{"id":2269,"date":"2026-09-03T09:31:30","date_gmt":"2026-09-03T09:31:30","guid":{"rendered":"https:\/\/www.haiyanele.com\/?p=2269"},"modified":"2026-10-09T02:59:34","modified_gmt":"2026-10-09T02:59:34","slug":"circuit-breaker-distribution-block-guide","status":"publish","type":"post","link":"https:\/\/www.haiyanele.com\/vi\/blog\/terminal-block\/circuit-breaker-distribution-block-guide\/","title":{"rendered":"Kh\u1ed1i ph\u00e2n ph\u1ed1i c\u1ea7u dao: C\u00e1c lo\u1ea1i, c\u00e1ch \u0111\u1ea5u d\u00e2y v\u00e0 h\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn"},"content":{"rendered":"

Tr\u1ea3 l\u1eddi nhanh<\/strong><\/h2>\n\n\n\n

M\u1ed9t kh\u1ed1i \u0111\u1ea7u cu\u1ed1i c\u1ea7u dao ph\u00e2n ph\u1ed1i m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ea7u v\u00e0o th\u00e0nh nhi\u1ec1u m\u1ea1ch \u0111\u1ea7u ra th\u00f4ng qua lo\u1ea1i ch\u00e2n<\/a>, lo\u1ea1i ch\u00e2n v\u00e0 d\u00e2y d\u1eabn, ho\u1eb7c c\u1ea5u h\u00ecnh \u0111a \u0111\u1ea7u ra. Vi\u1ec7c \u0111\u1ea5u d\u00e2y \u0111\u00f2i h\u1ecfi c\u00e1c \u0111\u1ea7u n\u1ed1i ch\u1eafc ch\u1eafn v\u00e0 k\u1ebft n\u1ed1i nh\u00e1nh ch\u00ednh x\u00e1c, trong khi vi\u1ec7c l\u1ef1a ch\u1ecdn b\u1eaft \u0111\u1ea7u b\u1eb1ng giao di\u1ec7n c\u1ea7u dao v\u00e0 k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn \u0111\u1ea7u v\u00e0o, sau \u0111\u00f3 l\u00e0 s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u ra, \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n, ph\u1ea1m vi d\u00e2y d\u1eabn, kh\u00f4ng gian l\u1eafp \u0111\u1eb7t v\u00e0 ph\u01b0\u01a1ng ph\u00e1p k\u1ebft n\u1ed1i.<\/p>\n\n\n\n

Haiyan s\u1ea3n xu\u1ea5t nhi\u1ec1u lo\u1ea1i c\u1ea7u dao kh\u1ed1i \u0111\u1ea5u cu\u1ed1i ph\u00e2n ph\u1ed1i<\/a> \u0111\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u00e1p th\u1ea5p, c\u1ea3 lo\u1ea1i ch\u00e2n v\u00e0 k\u1ebft n\u1ed1i k\u00e9p. D\u00f2ng FJ6\/158 c\u00f3 k\u1ebft n\u1ed1i c\u1ea7u dao tr\u1ef1c ti\u1ebfp v\u00e0 nhi\u1ec1u \u0111\u1ea7u ra, trong c\u00e1c thi\u1ebft l\u1eadp kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o ph\u1ea1m vi d\u00e2y d\u1eabn v\u00e0 thi\u1ebft l\u1eadp c\u1ea7u dao.<\/p>\n\n\n\n

Kh\u1ed1i ph\u00e2n ph\u1ed1i c\u1ea7u dao l\u00e0 g\u00ec?<\/strong><\/h2>\n\n\n\n

