{"id":66291,"date":"2024-12-02T13:42:08","date_gmt":"2024-12-02T06:42:08","guid":{"rendered":"https:\/\/www.baohoxanh.com\/blog\/?p=66291"},"modified":"2026-09-06T16:30:48","modified_gmt":"2026-09-06T09:30:48","slug":"bo-tiep-dia-di-dong-3-trong-1-an-toan-tien","status":"publish","type":"post","link":"https:\/\/www.baohoxanh.com\/blog\/bo-tiep-dia-di-dong-3-trong-1-an-toan-tien\/","title":{"rendered":"B\u1ed9 Ti\u1ebfp \u0110\u1ecba Di \u0110\u1ed9ng 3 Trong 1: An To\u00e0n – Ti\u1ec7n L\u1ee3i – \u0110a N\u0103ng"},"content":{"rendered":"\r\n

B\u1ed9 Ti\u1ebfp \u0110\u1ecba Di \u0110\u1ed9ng L\u00e0m Vi\u1ec7c Theo Nguy\u00ean T\u1eafc N\u00e0o<\/h2>\r\n\r\n\r\n\r\n

B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 quan tr\u1ecdng, gi\u00fap n\u1ed1i \u0111\u1ea5t t\u1ea1m th\u1eddi cho c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh thi c\u00f4ng, s\u1eeda ch\u1eefa, b\u1ea3o d\u01b0\u1ee1ng. V\u1edbi t\u00ednh n\u0103ng di \u0111\u1ed9ng linh ho\u1ea1t, thi\u1ebft b\u1ecb n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t v\u00e0 th\u00e1o g\u1ee1 nhanh ch\u00f3ng trong nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c kh\u00e1c nhau, t\u1eeb c\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng cho \u0111\u1ebfn c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n l\u01b0\u1edbi. \u0110\u00e2y l\u00e0 thi\u1ebft b\u1ecb ch\u1ec9 l\u1eafp l\u00ean \u0111o\u1ea1n d\u00e2y \u0111\u00e3 c\u1eaft \u0111i\u1ec7n v\u00e0 \u0111\u00e3 th\u1eed h\u1ebft \u0111i\u1ec7n \u00e1p, nh\u1eb1m gi\u1eef \u0111o\u1ea1n d\u00e2y \u0111\u00f3 \u1edf \u0111i\u1ec7n th\u1ebf \u0111\u1ea5t trong su\u1ed1t th\u1eddi gian c\u00f3 ng\u01b0\u1eddi l\u00e0m vi\u1ec7c.<\/p>\r\n\n\n\n

B\u00e0i vi\u1ebft b\u00e0n c\u1ea5u h\u00ecnh 3 trong 1. C\u00e1c t\u00ecnh hu\u1ed1ng d\u00f9ng th\u1ef1c t\u1ebf t\u1ea1i tr\u1ea1m v\u00e0 tr\u00ean l\u01b0\u1edbi xem b\u00e0i \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng.<\/p>\n\r\n\r\n\r\n

C\u1ea5u t\u1ea1o c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> bao g\u1ed3m c\u00e1c b\u1ed9 ph\u1eadn nh\u01b0 d\u00e2y ti\u1ebfp \u0111\u1ecba, m\u1ecf k\u1eb9p, c\u1ecdc ti\u1ebfp \u0111\u1ea5t v\u00e0 c\u00e1c s\u00e0o thao t\u00e1c, t\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb v\u1eadt li\u1ec7u d\u1eabn \u0111i\u1ec7n t\u1ed1t nh\u01b0 \u0111\u1ed3ng, \u0111\u1ed3ng nh\u00f4m, th\u00e9p, gi\u00fap t\u1ea1o ra m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn an to\u00e0n, cho d\u00f2ng s\u1ef1 c\u1ed1 m\u1ed9t \u0111\u01b0\u1eddng xu\u1ed1ng \u0111\u1ea5t c\u00f3 tr\u1edf kh\u00e1ng th\u1ea5p h\u01a1n h\u1eb3n \u0111\u01b0\u1eddng \u0111i qua c\u01a1 th\u1ec3 ng\u01b0\u1eddi. Tr\u1edf kh\u00e1ng c\u1ee7a c\u1ea3 b\u1ed9 n\u1eb1m \u1edf ba ch\u1ed7 n\u1ed1i ti\u1ebfp nhau: \u0111i\u1ec3m k\u1eb9p l\u00ean d\u00e2y pha, th\u00e2n d\u00e2y \u0111\u1ed3ng b\u1ec7n, v\u00e0 \u0111i\u1ec3m n\u1ed1i xu\u1ed1ng c\u1ecdc ho\u1eb7c xu\u1ed1ng l\u01b0\u1edbi ti\u1ebfp \u0111\u1ea5t. Ch\u1ed7 y\u1ebfu nh\u1ea5t g\u1ea7n nh\u01b0 lu\u00f4n l\u00e0 \u0111i\u1ec3m k\u1eb9p, v\u00ec d\u00e2y tr\u1ea7n ngo\u00e0i tr\u1eddi c\u00f3 l\u1edbp oxit v\u00e0 b\u1ee5i b\u00e1m, ch\u1ee9 kh\u00f4ng ph\u1ea3i th\u00e2n d\u00e2y.<\/p>\r\n\r\n\r\n\n

V\u00ec Sao Ph\u1ea3i N\u1ed1i \u0110\u1ea5t T\u1ea1m Th\u1eddi Tr\u01b0\u1edbc Khi L\u00e0m Vi\u1ec7c<\/h3>\n\r\n\r\n\r\n

H\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ecba \u0111\u00f3ng m\u1ed9t vai tr\u00f2 v\u00f4 c\u00f9ng quan tr\u1ecdng trong ng\u00e0nh \u0111i\u1ec7n, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong nh\u1eefng c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng ho\u1eb7c s\u1eeda ch\u1eefa c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n l\u01b0\u1edbi. Ti\u1ebfp \u0111\u1ecba gi\u00fap duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n v\u00e0 ng\u0103n ng\u1eeba s\u1ef1 c\u1ed1 v\u1ec1 \u0111i\u1ec7n c\u00f3 th\u1ec3 x\u1ea3y ra, nh\u01b0 \u0111i\u1ec7n gi\u1eadt, ch\u00e1y n\u1ed5 do s\u1ef1 c\u1ed1 r\u00f2 r\u1ec9 \u0111i\u1ec7n. N\u1ed1i \u0111\u1ea5t t\u1ea1m th\u1eddi c\u00f2n x\u1eed l\u00fd m\u1ed9t th\u1ee9 m\u1eaft th\u01b0\u1eddng kh\u00f4ng th\u1ea5y: \u0111o\u1ea1n d\u00e2y \u0111\u00e3 c\u1eaft \u0111i\u1ec7n nh\u01b0ng ch\u1ea1y song song v\u1edbi tuy\u1ebfn \u0111ang mang \u0111i\u1ec7n s\u1ebd b\u1ecb c\u1ea3m \u1ee9ng l\u00ean \u0111i\u1ec7n \u00e1p, v\u00e0 tuy\u1ebfn c\u00e0ng d\u00e0i th\u00ec \u0111i\u1ec7n dung k\u00fd sinh c\u00f2n gi\u1eef l\u1ea1i \u0111i\u1ec7n t\u00edch m\u1ed9t l\u00fac sau khi c\u1eaft. C\u1ea3 hai \u0111\u1ec1u \u0111\u1ee7 g\u00e2y gi\u1eadt cho ng\u01b0\u1eddi \u0111ang \u0111\u1ee9ng tr\u00ean c\u1ed9t, v\u00e0 c\u1ea3 hai \u0111\u1ec1u kh\u00f4ng hi\u1ec7n ra \u1edf b\u01b0\u1edbc th\u1eed h\u1ebft \u0111i\u1ec7n \u00e1p l\u00fac tr\u01b0\u1edbc \u0111\u00f3.<\/p>\r\n\r\n\r\n\n

B\u1ed9 Ti\u1ebfp \u0110\u1ecba Di \u0110\u1ed9ng Kh\u00e1c H\u1ec7 Ti\u1ebfp \u0110\u1ecba C\u1ed1 \u0110\u1ecbnh Ra Sao<\/h3>\n\r\n\r\n\r\n

