{"id":523,"date":"2026-06-06T22:37:14","date_gmt":"2026-06-06T22:37:14","guid":{"rendered":"https:\/\/khkrh7q1ur.wpdns.site\/?p=523"},"modified":"2026-06-06T22:37:16","modified_gmt":"2026-06-06T22:37:16","slug":"effective-preparation-for-the-acb-test","status":"publish","type":"post","link":"https:\/\/benlongkj.com\/vi\/blog\/effective-preparation-for-the-acb-test\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 chu\u1ea9n b\u1ecb hi\u1ec7u qu\u1ea3 cho k\u1ef3 thi ACB?"},"content":{"rendered":"<blockquote><p><strong>Th\u1eddi gian tr\u00ec ho\u00e3n s\u1ea3n xu\u1ea5t th\u1ef1c t\u1ebf:<\/strong> \u201cCh\u00fang t\u00f4i \u0111\u00e3 s\u1eafp x\u1ebfp m\u1ed9t b\u00e0i ki\u1ec3m tra ACB ho\u00e0n ch\u1ec9nh cho b\u1ed9 ng\u1eaft m\u1ea1ch ch\u00ednh 4.000 ampe c\u1ee7a m\u00ecnh trong m\u1ed9t cu\u1ed1i tu\u1ea7n khi nh\u00e0 m\u00e1y ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. Th\u1eadt kh\u00f4ng may, ch\u00fang t\u00f4i \u0111\u00e3 h\u1ebft th\u1eddi gian \u0111\u1ec3 ki\u1ec3m tra c\u00e1p giao ti\u1ebfp ETU v\u00e0 b\u1ed9 ph\u1eadn c\u01a1 kh\u00ed \u0111\u1ec3 l\u1eafp \u0111\u1eb7t c\u01a1 ch\u1ebf l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng \u0111\u00e3 b\u1ecb m\u1ea5t. B\u00e0i ki\u1ec3m tra b\u1ecb tr\u00ec ho\u00e3n hai tu\u1ea7n v\u00e0 g\u00e2y thi\u1ec7t h\u1ea1i $15.000 do m\u1ea5t th\u1eddi gian s\u1ea3n xu\u1ea5t.\u201d Qu\u1ea3n l\u00fd b\u1ea3o tr\u00ec trung t\u00e2m d\u1eef li\u1ec7u.<\/p><\/blockquote>\n<p>Ki\u1ec3m tra m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch kh\u00f4ng kh\u00ed (ACB) kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 ki\u1ec3m tra thi\u1ebft b\u1ecb c\u00f3 li\u00ean t\u1ee5c hay kh\u00f4ng; n\u00f3 c\u00f2n bao g\u1ed3m vi\u1ec7c x\u00e1c nh\u1eadn c\u01a1 ch\u1ebf l\u00f2 xo ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang, ki\u1ec3m tra c\u00e1c c\u00e0i \u0111\u1eb7t c\u1ee7a \u0110\u01a1n v\u1ecb Trip \u0110i\u1ec7n t\u1eed (ETU), \u0111o \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac v\u00e0 x\u00e1c nh\u1eadn t\u00ednh to\u00e0n v\u1eb9n c\u00e1ch \u0111i\u1ec7n \u1edf m\u1ee9c d\u00f2ng \u0111i\u1ec7n c\u1ef1c \u0111\u1ea1i (v\u00ed d\u1ee5, ki\u1ec3m tra l\u00ean \u0111\u1ebfn 6300A), v\u00e0 \u1edf m\u1ee9c \u0111i\u1ec7n \u00e1p c\u1ef1c \u0111\u1ea1i. Chu\u1ea9n b\u1ecb kh\u00f4ng \u0111\u00fang c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 kh\u00f4ng ch\u00ednh x\u00e1c, thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng, ho\u1eb7c tr\u01b0\u1eddng h\u1ee3p x\u1ea5u nh\u1ea5t l\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch b\u1ecb h\u1ecfng trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. <strong>Ki\u1ec3m tra ACB<\/strong> h\u01b0\u1edbng d\u1eabn cung c\u1ea5p cho b\u1ea1n danh s\u00e1ch chu\u1ea9n b\u1ecb t\u1eebng b\u01b0\u1edbc \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n \u0111ang ho\u00e0n th\u00e0nh c\u00e1c b\u00e0i ki\u1ec3m tra ACB m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, an to\u00e0n v\u00e0 theo quy \u0111\u1ecbnh IEC 60947-2.<\/p>\n<h2>H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m:<\/h2>\n<ul>\n<li>Danh s\u00e1ch ki\u1ec3m tra ki\u1ec3m tra v\u1eadt l\u00fd tr\u01b0\u1edbc khi th\u1eed nghi\u1ec7m (bao g\u1ed3m c\u01a1 ch\u1ebf l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng)<\/li>\n<li>C\u00e0i \u0111\u1eb7t \u0111i\u1ec7n: \u0111i d\u00e2y, \u0111i\u1ec3m ti\u00eam d\u00f2ng \u0111i\u1ec7n, v\u00e0 giao ti\u1ebfp ETU<\/li>\n<li>Chu\u1ea9n b\u1ecb an to\u00e0n v\u00e0 t\u00e0i li\u1ec7u<\/li>\n<li>Nh\u1eefng g\u00ec m\u1ed9t b\u00e0i ki\u1ec3m tra ACB th\u1ef1c s\u1ef1 bao g\u1ed3m (c\u01a1 kh\u00ed, ETU, c\u00e1ch \u0111i\u1ec7n, \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac)<\/li>\n<li>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong chu\u1ea9n b\u1ecb v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang<\/li>\n<li>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p \u0111\u01b0\u1ee3c tr\u1ea3 l\u1eddi b\u1edfi c\u00e1c k\u1ef9 s\u01b0 th\u1eed nghi\u1ec7m hi\u1ec7n tr\u01b0\u1eddng<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-524\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/06\/How-to-Prepare-for-the-Acb-Test-Effectively.webp\" alt=\"C\u00e1ch chu\u1ea9n b\u1ecb hi\u1ec7u qu\u1ea3 cho b\u00e0i ki\u1ec3m tra Acb\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Ki\u1ec3m tra v\u1eadt l\u00fd tr\u01b0\u1edbc khi th\u1eed nghi\u1ec7m (s\u1eb5n s\u00e0ng c\u01a1 kh\u00ed)<\/h2>\n<p>Tr\u01b0\u1edbc khi k\u1ebft n\u1ed1i b\u1ea5t k\u1ef3 d\u00e2y th\u1eed nghi\u1ec7m n\u00e0o, h\u00e3y th\u1ef1c hi\u1ec7n ki\u1ec3m tra c\u01a1 kh\u00ed k\u1ef9 l\u01b0\u1ee1ng b\u1ed9 ng\u1eaft m\u1ea1ch ACB.<\/p>\n<h3>1 X\u00e1c minh c\u01a1 ch\u1ebf n\u1ea1p l\u00f2 xo<\/h3>\n<p>N\u1ea1p v\u00e0 x\u1ea3 c\u01a1 ch\u1ebf l\u00f2 xo (th\u1ee7 c\u00f4ng qua tay c\u1ea7m n\u1ea1p ho\u1eb7c \u0111\u1ed9ng c\u01a1) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru; quan s\u00e1t xem ACB m\u1edf\/\u0111\u00f3ng ch\u1eafc ch\u1eafn, kh\u00f4ng c\u00f3 ti\u1ebfng k\u00eau hay do d\u1ef1. N\u1ebfu ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ee9ng, kh\u00f4ng ho\u00e0n th\u00e0nh ki\u1ec3m tra \u0111i\u1ec7n v\u00ec b\u1ea1n c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng \u0111\u01a1n v\u1ecb trip. C\u00e1c d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t t\u1ef1 \u0111\u1ed9ng h\u00f3a qu\u00e1 tr\u00ecnh n\u00e0y th\u00f4ng qua c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n, nh\u01b0 nh\u1eefng thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t t\u1ef1 \u0111\u1ed9ng b\u1ed9 ng\u1eaft m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng kh\u00ed (ACB).<\/p>\n<h3>2 Ki\u1ec3m tra ti\u1ebfp \u0111i\u1ec3m v\u00e0 m\u00e1ng h\u1ed3 quang<\/h3>\n<p>M\u1edf b\u1ed9 ng\u1eaft m\u1ea1ch v\u00e0 ki\u1ec3m tra tr\u1ef1c quan c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh. T\u00ecm ki\u1ebfm:<\/p>\n<ul>\n<li>S\u1ef1 \u0111\u1ed5i m\u00e0u ho\u1eb7c \u0103n m\u00f2n (thay th\u1ebf n\u1ebfu nghi\u00eam tr\u1ecdng).<\/li>\n<li>T\u00ecnh tr\u1ea1ng m\u00e1ng h\u1ed3 quang \u2013 kh\u00f4ng c\u00f3 t\u1ea5m n\u1ee9t ho\u1eb7c m\u1ea3nh v\u1ee5n.<\/li>\n<li>Lau v\u00e0 c\u0103n ch\u1ec9nh ti\u1ebfp \u0111i\u1ec3m (so s\u00e1nh v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t).<\/li>\n<\/ul>\n<p>Ghi l\u1ea1i k\u1ebft qu\u1ea3 b\u1eb1ng danh s\u00e1ch ki\u1ec3m tra (ti\u1ebfp \u0111i\u1ec3m s\u1ea1ch\/b\u1ecb h\u1ecfng = \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac cao = k\u1ebft qu\u1ea3 ki\u1ec3m tra kh\u00f4ng ch\u00ednh x\u00e1c).<\/p>\n<h3>3 V\u1ec7 sinh v\u00e0 si\u1ebft ch\u1eb7t \u0111\u1ea7u c\u00e1p<\/h3>\n<p>T\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u c\u00e1p ch\u00ednh n\u00ean \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch b\u1eb1ng c\u1ed3n Isopropyl v\u00e0 kh\u0103n kh\u00f4ng c\u00f3 x\u01a1. C\u00f3 th\u1ec3 b\u00f4i m\u1ed9t l\u1edbp m\u1ecfng m\u1ee1 ti\u1ebfp x\u00fac (t\u00f9y ch\u1ecdn \u2013 nh\u01b0ng s\u1ebd gi\u00fap v\u1edbi c\u00e1c \u0111\u1ea7u c\u00e1p \u0111\u1ed3ng) tr\u01b0\u1edbc khi g\u1eafn d\u00e2y. C\u1ea7n s\u1eed d\u1ee5ng c\u1edd l\u00ea l\u1ef1c \u0111\u00e3 hi\u1ec7u chu\u1ea9n \u0111\u1ec3 si\u1ebft ch\u1eb7t c\u00e1c bu l\u00f4ng \u0111\u1ea7u c\u00e1p theo gi\u00e1 tr\u1ecb l\u1ef1c si\u1ebft \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh tr\u00ean nh\u00e3n ACB (th\u01b0\u1eddng trong kho\u1ea3ng 25-50Nm cho khung 1000-4000A). \u0110i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac s\u1ebd b\u1ecb \u1ea3nh h\u01b0\u1edfng n\u1ebfu l\u1ef1c si\u1ebft bu l\u00f4ng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, t\u1eeb \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh l\u1eb7p l\u1ea1i c\u1ee7a vi\u1ec7c ki\u1ec3m tra.