{"id":2075,"date":"2025-02-28T21:49:24","date_gmt":"2025-02-28T13:49:24","guid":{"rendered":"https:\/\/led.amasly.com\/?p=2075"},"modified":"2025-03-07T22:17:24","modified_gmt":"2025-03-07T14:17:24","slug":"explosion-proof-distribution-box-standards-and-installation-issues","status":"publish","type":"post","link":"https:\/\/led.amasly.com\/vi\/explosion-proof-equipment\/explosion-proof-distribution-box-standards-and-installation-issues\/","title":{"rendered":"Ti\u00eau chu\u1ea9n v\u00e0 c\u00e1c v\u1ea5n \u0111\u1ec1 l\u1eafp \u0111\u1eb7t h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5"},"content":{"rendered":"

P<\/strong>L\u1eb7p l\u1ea1i<\/strong><\/strong><\/h2>\n\n\n\n

V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n li\u00ean t\u1ee5c c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p, kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 c\u0169ng \u0111ang gia t\u0103ng.<\/p>\n\n\n\n

H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1ecf than, tr\u1ea1m c\u1ee9u h\u1ecfa, ng\u00e0nh d\u1ea7u kh\u00ed, c\u00e1c c\u01a1 s\u1edf h\u00f3a d\u1ea7u v\u00e0 ng\u00e0nh d\u1ec7t may c\u00f9ng c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c. C\u00e1c khu v\u1ef1c d\u1ec5 ch\u00e1y v\u00e0 n\u1ed5<\/strong>. Nh\u1eefng khu v\u1ef1c n\u00e0y c\u00f3 nguy c\u01a1 cao h\u01a1n v\u1ec1 c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan \u0111\u1ebfn b\u1ea3o v\u1ec7. Do \u0111\u00f3, khi l\u1ef1a ch\u1ecdn h\u1ed9p ph\u00e2n ph\u1ed1i \u0111i\u1ec7n, c\u1ea7n ch\u00fa \u00fd h\u01a1n \u0111\u1ebfn vi\u1ec7c b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb.<\/p>\n\n\n\n

Ti\u00eau chu\u1ea9n c\u1ee5 th\u1ec3 cho h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5<\/strong><\/strong><\/h2>\n\n\n\n

I. Ti\u00eau chu\u1ea9n chung cho h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5<\/strong><\/strong><\/h3>\n\n\n\n

C\u00e1c ch\u1ec9 ti\u00eau c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t h\u1ed9p ph\u00e2n ph\u1ed1i ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt v\u00e0 y\u00eau c\u1ea7u thi\u1ebft k\u1ebf, \u0111\u1ed3ng th\u1eddi tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh c\u1ee7a ti\u00eau chu\u1ea9n th\u1ef1c hi\u1ec7n s\u1ea3n ph\u1ea9m \u0111\u1ec3 s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

T\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u thi\u1ebft k\u1ebf theo Ti\u00eau chu\u1ea9n qu\u1ed1c gia GB7251. Vi\u1ec7c s\u1ea3n xu\u1ea5t m\u1eabu ph\u1ea3i \u0111\u01b0\u1ee3c th\u00f4ng b\u00e1o cho \u0111\u01a1n v\u1ecb thi c\u00f4ng, \u0111\u01a1n v\u1ecb gi\u00e1m s\u00e1t v\u00e0 c\u00e1c nh\u00e2n vi\u00ean li\u00ean quan c\u1ee7a \u0111\u01a1n v\u1ecb thi c\u00f4ng \u0111\u1ec3 ki\u1ec3m tra v\u00e0 ch\u1ea5p thu\u1eadn tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/p>\n\n\n\n

II.<\/strong> H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 - Ph\u1ea7n th\u00e2n h\u1ed9p<\/strong><\/strong><\/h3>\n\n\n\n

H\u1ed9p ph\u00e2n ph\u1ed1i s\u1eed d\u1ee5ng h\u1ed9p th\u00e9p kh\u00f4ng g\u1ec9 (v\u1eadt li\u1ec7u th\u00e9p kh\u00f4ng g\u1ec9 l\u00e0 Baosteel 304 ho\u1eb7c cao h\u01a1n), m\u00e0u s\u1eafc l\u00e0 m\u00e0u th\u00e9p kh\u00f4ng g\u1ec9, \u0111\u1ed9 d\u00e0y c\u1ee7a h\u1ed9p kh\u00f4ng d\u01b0\u1edbi 4,0 mm.<\/p>\n\n\n\n