B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> ch\u1ec9 t\u1ed3n t\u1ea1i trong kho\u1ea3ng th\u1eddi gian c\u00f3 ng\u01b0\u1eddi l\u00e0m vi\u1ec7c tr\u00ean \u0111o\u1ea1n d\u00e2y: l\u1eafp l\u00fac b\u1eaft \u0111\u1ea7u, th\u00e1o ra khi b\u00e0n giao xong. H\u1ec7 ti\u1ebfp \u0111\u1ecba c\u1ed1 \u0111\u1ecbnh c\u1ee7a tr\u1ea1m hay c\u1ee7a c\u1ed9t th\u00ec ng\u01b0\u1ee3c l\u1ea1i, n\u1eb1m nguy\u00ean t\u1ea1i ch\u1ed7 su\u1ed1t \u0111\u1eddi c\u00f4ng tr\u00ecnh \u0111\u1ec3 ch\u1ed1ng s\u00e9t, n\u1ed1i v\u1ecf thi\u1ebft b\u1ecb v\u00e0 t\u1ea3n d\u00f2ng ch\u1ea1m v\u1ecf. Hai th\u1ee9 kh\u00f4ng thay nhau \u0111\u01b0\u1ee3c: tr\u1ea1m c\u00f3 l\u01b0\u1edbi ti\u1ebfp \u0111\u1ea5t t\u1ed1t v\u1eabn ph\u1ea3i l\u1eafp b\u1ed9 di \u0111\u1ed9ng l\u00ean \u0111\u00fang \u0111o\u1ea1n d\u00e2y \u0111ang s\u1eeda, v\u00ec l\u01b0\u1edbi tr\u1ea1m kh\u00f4ng n\u1ed1i v\u00e0o \u0111o\u1ea1n d\u00e2y \u0111\u00f3. \u0110i\u1ec1u c\u1ea7n nh\u1edb l\u00e0 b\u1ed9 ti\u1ebfp \u0111\u1ecba kh\u00f4ng \u0111\u00f3ng vai tr\u00f2 ng\u1eaft \u0111i\u1ec7n; n\u00f3 t\u1ea1o s\u1eb5n m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn tr\u1edf kh\u00e1ng th\u1ea5p xu\u1ed1ng \u0111\u1ea5t cho \u0111o\u1ea1n d\u00e2y \u0111\u00e3 c\u1eaft \u0111i\u1ec7n, \u0111\u1ec3 d\u00f2ng \u0111i\u1ec7n b\u1ea5t ng\u1edd c\u00f3 ch\u1ed7 tho\u00e1t thay v\u00ec \u0111i qua ng\u01b0\u1eddi th\u1ee3.<\/p>\r\n\r\n\r\n\r\n

Tu\u1ed5i th\u1ecd c\u1ee7a b\u1ed9 t\u00ednh theo s\u1ef1 c\u1ed1 ch\u1ee9 kh\u00f4ng theo n\u0103m: m\u1ed9t b\u1ed9 \u0111\u00e3 th\u1ef1c s\u1ef1 g\u00e1nh d\u00f2ng ng\u1eafn m\u1ea1ch ph\u1ea3i lo\u1ea1i b\u1ecf ch\u1ee9 kh\u00f4ng d\u00f9ng l\u1ea1i, v\u00ec nhi\u1ec7t sinh ra trong v\u00e0i ph\u1ea7n gi\u00e2y \u0111\u00e3 \u1ee7 m\u1ec1m s\u1ee3i \u0111\u1ed3ng v\u00e0 l\u00e0m ch\u1ea3y \u0111i\u1ec3m \u00e9p \u0111\u1ea7u c\u1ed1t, d\u00f9 nh\u00ecn b\u00ean ngo\u00e0i d\u00e2y v\u1eabn c\u00f2n nguy\u00ean. Do \u0111\u00f3, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> n\u1eb1m trong danh m\u1ee5c trang b\u1ecb b\u1eaft bu\u1ed9c c\u1ee7a t\u1ed5 c\u00f4ng t\u00e1c \u0111\u01b0\u1eddng d\u00e2y, c\u00f9ng v\u1edbi b\u00fat th\u1eed \u0111i\u1ec7n<\/a> v\u00e0 g\u0103ng tay c\u00e1ch \u0111i\u1ec7n<\/a> \u0111\u00fang c\u1ea5p \u0111i\u1ec7n \u00e1p.<\/p>\r\n\r\n\r\n\r\n

\"B\u1ed9
M\u1ed9t b\u1ed9 \u0111\u1ea7y \u0111\u1ee7 g\u1ed3m d\u00e2y \u0111\u1ed3ng b\u1ec7n, c\u1ee5m m\u1ecf k\u1eb9p, c\u1ecdc ti\u1ebfp \u0111\u1ea5t v\u00e0 s\u00e0o thao t\u00e1c c\u00e1ch \u0111i\u1ec7n<\/em><\/figcaption><\/figure>\r\n\r\n\r\n\r\n

C\u00f4ng D\u1ee5ng Th\u1ef1c T\u1ebf Tr\u00ean C\u00f4ng Tr\u01b0\u1eddng \u0110i\u1ec7n<\/h2>\r\n\r\n\r\n\r\n

C\u00f4ng D\u1ee5ng B\u1ea3o V\u1ec7 Ng\u01b0\u1eddi Thao T\u00e1c<\/h3>\r\n\r\n\r\n\r\n

M\u1ed9t trong nh\u1eefng c\u00f4ng d\u1ee5ng quan tr\u1ecdng nh\u1ea5t c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> l\u00e0 b\u1ea3o v\u1ec7 an to\u00e0n cho ng\u01b0\u1eddi lao \u0111\u1ed9ng trong qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n. Trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng hay s\u1eeda ch\u1eefa \u0111i\u1ec7n l\u01b0\u1edbi, nh\u1eefng ng\u01b0\u1eddi th\u1ee3 \u0111i\u1ec7n th\u01b0\u1eddng xuy\u00ean ph\u1ea3i ti\u1ebfp x\u00fac v\u1edbi c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p cao. N\u1ebfu kh\u00f4ng c\u00f3 m\u1ed9t h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 th\u00edch h\u1ee3p, nguy c\u01a1 x\u1ea3y ra tai n\u1ea1n \u0111i\u1ec7n gi\u1eadt l\u00e0 r\u1ea5t cao, g\u00e2y nguy hi\u1ec3m tr\u1ef1c ti\u1ebfp \u0111\u1ebfn t\u00ednh m\u1ea1ng c\u1ee7a ng\u01b0\u1eddi lao \u0111\u1ed9ng.<\/p>\r\n\r\n\r\n\r\n

B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> gi\u00fap ng\u0103n ng\u1eeba r\u1ee7i ro n\u00e0y b\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn an to\u00e0n cho d\u00f2ng \u0111i\u1ec7n, t\u1eeb \u0111\u00f3 gi\u1ea3m thi\u1ec3u kh\u1ea3 n\u0103ng b\u1ecb \u0111i\u1ec7n gi\u1eadt. Khi c\u00f3 s\u1ef1 c\u1ed1 v\u1ec1 \u0111i\u1ec7n, ch\u1eb3ng h\u1ea1n nh\u01b0 r\u00f2 r\u1ec9 \u0111i\u1ec7n ho\u1eb7c ch\u1eadp \u0111i\u1ec7n, d\u00f2ng \u0111i\u1ec7n s\u1ebd \u0111\u01b0\u1ee3c d\u1eabn nhanh ch\u00f3ng xu\u1ed1ng \u0111\u1ea5t thay v\u00ec truy\u1ec1n v\u00e0o c\u01a1 th\u1ec3 con ng\u01b0\u1eddi. \u0110i\u1ec1u n\u00e0y h\u1ea1 m\u1ee9c \u0111i\u1ec7n \u00e1p m\u00e0 ng\u01b0\u1eddi th\u1ee3 c\u00f3 th\u1ec3 ph\u1ea3i ch\u1ecbu, \u0111\u1ed3ng th\u1eddi t\u1ea1o d\u00f2ng \u0111\u1ee7 l\u1edbn \u0111\u1ec3 r\u01a1 le b\u1ea3o v\u1ec7 c\u1eaft m\u1ea1ch, thay v\u00ec \u0111\u1ec3 \u0111\u01b0\u1eddng d\u00e2y t\u00e1i mang \u0111i\u1ec7n \u00e2m th\u1ea7m trong l\u00fac t\u1ed5 c\u00f4ng t\u00e1c \u0111ang l\u00e0m vi\u1ec7c tr\u00ean \u0111\u00f3.<\/p>\r\n\r\n\r\n\r\n

C\u00f3 m\u1ed9t \u0111i\u1ec1u ki\u1ec7n k\u00e8m theo m\u00e0 nhi\u1ec1u t\u1ed5 b\u1ecf qua: b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> ch\u1ec9 k\u00e9o ng\u01b0\u1eddi th\u1ee3 v\u1ec1 c\u00f9ng \u0111i\u1ec7n th\u1ebf v\u1edbi d\u00e2y khi n\u00f3 \u0111\u01b0\u1ee3c l\u1eafp ngay s\u00e1t v\u1ecb tr\u00ed l\u00e0m vi\u1ec7c, ho\u1eb7c l\u1eafp \u1edf c\u1ea3 hai ph\u00eda k\u1eb9p v\u1ecb tr\u00ed \u0111\u00f3 v\u00e0o gi\u1eefa. L\u1eafp c\u00e1ch xa v\u00e0i nh\u1ecbp c\u1ed9t th\u00ec d\u1ecdc theo d\u00e2y v\u1eabn c\u00f2n ch\u00eanh l\u1ec7ch \u0111i\u1ec7n th\u1ebf, v\u00e0 ng\u01b0\u1eddi th\u1ee3 n\u1eb1m trong kho\u1ea3ng ch\u00eanh l\u1ec7ch \u1ea5y.<\/p>\r\n\r\n\r\n\r\n

