{"id":10607,"date":"2025-01-11T09:29:27","date_gmt":"2025-01-11T09:29:27","guid":{"rendered":"https:\/\/www.hndfcrane.com\/?post_type=posts&#038;p=10607"},"modified":"2025-01-23T03:26:48","modified_gmt":"2025-01-23T03:26:48","slug":"overhead-crane-electrical-system-failures-and-repair","status":"publish","type":"posts","link":"https:\/\/www.hndfcrane.com\/vi\/posts\/overhead-crane-electrical-system-failures-and-repair\/","title":{"rendered":"H\u1ecfng h\u00f3c v\u00e0 s\u1eeda ch\u1eefa h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c tr\u00ean cao: Thi\u1ebft b\u1ecb \u0111i\u1ec7n, \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n v\u00e0 m\u1ea1ch \u0111i\u1ec7n"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>M\u1ee5c l\u1ee5c<\/p><nav><ul><li><a href=\"#overhead-crane-electrical-equipment-failures-and-repair\">H\u1ecfng h\u00f3c thi\u1ebft b\u1ecb \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c c\u1ea7u tr\u1ee5c v\u00e0 s\u1eeda ch\u1eefa<\/a><ul><li><a href=\"#1-ac-motor-failures-and-repair\">1. H\u1ecfng h\u00f3c \u0111\u1ed9ng c\u01a1 AC v\u00e0 s\u1eeda ch\u1eefa<\/a><\/li><li><a href=\"#2-ac-electric-magnet-failures-and-repair\">2. S\u1ef1 c\u1ed1 v\u00e0 s\u1eeda ch\u1eefa nam ch\u00e2m \u0111i\u1ec7n AC<\/a><\/li><li><a href=\"#3-ac-contactor-and-relay-failures-and-repair\">3. S\u1ef1 c\u1ed1 v\u00e0 s\u1eeda ch\u1eefa c\u1ee7a Contactor v\u00e0 Relay AC<\/a><\/li><\/ul><\/li><li><a href=\"#overhead-crane-electrical-control-and-circuit-failures-and-repair\">\u0110i\u1ec1u khi\u1ec3n \u0111i\u1ec7n v\u00e0 l\u1ed7i m\u1ea1ch \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c tr\u00ean cao v\u00e0 s\u1eeda ch\u1eefa<\/a><\/li><li><a href=\"#pdf-download\">T\u1ea3i xu\u1ed1ng b\u1ea3n PDF<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p>C\u1ea7n tr\u1ee5c c\u1ea7u tr\u1ee5c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p, v\u00e0 c\u00e1c s\u1ef1 c\u1ed1 v\u00e0 s\u1eeda ch\u1eefa h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c c\u1ea7u tr\u1ee5c c\u00f3 t\u1ea7m quan tr\u1ecdng s\u1ed1ng c\u00f2n. Hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ef1 an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a ho\u1ea1t \u0111\u1ed9ng c\u1ea7n tr\u1ee5c. