{"id":2513,"date":"2021-12-15T07:51:26","date_gmt":"2021-12-15T00:51:26","guid":{"rendered":"https:\/\/bestray.com\/blog\/?p=2513"},"modified":"2024-02-27T16:36:21","modified_gmt":"2024-02-27T09:36:21","slug":"noi-dat-la-gi","status":"publish","type":"post","link":"https:\/\/bestray.com\/blog\/noi-dat-la-gi\/","title":{"rendered":"N\u1ed1i \u0111\u1ea5t l\u00e0 g\u00ec? C\u00f3 m\u1ea5y lo\u1ea1i? H\u01b0\u1edbng d\u1eabn n\u1ed1i \u0111\u1ea5t ti\u1ebfp \u0111i\u1ec7n"},"content":{"rendered":"

Vi\u1ec7c n\u1ed1i \u0111\u1ea5t ti\u1ebfp \u0111\u1ecba \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn v\u00e0 ch\u00fa tr\u1ecdng t\u1ea1i c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng l\u1edbn nh\u01b0: khu c\u00f4ng nghi\u1ec7p, x\u01b0\u1edfng s\u1ea3n xu\u1ea5t, t\u00f2a nh\u00e0 cao t\u1ea7ng, khu \u0111i\u1ec7n gi\u00f3,… Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c h\u1ea7u h\u1ebft c\u00e1c c\u00f4ng tr\u00ecnh t\u1ea1i n\u01b0\u1edbc ta \u00e1p d\u1ee5ng \u0111\u1ec3 gi\u1ea3m b\u1edbt ph\u1ea7n n\u00e0o t\u00ecnh tr\u1ea1ng b\u1ecb s\u00e9t \u0111\u00e1nh, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c v\u00f9ng c\u00f3 \u0111i\u1ec7n tr\u1edf cao nh\u01b0: \u0111\u1ed3i n\u00fai, \u0111\u00e1 s\u1ecfi,… V\u1eady n\u1ed1i \u0111\u1ea5t l\u00e0 g\u00ec<\/strong>? C\u00f3 bao nhi\u00eau lo\u1ea1i n\u1ed1i \u0111\u1ea5t? C\u00e1ch n\u1ed1i \u0111\u1ea5t ti\u1ebfp \u0111i\u1ec7n nh\u01b0 th\u1ebf n\u00e0o? H\u00e3y c\u00f9ng Bestray t\u00ecm hi\u1ec3u ngay d\u01b0\u1edbi b\u00e0i vi\u1ebft n\u00e0y nh\u00e9!<\/span><\/p>\n

1. N\u1ed1i \u0111\u1ea5t l\u00e0 g\u00ec?<\/strong><\/h2>\n

N\u1ed1i \u0111\u1ea5t<\/strong> (hay c\u00f2n g\u1ecdi l\u00e0 ti\u1ebfp \u0111\u1ecba<\/strong>, ti\u1ebfp \u0111\u1ea5t<\/strong>) l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u1ea7n thi\u1ebft ph\u1ea3i c\u00f3 trong nh\u1eefng c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng ng\u00e0y nay. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y d\u00f9ng \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 r\u00f2 r\u1ec9 \u0111i\u1ec7n b\u00ean ngo\u00e0i c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n, \u0111i\u1ec7n t\u1eed. C\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01a1n gi\u1ea3n r\u1eb1ng qu\u00e1 tr\u00ecnh n\u00e0y l\u00e0 qu\u00e1 tr\u00ecnh truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n t\u1ee9c th\u1eddi ph\u00f3ng th\u1eb3ng xu\u1ed1ng \u0111\u1ea5t nh\u1edd s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a d\u00e2y \u0111i\u1ec7n tr\u1edf th\u1ea5p. <\/span><\/p>\n