V\u00ec Sao Ph\u1ea3i N\u1ed1i \u0110\u1ea5t Tr\u01b0\u1edbc R\u1ed3i M\u1edbi N\u1ed1i Pha<\/h3>\r\n\r\n\r\n\r\n

Tr\u01b0\u1edbc khi b\u00e0n t\u1edbi tr\u00ecnh t\u1ef1, ph\u1ea3i g\u1ee1 m\u1ed9t hi\u1ec3u nh\u1ea7m ph\u1ed5 bi\u1ebfn: b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng kh\u00f4ng ng\u1eaft \u0111\u01b0\u1ee3c d\u00f2ng \u0111i\u1ec7n v\u00e0 kh\u00f4ng d\u00f9ng tr\u00ean \u0111\u01b0\u1eddng d\u00e2y \u0111ang mang \u0111i\u1ec7n. Tr\u00ecnh t\u1ef1 lu\u00f4n l\u00e0 c\u1eaft \u0111i\u1ec7n t\u1ea1i ngu\u1ed3n, kh\u00f3a v\u00e0 treo bi\u1ec3n c\u1ea3nh b\u00e1o, d\u00f9ng thi\u1ebft b\u1ecb th\u1eed \u0111i\u1ec7n x\u00e1c nh\u1eadn \u0111\u00e3 h\u1ebft \u0111i\u1ec7n \u00e1p, sau \u0111\u00f3 m\u1edbi l\u1eafp b\u1ed9 ti\u1ebfp \u0111\u1ecba.<\/p>\n\n\n\n

Th\u1ee9 t\u1ef1 \u0111\u00f3 tr\u00f9ng v\u1edbi chu\u1ed7i thao t\u00e1c ghi trong quy \u0111\u1ecbnh thao t\u00e1c an to\u00e0n \u0111i\u1ec7n 1910.333 c\u1ee7a OSHA<\/a>: c\u1eaft ngu\u1ed3n, kho\u00e1 v\u00e0 treo th\u1ebb t\u1ea1i \u0111i\u1ec3m c\u1eaft, r\u1ed3i m\u1edbi d\u00f9ng thi\u1ebft b\u1ecb th\u1eed x\u00e1c nh\u1eadn t\u1eebng ph\u1ea7n d\u1eabn \u0111\u00e3 h\u1ebft \u0111i\u1ec7n \u00e1p; ri\u00eang m\u1ea1ch tr\u00ean 600 V th\u00ec thi\u1ebft b\u1ecb th\u1eed ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m l\u1ea1i ngay tr\u01b0\u1edbc v\u00e0 ngay sau ph\u00e9p th\u1eed. B\u1ed9 ti\u1ebfp \u0111\u1ecba \u0111\u1ee9ng sau c\u1ea3 ba vi\u1ec7c \u0111\u00f3 v\u00e0 kh\u00f4ng thay th\u1ebf vi\u1ec7c n\u00e0o trong s\u1ed1 ch\u00fang. Ng\u01b0\u1eddi nh\u1eadn b\u00e0n giao hi\u1ec7n tr\u01b0\u1eddng n\u00ean soi \u0111\u00fang th\u1ee9 t\u1ef1 n\u00e0y khi \u0111\u1ecdc phi\u1ebfu c\u00f4ng t\u00e1c, v\u00ec \u0111\u1ea3o b\u01b0\u1edbc l\u00e0 d\u1ea1ng sai kh\u00f4ng \u0111\u1ec3 l\u1ea1i d\u1ea5u v\u1ebft n\u00e0o tr\u00ean thi\u1ebft b\u1ecb v\u00e0 ch\u1ec9 l\u1ed9 ra khi \u0111\u00e3 c\u00f3 s\u1ef1 c\u1ed1.<\/p>\n\n\n\n

Vai tr\u00f2 c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba n\u1eb1m \u1edf kho\u1ea3ng th\u1eddi gian sau \u0111\u00f3. N\u1ebfu c\u00f3 ng\u01b0\u1eddi \u0111\u00f3ng nh\u1ea7m dao c\u00e1ch ly, ho\u1eb7c \u0111o\u1ea1n d\u00e2y \u0111ang s\u1eeda b\u1ecb c\u1ea3m \u1ee9ng \u0111i\u1ec7n \u00e1p t\u1eeb tuy\u1ebfn ch\u1ea1y song song, ho\u1eb7c s\u00e9t \u0111\u00e1nh lan truy\u1ec1n tr\u00ean tuy\u1ebfn, th\u00ec d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua b\u1ed9 ti\u1ebfp \u0111\u1ecba xu\u1ed1ng \u0111\u1ea5t thay v\u00ec ch\u1ea1y qua ng\u01b0\u1eddi th\u1ee3 \u0111ang \u0111\u1ee9ng tr\u00ean c\u1ed9t. \u0110\u00e2y l\u00e0 l\u1edbp b\u1ea3o v\u1ec7 d\u00e0nh cho t\u00ecnh hu\u1ed1ng ngo\u00e0i d\u1ef1 ki\u1ebfn, kh\u00f4ng ph\u1ea3i thi\u1ebft b\u1ecb v\u1eadn h\u00e0nh th\u01b0\u1eddng ng\u00e0y.<\/p>\n\n\n\n

V\u00ec v\u1eady ti\u1ebft di\u1ec7n d\u00e2y v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu d\u00f2ng ng\u1eafn m\u1ea1ch c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba ph\u1ea3i ch\u1ecdn theo d\u00f2ng ng\u1eafn m\u1ea1ch t\u00ednh to\u00e1n t\u1ea1i ch\u00ednh \u0111i\u1ec3m l\u00e0m vi\u1ec7c, kh\u00f4ng ch\u1ecdn theo c\u1ea3m t\u00ednh hay theo gi\u00e1. \u0110\u01a1n v\u1ecb qu\u1ea3n l\u00fd l\u01b0\u1edbi th\u01b0\u1eddng c\u00f3 s\u1eb5n s\u1ed1 li\u1ec7u n\u00e0y cho t\u1eebng v\u1ecb tr\u00ed, n\u00ean h\u1ecfi tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng. Chu\u1ea9n tham chi\u1ebfu qu\u1ed1c t\u1ebf cho thi\u1ebft b\u1ecb n\u1ed1i \u0111\u1ea5t di \u0111\u1ed9ng l\u00e0 IEC 61230.<\/p>\r\n\r\n\r\n\r\n

T\u00ednh Di \u0110\u1ed9ng V\u00e0 Thao T\u00e1c T\u1ea1i Hi\u1ec7n Tr\u01b0\u1eddng<\/h3>\r\n\r\n\r\n\r\n

M\u1ed9t trong nh\u1eefng l\u00fd do khi\u1ebfn b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u cho c\u00e1c c\u00f4ng tr\u00ecnh v\u00e0 s\u1ef1 ki\u1ec7n l\u00e0 t\u00ednh di \u0111\u1ed9ng v\u00e0 linh ho\u1ea1t c\u1ee7a n\u00f3. Trong c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng ho\u1eb7c s\u1eeda ch\u1eefa \u0111i\u1ec7n l\u01b0\u1edbi, \u0111\u00f4i khi c\u1ea7n ph\u1ea3i di chuy\u1ec3n thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u00e0 thay \u0111\u1ed5i v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng. B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng di chuy\u1ec3n v\u00e0 l\u1eafp \u0111\u1eb7t l\u1ea1i m\u00e0 kh\u00f4ng g\u1eb7p kh\u00f3 kh\u0103n, \u0111i\u1ec1u n\u00e0y gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng.<\/p>\r\n\r\n\r\n\r\n

V\u1edbi b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 220kV<\/strong> hay b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 110kV<\/strong>, th\u1ee9 t\u1ef1 thao t\u00e1c l\u00e0 c\u1ed1 \u0111\u1ecbnh v\u00e0 kh\u00f4ng r\u00fat g\u1ecdn \u0111\u01b0\u1ee3c: n\u1ed1i \u0111\u1ea7u d\u00e2y xu\u1ed1ng c\u1ecdc ho\u1eb7c xu\u1ed1ng \u0111i\u1ec3m ti\u1ebfp \u0111\u1ea5t tr\u01b0\u1edbc, sau \u0111\u00f3 m\u1edbi \u0111\u01b0a s\u00e0o l\u00ean k\u1eb9p v\u00e0o t\u1eebng pha; khi th\u00e1o th\u00ec l\u00e0m ng\u01b0\u1ee3c l\u1ea1i, g\u1ee1 pha tr\u01b0\u1edbc r\u1ed3i m\u1edbi g\u1ee1 \u0111\u1ea7u \u0111\u1ea5t sau c\u00f9ng. L\u00e0m ng\u01b0\u1ee3c th\u1ee9 t\u1ef1 ngh\u0129a l\u00e0 c\u00f3 m\u1ed9t l\u00fac d\u00e2y \u0111\u1ed3ng b\u1ec7n mang \u0111i\u1ec7n th\u1ebf c\u1ee7a d\u00e2y pha m\u00e0 ch\u01b0a c\u00f3 \u0111\u01b0\u1eddng xu\u1ed1ng \u0111\u1ea5t, v\u00e0 ng\u01b0\u1eddi c\u1ea7m s\u00e0o l\u00fac \u0111\u00f3 l\u00e0 ph\u1ea7n n\u1ed1i d\u00e0i c\u1ee7a \u0111o\u1ea1n d\u00e2y \u1ea5y.<\/p>\r\n\r\n\r\n\r\n

