u0111\u1ed9ng \u1edf 9\u00d7In v\u00e0 11\u00d7In c\u00f3 th\u1ec3 ch\u1ec9 l\u00e0 m\u1ed9t n\u1eeda chu k\u1ef3. \u0110\u1ed1i v\u1edbi vi\u1ec7c mua s\u1eafm, c\u00e1c \u0111i\u1ec3m th\u00f4ng s\u1ed1 c\u1ea7n x\u00e1c nh\u1eadn l\u00e0 k\u00edch th\u01b0\u1edbc khung t\u1ed1i \u0111a m\u00e0 c\u00e1c thanh bus v\u00e0 thi\u1ebft b\u1ecb k\u1eb9p \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1, li\u1ec7u c\u00f3 h\u1ed7 tr\u1ee3 th\u1eed nghi\u1ec7m \u0111\u1ed3ng th\u1eddi b\u1ed1n c\u1ef1c hay kh\u00f4ng, v\u00e0 li\u1ec7u c\u00f3 bao g\u1ed3m x\u00e1c minh ti\u1ebfp x\u00fac ph\u1ee5 hay kh\u00f4ng.<\/p>\n<p><span style=\"color: #ff0000;\">C\u00e1c tr\u1ea1m gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 gi\u1ea3m millivolt<\/span>\u00a0c\u00f3 hai c\u00f4ng vi\u1ec7c c\u00f3 m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n. B\u00e0i ki\u1ec3m tra t\u0103ng nhi\u1ec7t \u0111\u1eb7t d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c trong c\u1ea7u dao cho \u0111\u1ebfn khi \u0111\u1ea1t \u0111\u01b0\u1ee3c tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng nhi\u1ec7t v\u00e0 ki\u1ec3m tra s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 so v\u1edbi c\u00e1c gi\u1edbi h\u1ea1n; s\u1ef1 gi\u1ea3m millivolt l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecdc gi\u1ed1ng nhau trong nh\u00e0 m\u00e1y v\u00ec \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac l\u00e0 l\u00fd do quan tr\u1ecdng nh\u1ea5t g\u00e2y ra nhi\u1ec7t. S\u1ef1 thay \u0111\u1ed5i t\u0103ng l\u00ean trong s\u1ef1 gi\u1ea3m millivolt \u0111\u01b0\u1ee3c ghi l\u1ea1i trong c\u00e1c l\u00f4 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u \u0111\u1ea7u ti\u00ean c\u1ee7a v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac ho\u1eb7c s\u1ef1 sai l\u1ec7ch trong qu\u00e1 tr\u00ecnh \u0111inh t\u00e1n, v\u00e0 \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ph\u01b0\u01a1ng ph\u00e1p n\u00e0y n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u00ean m\u1ecdi d\u00e2y chuy\u1ec1n th\u1eed nghi\u1ec7m, kh\u00f4ng ch\u1ec9 trong ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n<p><span style=\"color: #ff0000;\">B\u00e0n th\u1eed nghi\u1ec7m \u0111i\u1ec7n \u00e1p cao<\/span>\u00a0C\u00e1c b\u00e0i ki\u1ec3m tra ch\u1ecbu \u0111i\u1ec7n m\u00f4i thu\u1ed9c v\u1ec1 nh\u1eefng b\u00e0i ki\u1ec3m tra \u0111\u01a1n gi\u1ea3n nh\u1ea5t trong b\u1ed1n lo\u1ea1i. Tuy nhi\u00ean, ch\u00fang l\u00e0 quan tr\u1ecdng nh\u1ea5t cho m\u1ee5c \u0111\u00edch an to\u00e0n. C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ph\u00e2n bi\u1ec7t thi\u1ebft b\u1ecb hipot ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi v\u1eadt li\u1ec7u th\u01b0\u01a1ng m\u1ea1i li\u00ean quan \u0111\u1ebfn kh\u1ea3 n\u0103ng c\u1ee7a thi\u1ebft b\u1ecb duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a \u0111i\u1ec7n \u00e1p th\u1eed nghi\u1ec7m trong s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a t\u1ea3i \u0111i\u1ec7n dung c\u1ee7a c\u1ea7u dao, \u0111i\u1ec3m hi\u1ec7u ch\u1ec9nh d\u00f2ng r\u00f2 r\u1ea5t ch\u00ednh x\u00e1c, v\u00e0 c\u00e1c chu\u1ed7i ramp-dwell-ramp c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh. B\u1ea3o v\u1ec7 ng\u01b0\u1eddi v\u1eadn h\u00e0nh v\u00e0 kh\u1ea3 n\u0103ng l\u1eb7p l\u1ea1i c\u1ee7a ti\u1ebfp x\u00fac c\u0169ng quan tr\u1ecdng kh\u00f4ng k\u00e9m: m\u1ed9t <a href=\"https:\/\/benlongkj.com\/vi\/mccb-semi-automatic-high-voltage-test-bench-product\/\">b\u00e0n th\u1eed nghi\u1ec7m \u0111i\u1ec7n \u00e1p cao b\u00e1n t\u1ef1 \u0111\u1ed9ng<\/a> v\u1edbi thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 v\u00e0 chu\u1ed7i th\u1eed nghi\u1ec7m t\u1ef1 \u0111\u1ed9ng lo\u1ea1i b\u1ecf c\u1ea3 hai v\u1ea5n \u0111\u1ec1 an to\u00e0n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a ti\u1ebfp x\u00fac m\u00e0 vi\u1ec7c th\u0103m d\u00f2 th\u1ee7 c\u00f4ng g\u00e2y ra \u2014 m\u1ed9t b\u00e0i ki\u1ec3m tra \u0111i\u1ec7n m\u00f4i v\u1edbi ti\u1ebfp x\u00fac th\u0103m d\u00f2 kh\u00f4ng li\u00ean t\u1ee5c l\u00e0 m\u1ed9t b\u00e0i ki\u1ec3m tra kh\u00f4ng ch\u1ee9ng minh \u0111\u01b0\u1ee3c g\u00ec.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/07\/MCCB-semi-automatic-high-voltage-test-bench-parameters.webp\" alt=\"Th\u00f4ng s\u1ed1 b\u00e0n th\u1eed nghi\u1ec7m \u0111i\u1ec7n \u00e1p cao b\u00e1n t\u1ef1 \u0111\u1ed9ng MCCB cho th\u1eed nghi\u1ec7m ch\u1ecbu \u0111i\u1ec7n m\u00f4i v\u1edbi ph\u00e1t hi\u1ec7n d\u00f2ng r\u00f2\" \/><\/p>\n<h2>T\u1eeb c\u00e1c B\u00e0n ri\u00eang l\u1ebb \u0111\u1ebfn m\u1ed9t Ph\u00f2ng th\u00ed nghi\u1ec7m T\u00edch h\u1ee3p<\/h2>\n<p>Ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t th\u1ef1c hi\u1ec7n c\u00f9ng m\u1ed9t b\u00e0i ki\u1ec3m tra v\u1edbi c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng kh\u00e1c nhau, v\u00e0 chi\u1ebfn l\u01b0\u1ee3c thi\u1ebft b\u1ecb n\u00ean ph\u1ea3n \u00e1nh s\u1ef1 li\u00ean t\u1ee5c \u0111\u00f3. Trong ph\u00e1t tri\u1ec3n, c\u00e1c k\u1ef9 s\u01b0 c\u1ea7n c\u00e1c b\u00e0n linh ho\u1ea1t v\u1edbi quy\u1ec1n truy c\u1eadp \u0111\u1ea7y \u0111\u1ee7 v\u00e0o c\u00e1c tham s\u1ed1 \u2014 d\u00f2ng \u0111i\u1ec7n ti\u00eam c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh, d\u1eef li\u1ec7u th\u1eddi gian th\u00f4, l\u1eadp b\u1ea3n \u0111\u1ed3 c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n. Khi kh\u1ed1i l\u01b0\u1ee3ng x\u00e1c minh t\u0103ng l\u00ean, kh\u00f4ng gian s\u00e0n, th\u1eddi gian x\u1eed l\u00fd c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh, v\u00e0 vi\u1ec7c h\u1ee3p nh\u1ea5t d\u1eef li\u1ec7u b\u1eaft \u0111\u1ea7u chi\u1ebfm \u01b0u th\u1ebf trong ph\u01b0\u01a1ng tr\u00ecnh chi ph\u00ed, v\u00e0 l\u1eadp lu\u1eadn chuy\u1ec3n sang