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd kh\u00e1m ph\u00e1 c\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra s\u1ef1 c\u1ed1 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c c\u1ea7u tr\u1ee5c v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p s\u1eeda ch\u1eefa. B\u1eb1ng c\u00e1ch hi\u1ec3u c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y, ng\u01b0\u1eddi v\u1eadn h\u00e0nh c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba v\u00e0 gi\u1ea3i quy\u1ebft t\u1ed1t h\u01a1n c\u00e1c v\u1ea5n \u0111\u1ec1 ti\u1ec1m \u1ea9n, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng thi\u1ebft b\u1ecb \u1ed5n \u0111\u1ecbnh v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t di\u1ec5n ra su\u00f4n s\u1ebb.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2026\" height=\"1350\" src=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2025\/01\/overhead-crane-electrical-system-failures-and-repair.jpg\" alt=\"\" class=\"wp-image-10612\" srcset=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2025\/01\/overhead-crane-electrical-system-failures-and-repair.jpg 2026w, https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2025\/01\/overhead-crane-electrical-system-failures-and-repair-1536x1023.jpg 1536w\" sizes=\"(max-width: 2026px) 100vw, 2026px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"overhead-crane-electrical-equipment-failures-and-repair\">H\u1ecfng h\u00f3c thi\u1ebft b\u1ecb \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c c\u1ea7u tr\u1ee5c v\u00e0 s\u1eeda ch\u1eefa<\/h2>\n\n\n\n<p>Ph\u1ea7n n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c l\u1ed7i v\u00e0 c\u00e1ch s\u1eeda ch\u1eefa \u0111\u1ed9ng c\u01a1 AC, nam ch\u00e2m \u0111i\u1ec7n AC, ti\u1ebfp \u0111i\u1ec3m AC v\u00e0 r\u01a1le.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-ac-motor-failures-and-repair\">1. H\u1ecfng h\u00f3c \u0111\u1ed9ng c\u01a1 AC v\u00e0 s\u1eeda ch\u1eefa<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Th\u1ea5t b\u1ea1i<\/th><th>Nguy\u00ean nh\u00e2n<\/th><th>S\u1eeda<\/th><\/tr><\/thead><tbody><tr><td rowspan=\"4\">L\u00e0m n\u00f3ng \u0111\u1ec1u to\u00e0n b\u1ed9 \u0111\u1ed9ng c\u01a1<\/td><td>JC% qu\u00e1 l\u1edbn, g\u00e2y ra t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i<\/td><td>Gi\u1ea3m t\u1ea3i l\u00e0m vi\u1ec7c ho\u1eb7c thay \u0111\u1ed5i \u0111\u1ed9ng c\u01a1 JC% cao<\/td><\/tr><tr><td>L\u00e0m vi\u1ec7c \u1edf \u0111i\u1ec7n \u00e1p th\u1ea5p<\/td><td>Ng\u1eebng ho\u1ea1t \u0111\u1ed9ng khi \u0111i\u1ec7n \u00e1p l\u00e0m vi\u1ec7c th\u1ea5p h\u01a1n \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c 10%<\/td><\/tr><tr><td>L\u1ef1a ch\u1ecdn \u0111\u1ed9ng c\u01a1 kh\u00f4ng \u0111\u00fang<\/td><td>Ch\u1ecdn \u0111\u00fang \u0111\u1ed9ng c\u01a1<\/td><\/tr><tr><td>C\u00e1c th\u00f4ng s\u1ed1 c\u1ee7a c\u1ea7n c\u1ea9u \u0111\u00e3 thay \u0111\u1ed5i sau khi ki\u1ec3m tra<\/td><td>Ki\u1ec3m tra v\u00e0 