Ch\u1ed7 t\u1ed1n th\u1eddi gian th\u1eadt n\u1eb1m \u1edf vi\u1ec7c l\u00e0m s\u1ea1ch \u0111i\u1ec3m k\u1eb9p ch\u1ee9 kh\u00f4ng \u1edf vi\u1ec7c cu\u1ed1n d\u00e2y. D\u00e2y nh\u00f4m l\u00f5i th\u00e9p ngo\u00e0i tr\u1eddi ph\u1ee7 m\u1ed9t l\u1edbp oxit nh\u00f4m kh\u00f4ng d\u1eabn \u0111i\u1ec7n; m\u1ecf k\u1eb9p \u0111\u00e8 l\u00ean l\u1edbp \u0111\u00f3 th\u00ec \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac cao v\u00e0 \u0111i\u1ec3m k\u1eb9p s\u1ebd ph\u00f3ng h\u1ed3 quang ngay khi c\u00f3 d\u00f2ng ch\u1ea1y qua. M\u1ecf k\u1eb9p ph\u1ea3i c\u1eafn qua \u0111\u01b0\u1ee3c l\u1edbp oxit v\u00e0 si\u1ebft \u0111\u1ee7 ch\u1eb7t, \u0111\u00f3 l\u00e0 l\u00fd do r\u0103ng k\u1eb9p l\u00e0m nh\u1ecdn ch\u1ee9 kh\u00f4ng l\u00e0m ph\u1eb3ng. S\u00e0o thao t\u00e1c \u0111i k\u00e8m c\u0169ng c\u00f9ng h\u1ecd v\u1eadt li\u1ec7u v\u1edbi s\u00e0o c\u00e1ch \u0111i\u1ec7n<\/a> d\u00f9ng \u0111\u1ec3 \u0111\u00f3ng c\u1eaft tr\u00ean l\u01b0\u1edbi.<\/p>\r\n\r\n\r\n\r\n

Ph\u00e2n C\u1ea5p B\u1ed9 Ti\u1ebfp \u0110\u1ecba Theo \u0110i\u1ec7n \u00c1p \u0110ang Thao T\u00e1c<\/h2>\r\n\r\n\r\n\r\n

B\u1ed9 Ti\u1ebfp \u0110\u1ecba Di \u0110\u1ed9ng 0.4kV<\/strong><\/h3>\r\n\r\n\r\n\r\n

B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 0.4kV<\/strong> l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i b\u1ed9 ti\u1ebfp \u0111\u1ecba h\u1ea1 th\u1ebf ph\u1ed5 bi\u1ebfn, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu trong c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n h\u1ea1 th\u1ebf (d\u01b0\u1edbi 1kV). \u0110\u00e2y c\u0169ng l\u00e0 c\u1ea5p c\u00f3 nhi\u1ec1u l\u01b0\u1ee3t thao t\u00e1c nh\u1ea5t trong ng\u00e0y, v\u00e0 l\u00e0 c\u1ea5p hay b\u1ecb b\u1ecf qua nh\u1ea5t v\u00ec con s\u1ed1 380 V nghe quen tai h\u01a1n nhi\u1ec1u so v\u1edbi 22 kV.<\/p>\r\n\r\n\r\n\r\n

\u0110\u1eb7c \u0111i\u1ec3m v\u00e0 c\u1ea5u t\u1ea1o<\/strong> c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 0.4kV<\/strong> th\u01b0\u1eddng g\u1ed3m d\u00e2y \u0111\u1ed3ng b\u1ec7n m\u1ec1m, ti\u1ebft di\u1ec7n v\u00e0 th\u1eddi gian ch\u1ecbu d\u00f2ng ng\u1eafn m\u1ea1ch ghi r\u00f5 tr\u00ean nh\u00e3n c\u1ee7a t\u1eebng b\u1ed9; con s\u1ed1 n\u00e0y ph\u1ea3i l\u1edbn h\u01a1n d\u00f2ng ng\u1eafn m\u1ea1ch t\u00ednh to\u00e1n t\u1ea1i \u0111i\u1ec3m l\u00e0m vi\u1ec7c m\u1edbi d\u00f9ng \u0111\u01b0\u1ee3c. V\u1ecf d\u00e2y th\u01b0\u1eddng \u0111\u1ec3 trong su\u1ed1t, kh\u00f4ng ph\u1ea3i cho \u0111\u1eb9p m\u00e0 \u0111\u1ec3 soi \u0111\u01b0\u1ee3c s\u1ee3i \u0111\u1ed3ng \u0111\u1ee9t b\u00ean trong: d\u00e2y b\u1ec7n g\u00e3y d\u1ea7n t\u1eebng s\u1ee3i sau nhi\u1ec1u l\u1ea7n cu\u1ed1n v\u00e0 k\u00e9o l\u00ea tr\u00ean n\u1ec1n, m\u00e0 m\u1ed9t b\u00f3 \u0111\u00e3 m\u1ea5t m\u1ed9t ph\u1ea7n s\u1ed1 s\u1ee3i th\u00ec ti\u1ebft di\u1ec7n ghi tr\u00ean nh\u00e3n kh\u00f4ng c\u00f2n \u0111\u00fang n\u1eefa. Soi d\u1ecdc th\u00e2n d\u00e2y tr\u01b0\u1edbc m\u1ed7i l\u1ea7n d\u00f9ng m\u1ea5t ch\u01b0a t\u1edbi m\u1ed9t ph\u00fat.<\/p>\r\n\r\n\r\n\r\n

\u1ee8ng d\u1ee5ng<\/strong> c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 0.4kV r\u1ea5t r\u1ed9ng r\u00e3i trong c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n h\u1ea1 th\u1ebf nh\u01b0: l\u1eafp \u0111\u1eb7t tr\u1ea1m bi\u1ebfn \u00e1p, b\u1ea3o tr\u00ec h\u1ec7 th\u1ed1ng \u0111i\u1ec7n trong khu c\u00f4ng nghi\u1ec7p, v\u00e0 c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng nh\u1ecf kh\u00e1c. Khi nghi\u1ec7m thu, n\u00ean y\u00eau c\u1ea7u nh\u00e0 cung c\u1ea5p n\u00eau r\u00f5 b\u1ed9 ti\u1ebfp \u0111\u1ecba th\u1eed theo ti\u00eau chu\u1ea9n n\u00e0o v\u00e0 \u1edf m\u1ee9c d\u00f2ng ng\u1eafn m\u1ea1ch bao nhi\u00eau, thay v\u00ec ch\u1ea5p nh\u1eadn d\u00f2ng ch\u1eef \u0111\u1ea1t ti\u00eau chu\u1ea9n ng\u00e0nh \u0111i\u1ec7n kh\u00f4ng k\u00e8m s\u1ed1 hi\u1ec7u.<\/p>\r\n\r\n\r\n\r\n

C\u1ea7n ph\u00e2n bi\u1ec7t r\u00f5 hai nh\u00f3m chi ti\u1ebft tr\u00ean c\u00f9ng m\u1ed9t b\u1ed9: ph\u1ea7n d\u00e2y, m\u1ecf k\u1eb9p v\u00e0 c\u1ecdc ph\u1ea3i d\u1eabn \u0111i\u1ec7n<\/strong> th\u1eadt t\u1ed1t, c\u00f2n ph\u1ea7n s\u00e0o thao t\u00e1c v\u00e0 tay c\u1ea7m ph\u1ea3i c\u00e1ch \u0111i\u1ec7n<\/strong>. \u0110\u1ea3o l\u1eabn hai y\u00eau c\u1ea7u n\u00e0y l\u00e0 l\u1ed7i hay g\u1eb7p khi \u0111\u1ecdc b\u00e1o gi\u00e1, v\u00ec c\u00f9ng m\u1ed9t b\u1ed9 m\u00e0 hai nh\u00f3m v\u1eadt li\u1ec7u c\u00f3 m\u1ee5c \u0111\u00edch ng\u01b0\u1ee3c nhau.<\/p>\r\n\r\n\r\n\n