t\u00edch h\u1ee3p: k\u1ebft h\u1ee3p th\u1eed nghi\u1ec7m trip t\u1eeb t\u00ednh, hi\u1ec7u chu\u1ea9n nhi\u1ec7t, v\u00e0 hi\u1ec7u chu\u1ea9n nhi\u1ec7t \u0111\u1ed9 d\u00e0i v\u00e0o m\u1ed9t tr\u1ea1m duy nh\u1ea5t nh\u01b0 m\u1ed9t <a href=\"https:\/\/benlongkj.com\/vi\/mccb-lab-test-machine-product\/\">b\u00e0n th\u1eed nghi\u1ec7m t\u00edch h\u1ee3p ph\u00f2ng th\u00ed nghi\u1ec7m MCCB<\/a>, n\u01a1i m\u1ed9t ho\u1ea1t \u0111\u1ed9ng t\u1ea3i v\u00e0 m\u1ed9t b\u1ea3n ghi d\u1eef li\u1ec7u bao ph\u1ee7 nhi\u1ec1u x\u00e1c minh. \u0110\u1ed1i v\u1edbi m\u1ed9t nh\u00f3m mua s\u1eafm, l\u1ed9 tr\u00ecnh t\u00edch h\u1ee3p gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng nh\u00e0 cung c\u1ea5p, thi\u1ebft b\u1ecb, v\u00e0 h\u1ee3p \u0111\u1ed3ng hi\u1ec7u chu\u1ea9n c\u1ea7n qu\u1ea3n l\u00fd; \u0111\u1ed1i v\u1edbi k\u1ef9 s\u01b0 ph\u00f2ng th\u00ed nghi\u1ec7m, n\u00f3 lo\u1ea1i b\u1ecf vi\u1ec7c k\u1eb9p l\u1ea1i gi\u1eefa c\u00e1c b\u00e0i ki\u1ec3m tra m\u00e0 ch\u00ednh n\u00f3 l\u00e0 ngu\u1ed3n g\u00e2y ra s\u1ef1 bi\u1ebfn \u0111\u1ed5i \u0111o l\u01b0\u1eddng. C\u00e1c h\u1eb1ng s\u1ed1 k\u1ef9 thu\u1eadt trong qu\u00e1 tr\u00ecnh di chuy\u1ec3n \u0111\u00f3 l\u00e0 nh\u1eefng g\u00ec b\u00e0i vi\u1ebft n\u00e0y \u0111\u00e3 nh\u1ea5n m\u1ea1nh: \u0111\u1ed9 ch\u00ednh x\u00e1c d\u00f2ng \u0111i\u1ec7n, ki\u1ec3m so\u00e1t nhi\u1ec7t, \u0111\u1ed9 ph\u00e2n gi\u1ea3i th\u1eddi gian, v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a ti\u1ebfp x\u00fac. T\u00edch h\u1ee3p thay \u0111\u1ed5i th\u00f4ng l\u01b0\u1ee3ng v\u00e0 di\u1ec7n t\u00edch; n\u00f3 kh\u00f4ng bao gi\u1edd \u0111\u01b0\u1ee3c thay \u0111\u1ed5i \u0111o l\u01b0\u1eddng.<\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>Thi\u1ebft b\u1ecb n\u00e0o c\u1ea7n thi\u1ebft \u0111\u1ec3 th\u1eed nghi\u1ec7m m\u1ed9t MCCB t\u1ea1i ch\u1ed7?<\/h3>\n<p>M\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m to\u00e0n di\u1ec7n bao g\u1ed3m b\u1ed1n b\u1ed9 ph\u1eadn: m\u1ed9t b\u00e0n hi\u1ec7u chu\u1ea9n r\u01a1 le nhi\u1ec7t v\u1edbi m\u1ed9t m\u00e1y ph\u00e1t \u0111i\u1ec7n d\u00f2ng \u0111i\u1ec7n ch\u00ednh x\u00e1c, m\u1ed9t b\u00e0n th\u1eed nghi\u1ec7m r\u01a1 le t\u1eeb v\u1edbi vi\u1ec7c gi\u1edbi thi\u1ec7u xung \u0111i\u1ec1u ch\u1ec9nh, m\u1ed9t tr\u1ea1m t\u0103ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 gi\u1ea3m millivolt v\u1edbi m\u1ed9t h\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u thermocouple, v\u00e0 m\u1ed9t b\u00e0n th\u1eed nghi\u1ec7m \u0111i\u1ec7n \u00e1p cao cho \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i. Th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng ng\u1eaft m\u1ea1ch ng\u1eafn l\u00e0 m\u1ed9t ngo\u1ea1i l\u1ec7 \u0111\u1ed1i v\u1edbi quy t\u1eafc n\u00e0y v\u00ec n\u00f3 y\u00eau c\u1ea7u m\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m c\u00f4ng su\u1ea5t cao \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn th\u01b0\u1eddng \u0111\u01b0\u1ee3c thu\u00ea \u0111\u1ec3 ho\u00e0n th\u00e0nh.