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/td><\/tr><tr><td>Qu\u00e1 nhi\u1ec7t c\u1ee5c b\u1ed9 c\u1ee7a stato<\/td><td>T\u1ea5m th\u00e9p silic b\u1ecb ng\u1eafn m\u1ea1ch<\/td><td>S\u1eed d\u1ee5ng s\u01a1n c\u00e1ch \u0111i\u1ec7n v\u00e0o nh\u1eefng n\u01a1i x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng ch\u1eadp m\u1ea1ch<\/td><\/tr><tr><td rowspan=\"2\">Qu\u00e1 nhi\u1ec7t c\u1ee5c b\u1ed9 c\u1ee7a cu\u1ed9n d\u00e2y stato<\/td><td>L\u1ed7i h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n<\/td><td>Ki\u1ec3m tra v\u00e0 lo\u1ea1i b\u1ecf d\u00e2y \u0111i\u1ec7n sai<\/td><\/tr><tr><td>2 \u0111i\u1ec3m tr\u00ean cu\u1ed9n d\u00e2y c\u00f3 m\u1ea1ch ng\u1eafn v\u1edbi v\u1ecf<\/td><td>S\u1eeda ch\u1eefa cu\u1ed9n d\u00e2y pha<\/td><\/tr><tr><td rowspan=\"4\">Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a rotor t\u0103ng, d\u00f2ng \u0111i\u1ec7n l\u1edbn t\u00e1c \u0111\u1ed9ng v\u00e0o stato, \u0111\u1ed9ng c\u01a1 kh\u00f4ng th\u1ec3 \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 t\u1ed1i \u0111a \u1edf d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c.<\/td><td>C\u00e1c \u0111\u1ea7u cu\u1ed1i cu\u1ed9n d\u00e2y, \u0111i\u1ec3m trung t\u00ednh v\u00e0 cu\u1ed9n d\u00e2y song song ti\u1ebfp x\u00fac k\u00e9m<\/td><td>Ki\u1ec3m tra m\u1ed1i h\u00e0n v\u00e0 lo\u1ea1i b\u1ecf khuy\u1ebft t\u1eadt<\/td><\/tr><tr><td>Nh\u00f3m cu\u1ed9n d\u00e2y v\u00e0 v\u00f2ng tr\u01b0\u1ee3t c\u00f3 k\u1ebft n\u1ed1i l\u1ecfng l\u1ebbo<\/td><td>Ki\u1ec3m tra t\u00ecnh tr\u1ea1ng k\u1ebft n\u1ed1i<\/td><\/tr><tr><td>Ch\u1ed5i Dynamo c\u00f3 k\u1ebft n\u1ed1i l\u1ecfng l\u1ebbo<\/td><td>Ki\u1ec3m tra v\u00e0 \u0111i\u1ec1u ch\u1ec9nh ch\u1ed5i than<\/td><\/tr><tr><td>Ti\u1ebfp x\u00fac k\u00e9m trong m\u1ea1ch quay<\/td><td>Ki\u1ec3m tra xem c\u00f3 l\u1ecfng l\u1ebbo v\u00e0 t\u00ecnh tr\u1ea1ng ti\u1ebfp x\u00fac k\u00e9m kh\u00f4ng v\u00e0 s\u1eeda ch\u1eefa. Ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf v\u00e0 thay th\u1ebf c\u00e1i b\u1ecb h\u1ecfng.<\/td><\/tr><tr><td rowspan=\"3\">Rung \u0111\u1ed9ng c\u01a1 khi l\u00e0m vi\u1ec7c<\/td><td>Tr\u1ee5c \u0111\u1ed9ng c\u01a1 v\u00e0 b\u1ed9 gi\u1ea3m t\u1ed1c kh\u00f4ng n\u1eb1m tr\u00ean c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng<\/td><td>C\u00e0i \u0111\u1eb7t l\u1ea1i<\/td><\/tr><tr><td>H\u01b0 h\u1ecfng v\u00e0 hao m\u00f2n \u1ed5 tr\u1ee5c<\/td><td>Thay th\u1ebf v\u00f2ng bi<\/td><\/tr><tr><td>Bi\u1ebfn d\u1ea1ng c\u1ee7a rotor<\/td><td>Ki\u1ec3m tra<\/td><\/tr><tr><td rowspan=\"4\">Ti\u1ebfng \u1ed3n b\u1ea5t th\u01b0\u1eddng khi l\u00e0m