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-525\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/06\/Electrical-test-preparation-primary-and-secondary-circuits.webp\" alt=\"Chu\u1ea9n b\u1ecb ki\u1ec3m tra \u0111i\u1ec7n cho m\u1ea1ch s\u01a1 c\u1ea5p v\u00e0 th\u1ee9 c\u1ea5p\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Chu\u1ea9n b\u1ecb ki\u1ec3m tra \u0111i\u1ec7n (m\u1ea1ch s\u01a1 c\u1ea5p v\u00e0 th\u1ee9 c\u1ea5p)<\/h2>\n<h3>1 Thi\u1ebft l\u1eadp ki\u1ec3m tra ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p<\/h3>\n<p>B\u1ea1n s\u1ebd c\u1ea7n c\u00f3 b\u1ed9 ki\u1ec3m tra ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p c\u00f4ng su\u1ea5t cao \u0111\u1ec3 th\u1ef1c hi\u1ec7n ki\u1ec3m tra ACB \u0111\u1ea7y \u0111\u1ee7, c\u00f3 kh\u1ea3 n\u0103ng ki\u1ec3m tra t\u1eeb 3000 Ampe \u0111\u1ebfn 15.000 Ampe (t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1ecbnh m\u1ee9c c\u1ea7n thi\u1ebft). V\u1ecb tr\u00ed:<\/p>\n<ul>\n<li>C\u00e1p \u0111\u1ed3ng d\u00e0y ph\u00f9 h\u1ee3p v\u1edbi d\u00f2ng ki\u1ec3m tra (tr\u00e1nh s\u1ee5t \u00e1p).<\/li>\n<li>K\u1ebft n\u1ed1i \u0111\u00fang c\u00e1ch v\u1edbi c\u00e1c \u0111\u1ea7u c\u1ef1c d\u00f2ng v\u00e0 t\u1ea3i \u2013 s\u1eed d\u1ee5ng b\u1ed9 chuy\u1ec3n \u0111\u1ed5i thanh c\u00e1i n\u1ebfu c\u1ea7n.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o bi\u1ebfn d\u00f2ng c\u1ee7a b\u1ed9 ki\u1ec3m tra \u0111\u01b0\u1ee3c k\u1eb9p quanh c\u00e1p ch\u00ednh x\u00e1c.<\/li>\n<\/ul>\n<p>C\u1ea7n c\u00f3 d\u00f2ng \u0111\u1ea7y \u0111\u1ee7 khung \u1edf c\u1ea3 hai pha c\u1ee7a ki\u1ec3m tra ti\u00eam s\u01a1 c\u1ea5p \u0111\u1ec3 \u0111o d\u00f2ng ti\u00eau th\u1ee5 h\u1ec7 th\u1ed1ng tr\u00ean to\u00e0n b\u1ed9 s\u1ea3n ph\u1ea9m. Trong giai \u0111o\u1ea1n ti\u00eam th\u1ee9 c\u1ea5p c\u1ee7a ki\u1ec3m tra, m\u1ed9t s\u1ea3n ph\u1ea9m m\u1eabu c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u1edf m\u1ee9c t\u1ed1i \u0111a 20% d\u00f2ng \u0111\u1ecbnh m\u1ee9c b\u00ecnh th\u01b0\u1eddng, nh\u01b0ng ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra theo t\u1ea5t c\u1ea3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p s\u1ea3n xu\u1ea5t OEM c\u00f3 s\u1eb5n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c ti\u1ebfp \u0111i\u1ec3m ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang v\u00e0 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c.<\/p>\n<h3>2 Giao ti\u1ebfp v\u00e0 ngu\u1ed3n \u0111i\u1ec7n ETU (B\u1ed9 ph\u1eadn Trip \u0110i\u1ec7n t\u1eed)<\/h3>\n<p>C\u00e1c ACB hi\u1ec7n t\u1ea1i y\u00eau c\u1ea7u ETU \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n b\u00ean ngo\u00e0i (th\u01b0\u1eddng l\u00e0 24 VDC) \u0111\u1ec3 th\u1ef1c hi\u1ec7n ki\u1ec3m tra. C\u1ea7n cung c\u1ea5p c\u00e1p giao ti\u1ebfp v\u00e0 ph\u1ea7n m\u1ec1m ph\u00f9 h\u1ee3p \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi ETU nh\u1eb1m x\u00e1c minh c\u00e1c c\u00e0i \u0111\u1eb7t Th\u1eddi gian d\u00e0i (LT), Th\u1eddi gian ng\u1eafn (ST), Ngay l\u1eadp t\u1ee9c (I) v\u00e0 L\u1ed7i \u0111\u1ea5t. C\u00e1c b\u0103ng th\u1eed t\u00edch h\u1ee3p (v\u00ed d\u1ee5, trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t t\u1ef1 \u0111\u1ed9ng ACB \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng kh\u00ed) s\u1ebd t\u1ef1 \u0111\u1ed9ng c\u1ea5p ngu\u1ed3n v\u00e0 giao ti\u1ebfp v\u1edbi ETU qua c\u1ed5ng Dock trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t.