III.<\/strong> C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a h\u1ed9p ch\u1ed1ng ch\u00e1y n\u1ed5<\/strong><\/strong><\/h3>\n\n\n\n

C\u00e1c th\u00e0nh ph\u1ea7n \u0111i\u1ec7n trong h\u1ed9p ph\u00e2n ph\u1ed1i\/t\u1ee7 \u0111i\u1ec7n ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh li\u00ean quan v\u00e0 ph\u1ea3i duy tr\u00ec kho\u1ea3ng c\u00e1ch c\u00e1ch \u0111i\u1ec7n v\u00e0 kho\u1ea3ng c\u00e1ch lan truy\u1ec1n \u0111i\u1ec7n d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng b\u00ecnh th\u01b0\u1eddng; c\u00e1c d\u00e2y d\u1eabn v\u00e0 \u0111\u1ea7u n\u1ed1i mang \u0111i\u1ec7n l\u1ed9 ra ngo\u00e0i trong h\u1ed9p, kho\u1ea3ng c\u00e1ch c\u00e1ch \u0111i\u1ec7n v\u00e0 kho\u1ea3ng c\u00e1ch lan truy\u1ec1n \u0111i\u1ec7n ho\u1eb7c \u0111i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng va \u0111\u1eadp c\u1ee7a ch\u00fang ph\u1ea3i \u00edt nh\u1ea5t tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh li\u00ean quan c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n \u0111i\u1ec7n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi ch\u00fang.<\/p>\n\n\n\n

VI.<\/strong> D\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p nh\u00f3m h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5<\/strong><\/strong><\/h3>\n\n\n\n

T\u1ea5t c\u1ea3 c\u00e1c bulong v\u00e0 \u0111ai \u1ed1c \u0111\u1ec1u s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 ph\u1eadn m\u1ea1 k\u1ebdm. H\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n ph\u1ee5 c\u1ea7n s\u1eed d\u1ee5ng d\u00e2y m\u00e0u \u0111en v\u00e0 th\u00eam v\u1ecf b\u1ecdc theo th\u1ee9 t\u1ef1; h\u1ed9p \u0111o l\u01b0\u1eddng trong d\u00e2y d\u1eabn ph\u1ea3i \u0111\u01b0\u1ee3c m\u1ea1 k\u1ebdm b\u1eb1ng s\u01a1n men; h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n trong h\u1ed9p ph\u00e2n ph\u1ed1i nhi\u1ec1u l\u1edbp n\u00ean \u0111\u01b0\u1ee3c xem x\u00e9t s\u1eed d\u1ee5ng \u1ed1ng d\u1eabn v\u00e0o v\u00e0 ra.<\/p>\n\n\n\n

C\u00e1c \u0111\u1ea7u n\u1ed1i c\u1ee7a c\u00f4ng t\u1eafc ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn sao cho ph\u00f9 h\u1ee3p v\u1edbi ti\u1ebft di\u1ec7n d\u00e2y; vi\u1ec7c \u0111i d\u00e2y sau khi l\u1eafp \u0111\u1eb7t linh ki\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp g\u1ecdn g\u00e0ng v\u00e0 bu\u1ed9c th\u00e0nh b\u00f3 b\u1eb1ng b\u0103ng nylon, sau \u0111\u00f3 c\u1ed1 \u0111\u1ecbnh ph\u00eda sau b\u1ea3ng m\u1ea1ch.<\/p>\n\n\n\n

C\u00e1c quy t\u1eafc c\u1ea5m k\u1ef5 khi s\u1eed d\u1ee5ng h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5<\/strong><\/strong><\/h2>\n\n\n\n

I. S\u1eed d\u1ee5ng v\u1eadt li\u1ec7u g\u1ed7 kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd ch\u1ed1ng ch\u00e1y<\/strong><\/strong><\/h3>\n\n\n\n