Vi\u1ec7c ti\u1ebfp \u0111\u1ecba s\u1ebd th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch n\u1ed1i ph\u1ea7n kh\u00f4ng mang d\u00f2ng c\u1ee7a thi\u1ebft b\u1ecb ho\u1eb7c trung t\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng cung c\u1ea5p v\u1edbi \u0111\u1ea5t. V\u00ec v\u1eady, n\u1ed1i \u0111\u1ea5t s\u1ebd gi\u00fap cho c\u00f4ng tr\u00ecnh \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 hi\u1ec7u qu\u1ea3, tr\u00e1nh t\u00ecnh tr\u1ea1ng b\u1ecb s\u00e9t \u0111\u00e1nh g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00e0i s\u1ea3n v\u00e0 t\u00ednh m\u1ea1ng con ng\u01b0\u1eddi.<\/span><\/p>\n

\u0110\u1ec3 c\u00f3 th\u1ec3 n\u1ed1i \u0111\u1ea5t th\u00ec th\u01b0\u1eddng s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu s\u1eaft m\u1ea1 k\u1ebdm. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c n\u1ed1i \u0111\u1ea5t cung c\u1ea5p \u0111\u01b0\u1eddng d\u1eabn \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 r\u00f2 r\u1ec9 \u0111i\u1ec7n. V\u1edbi d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb truy\u1ec1n \u0111\u1ebfn tr\u00e1i \u0111\u1ea5t c\u00f3 th\u1ebf n\u0103ng <\/span>W<\/span>t<\/span>=0. Do \u0111\u00f3, ti\u1ebfp \u0111\u1ecba s\u1ebd gi\u00fap b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n kh\u1ecfi b\u1ecb h\u01b0 h\u1ecfng.<\/span><\/p>\n

T\u1ea1i c\u00e1c n\u01b0\u1edbc Ch\u00e2u \u00c2u ho\u1eb7c ch\u00e2u M\u1ef9, h\u1ec7 th\u1ed1ng l\u01b0\u1edbi \u0111i\u1ec7n s\u1ebd c\u00f3 \u0111\u1ea7y \u0111\u1ee7 c\u1ea3 d\u00e2y ti\u1ebfp \u0111\u1ecba. Do \u0111\u00f3, chu\u00f4i c\u1eafm ngu\u1ed3n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n lu\u00f4n c\u00f3 3 ch\u00e2n (L-N-E), trong \u0111\u00f3 ch\u00e2n \u201cE\u201d l\u00e0 ch\u00e2n ti\u1ebfp \u0111\u1ecba.<\/span><\/p>\n

\u1ede Vi\u1ec7t Nam, c\u00e1ch n\u1ed1i \u0111\u1ea5t<\/strong> b\u1ea3o v\u1ec7 c\u1ee7a c\u00e1c h\u1ed9 gia \u0111\u00ecnh l\u00e0 c\u1eafm s\u00e2u 1 thanh s\u1eaft xu\u1ed1ng \u0111\u1ea5t t\u1ed1i thi\u1ec3u l\u00e0 10cm. Sau \u0111\u00f3, d\u00f9ng d\u00e2y \u0111i\u1ec7n n\u1ed1i v\u00e0o v\u1ecf c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u00e0 n\u1ed1i v\u00e0o thanh s\u1eaft n\u00e0y. Nh\u01b0 v\u1eady, ng\u01b0\u1eddi d\u00f9ng s\u1ebd kh\u00f4ng b\u1ecb gi\u1eadt \u0111i\u1ec7n khi l\u1ee1 ch\u1ea1m v\u00e0o v\u1ecf c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n trong nh\u00e0.<\/span><\/p>\n

2. C\u00e1c lo\u1ea1i n\u1ed1i \u0111\u1ea5t (ti\u1ebfp \u0111\u1ecba \u0111i\u1ec7n)<\/strong><\/h2>\n

C\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n ch\u1ee7 y\u1ebfu bao g\u1ed3m hai ph\u1ea7n kh\u00f4ng mang d\u00f2ng \u0111i\u1ec7n. C\u00e1c b\u1ed9 ph\u1eadn n\u00e0y l\u00e0 trung t\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng ho\u1eb7c khung c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n. T\u1eeb n\u1ed1i \u0111\u1ea5t c\u1ee7a hai b\u1ed9 ph\u1eadn kh\u00f4ng mang \u0111i\u1ec7n trong h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t, c\u00f3 th\u1ec3 ph\u00e2n th\u00e0nh hai lo\u1ea1i: n\u1ed1i \u0111\u1ea5t trung t\u00ednh<\/strong> v\u00e0 n\u1ed1i \u0111\u1ea5t thi\u1ebft b\u1ecb<\/strong>.\u00a0<\/span><\/p>\n