\"B\u1ed9
M\u1ecf k\u1eb9p ph\u1ea3i c\u1eafn \u0111\u01b0\u1ee3c v\u00e0o d\u00e2y tr\u1ea7n v\u00e0 si\u1ebft ch\u1eb7t, \u0111\u00e2y l\u00e0 \u0111i\u1ec3m ti\u1ebfp x\u00fac quy\u1ebft \u0111\u1ecbnh c\u1ea3 b\u1ed9<\/em><\/figcaption><\/figure>\n\n\n\r\n

B\u1ed9 Ti\u1ebfp \u0110\u1ecba Di \u0110\u1ed9ng 10kV<\/strong><\/h3>\r\n\r\n\r\n\r\n

B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 10kV<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf d\u00e0nh ri\u00eang cho c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n trung th\u1ebf, v\u1edbi \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng t\u1eeb 6kV \u0111\u1ebfn 24kV. V\u1edbi \u0111i\u1ec7n \u00e1p cao h\u01a1n, b\u1ed9 ti\u1ebfp \u0111\u1ecba n\u00e0y c\u00f3 c\u1ea5u t\u1ea1o v\u00e0 t\u00ednh n\u0103ng \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 b\u1ea3o v\u1ec7 ng\u01b0\u1eddi lao \u0111\u1ed9ng kh\u1ecfi nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt.<\/p>\r\n\r\n\r\n\r\n

T\u00ednh n\u0103ng v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m<\/strong> c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 10kV<\/strong> bao g\u1ed3m d\u00e2y nh\u00e1nh l\u00e0m t\u1eeb \u0111\u1ed3ng \u0111\u1ecf c\u00f3 ti\u1ebft di\u1ec7n l\u1edbn (16mm\u00b2) v\u00e0 chi\u1ec1u d\u00e0i l\u00ean \u0111\u1ebfn 1.2m, c\u00f9ng v\u1edbi d\u00e2y ch\u00ednh d\u00e0i 8m c\u0169ng b\u1eb1ng \u0111\u1ed3ng \u0111\u1ecf. C\u00e1c m\u1ecf k\u1eb9p l\u00e0m b\u1eb1ng \u0111\u1ed3ng v\u00e0ng, c\u00f2n c\u1ecdc ti\u1ebfp \u0111\u1ea5t b\u1eb1ng th\u00e9p \u0111\u01b0\u1eddng k\u00ednh 14mm, d\u00e0i 1m. C\u1ecdc n\u00e0y ch\u1ec9 d\u00f9ng khi hi\u1ec7n tr\u01b0\u1eddng kh\u00f4ng c\u00f3 s\u1eb5n \u0111i\u1ec3m n\u1ed1i \u0111\u1ea5t; \u1edf trong tr\u1ea1m th\u00ec \u0111\u1ea7u d\u00e2y ph\u1ea3i b\u1eaft th\u1eb3ng v\u00e0o l\u01b0\u1edbi ti\u1ebfp \u0111\u1ea5t c\u1ee7a tr\u1ea1m, v\u00ec m\u1ed9t c\u00e2y c\u1ecdc \u0111\u00f3ng v\u1ed9i xu\u1ed1ng n\u1ec1n kh\u00f4 cho \u0111i\u1ec7n tr\u1edf t\u1ea3n cao h\u01a1n h\u1eb3n l\u01b0\u1edbi c\u00f3 s\u1eb5n.<\/p>\r\n\r\n\r\n\r\n

\u1ee8ng d\u1ee5ng<\/strong> c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 10kV ch\u1ee7 y\u1ebfu trong c\u00e1c c\u00f4ng tr\u00ecnh l\u01b0\u1edbi \u0111i\u1ec7n trung th\u1ebf, n\u01a1i m\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p t\u1eeb 6kV \u0111\u1ebfn 24kV. \u1ede c\u1ea5p n\u00e0y kho\u1ea3ng c\u00e1ch an to\u00e0n b\u1eaft \u0111\u1ea7u chi ph\u1ed1i c\u00e1ch l\u00e0m: ng\u01b0\u1eddi th\u1ee3 kh\u00f4ng v\u1edbi tay t\u1edbi \u0111i\u1ec3m k\u1eb9p m\u00e0 ph\u1ea3i \u0111\u01b0a m\u1ecf k\u1eb9p l\u00ean b\u1eb1ng s\u00e0o. Chi\u1ec1u d\u00e0i s\u00e0o v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee5m m\u1ecf k\u1eb9p v\u00ec th\u1ebf tr\u1edf th\u00e0nh hai th\u00f4ng s\u1ed1 ph\u1ea3i ch\u1ed1t l\u00fac \u0111\u1eb7t h\u00e0ng, v\u00ec m\u1ed9t c\u1ee5m k\u1eb9p n\u1eb7ng \u0111\u01b0a l\u00ean \u0111\u1ea7u s\u00e0o b\u1ed1n m\u00e9t th\u00ec m\u1ed9t ng\u01b0\u1eddi kh\u00f3 gi\u1eef th\u1eb3ng \u0111\u1ee7 l\u00e2u \u0111\u1ec3 si\u1ebft.<\/p>\r\n\r\n\r\n\r\n

B\u1ed9 Ti\u1ebfp \u0110\u1ecba Di \u0110\u1ed9ng Kh\u00e1c<\/strong><\/h3>\r\n\r\n\r\n\r\n
\"B\u1ed9
B\u1ed9 ba pha c\u00f3 ba nh\u00e1nh k\u1eb9p v\u00e0o ba pha r\u1ed3i gom v\u1ec1 m\u1ed9t d\u00e2y ch\u00ednh d\u1eabn xu\u1ed1ng c\u1ecdc \u0111\u1ea5t<\/em><\/figcaption><\/figure>\r\n\r\n\r\n\r\n

C\u00e1c lo\u1ea1i b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 35kV<\/strong>, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 110kV<\/strong>, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 220kV<\/strong>, v\u00e0 b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 500kV<\/strong> l\u00e0 c\u00e1c thi\u1ebft b\u1ecb ti\u1ebfp \u0111\u1ecba chuy\u00ean d\u1ee5ng cho c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n cao th\u1ebf, v\u1edbi \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng t\u1eeb 35kV \u0111\u1ebfn 500kV. C\u00e1c b\u1ed9 ti\u1ebfp \u0111\u1ecba n\u00e0y \u0111\u00f3ng vai tr\u00f2 c\u1ef1c k\u1ef3 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o v\u1ec7 an to\u00e0n cho c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n l\u1edbn v\u00e0 m\u1ea1ng l\u01b0\u1edbi \u0111i\u1ec7n qu\u1ed1c gia.<\/p>\r\n\r\n\r\n\r\n

S\u1ef1 kh\u00e1c bi\u1ec7t v\u00e0 \u1ee9ng d\u1ee5ng<\/strong> gi\u1eefa c\u00e1c lo\u1ea1i b\u1ed9 ti\u1ebfp \u0111\u1ecba n\u00e0y kh\u00f4ng n\u1eb1m \u1edf \u0111i\u1ec7n \u00e1p m\u00e0 d\u00e2y ch\u1ecbu \u0111\u01b0\u1ee3c. C\u1ea7n n\u00f3i r\u00f5 ch\u1ed7 n\u00e0y v\u00ec \u0111\u1ecdc nh\u00e3n sai r\u1ea5t d\u1ec5: con s\u1ed1 kV in tr\u00ean b\u1ed9 ch\u1ec9 c\u1ea5p l\u01b0\u1edbi n\u01a1i b\u1ed9 \u0111\u01b0\u1ee3c mang t\u1edbi, kh\u00f4ng ph\u1ea3i \u0111i\u1ec7n \u00e1p m\u00e0 d\u00e2y \u0111\u1ed3ng b\u1ec7n ch\u1ecbu n\u1ed5i. D\u00e2y trong b\u1ed9 ti\u1ebfp \u0111\u1ecba l\u00e0 d\u00e2y d\u1eabn \u0111i\u1ec7n, n\u00f3 c\u00f3 m\u1eb7t \u0111\u1ec3 d\u1eabn d\u00f2ng xu\u1ed1ng \u0111\u1ea5t ch\u1ee9 kh\u00f4ng c\u00f3 l\u1edbp c\u00e1ch \u0111i\u1ec7n n\u00e0o \u0111\u1ec3 m\u00e0 n\u00f3i t\u1edbi \u0111i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng \u2014 ch\u1ec9 s\u00e0o thao t\u00e1c v\u00e0 tay c\u1ea7m m\u1edbi l\u00e0 chi ti\u1ebft c\u00e1ch \u0111i\u1ec7n. C\u1ea5p c\u00e0ng cao th\u00ec th\u1ee9 thay \u0111\u1ed5i l\u00e0 chi\u1ec1u d\u00e0i s\u00e0o v\u00e0 kho\u1ea3ng c\u00e1ch ng\u01b0\u1eddi th\u1ee3 ph\u1ea3i \u0111\u1ee9ng, c\u00f2n th\u1ee9 quy\u1ebft \u0111\u1ecbnh ti\u1ebft di\u1ec7n d\u00e2y v\u1eabn l\u00e0 d\u00f2ng ng\u1eafn m\u1ea1ch t\u1ea1i \u0111i\u1ec3m l\u00e0m vi\u1ec7c. V\u00ed d\u1ee5, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 500kV<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi c\u00e1c s\u00e0o thao t\u00e1c l\u00e0m t\u1eeb s\u1ee3i th\u1ee7y tinh ho\u1eb7c v\u1eadt li\u1ec7u nh\u1ef1a composite, gi\u00fap d\u1ec5 d\u00e0ng thao t\u00e1c v\u00e0 di chuy\u1ec3n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f4ng tr\u01b0\u1eddng \u0111i\u1ec7n l\u1edbn. C\u00e1c s\u00e0o thao t\u00e1c n\u00e0y c\u00f3 th\u1ec3 c\u00f3 chi\u1ec1u d\u00e0i l\u00ean \u0111\u1ebfn 4m, v\u00e0 b\u1ed9 ti\u1ebfp \u0111\u1ecba c\u0169ng \u0111i k\u00e8m v\u1edbi c\u1ecdc ti\u1ebfp \u0111\u1ea5t v\u00e0 k\u1eb9p d\u00e2y b\u1eb1ng h\u1ee3p kim nh\u00f4m ho\u1eb7c \u0111\u1ed3ng v\u00e0ng.<\/p>\r\n\r\n\r\n\r\n