<\/p>\n<h3>3 D\u00e2y d\u1eabn ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m<\/h3>\n<p>\u0110\u1ea3m b\u1ea3o b\u1ea1n c\u00f3 \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n (megohmmeter) v\u00e0 \u0111\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n tr\u1edf micro (DLRO) s\u1eb5n s\u00e0ng s\u1eed d\u1ee5ng. Khi th\u1ef1c hi\u1ec7n ki\u1ec3m tra c\u00e1ch \u0111i\u1ec7n, h\u00e3y \u0111\u1ea3m b\u1ea3o \u0111\u00e3 ng\u1eaft k\u1ebft n\u1ed1i c\u00e1c th\u00e0nh ph\u1ea7n ETU nh\u1ea1y c\u1ea3m. M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb ki\u1ec3m tra c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, v\u00ec v\u1eady lu\u00f4n ki\u1ec3m tra h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng ACB \u0111\u1ec3 xem ETU c\u1ee7a b\u1ea1n c\u00f3 ch\u1ebf \u0111\u1ed9 \u201cki\u1ec3m tra\u201d c\u00e1ch ly \u0111i\u1ec7n t\u1eed trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra \u0111i\u1ec7n \u00e1p cao hay kh\u00f4ng.<\/p>\n<h2>Chu\u1ea9n b\u1ecb an to\u00e0n v\u00e0 t\u00e0i li\u1ec7u<\/h2>\n<p>Tr\u01b0\u1edbc khi c\u1ea5p ngu\u1ed3n cho b\u1ea5t k\u1ef3 m\u1ea1ch ki\u1ec3m tra n\u00e0o, ho\u00e0n th\u00e0nh c\u00e1c b\u01b0\u1edbc an to\u00e0n sau:<\/p>\n<ul>\n<li>Kh\u00f3a v\u00e0 d\u00e1n nh\u00e3n (LOTO); \u0110\u1ea3m b\u1ea3o c\u00e1ch ly t\u1ea5t c\u1ea3 ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ebfn ACB v\u00e0 \u00e1p d\u1ee5ng thi\u1ebft b\u1ecb Kh\u00f3a v\u00e0 d\u00e1n nh\u00e3n.<\/li>\n<li>R\u00e0o ch\u1eafn v\u00e0 bi\u1ec3n b\u00e1o: \u0110\u1eb7t bi\u1ec3n c\u1ea3nh b\u00e1o v\u00e0 r\u00e0o ch\u1eafn quanh khu v\u1ef1c ki\u1ec3m tra. Do d\u00f2ng \u0111i\u1ec7n cao, b\u1ea5t k\u1ef3 k\u1ebft n\u1ed1i n\u00e0o b\u1ecb l\u1ed7i \u0111\u1ec1u c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra tia h\u1ed3 quang trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra.<\/li>\n<li>K\u1ebf ho\u1ea1ch ki\u1ec3m tra v\u00e0 b\u1ea3ng d\u1eef li\u1ec7u: \u0110\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 ghi l\u1ea1i gi\u00e1 tr\u1ecb d\u1ef1 ki\u1ebfn cho t\u1eebng c\u00e0i \u0111\u1eb7t ETU, v\u00ed d\u1ee5: LT, ST, I v\u00e0 GF, c\u00f9ng v\u1edbi th\u1eddi gian trip \u1edf c\u00e1c m\u1ee9c 2X, 4X, 6X, v.v.<\/li>\n<li>\u0110i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m (\u00b5\u03a9) m\u1ed7i c\u1ef1c (th\u00f4ng th\u01b0\u1eddng &lt;50 \u00b5\u03a9 cho m\u1edbi, &lt;200 \u00b5\u03a9 cho c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng).<\/li>\n<li>\u0110i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n (&gt;100 M\u03a9 \u1edf 1000V).<\/li>\n<li>B\u1ed9 \u0111\u1ebfm v\u1eadn h\u00e0nh c\u01a1 h\u1ecdc (chu k\u1ef3 m\u1edf\/\u0111\u00f3ng).<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-526\" src=\"https:\/\/benlongkj.com\/wp-content\/uploads\/2026\/06\/What-an-ACB-test-actually-includes.webp\" alt=\"B\u00e0i ki\u1ec3m tra ACB th\u1ef1c s\u1ef1 bao g\u1ed3m nh\u1eefng g\u00ec\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Nh\u1eefng g\u00ec ki\u1ec3m tra ACB th\u1ef1c s\u1ef1 bao g\u1ed3m (tr\u00ecnh t\u1ef1 ki\u1ec3m tra)<\/h2>\n<p>M\u1ed9t quy tr\u00ecnh to\u00e0n di\u1ec7n <strong>Ki\u1ec3m tra ACB<\/strong> theo th\u1ee9 t\u1ef1 sau:<\/p>\n<ol>\n<li><span style=\"color: #0000ff;\">Ki\u1ec3m tra v\u1eadn h\u00e0nh c\u01a1 h\u1ecdc<\/span>: 5 chu k\u1ef3 \u0111\u00f3ng\u2011m\u1edf \u1edf \u0111i\u1ec7n \u00e1p \u0111i\u1ec1u khi\u1ec3n \u0111\u1ecbnh m\u1ee9c. \u0110o th\u1eddi gian m\u1edf v\u00e0 \u0111\u00f3ng (mili gi\u00e2y).<\/li>\n<li><span style=\"color: #0000ff;\">Ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m (micro\u2011ohm)<\/span>: \u0110o t\u1eebng c\u1ef1c ri\u00eang bi\u1ec7t \u1edf d\u00f2ng DC 50\u2011100A. Bi\u1ebfn thi\u00ean ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c gi\u1eefa c\u00e1c c\u1ef1c: &lt;10%.