H\u1eadu qu\u1ea3<\/strong>H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) n\u1ebfu \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng g\u1ed7 trong m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt v\u00e0 b\u1ee5i b\u1ea9n, d\u1ec5 b\u1ecb m\u1ed1c, r\u00f2 r\u1ec9; ngo\u00e0i ra, h\u1ed9p g\u1ed7 (b\u1ea3ng) kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd ch\u1ed1ng ch\u00e1y, d\u1ec5 g\u00e2y ch\u00e1y, l\u00e0 m\u1ed1i nguy hi\u1ec3m v\u1ec1 an to\u00e0n.<\/p>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p<\/strong>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1eed d\u1ee5ng an to\u00e0n, H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) l\u00e0 <\/strong>y\u00eau c\u1ea7u Kh\u00f4ng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb v\u1eadt li\u1ec7u d\u1ec5 ch\u00e1y.<\/strong> Ngay c\u1ea3 \u1edf nh\u1eefng n\u01a1i kh\u00f4 r\u00e1o, kh\u00f4ng b\u1ee5i, c\u00e1c h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 b\u1eb1ng g\u1ed7 (b\u1ea3ng) v\u1eabn ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y tr\u01b0\u1edbc khi s\u1eed d\u1ee5ng.<\/p>\n\n\n\n

II.<\/strong> H\u1ed9p ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o hi\u1ec7n tr\u01b0\u1eddng nh\u01b0ng ch\u01b0a \u0111\u01b0\u1ee3c ki\u1ec3m tra.<\/strong><\/strong><\/h3>\n\n\n\n

H\u1eadu qu\u1ea3<\/strong>: H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m tra, sau khi l\u1eafp \u0111\u1eb7t, th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y \u1edf t\u1ea7ng hai m\u00e0 kh\u00f4ng c\u00f3 bulong ti\u1ebfp \u0111\u1ea5t \u0111\u1eb7c bi\u1ec7t, d\u00e2y ti\u1ebfp \u0111\u1ea5t b\u1ea3o v\u1ec7 c\u00f3 ti\u1ebft di\u1ec7n nh\u1ecf, c\u00f3 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n c\u00f3 th\u1ec3 m\u1edf c\u1eeda v\u00e0 d\u00e2y \u0111\u1ed3ng linh ho\u1ea1t c\u1ee7a khung kim lo\u1ea1i kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i \u0111\u00e1ng tin c\u1eady, d\u00e2y v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i ch\u1eafc ch\u1eafn, c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng ch\u1ed1ng v\u00f2ng l\u1eb7p. C\u00e1c \u1ed1c v\u00edt v\u00e0 \u0111ai \u1ed1c kh\u00f4ng y\u00eau c\u1ea7u s\u1eed d\u1ee5ng c\u00e1c b\u1ed9 ph\u1eadn m\u1ea1 k\u1ebdm, v\u00e0 \u0111\u01b0\u1eddng k\u00ednh d\u00e2y kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u. Kh\u00f4ng c\u00f3 nh\u00e3n m\u00e0u ph\u00e2n bi\u1ec7t v\u00e0 kh\u00f4ng c\u00f3 t\u1ee7 \u0111\u1ef1ng th\u1ebb ho\u1eb7c s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n. C\u00e1ch b\u1ed1 tr\u00ed v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n kh\u00f4ng h\u1ee3p l\u00fd, v\u00e0 vi\u1ec7c s\u1eeda \u0111\u1ed5i l\u1ecbch tr\u00ecnh ch\u1eadm tr\u1ec5 c\u0169ng s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p<\/strong>Tr\u01b0\u1edbc h\u1ebft, trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt ph\u00f9 h\u1ee3p v\u1edbi thi\u1ebft k\u1ebf v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n, quy chu\u1ea9n. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t ph\u1ea3i s\u1ea3n xu\u1ea5t m\u1eabu, ki\u1ec3m tra v\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t sau khi \u0111\u1ea1t y\u00eau c\u1ea7u. S\u1ea3n ph\u1ea9m khi \u0111\u01b0a v\u00e0o s\u1eed d\u1ee5ng ph\u1ea3i tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t c\u00e1c y\u00eau c\u1ea7u v\u1ec1 thi\u1ebft k\u1ebf, ti\u00eau chu\u1ea9n v\u00e0 quy chu\u1ea9n trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra v\u00e0 nghi\u1ec7m thu, \u0111\u1ec3 x\u00e1c nh\u1eadn r\u1eb1ng vi\u1ec7c l\u1eafp \u0111\u1eb7t \u0111\u00e3 \u0111\u1ea1t y\u00eau c\u1ea7u.<\/p>\n\n\n\n