vi\u1ec7c<\/td><td>M\u1ed9t pha l\u1ed7i stato<\/td><td>Ki\u1ec3m tra h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n v\u00e0 s\u1eeda \u0111\u1ed5i<\/td><\/tr><tr><td>Trong l\u00f5i s\u1eaft c\u1ee7a stato kh\u00f4ng b\u1ecb \u00e9p<\/td><td>Ki\u1ec3m tra stato v\u00e0 s\u1eeda ch\u1eefa<\/td><\/tr><tr><td>V\u00f2ng bi m\u00f2n<\/td><td>Thay th\u1ebf v\u00f2ng bi<\/td><\/tr><tr><td>N\u00eam m\u1edf r\u1ed9ng<\/td><td>C\u1eaft ph\u1ea7n m\u1edf r\u1ed9ng ho\u1eb7c thay th\u1ebf n\u00eam<\/td><\/tr><tr><td>Sau khi \u0111\u1ed9ng c\u01a1 \u0111\u01b0\u1ee3c t\u1ea3i, t\u1ed1c \u0111\u1ed9 quay c\u1ee7a n\u00f3 ch\u1eadm l\u1ea1i<\/td><td>\u0110\u1ea7u cu\u1ed1i c\u1ee7a m\u1ea1ch ng\u1eafn r\u00f4to ho\u1eb7c 2 v\u1ecb tr\u00ed n\u1ed1i \u0111\u1ea5t c\u1ee7a cu\u1ed9n d\u00e2y r\u00f4to<\/td><td>Lo\u1ea1i b\u1ecf c\u00e1c m\u1ea1ch ng\u1eafn v\u00e0 ki\u1ec3m tra t\u1eebng v\u00f2ng l\u1eb7p, s\u1eeda ch\u1eefa c\u00e1c m\u1ea1ch b\u1ecb h\u1ecfng v\u00e0 lo\u1ea1i b\u1ecf c\u00e1c m\u1ea1ch ng\u1eafn<\/td><\/tr><tr><td rowspan=\"2\">Ma s\u00e1t gi\u1eefa stato v\u00e0 roto khi \u0111\u1ed9ng c\u01a1 ho\u1ea1t \u0111\u1ed9ng<\/td><td>\u0110\u1ea7u k\u1ebft n\u1ed1i \u1ed5 tr\u1ee5c b\u1ecb ng\u1eafn m\u1ea1ch<\/td><td>Thay th\u1ebf \u1ed5 tr\u1ee5c b\u1ecb h\u1ecfng v\u00e0 ki\u1ec3m tra v\u1ecb tr\u00ed n\u1eafp, lo\u1ea1i b\u1ecf gi\u1ebb r\u00e1ch tr\u00ean stato v\u00e0 r\u00f4to<\/td><\/tr><tr><td>K\u1ebft n\u1ed1i v\u00f2ng l\u1eb7p kh\u00f4ng \u0111\u00fang, t\u1eeb th\u00f4ng kh\u00f4ng c\u00e2n b\u1eb1ng<\/td><td>K\u1ebft n\u1ed1i \u0111\u00fang v\u00e0 ki\u1ec3m tra xem m\u1ed7i pha c\u00f3 b\u1eb1ng nhau trong stato kh\u00f4ng<\/td><\/tr><tr><td rowspan=\"7\">Tia l\u1eeda tr\u00ean ch\u1ed5i than ho\u1eb7c v\u00f2ng tr\u01b0\u1ee3t b\u1ecb ch\u00e1y<\/td><td>B\u00e0n ch\u1ea3i m\u00e0i k\u00e9m<\/td><td>B\u00e0n ch\u1ea3i m\u00e0i<\/td><\/tr><tr><td>B\u00e0n ch\u1ea3i qu\u00e1 l\u1ecfng khi l\u00e0m vi\u1ec7c<\/td><td>\u0110i\u1ec1u ch\u1ec9nh ch\u1ed5i ho\u1eb7c m\u00e0i \u0111\u00fang c\u00e1ch<\/td><\/tr><tr><td>B\u00e0n ch\u1ea3i ho\u1eb7c v\u00f2ng l\u1eb7p b\u1ea9n<\/td><td>L\u00e0m s\u1ea1ch b\u1eb1ng c\u1ed3n<\/td><\/tr><tr><td>V\u00f2ng l\u1eb7p kh\u00f4ng ph\u1eb3ng, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ch\u1ed5i nh\u1ea3y<\/td><td>V\u00f2ng gia c\u00f4ng v\u00e0 m\u00e0i<\/td><\/tr><tr><td>\u00c1p l\u1ef1c b\u00e0n ch\u1ea3i th\u1ea5p<\/td><td>\u0110i\u1ec1u ch\u1ec9nh \u00e1p l\u1ef1c ch\u1ed5i (18-20KPa)<\/td><\/tr><tr><td>C\u1ea5p \u0111\u1ed9 c\u1ecd kh\u00f4ng \u0111\u00fang<\/td><td>Thay th\u1ebf<\/td><\/tr><tr><td>S\u1ef1 