<\/li>\n<li><span style=\"color: #0000ff;\">Ki\u1ec3m tra ch\u1ee9c n\u0103ng ETU (ti\u00eam d\u00f2ng th\u1ee9 c\u1ea5p)<\/span>: \u0110\u00e2y l\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n th\u1ea5p h\u01a1n v\u00e0o ETU nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p x\u00e1c minh th\u1eddi gian ng\u1eaft cho c\u00e1c c\u00e0i \u0111\u1eb7t LT, ST, I v\u00e0 GF. Ho\u1ea1t \u0111\u1ed9ng chuy\u1ec3n m\u1ea1ch c\u1ee7a c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m tra.<\/li>\n<li><span style=\"color: #0000ff;\">Ki\u1ec3m tra ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p (t\u00f9y ch\u1ecdn, \u0111\u1ec3 x\u00e1c minh \u0111\u1ea7y \u0111\u1ee7)<\/span>: B\u1eb1ng c\u00e1ch truy\u1ec1n \u201cD\u00f2ng \u0111i\u1ec7n cao\u201d qua b\u1ed9 ng\u1eaft kh\u00f4ng th\u1ec3 m\u1edf, b\u1ea1n c\u00f3 th\u1ec3 x\u00e1c minh r\u1eb1ng t\u1ed5ng c\u01a1 ch\u1ebf ng\u1eaft t\u1eeb c\u1ea3m bi\u1ebfn \u0111\u1ebfn ETU \u0111\u1ebfn c\u01a1 ch\u1ebf s\u1ebd ho\u1ea1t \u0111\u1ed9ng \u1edf m\u1ee9c d\u00f2ng s\u1ef1 c\u1ed1 th\u1ef1c t\u1ebf.<\/li>\n<li><span style=\"color: #0000ff;\">Ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n<\/span>: \u00c1p d\u1ee5ng 1000V DC gi\u1eefa c\u00e1c pha v\u00e0 pha v\u1edbi \u0111\u1ea5t. Ph\u1ea3i &gt;100 M\u03a9.<\/li>\n<li><span style=\"color: #0000ff;\">Ki\u1ec3m tra ch\u1ecbu \u0111i\u1ec7n m\u00f4i (hi-pot)<\/span>: \u00c1p d\u1ee5ng 2500V AC trong 1 ph\u00fat \u2013 kh\u00f4ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ph\u00f3ng \u0111i\u1ec7n.<\/li>\n<\/ol>\n<p>S\u1ea3n xu\u1ea5t tu\u00e2n theo m\u1ed9t lo\u1ea1t c\u00e1c b\u01b0\u1edbc, m\u1ed7i b\u01b0\u1edbc \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng h\u00f3a trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t cho ACB ho\u1eb7c b\u1ed9 ng\u1eaft m\u1ea1ch t\u1ef1 \u0111\u1ed9ng. D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t c\u00f3 kh\u1ea3 n\u0103ng ki\u1ec3m tra t\u1eebng \u0111\u01a1n v\u1ecb v\u00e0 duy tr\u00ec kh\u1ea3 n\u0103ng truy xu\u1ea5t \u0111\u1ea7y \u0111\u1ee7 cho m\u1ed7i \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t.<\/p>\n<h2>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong chu\u1ea9n b\u1ecb v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang<\/h2>\n<ul>\n<li><strong>Sai l\u1ea7m 1: Qu\u00ean n\u1ed1i \u0111\u1ea5t khung ACB.<\/strong> Khi th\u1ef1c hi\u1ec7n ki\u1ec3m tra hi-pot, vi\u1ec7c n\u1ed1i \u0111\u1ea5t khung l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 kh\u00f4ng c\u00f3 \u0111i\u1ec7n \u00e1p r\u00f2 r\u1ec9 c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng ETU c\u1ee7a b\u1ea1n. H\u00e3y \u0111\u1ea3m b\u1ea3o lu\u00f4n k\u1ebft n\u1ed1i d\u00e2y n\u1ed1i \u0111\u1ea5t t\u1eeb gi\u00e1 \u0111\u1ee1 l\u1eafp \u0111\u1eb7t ACB \u0111\u1ebfn h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t c\u1ee7a b\u00e0n th\u1eed nghi\u1ec7m.<\/li>\n<li><strong>Sai l\u1ea7m 2: S\u1eed d\u1ee5ng c\u00e1p th\u1eed c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n quy \u0111\u1ecbnh.<\/strong> S\u1eed d\u1ee5ng c\u00e1p qu\u00e1 nh\u1ecf c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111i\u1ec7n \u00e1p th\u1ea5p do l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua; ch\u00fang c\u0169ng s\u1ebd n\u00f3ng l\u00ean do \u0111\u1eb7c t\u00ednh v\u1eadt l\u00fd. Kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 n\u00e0y b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc d\u00e2y ch\u00ednh x\u00e1c (v\u00ed d\u1ee5, c\u1ea7n 2 d\u00e2y d\u1eabn 95mm\u00b2 cho m\u1ed7i pha n\u1ebfu s\u1eed d\u1ee5ng ngu\u1ed3n 2000A) v\u00e0 gi\u1eef chi\u1ec1u d\u00e0i c\u00e1p c\u00e0ng ng\u1eafn c\u00e0ng t\u1ed1t.<\/li>\n<li><strong>Sai l\u1ea7m 3: Kh\u00f4ng cho b\u1ed9 ng\u1eaft m\u1ea1ch ngu\u1ed9i gi\u1eefa c\u00e1c l\u1ea7n th\u1eed.