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa th\u1eed nghi\u1ec7m lo\u1ea1i v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1ecbnh k\u1ef3 cho MCCB l\u00e0 g\u00ec?<\/h3>\n<p>Th\u1eed nghi\u1ec7m lo\u1ea1i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c m\u1eabu \u0111\u01b0\u1ee3c ch\u1ecdn ch\u1ec9 \u0111\u1ec3 x\u00e1c nh\u1eadn r\u1eb1ng thi\u1ebft k\u1ebf c\u1ee5 th\u1ec3 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng nh\u01b0 IEC 60947-2 ho\u1eb7c UL 489, c\u00f3 th\u1ec3 bao g\u1ed3m c\u00e1c th\u1eed nghi\u1ec7m ph\u00e1 h\u1ee7y nh\u01b0 th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng ng\u1eaft d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n ng\u1eafn m\u1ea1ch. Th\u1eed nghi\u1ec7m \u0111\u1ecbnh k\u1ef3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n d\u1ecdc theo d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t tr\u00ean m\u1ed7i s\u1ea3n ph\u1ea9m, bao g\u1ed3m x\u00e1c minh hi\u1ec7u chu\u1ea9n r\u01a1 le, th\u1eed nghi\u1ec7m ch\u1ecbu \u0111i\u1ec7n m\u00f4i v\u00e0 th\u1eed nghi\u1ec7m ch\u1ee9c n\u0103ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u00fang.<\/p>\n<h3>T\u1ea1i sao nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng l\u1ea1i quan tr\u1ecdng trong vi\u1ec7c hi\u1ec7u chu\u1ea9n r\u01a1 le MCCB?<\/h3>\n<p>R\u01a1 le nhi\u1ec7t l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb ch\u1ee9a v\u1eadt li\u1ec7u bimetal \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 \u0111\u1ec3 ch\u1ec9 ra \u0111i\u1ec3m ng\u1eaft ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ed5ng nhi\u1ec7t, bao g\u1ed3m c\u1ea3 nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. B\u1ed9 ng\u1eaft m\u1ea1ch \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec3m ng\u1eaft c\u1ee7a n\u00f3 theo nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng tham chi\u1ebfu 40 \u0111\u1ed9 s\u1ebd ng\u1eaft \u1edf gi\u00e1 tr\u1ecb d\u00f2ng \u0111i\u1ec7n cao h\u01a1n trong m\u00f4i tr\u01b0\u1eddng c\u00f3 nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng 20 \u0111\u1ed9. Do \u0111\u00f3, c\u00e1c \u0111i\u1ec1u ki\u1ec7n ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ec3 ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng v\u00ec n\u1ebfu kh\u00f4ng c\u00f3 ch\u00fang s\u1ebd kh\u00f4ng c\u00f3 s\u1ef1 so s\u00e1nh trong k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m.<\/p>\n<h3>M\u1ed9t ph\u00f2ng th\u00ed nghi\u1ec7m n\u00ean mua c\u00e1c b\u00e0n th\u1eed nghi\u1ec7m ri\u00eang bi\u1ec7t hay m\u1ed9t b\u00e0n th\u1eed nghi\u1ec7m t\u00edch h\u1ee3p?