2.1 N\u1ed1i \u0111\u1ea5t trung t\u00ednh<\/strong><\/h3>\n

N\u1ed1i \u0111\u1ea5t trung t\u00ednh<\/strong> (hay c\u00f2n g\u1ecdi l\u00e0 n\u1ed1i \u0111\u1ea5t h\u1ec7 th\u1ed1ng<\/strong>) s\u1ebd \u0111\u01b0\u1ee3c n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi \u0111\u1ea5t nh\u1edd v\u00e0o s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a d\u00e2y GI. V\u1edbi lo\u1ea1i n\u1ed1i ti\u1ebfp \u0111\u1ea5t trung t\u00ednh n\u00e0y ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c cung c\u1ea5p cho h\u1ec7 th\u1ed1ng c\u00f3 cu\u1ed9n d\u00e2y h\u00ecnh sao, \u0111i\u1ec3n h\u00ecnh nh\u01b0: n\u1ed1i \u0111\u1ea5t trung t\u00ednh \u0111\u01b0\u1ee3c cung c\u1ea5p trong m\u00e1y ph\u00e1t \u0111i\u1ec7n, m\u00e1y bi\u1ebfn \u00e1p, \u0111\u1ed9ng c\u01a1,…..<\/span><\/p>\n

2.2 N\u1ed1i \u0111\u1ea5t thi\u1ebft b\u1ecb<\/strong><\/h3>\n

Lo\u1ea1i n\u1ed1i \u0111\u1ea5t thi\u1ebft b\u1ecb th\u01b0\u1eddng \u0111\u01b0\u1ee3c cung c\u1ea5p cho thi\u1ebft b\u1ecb \u0111i\u1ec7n. Ph\u1ea7n kh\u00f4ng mang d\u00f2ng \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb nh\u01b0 khung kim lo\u1ea1i c\u1ee7a ch\u00fang s\u1ebd \u0111\u01b0\u1ee3c ti\u1ebfp n\u1ed1i v\u1edbi \u0111\u1ea5t nh\u1edd v\u00e0o s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a d\u00e2y d\u1eabn. Trong b\u1ea5t k\u1ef3 l\u1ed7i n\u00e0o x\u1ea3y ra trong thi\u1ebft b\u1ecb \u0111i\u1ec7n, d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch \u0111i qua \u0111\u1ea5t nh\u1edd v\u00e0o s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a d\u00e2y d\u1eabn. T\u1eeb \u0111\u00f3, gi\u00fap b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng kh\u1ecfi b\u1ecb h\u01b0 h\u1ecfng.<\/span><\/p>\n

H\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t<\/strong> an to\u00e0n (hay g\u1ecdi l\u00e0 h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba<\/strong>) l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng d\u00f9ng \u0111\u1ec3 t\u1ea3n d\u00f2ng \u0111i\u1ec7n ph\u00e1t sinh v\u00e0o trong l\u00f2ng \u0111\u1ea5t, gi\u00fap \u0111\u1ea3m b\u1ea3o an to\u00e0n cho t\u00ednh m\u1ea1ng con ng\u01b0\u1eddi v\u00e0 t\u00e0i s\u1ea3n khi c\u00f3 s\u1ef1 ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp ho\u1eb7c gi\u00e1n ti\u1ebfp v\u1edbi c\u00e1c trang thi\u1ebft b\u1ecb \u0111i\u1ec7n. T\u00f9y thu\u1ed9c v\u00e0o ch\u1ee9c n\u0103ng m\u00e0 ng\u01b0\u1eddi ta ph\u00e2n ra l\u00e0m 2 lo\u1ea1i h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba l\u00e0 an to\u00e0n v\u00e0 ch\u1ed1ng s\u00e9t.<\/span><\/p>\n