ph\u00e2n b\u1ed1 hi\u1ec7n t\u1ea1i c\u1ee7a b\u00e0n ch\u1ea3i kh\u00f4ng \u0111\u1ec1u<\/td><td>Ki\u1ec3m tra ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n cho d\u00e2y v\u00e0 ch\u1ed5i than, v\u00e0 \u0111i\u1ec1u ch\u1ec9nh<\/td><\/tr><tr><td>M\u1ea1ch h\u1edf v\u00f2ng tr\u01b0\u1ee3t<\/td><td>V\u00f2ng l\u1eb7p v\u00e0 b\u00e0n ch\u1ea3i b\u1ea9n<\/td><td>L\u00e0m s\u1ea1ch b\u1ee5i b\u1ea9n<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">H\u1ecfng h\u00f3c \u0111\u1ed9ng c\u01a1 AC v\u00e0 s\u1eeda ch\u1eefa<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-ac-electric-magnet-failures-and-repair\">2. S\u1ef1 c\u1ed1 v\u00e0 s\u1eeda ch\u1eefa nam ch\u00e2m \u0111i\u1ec7n AC<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Th\u1ea5t b\u1ea1i<\/th><th>Nguy\u00ean nh\u00e2n<\/th><th>S\u1eeda<\/th><\/tr><\/thead><tbody><tr><td rowspan=\"3\">Qu\u00e1 nhi\u1ec7t c\u1ee7a v\u00f2ng l\u1eb7p<\/td><td>Qu\u00e1 t\u1ea3i l\u1ef1c s\u1eaft t\u1eeb<\/td><td>\u0110i\u1ec1u ch\u1ec9nh l\u1ef1c k\u00e9o c\u1ee7a l\u00f2 xo<\/td><\/tr><tr><td>Ph\u1ea7n c\u1ed1 \u0111\u1ecbnh v\u00e0 ph\u1ea7n t\u0129nh c\u1ee7a m\u1ea1ch k\u00edn c\u00f3 m\u1ed9t kho\u1ea3ng h\u1edf<\/td><td>Lo\u1ea1i b\u1ecf kho\u1ea3ng c\u00e1ch<\/td><\/tr><tr><td>\u0110i\u1ec7n \u00e1p v\u00f2ng l\u1eb7p v\u00e0 \u0111i\u1ec7n \u00e1p ngu\u1ed3n kh\u00f4ng kh\u1edbp nhau<\/td><td>Thay th\u1ebf v\u00f2ng l\u1eb7p ho\u1eb7c thay \u0111\u1ed5i ph\u01b0\u01a1ng th\u1ee9c k\u1ebft n\u1ed1i<\/td><\/tr><tr><td rowspan=\"3\">Qu\u00e1 \u1ed3n khi l\u00e0m vi\u1ec7c<\/td><td>Qu\u00e1 t\u1ea3i s\u1eaft t\u1eeb<\/td><td>\u0110i\u1ec1u ch\u1ec9nh l\u00f2 xo<\/td><\/tr><tr><td>B\u1ee5i b\u1ea9n tr\u00ean b\u1ec1 m\u1eb7t m\u1ea1ch t\u1eeb<\/td><td>L\u00e0m s\u1ea1ch b\u1ee5i b\u1ea9n<\/td><\/tr><tr><td>\u0110\u1ed9 l\u1ec7ch c\u1ee7a h\u1ec7 th\u1ed1ng t\u1eeb<\/td><td>\u0110i\u1ec1u ch\u1ec9nh b\u1ed9 ph\u1eadn c\u01a1 kh\u00ed c\u1ee7a phanh v\u00e0 lo\u1ea1i b\u1ecf \u0111\u1ed9 l\u1ec7ch<\/td><\/tr><tr><td rowspan=\"3\">Kh\u00f4ng th\u1ec3 th\u1eafng \u0111\u01b0\u1ee3c l\u1ef1c l\u00f2 xo<\/td><td>Qu\u00e1 t\u1ea3i s\u1eaft t\u1eeb<\/td><td>\u0110i\u1ec1u ch\u1ec9nh l\u00f2 xo ch\u00ednh c\u1ee7a phanh<\/td><\/tr><tr><td>L\u1ef1c l\u00f2 xo qu\u00e1 l\u1edbn<\/td><td>\u0110i\u1ec1u ch\u1ec9nh l\u00f2 xo ch\u00ednh c\u1ee7a phanh<\/td><\/tr><tr><td>\u0110i\u1ec7n \u00e1p th\u1ea5p<\/td><td>D\u1eebng l\u00e0m vi\u1ec7c<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">S\u1ef1 c\u1ed1 v\u00e0 s\u1eeda ch\u1eefa nam ch\u00e2m \u0111i\u1ec7n