<\/strong> Sau nhi\u1ec1u chu k\u1ef3 v\u1eadn h\u00e0nh, l\u00f2 xo v\u00e0 ti\u1ebfp \u0111i\u1ec3m s\u1ebd sinh nhi\u1ec7t. \u0110\u1ec3 tr\u00e1nh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m; sau khi ho\u00e0n th\u00e0nh ki\u1ec3m tra ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p, h\u00e3y ch\u1edd 10 ph\u00fat tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n th\u00eam ki\u1ec3m tra d\u00f2ng \u0111\u1ea7y \u0111\u1ee7 m\u1ed7i l\u1ea7n.<\/li>\n<li><strong>Sai l\u1ea7m 4: B\u1ecf qua pin ETU.<\/strong> T\u1ea5t c\u1ea3 ETU c\u1ea7n c\u00f3 pin n\u1ed9i b\u1ed9 \u0111\u1ec3 ghi l\u1ea1i s\u1ef1 ki\u1ec7n. N\u1ebfu pin h\u1ebft, gi\u00e1 tr\u1ecb ng\u1eaft c\u00f3 th\u1ec3 kh\u00f4ng ch\u00ednh x\u00e1c. Gi\u1ea3i ph\u00e1p: \u0110\u1ea3m b\u1ea3o ki\u1ec3m tra \u0111i\u1ec7n \u00e1p pin tr\u00ean thi\u1ebft b\u1ecb tr\u01b0\u1edbc khi kh\u1edfi \u0111\u1ed9ng. N\u1ebfu th\u1ea5p h\u01a1n th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t, h\u00e3y thay th\u1ebf.<\/li>\n<\/ul>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n<h3>Ki\u1ec3m tra ACB l\u00e0 g\u00ec?<\/h3>\n<p><strong>Ki\u1ec3m tra ACB<\/strong> M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c ki\u1ec3m tra l\u00e0 x\u00e1c nh\u1eadn kh\u00f4ng c\u00f3 l\u1ed7i trong b\u1ed9 ng\u1eaft m\u1ea1ch kh\u00f4ng kh\u00ed (b\u1ed9 ng\u1eaft \u0111i\u1ec7n \u00e1p th\u1ea5p th\u01b0\u1eddng c\u00f3 \u0111\u1ecbnh m\u1ee9c t\u1eeb 800 A \u0111\u1ebfn 6300 A). C\u00e1c b\u00e0i ki\u1ec3m tra th\u1ef1c hi\u1ec7n s\u1ebd bao g\u1ed3m:<br \/>\n\u2013 Ki\u1ec3m tra v\u1eadn h\u00e0nh c\u01a1 h\u1ecdc bao g\u1ed3m th\u1eddi gian \u0111\u00f3ng m\u1edf v\u00e0 n\u1ea1p l\u00f2 xo<br \/>\n\u2013 X\u00e1c minh c\u00e1c ti\u1ebfp \u0111i\u1ec3m v\u00e0 so s\u00e1nh v\u1edbi IEC 60947-2, UL 489 ho\u1eb7c NEMA AB-4 bao g\u1ed3m \u0111o \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m (micro-ohm)<br \/>\n\u2013 Ki\u1ec3m tra ch\u1ee9c n\u0103ng c\u1ee7a b\u1ed9 ph\u1eadn ng\u1eaft \u0111i\u1ec7n t\u1eed (ETU) s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch ti\u00eam t\u00edn hi\u1ec7u \u0111\u1ec3 x\u00e1c minh \u0111\u01b0\u1eddng cong b\u1ea3o v\u1ec7 L-S-I-G<br \/>\n\u2013 H\u1ec7 th\u1ed1ng ng\u1eaft ho\u00e0n ch\u1ec9nh s\u1ebd \u0111\u01b0\u1ee3c ki\u1ec3m tra b\u1eb1ng c\u00e1ch ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p \u1edf m\u1ee9c d\u00f2ng s\u1ef1 c\u1ed1 th\u1ef1c t\u1ebf<br \/>\n\u2013 X\u00e1c minh \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n<br \/>\n\u2013 Ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa ki\u1ec3m tra ACB s\u01a1 c\u1ea5p v\u00e0 th\u1ee9 c\u1ea5p l\u00e0 g\u00ec?<\/h3>\n<p>Ki\u1ec3m tra ACB th\u1ee9 c\u1ea5p ti\u00eam t\u00edn hi\u1ec7u d\u00f2ng \u0111i\u1ec7n th\u1ea5p v\u00e0o b\u1ed9 ph\u1eadn trip \u0111i\u1ec7n t\u1eed (ETU) \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c m\u1ea1ch c\u1ea3m bi\u1ebfn v\u00e0 logic ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c; tuy nhi\u00ean, n\u00f3 kh\u00f4ng \u0111\u00e1nh gi\u00e1 c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh ho\u1eb7c c\u1ea3m bi\u1ebfn d\u00f2ng \u0111i\u1ec7n. Ki\u1ec3m tra ACB s\u01a1 c\u1ea5p s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n cao ti\u00eam qua to\u00e0n b\u1ed9 b\u1ed9 ng\u1eaft m\u1ea1ch, t\u1eeb c\u00e1c \u0111\u1ea7u d\u00e2y d\u00f2ng v\u00e0 t\u1ea3i, qua c\u00e1c c\u1ea3m bi\u1ebfn d\u00f2ng \u0111i\u1ec7n, qua ETU v\u00e0 qua c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1eb7c t\u00ednh m\u1ea1ch cho th\u1eddi gian trip \u1edf m\u1ee9c d\u00f2ng s\u1ef1 c\u1ed1 th\u1ef1c t\u1ebf b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ti\u1ec1m n\u0103ng c\u1ee7a ACB. Trong khi ki\u1ec3m tra s\u01a1 c\u1ea5p cung c\u1ea5p \u0111\u00e1nh gi\u00e1 s\u00e2u h\u01a1n v\u00ec n\u00f3 \u0111\u00f2i h\u1ecfi nhi\u1ec1u c\u00f4ng s\u1ee9c h\u01a1n cho thi\u1ebft b\u1ecb v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh, ph\u1ea7n l\u1edbn c\u00e1c ki\u1ec3m tra b\u1ea3o tr\u00ec hi\u1ec7n tr\u01b0\u1eddng th\u01b0\u1eddng l\u00e0 ki\u1ec3m tra th\u1ee9 c\u1ea5p, trong khi h\u1ea7u h\u1ebft c\u00e1c d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 h\u00ecnh th\u1ee9c ki\u1ec3m tra s\u01a1 c\u1ea5p theo m\u1eabu.