2.3 N\u1ed1i \u0111\u1ea5t ch\u1ed1ng s\u00e9t<\/strong><\/h3>\n

S\u00e9t \u0111\u00e1nh c\u00f3 th\u1ec3 s\u1ebd ph\u00e1 h\u1ee7y nh\u00e0 c\u1eeda, c\u00f4ng tr\u00ecnh b\u1eb1ng d\u00f2ng \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p l\u1edbn v\u00e0 truy\u1ec1n qua c\u00e1c v\u1eadt c\u00f3 kh\u1ea3 n\u0103ng d\u1eabn \u0111i\u1ec7n nh\u01b0: \u1ed1ng n\u01b0\u1edbc, \u0103ng ten, thi\u1ebft b\u1ecb \u0111i\u1ec7n, d\u00e2y d\u1eabn \u0111i\u1ec7n,… B\u1edfi tia s\u1ebd c\u00f3 \u0111i\u1ec7n \u00e1p l\u1edbn s\u1ebd sinh nhi\u1ec7t l\u1edbn l\u00e0m ch\u1ea3y, ch\u00e1y, n\u1ed5 v\u1eadt d\u1eabn \u0111\u1ebfn l\u00e0m h\u01b0 h\u1ecfng ho\u1eb7c g\u00e2y h\u1ecfa ho\u1ea1n.<\/span><\/p>\n

Vi\u1ec7c l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t ch\u1ed1ng s\u00e9t s\u1ebd d\u1eabn truy\u1ec1n d\u00f2ng s\u00e9t xu\u1ed1ng \u0111\u1ea5t m\u1ed9t c\u00e1ch nhanh ch\u00f3ng, an to\u00e0n th\u00f4ng qua m\u1ed9t \u0111\u01b0\u1eddng tr\u1edf kh\u00e1ng th\u1ea5p gi\u00fap b\u1ea3o v\u1ec7 c\u00f4ng tr\u00ecnh, tr\u00e1nh nh\u1eefng thi\u1ec7t h\u1ea1i do s\u00e9t g\u00e2y ra.\u00a0<\/span><\/p>\n

H\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t ch\u1ed1ng s\u00e9t c\u00f3 th\u1ec3 gi\u00fap ti\u00eau t\u00e1n n\u0103ng l\u01b0\u1ee3ng qu\u00e1 \u0111i\u1ec7n \u00e1p xu\u1ed1ng \u0111\u1ea5t, l\u00e0m c\u00e2n b\u1eb1ng \u0111i\u1ec7n th\u1ebf v\u00e0 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi, thi\u1ebft b\u1ecb, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n, vi\u1ec5n th\u00f4ng,…<\/span><\/p>\n

Th\u00f4ng th\u01b0\u1eddng, c\u1ea7n \u0111\u00e1nh gi\u00e1 ti\u00eau chu\u1ea9n c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t ch\u1ed1ng s\u00e9t ph\u1ea3i k\u1ec3 \u0111\u1ebfn nh\u01b0: \u0111i\u1ec7n tr\u1edf ti\u1ebfp \u0111\u1ea5t, quy m\u00f4 n\u1ed1i \u0111\u1ea5t, v\u1eadt li\u1ec7u ti\u1ebfp \u0111\u1ecba,… T\u1eeb \u0111\u00f3, h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t ch\u1ed1ng s\u00e9t s\u1ebd \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c ti\u00eau chu\u1ea9n v\u00e0 ph\u00e1t huy \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u hi\u1ec7u qu\u1ea3 s\u1eed d\u1ee5ng cho c\u00f4ng tr\u00ecnh.<\/span><\/p>\n