III.<\/strong> Vi\u1ec7c l\u1eafp \u0111\u1eb7t kh\u00f4ng ch\u1eafc ch\u1eafn, \u0111\u1ed9 cao kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u.<\/strong><\/strong><\/h3>\n\n\n\n

H\u1eadu qu\u1ea3<\/strong>: Chi\u1ec1u cao l\u1eafp \u0111\u1eb7t c\u1ee7a h\u1ed9p ph\u00e2n ph\u1ed1i \u0111\u00e8n ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n) kh\u00f4ng tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh, vi\u1ec7c l\u1eafp \u0111\u1eb7t kh\u00f4ng ch\u1eafc ch\u1eafn v\u00e0 h\u1ed9p kh\u00f4ng th\u1eb3ng \u0111\u1ee9ng. Khi l\u1eafp \u0111\u1eb7t trong \u0111i\u1ec1u ki\u1ec7n thi\u1ebfu s\u00e1ng, c\u00e1c c\u1ea1nh xung quanh b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng s\u00e1t t\u01b0\u1eddng, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng v\u00e0 t\u1ea7m nh\u00ecn kh\u00f4ng t\u1ed1t.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p<\/strong>: Chi\u1ec1u cao ph\u1ea3i \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u thi\u1ebft k\u1ebf. Khi thi\u1ebft k\u1ebf kh\u00f4ng quy \u0111\u1ecbnh, chi\u1ec1u cao c\u1ee7a m\u00e9p d\u01b0\u1edbi h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 chi\u1ebfu s\u00e1ng so v\u1edbi m\u1eb7t \u0111\u1ea5t ph\u1ea3i l\u00e0 1,5 m, v\u00e0 chi\u1ec1u cao c\u1ee7a m\u00e9p d\u01b0\u1edbi b\u1ea3ng ph\u00e2n ph\u1ed1i chi\u1ebfu s\u00e1ng so v\u1edbi m\u1eb7t \u0111\u1ea5t ph\u1ea3i l\u00e0 1,8 m. H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 chi\u1ebfu s\u00e1ng (b\u1ea3ng) ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t ch\u1eafc ch\u1eafn, \u0111\u1ed9 l\u1ec7ch cho ph\u00e9p c\u1ee7a \u0111\u1ed9 th\u1eb3ng \u0111\u1ee9ng l\u1eafp \u0111\u1eb7t kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 3 mm, v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f3 khe h\u1edf xung quanh h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 khi l\u1eafp \u0111\u1eb7t trong \u0111i\u1ec1u ki\u1ec7n t\u1ed1i, c\u00e1c c\u1ea1nh c\u1ee7a b\u1ea3ng xung quanh b\u1ea3ng ph\u1ea3i s\u00e1t t\u01b0\u1eddng, v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn ti\u1ebfp x\u00fac gi\u1eefa th\u00e2n h\u1ed9p v\u00e0 c\u00e1c c\u00f4ng tr\u00ecnh, k\u1ebft c\u1ea5u ph\u1ea3i \u0111\u01b0\u1ee3c s\u01a1n ph\u1ee7 s\u01a1n ch\u1ed1ng \u0103n m\u00f2n. Ph\u1ea3i s\u01a1n l\u1edbp s\u01a1n ch\u1ed1ng \u0103n m\u00f2n.<\/p>\n\n\n\n

IV.<\/strong> D\u00f2ng h\u1ed9p b\u1ecb c\u1eaft ngang m\u1ed9t c\u00e1ch l\u1ed9n x\u1ed9n, kh\u00f4ng \u0111\u01b0\u1ee3c g\u00f3i g\u1ecdn th\u00e0nh m\u1ed9t g\u00f3i.<\/strong><\/strong><\/h3>\n\n\n\n