<\/p>\n<h3>Ki\u1ec3m tra ACB n\u00ean \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n bao l\u00e2u m\u1ed9t l\u1ea7n?<\/h3>\n<p>Ti\u00eau chu\u1ea9n NEMA AB-4 v\u00e0 IEEE khuy\u1ebfn ngh\u1ecb ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 ACB \u0111i\u1ec7n \u00e1p th\u1ea5p t\u1eeb m\u1ed9t \u0111\u1ebfn ba n\u0103m m\u1ed9t l\u1ea7n, d\u1ef1a tr\u00ean m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh (v\u00e0\/ho\u1eb7c m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng). N\u1ebfu ACB \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t (nhi\u1ec1u b\u1ee5i, v\u00e0\/ho\u1eb7c \u0111\u1ed9 \u1ea9m cao, v\u00e0\/ho\u1eb7c c\u00f3 c\u00e1c s\u1ef1 c\u1ed1 ng\u1eaft m\u1ea1ch th\u01b0\u1eddng xuy\u00ean), th\u00ec n\u00ean ki\u1ec3m tra h\u00e0ng n\u0103m. \u0110\u1ed1i v\u1edbi ACB \u0111\u1eb7t t\u1ea1i c\u00e1c c\u01a1 s\u1edf quan tr\u1ecdng nh\u01b0 b\u1ec7nh vi\u1ec7n ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u, nhi\u1ec1u nh\u00e0 v\u1eadn h\u00e0nh ki\u1ec3m tra ACB m\u1ed7i s\u00e1u \u0111\u1ebfn m\u01b0\u1eddi hai th\u00e1ng. Vi\u1ec7c ki\u1ec3m tra ACB sau b\u1ea5t k\u1ef3 s\u1ef1 c\u1ed1 ng\u1eaft m\u1ea1ch ho\u1eb7c s\u1eeda ch\u1eefa n\u00e0o l\u00e0 r\u1ea5t quan tr\u1ecdng.<\/p>\n<h3>Thi\u1ebft b\u1ecb c\u1ea7n thi\u1ebft cho ki\u1ec3m tra ACB l\u00e0 g\u00ec?<\/h3>\n<p>Thi\u1ebft b\u1ecb c\u1ea7n thi\u1ebft cho m\u1ed9t ki\u1ec3m tra to\u00e0n di\u1ec7n <strong>Ki\u1ec3m tra ACB<\/strong>:<\/p>\n<ul>\n<li>B\u1ed9 ki\u1ec3m tra ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p (c\u00f3 kh\u1ea3 n\u0103ng &gt;10kA)<\/li>\n<li>\u0110\u1ed3ng h\u1ed3 micro-ohm (DLRO) \u0111\u1ec3 \u0111o \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m<\/li>\n<li>\u0110\u1ed3ng h\u1ed3 megohm (thi\u1ebft b\u1ecb ki\u1ec3m tra c\u00e1ch \u0111i\u1ec7n) \u2013 ph\u1ea1m vi 1000V\/2500V<\/li>\n<li>B\u1ed9 kit giao ti\u1ebfp ETU (c\u00e1p + ph\u1ea7n m\u1ec1m \u0111\u1eb7c th\u00f9 cho th\u01b0\u01a1ng hi\u1ec7u ACB, v\u00ed d\u1ee5: Micrologic, Digitrip)<\/li>\n<li>B\u1ed9 k\u00edch ho\u1ea1t n\u1ea1p l\u00f2 xo (cho ACB th\u1ee7 c\u00f4ng) ho\u1eb7c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1<\/li>\n<li>\u0110\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng k\u1ef9 thu\u1eadt s\u1ed1 v\u00e0 \u0111\u1ed3ng h\u1ed3 \u0111o g\u00f3c pha<\/li>\n<\/ul>\n<p>C\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p th\u00e0nh m\u1ed9t h\u1ec7 th\u1ed1ng ki\u1ec3m tra t\u1ef1 \u0111\u1ed9ng ho\u00e0n ch\u1ec9nh cho ki\u1ec3m tra s\u1ea3n xu\u1ea5t. \u0110\u1ed1i v\u1edbi c\u00e1c ki\u1ec3m tra lo\u1ea1i hi\u1ec7n tr\u01b0\u1eddng, ch\u00fang s\u1ebd l\u00e0 c\u00e1c thi\u1ebft b\u1ecb c\u1ea7m tay ri\u00eang bi\u1ec7t.<\/p>\n<p>Chu\u1ea9n b\u1ecb cho b\u00e0i ki\u1ec3m tra ACB (M\u00e1y c\u1eaft m\u1ea1ch kh\u00f4ng kh\u00ed) quan tr\u1ecdng kh\u00f4ng k\u00e9m g\u00ec vi\u1ec7c th\u1ef1c hi\u1ec7n b\u00e0i ki\u1ec3m tra \u0111\u00f3. B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean trong qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb l\u00e0 ki\u1ec3m tra v\u1eadt l\u00fd c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a ACB n\u00e0y: c\u01a1 ch\u1ebf l\u00f2 xo, ti\u1ebfp \u0111i\u1ec3m v\u00e0 \u0111\u1ea7u n\u1ed1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ed7i b\u1ed9 ph\u1eadn ho\u1ea1t \u0111\u1ed9ng c\u01a1 h\u1ecdc t\u1ed1t. B\u01b0\u1edbc ti\u1ebfp theo trong qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb l\u00e0 thi\u1ebft l\u1eadp