T\u1ea7m quan tr\u1ecdng<\/strong> c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng cao th\u1ebf<\/strong> n\u1eb1m \u1edf kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 c\u00e1ch thao t\u00e1c. L\u00ean t\u1edbi b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 220kV<\/strong> v\u00e0 b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 500kV<\/strong>, d\u00f2ng ng\u1eafn m\u1ea1ch t\u00ednh to\u00e1n t\u1ea1i thanh c\u00e1i tr\u1ea1m c\u00f3 th\u1ec3 l\u00ean h\u00e0ng ch\u1ee5c kA, n\u00ean ti\u1ebft di\u1ec7n d\u00e2y trong b\u1ed9 t\u0103ng theo v\u00e0 m\u1ed9t b\u1ed9 ba pha \u0111\u1ea7y \u0111\u1ee7 n\u1eb7ng t\u1edbi m\u1ee9c hai ng\u01b0\u1eddi m\u1edbi khi\u00eang n\u1ed5i. \u0110\u00f3 l\u00e0 l\u00fd do c\u00e1c b\u1ed9 c\u1ea5p n\u00e0y th\u01b0\u1eddng chia th\u00e0nh nhi\u1ec1u nh\u00e1nh r\u1eddi, l\u1eafp l\u1ea7n l\u01b0\u1ee3t t\u1eebng pha thay v\u00ec k\u00e9o c\u1ea3 c\u1ee5m l\u00ean m\u1ed9t l\u1ea7n.<\/p>\r\n\r\n\r\n\r\n

Trong c\u00e1c c\u00f4ng tr\u00ecnh l\u01b0\u1edbi \u0111i\u1ec7n qu\u1ed1c gia, n\u01a1i m\u00e0 c\u00e1c tuy\u1ebfn \u0111i\u1ec7n c\u00f3 \u0111i\u1ec7n \u00e1p r\u1ea5t cao, vi\u1ec7c s\u1eed d\u1ee5ng b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 110kV<\/strong>, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 220kV<\/strong> v\u00e0 b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 500kV<\/strong> \u0111\u1ed1i m\u1eb7t v\u1edbi m\u1ed9t t\u00ecnh hu\u1ed1ng ri\u00eang: \u0111o\u1ea1n d\u00e2y \u0111\u00e3 c\u1eaft \u0111i\u1ec7n v\u1eabn nh\u1eadn \u0111i\u1ec7n \u00e1p c\u1ea3m \u1ee9ng t\u1eeb c\u00e1c m\u1ea1ch ch\u1ea1y song song tr\u00ean c\u00f9ng h\u00e0ng c\u1ed9t, tuy\u1ebfn c\u00e0ng d\u00e0i v\u00e0 c\u00e0ng g\u1ea7n m\u1ea1ch \u0111ang v\u1eadn h\u00e0nh th\u00ec m\u1ee9c c\u1ea3m \u1ee9ng c\u00e0ng l\u1edbn. Tr\u00ean l\u01b0\u1edbi truy\u1ec1n t\u1ea3i, \u0111\u00e2y m\u1edbi l\u00e0 vi\u1ec7c b\u1ed9 ti\u1ebfp \u0111\u1ecba l\u00e0m th\u01b0\u1eddng xuy\u00ean nh\u1ea5t, th\u01b0\u1eddng xuy\u00ean h\u01a1n nhi\u1ec1u so v\u1edbi chuy\u1ec7n c\u00f3 ai \u0111\u00f3 \u0111\u00f3ng nh\u1ea7m dao c\u00e1ch ly.<\/p>\r\n\r\n\r\n\r\n

Khi \u0111\u1eb7t h\u00e0ng, hai con s\u1ed1 c\u1ea7n ch\u1ed1t l\u00e0 d\u00f2ng ng\u1eafn m\u1ea1ch t\u00ednh b\u1eb1ng kA v\u00e0 th\u1eddi gian ch\u1ecbu d\u00f2ng t\u00ednh b\u1eb1ng gi\u00e2y; nh\u00e3n th\u01b0\u1eddng ghi li\u1ec1n nhau theo ki\u1ec3u 25 kA trong 1 gi\u00e2y. Thi\u1ebfu v\u1ebf th\u1eddi gian th\u00ec con s\u1ed1 kA kh\u00f4ng \u0111\u1ecdc \u0111\u01b0\u1ee3c, v\u00ec c\u00f9ng m\u1ed9t b\u1ed9 d\u00e2y ch\u1ecbu \u0111\u01b0\u1ee3c 25 kA trong 0,5 gi\u00e2y c\u00f3 th\u1ec3 ch\u00e1y \u1edf 25 kA trong 1 gi\u00e2y.<\/p>\r\n\r\n\r\n\r\n

C\u1ea5u H\u00ecnh Ba Trong M\u1ed9t G\u1ed3m Nh\u1eefng G\u00ec<\/h2>\r\n\r\n\r\n\r\n

T\u00ednh An To\u00e0n Cao<\/strong><\/h3>\r\n\r\n\r\n\r\n

M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t khi s\u1eed d\u1ee5ng b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> l\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 an to\u00e0n cho ng\u01b0\u1eddi lao \u0111\u1ed9ng. Vi\u1ec7c l\u00e0m vi\u1ec7c v\u1edbi \u0111i\u1ec7n lu\u00f4n ti\u1ec1m \u1ea9n nh\u1eefng r\u1ee7i ro l\u1edbn nh\u01b0 \u0111i\u1ec7n gi\u1eadt ho\u1eb7c ch\u00e1y n\u1ed5, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c c\u00f4ng tr\u00ecnh s\u1eeda ch\u1eefa, b\u1ea3o tr\u00ec \u0111i\u1ec7n l\u01b0\u1edbi. B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> n\u1ed1i \u0111o\u1ea1n d\u00e2y \u0111\u00e3 c\u1eaft \u0111i\u1ec7n xu\u1ed1ng \u0111\u1ea5t b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn tr\u1edf kh\u00e1ng th\u1ea5p, \u0111\u1ec3 n\u1ebfu \u0111i\u1ec7n \u00e1p quay tr\u1edf l\u1ea1i th\u00ec d\u00f2ng ng\u1eafn m\u1ea1ch ch\u1ea1y qua b\u1ed9 ti\u1ebfp \u0111\u1ecba ch\u1ee9 kh\u00f4ng qua ng\u01b0\u1eddi th\u1ee3.<\/p>\r\n\r\n\r\n\r\n

Khi s\u1eed d\u1ee5ng b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 3 pha<\/strong>, ba pha \u0111\u01b0\u1ee3c n\u1ed1i chung l\u1ea1i v\u1edbi nhau r\u1ed3i m\u1edbi n\u1ed1i chung xu\u1ed1ng \u0111\u1ea5t, ch\u1ee9 kh\u00f4ng ph\u1ea3i m\u1ed7i pha c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng xu\u1ed1ng \u0111\u1ea5t ri\u00eang. N\u1ed1i chung nh\u01b0 v\u1eady k\u00e9o ba d\u00e2y v\u1ec1 c\u00f9ng m\u1ed9t \u0111i\u1ec7n th\u1ebf, n\u00ean n\u1ebfu \u0111i\u1ec7n \u00e1p quay l\u1ea1i th\u00ec gi\u1eefa ba d\u00e2y kh\u00f4ng c\u00f2n ch\u00eanh l\u1ec7ch \u0111\u1ec3 t\u1ea1o d\u00f2ng ch\u1ea1y qua ng\u01b0\u1eddi th\u1ee3 \u0111ang ch\u1ea1m v\u00e0o hai d\u00e2y kh\u00e1c nhau. D\u00f2ng ng\u1eafn m\u1ea1ch l\u1edbn ch\u1ea1y qua b\u1ed9 ti\u1ebfp \u0111\u1ecba c\u0169ng l\u00e0 t\u00edn hi\u1ec7u \u0111\u1ec3 r\u01a1 le b\u1ea3o v\u1ec7 \u1edf \u0111\u1ea7u ngu\u1ed3n t\u00e1c \u0111\u1ed9ng c\u1eaft tuy\u1ebfn, r\u00fat ng\u1eafn th\u1eddi gian \u0111o\u1ea1n d\u00e2y c\u00f3 \u0111i\u1ec7n tr\u1edf l\u1ea1i.<\/p>\r\n\r\n\r\n\n