<\/h3>\n<p>C\u00e1c b\u00e0n \u0111\u1ed9c l\u1eadp ph\u00f9 h\u1ee3p cho c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m ph\u00e1t tri\u1ec3n y\u00eau c\u1ea7u truy c\u1eadp \u0111\u1ea7y \u0111\u1ee7 v\u00e0o c\u00e1c th\u00f4ng s\u1ed1 v\u00e0 th\u1ef1c hi\u1ec7n nhi\u1ec1u th\u1eed nghi\u1ec7m \u0111\u1ed3ng th\u1eddi. M\u1ed9t b\u00e0n t\u00edch h\u1ee3p bao g\u1ed3m ng\u1eaft t\u1eeb, hi\u1ec7u chu\u1ea9n nhi\u1ec7t v\u00e0 hi\u1ec7u chu\u1ea9n nhi\u1ec7t d\u00e0i d\u00e0nh cho c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m m\u00e0 kh\u1ed1i l\u01b0\u1ee3ng ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3, kh\u00f4ng gian c\u00f3 s\u1eb5n trong t\u00f2a nh\u00e0 v\u00e0 kh\u1ea3 n\u0103ng truy xu\u1ea5t k\u1ebft qu\u1ea3 c\u00e1 nh\u00e2n quan tr\u1ecdng h\u01a1n b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec kh\u00e1c. Nhi\u1ec1u c\u00f4ng ty c\u00f3 c\u1ea3 hai thi\u1ebft l\u1eadp n\u00e0y s\u1eb5n c\u00f3 cho vi\u1ec7c s\u1eed d\u1ee5ng c\u1ee7a h\u1ecd: c\u00e1c b\u00e0n linh ho\u1ea1t ri\u00eang l\u1ebb trong R&amp;D, v\u00e0 c\u00e1c thi\u1ebft l\u1eadp t\u00edch h\u1ee3p cho vi\u1ec7c x\u00e1c minh v\u00e0 th\u1eed nghi\u1ec7m ki\u1ec3m to\u00e1n.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.iec.ch\" target=\"_blank\" rel=\"noopener\">IEC \u2014 \u1ee6y ban K\u1ef9 thu\u1eadt \u0110i\u1ec7n Qu\u1ed1c t\u1ebf<\/a>. Nh\u00e0 xu\u1ea5t b\u1ea3n c\u1ee7a IEC 60947-2, ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m qu\u1ed1c t\u1ebf cho c\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch, x\u00e1c \u0111\u1ecbnh ch\u1ebf \u0111\u1ed9 th\u1eed nghi\u1ec7m lo\u1ea1i v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1ecbnh k\u1ef3 \u0111\u01b0\u1ee3c tham chi\u1ebfu trong to\u00e0n b\u1ed9 b\u00e0i vi\u1ebft n\u00e0y.<\/li>\n<li><a href=\"https:\/\/www.ul.com\" target=\"_blank\" rel=\"noopener\">UL \u2014 Ti\u00eau chu\u1ea9n UL 489 cho B\u1ed9 ng\u1eaft m\u1ea1ch d\u1ea1ng khu\u00f4n<\/a>. Ti\u00eau chu\u1ea9n an to\u00e0n B\u1eafc M\u1ef9 bao g\u1ed3m y\u00eau c\u1ea7u v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 th\u1eed nghi\u1ec7m MCCB.<\/li>\n<li><a href=\"https:\/\/www.nema.org\" target=\"_blank\" rel=\"noopener\">NEMA \u2014 H\u01b0\u1edbng d\u1eabn AB 4 v\u1ec1 Ki\u1ec3m tra v\u00e0 B\u1ea3o tr\u00ec Ph\u00f2ng ng\u1eeba B\u1ed9 ng\u1eaft m\u1ea1ch d\u1ea1ng khu\u00f4n<\/a>. H\u01b0\u1edbng d\u1eabn th\u1eed nghi\u1ec7m th\u1ef1c \u0111\u1ecba \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 x\u00e1c minh MCCB trong d\u1ecbch v\u1ee5, bao g\u1ed3m quy tr\u00ecnh th\u1eed nghi\u1ec7m millivolt-drop v\u00e0 ng\u1eaft.<\/li>\n<li><a href=\"https:\/\/www.ieee.org\" target=\"_blank\" rel=\"noopener\">IEEE \u2014 Ti\u00eau chu\u1ea9n v\u00e0 Nghi\u00ean c\u1ee9u v\u1ec1 B\u1ea3o v\u1ec7 M\u1ea1ch \u0110i\u1ec7n Th\u1ea5p<\/a>. T\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt v\u1ec1 x\u00e1c minh hi\u1ec7u su\u1ea5t c\u1ee7a c\u1ea7u dao v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m.