2.4 N\u1ed1i \u0111\u1ea5t an to\u00e0n<\/strong><\/h3>\n

N\u1ed1i \u0111\u1ea5t an to\u00e0n<\/strong> l\u00e0 m\u1ed9t h\u00ecnh th\u1ee9c t\u1ea1o ra s\u1ef1 k\u1ebft n\u1ed1i t\u1eeb c\u00e1c thi\u1ebft b\u1ecb c\u00f3 \u0111i\u1ec7n v\u1edbi m\u1eb7t \u0111\u1ea5t. T\u1eeb \u0111\u00f3, gi\u00fap tr\u00e1nh kh\u1ecfi nh\u1eefng s\u1ef1 c\u1ed1 b\u1ea5t ng\u1edd khi c\u00e1c thi\u1ebft b\u1ecb s\u1eed d\u1ee5ng \u0111i\u1ec7n b\u1ecb h\u01b0 h\u1ecfng g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng r\u00f2 r\u1ec9 \u0111i\u1ec7n v\u00e0 tr\u00e1nh nguy hi\u1ec3m v\u1ec1 t\u00ednh m\u1ea1ng con ng\u01b0\u1eddi nh\u1edd v\u00e0o m\u1ed9t \u0111\u01b0\u1eddng vi\u1ec1n n\u1ed1i an to\u00e0n.<\/span><\/p>\n

Th\u00f4ng th\u01b0\u1eddng, n\u1ed1i \u0111\u1ea5t \u0111\u1ea5t an to\u00e0n c\u0169ng l\u00e0 m\u1ed9t trong nh\u1eefng y\u00eau c\u1ea7u an to\u00e0n \u0111i\u1ec7n b\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3 c\u1ee7a m\u1ed7i h\u1ed9 gia \u0111\u00ecnh c\u00f3 thi\u1ebft b\u1ecb \u0111i\u1ec7n \u00e1p > 1000V t\u1ea1i c\u00e1c ph\u00f2ng ngo\u00e0i tr\u1eddi \u0111\u1ec3 gi\u00fap gi\u1ea3m v\u00e0 tr\u00e1nh c\u00e1c nguy c\u01a1 v\u1ec1 \u0111i\u1ec7n gi\u1eadt. Th\u00f4ng qua vi\u1ec7c li\u00ean k\u1ebft t\u1eeb t\u1ea5t c\u1ea3 v\u1ecf thi\u1ebft b\u1ecb trong nh\u00e0 n\u1ed1i v\u1edbi \u0111\u1ea5t, ng\u01b0\u1eddi d\u00f9ng s\u1ebd an to\u00e0n h\u01a1n tr\u00e1nh b\u1ecb gi\u1eadt \u0111i\u1ec7n.<\/span><\/p>\n

Vi\u1ec7c k\u1ebft n\u1ed1i \u0111i\u1ec7n v\u1edbi m\u1ed9t \u0111i\u1ec7n tr\u1edf th\u1ea5p truy\u1ec1n xu\u1ed1ng \u0111\u1ea5t s\u1ebd gi\u00fap ng\u01b0\u1eddi s\u1eed d\u1ee5ng khi ch\u1ea1m ph\u1ea3i c\u00e1c thi\u1ebft b\u1ecb r\u00f2 r\u1ec9 th\u00ec d\u00f2ng \u0111i\u1ec7n v\u1eabn s\u1ebd kh\u00f4ng ch\u1ea1y qua c\u01a1 th\u1ec3 m\u00e0 ch\u1ea1y xu\u1ed1ng m\u1eb7t \u0111\u1ea5t. V\u00ec th\u1ebf, n\u1ed1i \u0111\u1ea5t an to\u00e0n s\u1ebd t\u1ea1o n\u00ean t\u00ednh an to\u00e0n t\u1ed1i \u01b0u cho ng\u01b0\u1eddi d\u00f9ng c\u00e1c thi\u1ebft b\u1ecb, \u0111\u1ed3 gia d\u1ee5ng \u0111i\u1ec7n.<\/span><\/p>\n

3. T\u1ea7m quan tr\u1ecdng c\u1ee7a n\u1ed1i \u0111\u1ea5t<\/strong><\/h2>\n

Th\u1ef1c hi\u1ec7n n\u1ed1i \u0111\u1ea5t trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng l\u00e0 \u0111i\u1ec1u v\u00f4 c\u00f9ng c\u1ea7n thi\u1ebft v\u00ec nhi\u1ec1u l\u00fd do nh\u01b0 sau:<\/span><\/p>\n