M\u1ed9t kh\u1ed1i \u0111\u1ea7u cu\u1ed1i c\u1ea7u dao ch\u1ea5p nh\u1eadn m\u1ed9t d\u00e2y d\u1eabn, chia n\u00f3 th\u00e0nh nhi\u1ec1u d\u00e2y d\u1eabn \u0111\u1ec3 k\u1ebft n\u1ed1i v\u1edbi c\u00e1c c\u1ea7u dao t\u01b0\u01a1ng \u1ee9ng. N\u00f3 cung c\u1ea5p m\u1ed9t \u0111i\u1ec3m k\u1ebft n\u1ed1i chung \u0111\u1ed3ng th\u1eddi gi\u1eef cho c\u00e1c d\u00e2y d\u1eabn nh\u00e1nh \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp h\u1ee3p l\u00fd trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p v\u00e0 b\u1ea3o tr\u00ec b\u1ea3ng \u0111i\u1ec7n. \u0110i\u1ec1u n\u00e0y gi\u00fap ph\u00e2n ph\u1ed1i m\u1ea1ch d\u1ec5 d\u00e0ng v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 nh\u1ea7m l\u1eabn trong \u0111\u1ea5u d\u00e2y khi th\u1ef1c hi\u1ec7n k\u1ebft n\u1ed1i nh\u00e1nh.<\/p>\n\n\n\n

Kh\u1ed1i ph\u00e2n ph\u1ed1i c\u1ea7u dao ch\u1ecbu tr\u00e1ch nhi\u1ec7m ph\u00e2n ph\u1ed1i \u0111i\u1ec7n, trong khi c\u1ea7u dao cung c\u1ea5p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng, kh\u00f4ng c\u00e1i n\u00e0o thay th\u1ebf cho c\u00e1i n\u00e0o.<\/p>\n\n\n\n

C\u00e1c lo\u1ea1i kh\u1ed1i ph\u00e2n ph\u1ed1i c\u1ea7u dao ch\u00ednh<\/strong><\/h2>\n\n\n\n

C\u00e1c lo\u1ea1i ch\u00ednh l\u00e0 kh\u1ed1i ph\u00e2n ph\u1ed1i lo\u1ea1i ch\u00e2n, lo\u1ea1i ch\u00e2n v\u00e0 d\u00e2y d\u1eabn, v\u00e0 \u0111a \u0111\u1ea7u ra, v\u1edbi c\u00e1ch b\u1ed1 tr\u00ed k\u1ebft n\u1ed1i v\u00e0 c\u1ea5u h\u00ecnh \u0111\u1ea7u ra x\u00e1c \u0111\u1ecbnh n\u01a1i m\u1ed7i thi\u1ebft k\u1ebf ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n\n\n

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\"So<\/figure>\n<\/div>\n\n\n
Lo\u1ea1i \/ C\u1ea5u h\u00ecnh<\/strong><\/th>C\u00e1ch b\u1ed1 tr\u00ed k\u1ebft n\u1ed1i<\/strong><\/th>L\u1ee3i th\u1ebf ph\u00f9 h\u1ee3p nh\u1ea5t<\/strong><\/th><\/tr><\/thead>
Lo\u1ea1i ch\u00e2n<\/td>\u0110\u1ea7u v\u00e0o ch\u00e2n k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c c\u1ea7u dao t\u01b0\u01a1ng th\u00edch<\/td>T\u00edch h\u1ee3p c\u1ea7u dao nh\u1ecf g\u1ecdn<\/td><\/tr>
Lo\u1ea1i ch\u00e2n v\u00e0 d\u00e2y d\u1eabn<\/td>\u0110\u1ea7u v\u00e0o ch\u00e2n c\u1ed9ng v\u1edbi k\u1ebft n\u1ed1i d\u00e2y d\u1eabn tr\u1ef1c ti\u1ebfp<\/td>\u0110\u1ecbnh tuy\u1ebfn b\u1ea3ng linh ho\u1ea1t<\/td><\/tr>
\u0110a \u0111\u1ea7u ra<\/td>M\u1ed9t \u0111\u1ea7u v\u00e0o v\u1edbi nhi\u1ec1u \u0111\u1ea7u ra nh\u00e1nh<\/td>Ph\u00e2n ph\u1ed1i \u0111a m\u1ea1ch hi\u1ec7u qu\u1ea3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Thi\u1ebft k\u1ebf lo\u1ea1i ch\u00e2n ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c c\u00e0i \u0111\u1eb7t m\u00e0 vi\u1ec7c k\u1ebft n\u1ed1i c\u1ea7u dao tr\u1ef1c ti\u1ebfp l\u00e0 \u01b0u ti\u00ean. D\u00f2ng FJ6\/158 TYPE100 c\u1ee7a HAIYAN<\/a> s\u1eed d\u1ee5ng \u0111\u1ea7u v\u00e0o lo\u1ea1i ch\u00e2n v\u00e0 c\u00f3 s\u1eb5n trong c\u00e1c c\u1ea5u h\u00ecnh hai, ba, b\u1ed1n, s\u00e1u, t\u00e1m v\u00e0 ch\u00edn \u0111\u1ea7u ra, v\u1edbi ph\u1ea1m vi d\u00e2y d\u1eabn \u0111\u1ea7u ra \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh l\u00e0 1,5\u201316 mm\u00b2 ho\u1eb7c 1,5\u201310 mm\u00b2 t\u00f9y thu\u1ed9c v\u00e0o m\u1eabu.<\/p>\n\n\n\n