<\/li>\n<\/ul>\n<p>Ch\u1ec9 \u0111\u1ecbnh <strong>Thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m MCCB<\/strong> cu\u1ed1i c\u00f9ng l\u00e0 m\u1ed9t b\u00e0i t\u1eadp v\u1ec1 \u0111o l\u01b0\u1eddng, kh\u00f4ng ph\u1ea3i m\u00e1y m\u00f3c. L\u1edbp \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ngu\u1ed3n th\u1eed nghi\u1ec7m, \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a h\u1ec7 th\u1ed1ng th\u1eddi gian, ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ph\u00f2ng n\u01a1i hi\u1ec7u chu\u1ea9n di\u1ec5n ra, v\u00e0 m\u1ee9c \u0111\u1ed9 l\u1eb7p l\u1ea1i c\u1ee7a thi\u1ebft b\u1ecb s\u1ebd x\u00e1c \u0111\u1ecbnh xem d\u1eef li\u1ec7u s\u1ea3n xu\u1ea5t c\u00f3 ph\u00f9 h\u1ee3p \u0111\u1ec3 x\u00e1c minh t\u1ea1i c\u01a1 quan ch\u1ee9ng nh\u1eadn hay kh\u00f4ng. C\u00e1c k\u1ef9 s\u01b0 ph\u00e1t tri\u1ec3n \u0111\u01b0a nh\u1eefng con s\u1ed1 n\u00e0y v\u00e0o th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cung c\u1ea5p cho b\u1ed9 ph\u1eadn mua s\u1eafm d\u1eef li\u1ec7u c\u00f3 th\u1ec3 bi\u1ec7n minh trong m\u1ed7i l\u1ea7n x\u00e1c minh. Benlong Automation s\u1ea3n xu\u1ea5t b\u00e0n hi\u1ec7u chu\u1ea9n, tr\u1ea1m trip t\u1eeb t\u00ednh, v\u00e0 b\u00e0n th\u1eed nghi\u1ec7m t\u00edch h\u1ee3p cho c\u1ea7u dao d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0y v\u00e0 do \u0111\u00f3 \u0111\u00e3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng thi\u1ebft b\u1ecb th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng c\u1ee7a n\u00f3 ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n cao h\u01a1n so v\u1edbi c\u1ea7u dao t\u1ef1 n\u00f3.<\/p>","protected":false},"excerpt":{"rendered":"<p>In 2024, a molded case circuit breaker manufacturer located in Southeast Asia sent a new series of 250 A molded case circuit breaker to an independent testing laboratory for the IEC 60947-2 type test. The tests failed the temperature-rise test at the rated current. The engineering team was perplexed since the same circuit breakers had [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1214,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1213","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1213","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/comments?post=1213"}],"version-history":[{"count":2,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1213\/revisions"}],"predecessor-version":[{"id":1229,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/1213\/revisions\/1229"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media\/1214"}],"wp:attachment":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media?parent=1213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/categories?post=1213"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/tags?post=1213"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}