    \n
  • N\u1ed1i \u0111\u1ea5t gi\u00fap b\u1ea3o v\u1ec7 nh\u00e2n vi\u00ean kh\u1ecfi d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch trong l\u00fac thi c\u00f4ng c\u00f4ng tr\u00ecnh.<\/span><\/li>\n
  • N\u1ed1i \u0111\u1ea5t c\u00f2n gi\u00fap cung c\u1ea5p \u0111\u01b0\u1eddng d\u1eabn d\u1ec5 d\u00e0ng nh\u1ea5t cho d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch ngay c\u1ea3 sau khi c\u00e1ch \u0111i\u1ec7n b\u1ecb h\u1ecfng.<\/span><\/li>\n
  • Th\u1ef1c hi\u1ec7n vi\u1ec7c ti\u1ebfp \u0111i\u1ec7n \u0111\u1ecba s\u1ebd gi\u00fap b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb v\u00e0 c\u00e1c nh\u00e2n vi\u00ean kh\u1ecfi s\u1ef1 gia t\u0103ng \u0111i\u1ec7n \u00e1p cao v\u00e0 ph\u00f3ng \u0111i\u1ec7n s\u00e9t b\u1ea5t ng\u1edd.<\/span><\/li>\n
  • Vi\u1ec7c n\u1ed1i \u0111\u1ea5t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch n\u1ed1i \u0111i\u1ec7n c\u00e1c b\u1ed9 ph\u1eadn t\u01b0\u01a1ng \u1ee9ng trong h\u1ec7 th\u1ed1ng l\u1eafp \u0111\u1eb7t v\u1edbi h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn \u0111i\u1ec7n, \u0111i\u1ec7n c\u1ef1c \u0111\u1eb7t g\u1ea7n \u0111\u1ea5t ho\u1eb7c d\u01b0\u1edbi m\u1eb7t \u0111\u1ea5t. B\u00ean c\u1ea1nh \u0111\u00f3, t\u1ea5m ti\u1ebfp \u0111\u1ecba, \u0111i\u1ec7n c\u1ef1c d\u01b0\u1edbi m\u1eb7t \u0111\u1ea5t s\u1ebd c\u00f3 r\u00e3nh s\u1eaft ph\u1eb3ng. T\u1eeb \u0111\u00f3, t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 ph\u1eadn kim lo\u1ea1i kh\u00f4ng mang d\u00f2ng \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i.<\/span><\/li>\n<\/ul>\n

    Trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 s\u1ef1 c\u1ed1 x\u1ea3y ra, d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 t\u1eeb thi\u1ebft b\u1ecb s\u1ebd ch\u1ea1y qua h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t v\u00e0 t\u1eeb \u0111\u00f3 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb kh\u1ecfi d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1. Khi x\u1ea3y ra s\u1ef1 c\u1ed1, c\u00e1c d\u00e2y d\u1eabn s\u1ebd ch\u1ea1m \u0111\u1ea5t l\u00e0m t\u0103ng \u0111\u1ebfn \u0111i\u1ec7n \u00e1p b\u1eb1ng \u0111i\u1ec7n tr\u1edf (V=R) c\u1ee7a th\u1ea3m \u0111\u1ea5t nh\u00e2n v\u1edbi s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t.<\/span><\/p>\n

    C\u1ee5m ti\u1ebfp \u0111i\u1ec3m hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 n\u1ed1i \u0111\u1ea5t. C\u00e1c d\u00e2y d\u1eabn kim lo\u1ea1i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi nh\u1eefng b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t v\u1edbi ti\u1ebfp \u0111\u1ea5t \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 k\u1ebft n\u1ed1i \u0111i\u1ec7n. C\u00f2n \u0111\u1ed1i v\u1edbi n\u1ed1i \u0111\u1ea5t v\u00e0 n\u1ed1i \u0111\u1ea5t v\u1edbi nhau s\u1ebd g\u1ecdi l\u00e0 h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t.<\/span><\/p>\n