\"B\u1ed9
C\u1ea5p \u0111i\u1ec7n \u00e1p c\u00e0ng cao th\u00ec s\u00e0o thao t\u00e1c c\u00e0ng d\u00e0i, ng\u01b0\u1eddi th\u1ee3 \u0111\u1ee9ng c\u00e0ng xa \u0111i\u1ec3m k\u1eb9p<\/em><\/figcaption><\/figure>\n\n\n\r\n

Ti\u1ec7n L\u1ee3i V\u00e0 D\u1ec5 S\u1eed D\u1ee5ng<\/strong><\/h3>\r\n\r\n\r\n\r\n

B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng<\/strong> 3 trong 1 ngh\u0129a l\u00e0 m\u1ed9t b\u1ed9 d\u00f9ng chung cho ba nh\u00f3m c\u1ea5p \u0111i\u1ec7n \u00e1p, nh\u1edd s\u00e0o thao t\u00e1c n\u1ed1i d\u00e0i \u0111\u01b0\u1ee3c v\u00e0 c\u1ee5m m\u1ecf k\u1eb9p th\u00e1o r\u1eddi thay theo c\u1ee1 d\u00e2y. C\u00e1i \u0111\u01b0\u1ee3c l\u00e0 t\u1ed5 c\u00f4ng t\u00e1c \u0111i m\u1ed9t chuy\u1ebfn xe cho c\u1ea3 ng\u00e0y l\u00e0m nhi\u1ec1u v\u1ecb tr\u00ed kh\u00e1c c\u1ea5p. C\u00e1i m\u1ea5t l\u00e0 m\u1ed7i l\u1ea7n \u0111\u1ed5i c\u1ea5p ph\u1ea3i l\u1eafp l\u1ea1i s\u00e0o, v\u00e0 m\u1ed7i m\u1ed1i n\u1ed1i th\u00eam v\u00e0o l\u00e0 m\u1ed9t \u0111i\u1ec3m n\u1eefa c\u00f3 th\u1ec3 l\u1ecfng gi\u1eefa ch\u1eebng.<\/p>\r\n\r\n\r\n\r\n

M\u1ecf k\u1eb9p si\u1ebft b\u1eb1ng ch\u00ednh \u0111\u1ea7u s\u00e0o thao t\u00e1c n\u00ean kh\u00f4ng c\u1ea7n c\u1edd l\u00ea, nh\u01b0ng ph\u1ea3i si\u1ebft cho t\u1edbi khi ren \u0103n h\u1ebft ch\u1ee9 kh\u00f4ng d\u1eebng \u1edf m\u1ee9c v\u1eeba ch\u1ea1m d\u00e2y. M\u1ed9t m\u1ecf k\u1eb9p si\u1ebft h\u1ee5t nh\u00ecn t\u1eeb d\u01b0\u1edbi \u0111\u1ea5t v\u1eabn gi\u1ed1ng h\u1ec7t m\u1ecf k\u1eb9p \u0111\u00e3 si\u1ebft ch\u1eb7t, v\u00e0 ch\u1ec9 l\u1ed9 ra khi c\u00f3 d\u00f2ng ch\u1ea1y qua \u2014 l\u00fac \u0111\u00f3 th\u00ec m\u1ed1i n\u1ed1i ch\u00e1y \u0111\u1ee9t tr\u01b0\u1edbc c\u1ea3 khi r\u01a1 le k\u1ecbp c\u1eaft tuy\u1ebfn.<\/p>\r\n\r\n\r\n\r\n

\u0110a N\u0103ng V\u00e0 Linh Ho\u1ea1t<\/strong><\/h3>\r\n\r\n\r\n\r\n

M\u1ed9t trong nh\u1eefng \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 3 trong 1<\/strong> l\u00e0 t\u00ednh \u0111a n\u0103ng v\u00e0 linh ho\u1ea1t. B\u1ed9 ti\u1ebfp \u0111\u1ecba n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u1edf nhi\u1ec1u m\u1ee9c \u0111i\u1ec7n \u00e1p kh\u00e1c nhau, t\u1eeb b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 0.4kV<\/strong>, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 110kV<\/strong>, \u0111\u1ebfn c\u00e1c lo\u1ea1i b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 220kV<\/strong> hay b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 500kV<\/strong>.<\/p>\r\n\r\n\r\n\r\n

\u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ed9 ti\u1ebfp \u0111\u1ecba c\u00f3 th\u1ec3 \u1ee9ng d\u1ee5ng trong h\u1ea7u h\u1ebft c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n, t\u1eeb c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n h\u1ea1 th\u1ebf \u0111\u1ebfn c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n cao th\u1ebf, bao g\u1ed3m c\u1ea3 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n trong c\u00f4ng nghi\u1ec7p, c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng ho\u1eb7c c\u00e1c s\u1ef1 ki\u1ec7n di \u0111\u1ed9ng y\u00eau c\u1ea7u s\u1ef1 linh ho\u1ea1t.<\/p>\r\n\r\n\r\n\r\n

\u0110\u1ed5i l\u1ea1i, d\u00f9ng chung m\u1ed9t b\u1ed9 cho nhi\u1ec1u c\u1ea5p th\u00ec r\u1ee7i ro c\u0169ng d\u1ed3n v\u1ec1 m\u1ed9t ch\u1ed7: ch\u1ec9 c\u1ea7n m\u1ed9t l\u1ea7n g\u00e1nh d\u00f2ng \u1edf b\u1ea5t k\u1ef3 c\u1ea5p n\u00e0o l\u00e0 c\u1ea3 b\u1ed9 ra kh\u1ecfi danh m\u1ee5c d\u00f9ng \u0111\u01b0\u1ee3c, kh\u00f4ng gi\u1eef l\u1ea1i ph\u1ea7n ch\u01b0a d\u00ednh s\u1ef1 c\u1ed1. \u0110\u01a1n v\u1ecb \u0111i nhi\u1ec1u tuy\u1ebfn trong ng\u00e0y n\u00ean t\u00ednh tr\u01b0\u1edbc chuy\u1ec7n n\u00e0y khi quy\u1ebft \u0111\u1ecbnh mua m\u1ed9t b\u1ed9 ba trong m\u1ed9t hay ba b\u1ed9 ri\u00eang.<\/p>\r\n\r\n\r\n\r\n

T\u00f3m l\u1ea1i, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 3 trong 1<\/strong> mang l\u1ea1i cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb an to\u00e0n, d\u1ec5 s\u1eed d\u1ee5ng v\u00e0 r\u1ea5t linh ho\u1ea1t, \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u cao trong c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n, gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng b\u1ed9 ph\u1ea3i mang theo xe khi m\u1ed9t t\u1ed5 c\u00f4ng t\u00e1c ph\u1ea3i \u0111i nhi\u1ec1u c\u1ea5p \u0111i\u1ec7n \u00e1p trong c\u00f9ng m\u1ed9t ca.<\/p>\r\n\r\n\r\n\r\n

Ch\u1ecdn B\u1ed9 Ti\u1ebfp \u0110\u1ecba V\u00e0 Ki\u1ec3m Tra Tr\u01b0\u1edbc Khi Nh\u1eadn<\/h2>\r\n\r\n\r\n\r\n

L\u1ee3i \u00cdch B\u1ed9 Ti\u1ebfp \u0110\u1ecba Di \u0110\u1ed9ng<\/strong><\/h3>\r\n\r\n\r\n\r\n

B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng mang l\u1ea1i r\u1ea5t nhi\u1ec1u l\u1ee3i \u00edch cho c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n, \u0111\u1eb7c bi\u1ec7t trong vi\u1ec7c b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1eddi lao \u0111\u1ed9ng. M\u1ed9t trong nh\u1eefng l\u1ee3i \u00edch l\u1edbn nh\u1ea5t l\u00e0 d\u00f9ng chung \u0111\u01b0\u1ee3c cho nhi\u1ec1u c\u1ea5p \u0111i\u1ec7n \u00e1p, gi\u1ea3m s\u1ed1 m\u00f3n ph\u1ea3i mua trong danh m\u1ee5c thi\u1ebft b\u1ecb an to\u00e0n \u0111i\u1ec7n<\/a> c\u1ee7a \u0111\u01a1n v\u1ecb. D\u00f9 l\u00e0 c\u00f4ng tr\u00ecnh \u0111i\u1ec7n h\u1ea1 th\u1ebf, trung th\u1ebf hay cao th\u1ebf, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 3 pha c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u k\u1ebft n\u1ed1i \u0111\u1ea5t t\u1ea1m th\u1eddi cho h\u1ec7 th\u1ed1ng \u0111i\u1ec7n, b\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb kh\u1ecfi c\u00e1c s\u1ef1 c\u1ed1 kh\u00f4ng mong mu\u1ed1n nh\u01b0 \u0111i\u1ec7n gi\u1eadt, ch\u00e1y n\u1ed5.<\/p>\r\n\r\n\r\n\r\n