Kh\u1ed1i ph\u00e2n ph\u1ed1i lo\u1ea1i ch\u00e2n so v\u1edbi lo\u1ea1i ch\u00e2n v\u00e0 d\u00e2y d\u1eabn<\/strong><\/h2>\n\n\n\n

C\u00e1c kh\u1ed1i lo\u1ea1i ch\u00e2n h\u1eefu \u00edch khi giao di\u1ec7n c\u1ea7u dao v\u00e0 b\u1ed1 c\u1ee5c t\u1ee7 h\u1ed7 tr\u1ee3 k\u1ebft n\u1ed1i ch\u00e2n tr\u1ef1c ti\u1ebfp. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf d\u00e2y d\u1eabn chuy\u1ec3n ti\u1ebfp, nh\u01b0ng giao di\u1ec7n c\u1ea7u dao v\u00e0 ph\u1ea1m vi d\u00e2y d\u1eabn ph\u1ea3i kh\u1edbp.<\/p>\n\n\n\n

Thi\u1ebft k\u1ebf lo\u1ea1i ch\u00e2n v\u00e0 d\u00e2y d\u1eabn b\u1ed5 sung k\u1ebft n\u1ed1i d\u00e2y d\u1eabn tr\u1ef1c ti\u1ebfp b\u00ean c\u1ea1nh giao di\u1ec7n ch\u00e2n. V\u00ed d\u1ee5, d\u00f2ng FJ6G-250\/16-50 c\u1ee7a HYJXH FJ6G-250\/16-50 <\/a>h\u1ed7 tr\u1ee3 c\u1ea3 hai ph\u01b0\u01a1ng ph\u00e1p k\u1ebft n\u1ed1i v\u00e0 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c c\u1ea7u dao lo\u1ea1i 160, lo\u1ea1i 225 v\u00e0 lo\u1ea1i 250 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh, mang l\u1ea1i cho ng\u01b0\u1eddi l\u1eafp r\u00e1p b\u1ea3ng \u0111i\u1ec7n s\u1ef1 linh ho\u1ea1t h\u01a1n khi \u0111\u1ecbnh tuy\u1ebfn c\u00e1c d\u00e2y d\u1eabn \u0111\u1ea7u v\u00e0o l\u1edbn h\u01a1n.<\/p>\n\n\n\n

C\u00e1ch \u0111\u1ea5u d\u00e2y kh\u1ed1i ph\u00e2n ph\u1ed1i c\u1ea7u dao<\/strong><\/h2>\n\n\n\n

B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch c\u00f4 l\u1eadp m\u1ea1ch v\u00e0 x\u00e1c nh\u1eadn s\u01a1 \u0111\u1ed3 \u0111\u1ea5u d\u00e2y, b\u1ed1 tr\u00ed c\u1ea7u dao, k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn v\u00e0 \u0111\u1ecbnh m\u1ee9c s\u1ea3n ph\u1ea9m. L\u1eafp \u0111\u1eb7t kh\u1ed1i ch\u1eafc ch\u1eafn, k\u1ebft n\u1ed1i d\u00e2y d\u1eabn \u0111\u1ea7u v\u00e0o b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh, sau \u0111\u00f3 \u0111\u1ecbnh tuy\u1ebfn m\u1ed7i \u0111\u1ea7u ra \u0111\u1ebfn c\u1ea7u dao ho\u1eb7c m\u1ea1ch nh\u00e1nh \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh c\u1ee7a n\u00f3.<\/p>\n\n\n\n