    4. T\u1ea1i sao ph\u1ea3i n\u1ed1i \u0111\u1ea5t b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb?<\/strong><\/h2>\n

    N\u1ed1i \u0111\u1ea5t b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb<\/strong> \u0111\u00f3ng vai tr\u00f2 to l\u1edbn trong vi\u1ec7c b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb \u0111i\u1ec7n nh\u1eb1m \u0111\u1ea3m b\u1ea3o s\u1ef1 an to\u00e0n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng \u0111i\u1ec7n trong t\u00f2a nh\u00e0.<\/span><\/p>\n

    T\u1ea1i Vi\u1ec7t Nam, vi\u1ec7c ti\u1ebfp \u0111\u1ecba \u0111\u1ec3 b\u1ea3o v\u1ec7 ng\u00f4i nh\u00e0 th\u00ec ch\u01b0a th\u1ef1c s\u1ef1 ch\u00fa tr\u1ecdng. Nh\u01b0ng m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p c\u00f3 b\u00e3o l\u1edbn, s\u00e9t \u0111\u00e1nh hay ch\u1eadp \u0111i\u1ec7n th\u00ec g\u00e2y thi\u1ec7t h\u1ea1i v\u00f4 c\u00f9ng l\u1edbn \u0111\u1ebfn ng\u01b0\u1eddi v\u00e0 t\u00e0i s\u1ea3n. Do \u0111\u00f3, mu\u1ed1n \u0111\u1ea3m b\u1ea3o an to\u00e0n th\u00ec v\u1ecf kim lo\u1ea1i c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi d\u00e2y ti\u1ebfp \u0111\u1ea5t. \u0110\u1eb7c bi\u1ec7t l\u00e0 khi s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng nh\u01b0 m\u00e1y gi\u1eb7t, t\u1ee7 l\u1ea1nh,… nh\u1ea5t thi\u1ebft ph\u1ea3i c\u00f3 d\u00e2y n\u1ed1i \u0111\u1ea5t \u0111\u1ec3 tr\u00e1nh b\u1ecb \u0111i\u1ec7n gi\u1eadt khi s\u1eed d\u1ee5ng.<\/span><\/p>\n

    5. C\u00e1ch n\u1ed1i \u0111\u1ea5t b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb an to\u00e0n, \u0111\u01a1n gi\u1ea3n<\/strong><\/h2>\n

    Tr\u00ean th\u1ef1c t\u1ebf, \u0111i\u1ec7n tr\u1edf c\u1ee7a c\u01a1 th\u1ec3 con ng\u01b0\u1eddi so v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y ti\u1ebfp \u0111\u1ea5t s\u1ebd nh\u1ecf h\u01a1n r\u1ea5t nhi\u1ec1u. V\u00ec v\u1eady, c\u00e1ch n\u1ed1i \u0111\u1ea5t s\u1ebd cho d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111\u00f3 v\u00e0 truy\u1ec1n xu\u1ed1ng \u0111\u1ea5t. \u0110\u1ec3 c\u00f3 th\u1ec3 ph\u00e1t huy t\u1ed1t nh\u1ea5t t\u00e1c d\u1ee5ng n\u1ed1i \u0111\u1ea5t c\u1ee7a d\u00e2y ti\u1ebfp \u0111\u1ea5t th\u00ec d\u00e2y ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfp x\u00fac t\u1ed1t \u1edf kho\u1ea3ng \u0111\u1ea5t r\u1ed9ng, \u0111i\u1ec7n tr\u1edf c\u1ee7a d\u00e2y <\/span>\u2264 4<\/span>\u03a9.<\/span><\/p>\n