Nh\u1edd v\u00e0o t\u00ednh linh ho\u1ea1t trong vi\u1ec7c s\u1eed d\u1ee5ng cho nhi\u1ec1u m\u1ee9c \u0111i\u1ec7n \u00e1p kh\u00e1c nhau, t\u1eeb b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 0.4kV \u0111\u1ebfn c\u00e1c b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 220kV hay b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng 110kV, b\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng s\u1ebd gi\u00fap b\u1ea1n duy tr\u00ec m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n.<\/p>\r\n\r\n\r\n\r\n

\"B\u1ed9
Cu\u1ed9n g\u1ecdn v\u00e0o t\u00fai sau m\u1ed7i ca gi\u00fap d\u00e2y \u0111\u1ed3ng b\u1ec7n kh\u00f4ng b\u1ecb g\u1ea5p g\u00e3y v\u00e0 m\u1ecf k\u1eb9p kh\u00f4ng va \u0111\u1eadp<\/em><\/figcaption><\/figure>\r\n\r\n\r\n\r\n

Sau m\u1ed7i ca, d\u00e2y ph\u1ea3i cu\u1ed9n theo v\u00f2ng l\u1edbn v\u00e0 c\u1ea5t v\u00e0o t\u00fai ch\u1ee9 kh\u00f4ng v\u1eaft l\u00ean m\u00f3c hay qu\u0103ng chung th\u00f9ng \u0111\u1ed3 ngh\u1ec1. G\u1ea5p g\u00e3y l\u00e0m \u0111\u1ee9t s\u1ee3i b\u00ean trong m\u00e0 b\u00ean ngo\u00e0i kh\u00f4ng th\u1ea5y g\u00ec; \u0111\u1ec3 l\u1eabn v\u1edbi \u0111\u1ed3 ngh\u1ec1 th\u00ec m\u1ecf k\u1eb9p b\u1ecb va l\u00e0m l\u1ec7ch ng\u00e0m, l\u1ea7n sau \u0111\u01b0a l\u00ean c\u1ed9t m\u1edbi bi\u1ebft l\u00e0 k\u1eb9p kh\u00f4ng \u0103n. T\u00fai \u0111\u1ef1ng \u0111i k\u00e8m l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a b\u1ed9, kh\u00f4ng ph\u1ea3i bao b\u00ec b\u1ecf \u0111i sau l\u1ea7n m\u1edf h\u00e0ng.<\/p>\r\n\r\n\r\n\r\n

\u0110\u1ea3m B\u1ea3o Ch\u1ea5t L\u01b0\u1ee3ng V\u00e0 Hi\u1ec7u Qu\u1ea3<\/strong><\/h3>\r\n\r\n\r\n\r\n

D\u00f2ng ch\u1eef h\u00e0ng s\u1ea3n xu\u1ea5t theo ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf t\u1ef1 n\u00f3 kh\u00f4ng ki\u1ec3m \u0111\u01b0\u1ee3c. Th\u1ee9 ki\u1ec3m \u0111\u01b0\u1ee3c l\u00e0 bi\u00ean b\u1ea3n th\u1eed c\u1ee7a ch\u00ednh l\u00f4 h\u00e0ng: IEC 61230 y\u00eau c\u1ea7u th\u1eed d\u00f2ng ng\u1eafn m\u1ea1ch tr\u00ean m\u1eabu v\u00e0 ghi l\u1ea1i m\u1ee9c d\u00f2ng c\u00f9ng th\u1eddi gian ch\u1ecbu, n\u00ean h\u1ed3 s\u01a1 ph\u1ea3i c\u00f3 hai con s\u1ed1 \u0111\u00f3 ch\u1ee9 kh\u00f4ng ch\u1ec9 c\u00f3 t\u00ean ti\u00eau chu\u1ea9n. Kh\u00f4ng c\u00f3 bi\u00ean b\u1ea3n th\u00ec b\u1ed9 ti\u1ebfp \u0111\u1ecba ch\u1ec9 l\u00e0 m\u1ea5y \u0111o\u1ea1n d\u00e2y \u0111\u1ed3ng b\u1ec7n v\u00e0 ba c\u00e1i m\u1ecf k\u1eb9p.<\/p>\r\n\r\n\r\n\r\n

Khi nh\u1eadn h\u00e0ng, n\u00ean y\u00eau c\u1ea7u t\u00e0i li\u1ec7u ghi r\u00f5 s\u1ed1 hi\u1ec7u ti\u00eau chu\u1ea9n m\u00e0 b\u1ed9 ti\u1ebfp \u0111\u1ecba \u0111\u01b0\u1ee3c th\u1eed, k\u00e8m m\u1ee9c d\u00f2ng ng\u1eafn m\u1ea1ch v\u00e0 th\u1eddi gian ch\u1ecbu d\u00f2ng. M\u1ed9t d\u00f2ng ch\u1eef chung chung ki\u1ec3u \u0111\u1ea1t ti\u00eau chu\u1ea9n Vi\u1ec7t Nam ho\u1eb7c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf m\u00e0 kh\u00f4ng c\u00f3 s\u1ed1 hi\u1ec7u th\u00ec kh\u00f4ng d\u00f9ng \u0111\u1ec3 so s\u00e1nh gi\u1eefa hai b\u00e1o gi\u00e1 \u0111\u01b0\u1ee3c. K\u00e8m theo \u0111\u00f3 n\u00ean c\u00f3 s\u1ed1 hi\u1ec7u l\u00f4 v\u00e0 ng\u00e0y th\u1eed, \u0111\u1ec3 sau n\u00e0y c\u00f2n tra ng\u01b0\u1ee3c \u0111\u01b0\u1ee3c b\u1ed9 n\u00e0o \u0111\u00e3 c\u00f3 m\u1eb7t \u1edf s\u1ef1 c\u1ed1 n\u00e0o.<\/p>\r\n\r\n\r\n\r\n

Cu\u1ed1i c\u00f9ng, b\u1ed9 ti\u1ebfp \u0111\u1ecba ch\u1ec9 c\u00f3 t\u00e1c d\u1ee5ng khi n\u00f3 th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c l\u1eafp l\u00ean. \u0110\u00e2y l\u00e0 m\u00f3n hay b\u1ecb b\u1ecf qua nh\u1ea5t trong trang b\u1ecb c\u1ee7a t\u1ed5 \u0111\u01b0\u1eddng d\u00e2y, v\u00ec l\u1eafp n\u00f3 m\u1ea5t th\u00eam m\u01b0\u01a1i ph\u00fat v\u00e0 v\u00ec \u0111o\u1ea1n d\u00e2y \u0111\u00e3 c\u1eaft \u0111i\u1ec7n tr\u00f4ng ch\u1eb3ng c\u00f3 g\u00ec \u0111\u00e1ng ng\u1ea1i.<\/p>\r\n","protected":false},"excerpt":{"rendered":"

B\u1ed9 Ti\u1ebfp \u0110\u1ecba Di \u0110\u1ed9ng L\u00e0m Vi\u1ec7c Theo Nguy\u00ean T\u1eafc N\u00e0o B\u1ed9 ti\u1ebfp \u0111\u1ecba di \u0111\u1ed9ng l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 quan tr\u1ecdng, gi\u00fap n\u1ed1i \u0111\u1ea5t t\u1ea1m th\u1eddi cho c\u00e1c c\u00f4ng tr\u00ecnh \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh thi c\u00f4ng, s\u1eeda ch\u1eefa, b\u1ea3o d\u01b0\u1ee1ng. V\u1edbi t\u00ednh n\u0103ng di \u0111\u1ed9ng linh ho\u1ea1t, thi\u1ebft b\u1ecb n\u00e0y c\u00f3 th\u1ec3…<\/p>\n","protected":false},"author":761,"featured_media":74549,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6919],"tags":[449,6674,6673],"class_list":["post-66291","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cac-bai-co-traffic","tag-bo-tiep-dia-di-dong","tag-bo-tiep-dia-di-dong-110kv","tag-bo-tiep-dia-di-dong-220kv"],"_links":{"self":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/66291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/users\/761"}],"replies":[{"embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/comments?post=66291"}],"version-history":[{"count":68,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/66291\/revisions"}],"predecessor-version":[{"id":96570,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/posts\/66291\/revisions\/96570"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/media\/74549"}],"wp:attachment":[{"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/media?parent=66291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/categories?post=66291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.baohoxanh.com\/blog\/wp-json\/wp\/v2\/tags?post=66291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}