H\u1eadu qu\u1ea3<\/strong>: H\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n trong h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) b\u1ecb l\u1ed9n x\u1ed9n, v\u00e0 b\u1ea3ng th\u1ee9 hai trong h\u1ed9p \u00e9p v\u00e0o l\u1ed7 \u1ed1ng, g\u00e2y c\u1ea3n tr\u1edf vi\u1ec7c \u0111\u01b0a d\u00e2y v\u00e0o h\u1ed9p. N\u1ebfu bu\u1ed9c ph\u1ea3i nh\u00e9t v\u00e0o, l\u1edbp c\u00e1ch \u0111i\u1ec7n c\u1ee7a d\u00e2y s\u1ebd b\u1ecb h\u01b0 h\u1ecfng theo th\u1eddi gian, d\u1ec5 d\u1eabn \u0111\u1ebfn ch\u1eadp \u0111i\u1ec7n. \u0110i\u1ec1u n\u00e0y c\u0169ng g\u00e2y b\u1ea5t ti\u1ec7n cho vi\u1ec7c b\u1ea3o tr\u00ec v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn th\u1ea9m m\u1ef9.<\/p>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p<\/strong>: H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 s\u1eed d\u1ee5ng h\u1ed9p kim lo\u1ea1i c\u1ea7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd ch\u1ed1ng g\u1ec9 v\u00e0 \u0103n m\u00f2n; c\u00e1c l\u1ed7 tho\u00e1t c\u1ee7a h\u1ed9p kh\u00f4ng \u0111\u01b0\u1ee3c h\u00e0n m\u1edf, l\u1ed7 \u1ed1ng ph\u1ea3i \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 tr\u01b0\u1edbc khi khoan l\u1ed7 tr\u00ean h\u1ed9p kim lo\u1ea1i; c\u00e1c d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp g\u1ecdn g\u00e0ng, v\u1ecb tr\u00ed \u1ed1ng d\u1eabn trong h\u1ed9p \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed h\u1ee3p l\u00fd. Kh\u00f4ng \u0111\u1ec3 t\u1ea5m s\u00e0n t\u1ea7ng hai \u00e9p \u1ed1ng qu\u00e1 ch\u1eb7t. C\u00e1c d\u00e2y trong h\u1ed9p n\u00ean \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed th\u1eb3ng h\u00e0ng quanh h\u1ed9p v\u00e0 g\u00f3i g\u1ecdn th\u00e0nh t\u1eebng b\u00f3.<\/p>\n\n\n\n

V. Kh\u00f4ng c\u00f3 thanh d\u1eabn \u0111i\u1ec7n N, PE trong h\u1ed9p \u0111i\u1ec7n.<\/strong><\/strong><\/h3>\n\n\n\n

H\u1eadu qu\u1ea3<\/strong>C\u00e1c thanh d\u1eabn \u0111i\u1ec7n N v\u00e0 PE kh\u00f4ng \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 cho h\u1ec7 th\u1ed1ng chi\u1ebfu s\u00e1ng (b\u1ea3ng ph\u00e2n ph\u1ed1i), \u0111i\u1ec1u n\u00e0y kh\u00f4ng \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng an to\u00e0n c\u1ee7a \u0111\u01b0\u1eddng d\u00e2y.<\/p>\n\n\n\n

\"\"<\/a><\/figure><\/div>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p<\/strong>H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t tr\u00ean \u0111\u01b0\u1eddng d\u00e2y trung t\u00ednh (N) v\u00e0 \u0111\u01b0\u1eddng d\u00e2y ti\u1ebfp \u0111\u1ea5t b\u1ea3o v\u1ec7 (PE). \u0110\u01b0\u1eddng d\u00e2y trung t\u00ednh v\u00e0 \u0111\u01b0\u1eddng d\u00e2y ti\u1ebfp \u0111\u1ea5t b\u1ea3o v\u1ec7 ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi b\u1ea3ng, kh\u00f4ng \u0111\u01b0\u1ee3c h\u00e0n n\u1ed1i, v\u00e0 ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh s\u1ed1.<\/p>\n\n\n\n

VI. C\u00e1c c\u1ea7u ch\u00ec v\u00edt \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t sai c\u00e1ch<\/strong><\/strong><\/h3>\n\n\n\n