    N\u1ebfu \u1edf trong chung c\u01b0 ho\u1eb7c nh\u00e0 ri\u00eang nh\u01b0ng v\u1eabn kh\u00f4ng h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ea5t (\u1ed5 c\u1eafm 3 ch\u1ea5u), v\u1eabn c\u00f3 c\u00e1ch n\u1ed1i \u0111\u1ea5t \u0111\u1ec3 b\u1ea3o v\u1ec7 an to\u00e0n. Ta c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng khung c\u1eeda b\u1eb1ng kim lo\u1ea1i (khung c\u1eeda s\u1ed5, c\u1eeda ra v\u00e0o, khung nh\u00f4m,…) ho\u1eb7c ph\u1ea7n kim lo\u1ea1i n\u00e0o c\u00f3 ch\u00e2n ch\u00f4n v\u00e0o t\u01b0\u1eddng, s\u00e0n v\u00e0i cm. Sau \u0111\u00f3, l\u1ea5y m\u1ed9t s\u1ee3i d\u00e2y kim lo\u1ea1i (kh\u00f4ng c\u1ea7n to, k\u1ec3 c\u1ea3 d\u00e2y con chu\u1ed9t m\u00e1y t\u00ednh, d\u00e2y c\u1ee5c s\u1ea1c h\u01b0 m\u00e0 c\u00f3 v\u1ecf b\u1ecdc) n\u1ed1i t\u1eeb v\u1ecf c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n r\u1ed3i cho ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi ph\u1ea7n kim lo\u1ea1i c\u1ee7a v\u1eadt \u0111\u00f3.<\/span><\/p>\n

    L\u01b0u \u00fd:<\/i><\/b> n\u1ebfu v\u1eadt \u0111\u00f3 c\u00f3 l\u1edbp s\u01a1n th\u00ec ph\u1ea3i c\u1ea1o \u0111i, c\u00f2n c\u00f3 l\u1edbp b\u1ee5i b\u1ea9n, keo th\u00ec ph\u1ea3i lau ch\u00f9i s\u1ea1ch \u0111\u1ec3 l\u1ed9 h\u1eb3n ph\u1ea7n kim lo\u1ea1i ra. \u0110\u1ed3ng th\u1eddi, ph\u1ea3i ch\u1eafc ch\u1eafn ch\u00e2n c\u1ee7a v\u1eadt n\u00e0y ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u00e0o t\u01b0\u1eddng (c\u00f3 c\u00e1c khung c\u1eeda hay b\u1eaft khoan v\u00e0o t\u01b0\u1eddng th\u00f4ng qua nh\u1eefng con \u1ed1c \u0111\u00e3 b\u1ecdc nh\u1ef1a b\u00ean ngo\u00e0i th\u00ec s\u1ebd kh\u00f4ng c\u00f3 t\u00e1c d\u1ee5ng d\u1eabn \u0111i\u1ec7n).<\/span><\/i><\/p>\n

    6. Ti\u1ebfp \u0111\u1ecba ch\u1ed1ng s\u00e9t<\/strong><\/h2>\n

    H\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba ch\u1ed1ng s\u00e9t tr\u1edf th\u00e0nh m\u1ed9t b\u1ed9 ph\u1eadn quan tr\u1ecdng kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a c\u00e1c c\u00f4ng tr\u00ecnh. N\u1ebfu ti\u1ebfp \u0111\u1ecba ch\u1ed1ng s\u00e9t \u0111\u01b0\u1ee3c ch\u00fa tr\u1ecdng khi thi c\u00f4ng, l\u1eafp \u0111\u1eb7t \u0111\u00fang k\u1ef9 thu\u1eadt th\u00ec s\u1ebd mang l\u1ea1i hi\u1ec7u qu\u1ea3 ch\u1ed1ng s\u00e9t r\u1ea5t cao. V\u00ec th\u1ebf, vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c quy tr\u00ecnh l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t l\u00e0 v\u00f4 c\u00f9ng c\u1ea7n thi\u1ebft. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 quy tr\u00ecnh \u0111\u1ec3 l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t ch\u1ed1ng s\u00e9t \u1edf c\u00e1c c\u00f4ng tr\u00ecnh, nh\u01b0 sau:<\/span><\/p>\n

    Ti\u1ebfn h\u00e0nh \u0111\u00e0o r\u00e3nh, h\u1ed1 ho\u1eb7c khoan gi\u1ebfng ti\u1ebfp \u0111\u1ea5t<\/b><\/p>\n