Tr\u01b0\u1edbc khi c\u1ea5p \u0111i\u1ec7n, h\u00e3y x\u00e1c minh \u0111\u1ea7u n\u1ed1i d\u00e2y d\u1eabn, c\u1ef1c t\u00ednh (n\u1ebfu c\u00f3), \u0111\u1ed9 ch\u1eafc ch\u1eafn c\u1ee7a k\u1ebft n\u1ed1i, kho\u1ea3ng c\u00e1ch v\u00e0 nh\u1eadn d\u1ea1ng. M\u1ed9t l\u1ed7i ph\u1ed5 bi\u1ebfn t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng l\u00e0 coi t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u ra l\u00e0 c\u00f3 th\u1ec3 thay th\u1ebf cho nhau; m\u1ed7i nh\u00e1nh ph\u1ea3i n\u1eb1m trong gi\u1edbi h\u1ea1n d\u00e2y d\u1eabn v\u00e0 d\u00f2ng \u0111i\u1ec7n \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh c\u1ee7a n\u00f3.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng \u0111i\u1ec7n m\u1eadt \u0111\u1ed9 cao, kh\u1ed1i ph\u00e2n ph\u1ed1i MCB c\u00f3 th\u1ec3 r\u00fat ng\u1eafn \u0111\u1ecbnh tuy\u1ebfn v\u00e0 gi\u1ea3m c\u00e1c \u0111i\u1ec3m k\u1ebft n\u1ed1i. N\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c thay th\u1ebf thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 c\u1ea5u h\u00ecnh \u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t ch\u1ec9 \u0111\u1ecbnh.<\/p>\n\n\n\n

C\u00e1ch ch\u1ecdn kh\u1ed1i ph\u00e2n ph\u1ed1i c\u1ea7u dao ph\u00f9 h\u1ee3p<\/strong><\/h2>\n\n\n\n

Ch\u1ecdn kh\u1ed1i b\u1eb1ng c\u00e1ch tr\u01b0\u1edbc ti\u00ean kh\u1edbp giao di\u1ec7n c\u1ea7u dao v\u00e0 k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn \u0111\u1ea7u v\u00e0o, sau \u0111\u00f3 x\u00e1c minh s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u ra c\u1ea7n thi\u1ebft, d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c, ph\u1ea1m vi d\u00e2y d\u1eabn \u0111\u1ea7u ra, kh\u00f4ng gian l\u1eafp \u0111\u1eb7t v\u00e0 ph\u01b0\u01a1ng ph\u00e1p k\u1ebft n\u1ed1i so v\u1edbi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n

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\"H\u01b0\u1edbng<\/figure>\n<\/div>\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng b\u1ea3ng ph\u00e2n ph\u1ed1i trong ph\u1ea1m vi c\u1ee7a n\u00f3, IEC 61439-3:2024 cung c\u1ea5p c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 cho c\u00e1c b\u1ea3ng ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u00e1p th\u1ea5p d\u00e0nh cho ng\u01b0\u1eddi kh\u00f4ng chuy\u00ean v\u1eadn h\u00e0nh. \u0110\u00e2y l\u00e0 m\u1ed9t ti\u00eau chu\u1ea9n l\u1eafp r\u00e1p, v\u00ec v\u1eady c\u00e1c y\u00eau c\u1ea7u \u00e1p d\u1ee5ng cho b\u1ea3ng \u0111i\u1ec7n ho\u00e0n ch\u1ec9nh v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t v\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng v\u00e0 c\u1ea5u h\u00ecnh th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