H\u1eadu qu\u1ea3<\/strong>: \u1ed0c v\u00edt b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong h\u1ed9p ph\u00e2n ph\u1ed1i \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u0111\u00fang c\u00e1ch, v\u00e0 d\u00e2y ngu\u1ed3n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi \u0111\u1ea7u n\u1ed1i ren, \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c thay th\u1ebf l\u00f5i b\u1ea3o v\u1ec7. Vi\u1ec7c v\u1eadn h\u00e0nh kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng d\u1eabn \u0111\u1ebfn tai n\u1ea1n \u0111i\u1ec7n gi\u1eadt.<\/p>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p<\/strong>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n, d\u00e2y ngu\u1ed3n c\u1ee7a c\u1ea7u ch\u00ec v\u00edt \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi c\u1ef1c trung t\u00e2m, v\u00e0 d\u00e2y t\u1ea3i ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi c\u1ef1c c\u00f3 ren.<\/p>\n\n\n\n

VII.<\/strong> D\u00f2ng b\u1ea3o v\u1ec7 ch\u01b0a \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0110\u01b0\u1eddng k\u00ednh d\u00e2y kh\u00f4ng \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u<\/strong><\/strong><\/h3>\n\n\n\n

H\u1eadu qu\u1ea3<\/strong>: H\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed d\u00e2y b\u1ea3o v\u1ec7 t\u1eeb \u0111\u1ea7u cu\u1ed1i, m\u00e0 \u0111\u01b0\u1ee3c n\u1ed1i ti\u1ebfp qua khung h\u1ed9p, \u0111\u01b0\u1eddng k\u00ednh d\u00e2y kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp theo y\u00eau c\u1ea7u, c\u1eeda h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 kh\u00f4ng c\u00f3 d\u00e2y ti\u1ebfp \u0111\u1ea5t b\u1ea3o v\u1ec7, d\u1ec5 d\u1eabn \u0111\u1ebfn c\u00e1c s\u1ef1 c\u1ed1 an to\u00e0n.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p<\/strong>Theo y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt, h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) ph\u1ea3i \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ea5t b\u1ea3o v\u1ec7, h\u1ec7 th\u1ed1ng ti\u1ebfp \u0111\u1ea5t ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi \u0111\u1ea5t b\u1ea3o v\u1ec7; di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang c\u1ee7a d\u00e2y ti\u1ebfp \u0111\u1ea5t b\u1ea3o v\u1ec7 kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ecf h\u01a1n di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang t\u1eeb ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ebfn d\u00e2y d\u1eabn l\u1edbn nh\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n; tuy nhi\u00ean, vi\u1ec7c l\u1ef1a ch\u1ecdn c\u0169ng ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c quy \u0111\u1ecbnh li\u00ean quan; h\u1ed9p ph\u00e2n ph\u1ed1i ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfp \u0111\u1ea5t ch\u1eafc ch\u1eafn v\u00e0 \u0111\u00fang c\u00e1ch., Ph\u1ea3i c\u00f3 thi\u1ebft b\u1ecb kh\u00f3a.<\/strong>; \u0110\u1ed1i v\u1edbi \u0111i\u1ec7n \u00e1p 50V tr\u1edf l\u00ean ho\u1eb7c khi m\u1edf c\u1eeda thi\u1ebft b\u1ecb \u0111i\u1ec7n, c\u00e1c t\u1ea5m panel di \u0111\u1ed9ng ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi khung kim lo\u1ea1i c\u00f3 ti\u1ebfp \u0111\u1ea5t b\u1eb1ng d\u00e2y \u0111\u1ed3ng m\u1ec1m kh\u00f4ng b\u1ecdc c\u00e1ch \u0111i\u1ec7n c\u00f3 k\u1ebft n\u1ed1i \u0111\u00e1ng tin c\u1eady; di\u1ec7n t\u00edch m\u1eb7t c\u1eaft ngang c\u1ee7a d\u00e2y \u0111\u1ed3ng kh\u00f4ng b\u1ecdc c\u00e1ch \u0111i\u1ec7n c\u0169ng ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo quy \u0111\u1ecbnh; h\u1ed9p kim lo\u1ea1i v\u00e0 h\u1ed9p c\u00f3 \u0111\u1ed9 d\u00e0y th\u00e0nh d\u01b0\u1edbi 2,5 mm kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m \u0111\u01b0\u1eddng ti\u1ebfp \u0111\u1ea5t ch\u00e9o cho \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 \u0111\u01b0\u1eddng ti\u1ebfp \u0111\u1ea5t b\u1ea3o v\u1ec7 c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1ea1i \u0111i\u1ec3m ti\u1ebfp x\u00fac \u00e1p l\u1ef1c.<\/p>\n\n\n\n