h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a b\u1ea1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1p c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p, giao ti\u1ebfp \u0111\u00fang c\u00e1ch v\u1edbi ETU (\u0110\u01a1n v\u1ecb ki\u1ec3m tra \u0111i\u1ec7n) v\u00e0 s\u1eed d\u1ee5ng c\u00e1c thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n. Khi b\u1ea1n chu\u1ea9n b\u1ecb m\u1ed9t k\u1ebf ho\u1ea1ch ki\u1ec3m tra th\u00e0nh c\u00f4ng, b\u1ea1n n\u00ean bao g\u1ed3m c\u00e1c gi\u00e1 tr\u1ecb \u201cd\u1ef1 ki\u1ebfn\u201d cho t\u1eebng l\u0129nh v\u1ef1c sau: \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111i\u1ec3m, \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u00e0 th\u1eddi gian ng\u1eaft m\u1ea1ch. C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh khi chu\u1ea9n b\u1ecb bao g\u1ed3m s\u1eed d\u1ee5ng c\u00e1p c\u00f3 k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n y\u00eau c\u1ea7u, b\u1ecf qua th\u1eddi gian l\u00e0m m\u00e1t sau khi th\u1ef1c hi\u1ec7n ki\u1ec3m tra tr\u00ean c\u00e1c m\u1ea1ch \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 kh\u00f4ng n\u1ed1i \u0111\u1ea5t \u0111\u00fang c\u00e1ch khung ACB. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng s\u1ea3n xu\u1ea5t v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn, m\u1ed9t h\u1ec7 th\u1ed1ng t\u00edch h\u1ee3p <a title=\"D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t t\u1ef1 \u0111\u1ed9ng ACB\" href=\"https:\/\/benlongkj.com\/vi\/air-operated-circuit-breaker-acb-automatic-production-line-product\/\"><strong>D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t t\u1ef1 \u0111\u1ed9ng ACB<\/strong><\/a> c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng h\u00f3a to\u00e0n b\u1ed9 vi\u1ec7c x\u1eed l\u00fd c\u01a1 h\u1ecdc c\u1ee7a ACB c\u0169ng nh\u01b0 cung c\u1ea5p giao ti\u1ebfp v\u1edbi ETU v\u00e0 ghi nh\u1eadn d\u1eef li\u1ec7u \u0111\u1ea7y \u0111\u1ee7 \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng 100% ACB s\u1ebd tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ti\u00eau chu\u1ea9n IEC 60947-2. N\u1ebfu b\u1ea1n \u0111ang th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng ho\u1eb7c ki\u1ec3m tra ch\u1ea5p nh\u1eadn t\u1ea1i nh\u00e0 m\u00e1y, vi\u1ec7c tu\u00e2n theo h\u01b0\u1edbng d\u1eabn chu\u1ea9n b\u1ecb n\u00e0y s\u1ebd gi\u1ea3m thi\u1ec3u th\u1eddi gian c\u1ea7n thi\u1ebft \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra, ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb v\u00e0 cung c\u1ea5p k\u1ebft qu\u1ea3 ki\u1ec3m tra ch\u00ednh x\u00e1c.<\/p>","protected":false},"excerpt":{"rendered":"<p>Real production delay: &#8220;We arranged a complete ACB test for our 4,000-amp main breaker over a weekend in a shut down. Unfortunately, we ran out of time to inspect the ETU comm interface cable and the mechanical fixture to install the energy storage type of mechanism was lost. The test was delayed two weeks and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":524,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-523","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\/523","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/comments?post=523"}],"version-history":[{"count":1,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/523\/revisions"}],"predecessor-version":[{"id":527,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/posts\/523\/revisions\/527"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media\/524"}],"wp:attachment":[{"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/media?parent=523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/categories?post=523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benlongkj.com\/vi\/wp-json\/wp\/v2\/tags?post=523"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}