\u0110\u1ec3 mua h\u00e0ng, h\u00e3y so s\u00e1nh:<\/p>\n\n\n\n

Y\u1ebfu t\u1ed1 l\u1ef1a ch\u1ecdn<\/strong><\/td>Nh\u1eefng g\u00ec c\u1ea7n x\u00e1c minh<\/strong><\/td><\/tr>
Giao di\u1ec7n c\u1ea7u dao<\/td>X\u00e1c nh\u1eadn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi lo\u1ea1i c\u1ea7u dao d\u1ef1 \u0111\u1ecbnh<\/td><\/tr>
D\u00e2y d\u1eabn \u0111\u1ea7u v\u00e0o<\/td>X\u00e1c minh k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn v\u00e0 ph\u01b0\u01a1ng ph\u00e1p k\u1ebft n\u1ed1i<\/td><\/tr>
\u0110\u1ea7u ra<\/td>Kh\u1edbp s\u1ed1 l\u01b0\u1ee3ng nh\u00e1nh v\u00e0 ph\u1ea1m vi d\u00e2y d\u1eabn<\/td><\/tr>
\u0110\u1ecbnh m\u1ee9c \u0111i\u1ec7n<\/td>X\u00e1c minh d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c<\/td><\/tr>
L\u1eafp \u0111\u1eb7t<\/td>Ki\u1ec3m tra k\u00edch th\u01b0\u1edbc, c\u00e1ch l\u1eafp \u0111\u1eb7t v\u00e0 kh\u00f4ng gian t\u1ee7<\/td><\/tr>
T\u00e0i li\u1ec7u<\/td>X\u00e1c minh c\u00e1c t\u00e0i li\u1ec7u ki\u1ec3m tra\/ch\u1ee9ng nh\u1eadn c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

M\u1ed9t kh\u1ed1i \u0111\u1ea5u cu\u1ed1i c\u1ea7u dao ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean thi\u1ebft k\u1ebf b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ho\u00e0n ch\u1ec9nh, kh\u00f4ng ch\u1ec9 d\u1ef1a tr\u00ean \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n danh \u0111\u1ecbnh c\u1ee7a n\u00f3. M\u1ed9t b\u1ed9 ph\u1eadn t\u01b0\u01a1ng th\u00edch v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u1eabn c\u00f3 th\u1ec3 kh\u00f4ng ph\u00f9 h\u1ee3p n\u1ebfu ph\u1ea1m vi d\u00e2y d\u1eabn, giao di\u1ec7n c\u1ea7u dao, kho\u1ea3ng c\u00e1ch ho\u1eb7c m\u00f4i tr\u01b0\u1eddng kh\u00f4ng kh\u1edbp.<\/p>\n\n\n\n

C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ed5 bi\u1ebfn v\u00e0 l\u1ed7i l\u1eafp \u0111\u1eb7t<\/strong><\/h2>\n\n\n\n

C\u00e1c kh\u1ed1i n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi b\u1ea3ng ph\u00e2n ph\u1ed1i, t\u1ee7 \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p, v\u1ecf ph\u00e2n ph\u1ed1i \u0111i\u1ec7n v\u00e0 c\u00e1c c\u1ee5m \u0111i\u1ec7n \u00e1p th\u1ea5p kh\u00e1c n\u01a1i m\u1ed9t ngu\u1ed3n c\u1ea5p cho nhi\u1ec1u m\u1ea1ch \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7. Hai An li\u1ec7t k\u00ea c\u00e1c s\u1ea3n ph\u1ea9m n\u00e0y cho c\u00e1c \u1ee9ng d\u1ee5ng b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n giao ti\u1ebfp tr\u1ef1c ti\u1ebfp v\u1edbi c\u1ea7u dao.<\/p>\n\n\n\n

C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn bao g\u1ed3m ch\u1ecdn m\u1ed9t kh\u1ed1i tr\u01b0\u1edbc khi x\u00e1c nh\u1eadn kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a c\u1ea7u dao, v\u01b0\u1ee3t qu\u00e1 ph\u1ea1m vi d\u00e2y d\u1eabn \u0111\u1ea7u ra, k\u1ebft n\u1ed1i kh\u00f4ng ch\u1eafc ch\u1eafn v\u00e0 b\u1ecf qua kh\u00f4ng gian t\u1ee7. Trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh, h\u00e3y ki\u1ec3m tra t\u1eebng nh\u00e1nh thay v\u00ec ch\u1ec9 ki\u1ec3m tra k\u1ebft n\u1ed1i \u0111\u1ea7u v\u00e0o; m\u1ed9t \u0111\u1ea7u cu\u1ed1i \u0111\u1ea7u ra k\u00e9m c\u00f3 th\u1ec3 t\u1ea1o ra nhi\u1ec7t c\u1ee5c b\u1ed9 ho\u1eb7c m\u1ea1ch kh\u00f4ng li\u00ean t\u1ee5c.<\/p>\n\n\n\n