VIII. T\u00ean m\u1ea1ch kh\u00f4ng \u0111\u01b0\u1ee3c ghi tr\u00ean phanh<\/strong><\/strong><\/h3>\n\n\n\n

H\u1eadu qu\u1ea3<\/strong>: B\u1ed9 ng\u1eaft m\u1ea1ch trong h\u1ed9p ph\u00e2n ph\u1ed1i \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) kh\u00f4ng \u0111\u01b0\u1ee3c d\u00e1n nh\u00e3n t\u00ean m\u1ea1ch, g\u00e2y b\u1ea5t ti\u1ec7n cho vi\u1ec7c s\u1eed d\u1ee5ng v\u00e0 b\u1ea3o tr\u00ec.<\/p>\n\n\n\n

C\u00e1c bi\u1ec7n ph\u00e1p<\/strong>Th\u00f4ng th\u01b0\u1eddng, theo y\u00eau c\u1ea7u c\u1ee7a c\u00e1c ti\u00eau chu\u1ea9n v\u00e0 quy \u0111\u1ecbnh, c\u1eeda c\u1ee7a h\u1ed9p ph\u00e2n ph\u1ed1i \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) Ph\u1ea3i \u0111\u01b0\u1ee3c g\u1eafn k\u00e8m v\u1edbi s\u01a1 \u0111\u1ed3 h\u1ec7 th\u1ed1ng m\u1ea1ch \u0111i\u1ec7n.<\/strong>, V\u00e0 t\u00ean c\u1ee7a m\u1ea1ch \u0111i\u1ec7n ph\u1ea3i \u0111\u01b0\u1ee3c ghi r\u00f5 tr\u00ean b\u1ed9 phanh, \u0111\u1eb7c bi\u1ec7t khi trong h\u1ed9p ph\u00e2n ph\u1ed1i \u0111i\u1ec7n ch\u1ed1ng ch\u00e1y n\u1ed5 (b\u1ea3ng) c\u00f3 ngu\u1ed3n \u0111i\u1ec7n AC, DC ho\u1eb7c c\u00e1c m\u1ee9c \u0111i\u1ec7n \u00e1p kh\u00e1c nhau, th\u00ec ph\u1ea3i ghi r\u00f5 r\u00e0ng.<\/p>","protected":false},"excerpt":{"rendered":"

Preamble With the continuous development of industry, the chance of using explosion-proof distribution boxes is also rising. Explosion-proof distribution boxes are mainly used in coal mines, fire stations, petroleum, petrochemical installations and textile and other flammable and explosive places. These places are more prone to protection accidents. So in the choice of power distribution box […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2075","post","type-post","status-publish","format-standard","hentry","category-explosion-proof-equipment"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Joe","author_link":"https:\/\/led.amasly.com\/vi\/author\/jacklin\/"},"uagb_comment_info":0,"uagb_excerpt":"Preamble With the continuous development of industry, the chance of using explosion-proof distribution boxes is also rising. Explosion-proof distribution boxes are mainly used in coal mines, fire stations, petroleum, petrochemical installations and textile and other flammable and explosive places. These places are more prone to protection accidents. So in the choice of power distribution box…","_links":{"self":[{"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/posts\/2075","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/comments?post=2075"}],"version-history":[{"count":2,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/posts\/2075\/revisions"}],"predecessor-version":[{"id":2346,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/posts\/2075\/revisions\/2346"}],"wp:attachment":[{"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/media?parent=2075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/categories?post=2075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/led.amasly.com\/vi\/wp-json\/wp\/v2\/tags?post=2075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}