AC<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-ac-contactor-and-relay-failures-and-repair\">3. S\u1ef1 c\u1ed1 v\u00e0 s\u1eeda ch\u1eefa c\u1ee7a Contactor v\u00e0 Relay AC<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Th\u1ea5t b\u1ea1i<\/th><th>Nguy\u00ean nh\u00e2n<\/th><th>S\u1eeda<\/th><\/tr><\/thead><tbody><tr><td rowspan=\"2\">Qu\u00e1 nhi\u1ec7t c\u1ee7a v\u00f2ng l\u1eb7p<\/td><td>Qu\u00e1 t\u1ea3i v\u00f2ng l\u1eb7p<\/td><td>Gi\u1ea3m \u00e1p l\u1ef1c m\u00e0 \u0111\u1ea7u cu\u1ed1i di \u0111\u1ed9ng t\u00e1c \u0111\u1ed9ng l\u00ean \u0111\u1ea7u cu\u1ed1i c\u1ed1 \u0111\u1ecbnh<\/td><\/tr><tr><td>B\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a d\u00f2ng t\u1eeb kh\u00f4ng th\u1ec3 ti\u1ebfp x\u00fac v\u1edbi b\u1ed9 ph\u1eadn c\u1ed1 \u0111\u1ecbnh<\/td><td>Lo\u1ea1i b\u1ecf k\u1eb9t l\u1ec7ch, b\u1ee5i b\u1ea9n ho\u1eb7c v\u00f2ng l\u1eb7p thay \u0111\u1ed5i<\/td><\/tr><tr><td rowspan=\"2\">Ti\u1ebfp x\u00fac qu\u00e1 \u1ed3n<\/td><td>Qu\u00e1 t\u1ea3i v\u00f2ng l\u1eb7p, b\u1ee5i b\u1ea9n tr\u00ean b\u1ec1 m\u1eb7t d\u00f2ng t\u1eeb<\/td><td>Gi\u1ea3m \u00e1p su\u1ea5t ti\u1ebfp x\u00fac, s\u1ea1ch b\u1ea9n<\/td><\/tr><tr><td>H\u1ec7 th\u1ed1ng t\u1ef1 \u0111i\u1ec1u ch\u1ec9nh d\u00f2ng t\u1eeb g\u00e2y nhi\u1ec5u<\/td><td>Lo\u1ea1i b\u1ecf m\u1ee9t<\/td><\/tr><tr><td rowspan=\"2\">Ti\u1ebfp x\u00fac qu\u00e1 n\u00f3ng ho\u1eb7c b\u1ecb ch\u00e1y<\/td><td>Ti\u1ebfp x\u00fac thi\u1ebfu \u00e1p l\u1ef1c<\/td><td>\u0110i\u1ec1u ch\u1ec9nh \u00e1p su\u1ea5t<\/td><\/tr><tr><td>Ti\u1ebfp x\u00fac b\u1ecb b\u1ea9n<\/td><td>L\u00e0m s\u1ea1ch ho\u1eb7c thay th\u1ebf<\/td><\/tr><tr><td rowspan=\"5\">Li\u00ean h\u1ec7 ch\u00ednh kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i<\/td><td>C\u00f4ng t\u1eafc kh\u00f4ng \u0111\u00f3ng, c\u00f4ng t\u1eafc EM kh\u00f4ng \u0111\u00f3ng<\/td><td>\u0110\u00f3ng c\u00f4ng t\u1eafc<\/td><\/tr><tr><td>C\u00f4ng t\u1eafc c\u1eeda tr\u00ean kh\u00f4ng \u0111\u00f3ng<\/td><td>\u0110\u00f3ng c\u00f4ng t\u1eafc<\/td><\/tr><tr><td>C\u1ea7n \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng \u1edf v\u1ecb tr\u00ed 0<\/td><td>\u0110\u01b0a c\u1ea7n g\u1ea1t v\u1ec1 v\u1ecb tr\u00ed 0<\/td><\/tr><tr><td>C\u1ea7u ch\u00ec m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n b\u1ecb ch\u00e1y<\/td><td>Ki\u1ec3m tra ho\u1eb7c thay th\u1ebf c\u1ea7u ch\u00ec<\/td><\/tr><tr><td>Kh\u00f4ng c\u00f3 \u0111i\u1ec7n trong m\u1ea1ch<\/td><td>Ki\u1ec3m tra xem \u0111i\u1ec7n \u00e1p c\u00f3 b\u1eadt kh\u00f4ng<\/td><\/tr><tr><td rowspan=\"5\">B\u1ea3o v\u1ec7 t\u1eaft ngu\u1ed3n x\u1ea3y ra th\u01b0\u1eddng xuy\u00ean<\/td><td>\u00c1p l\u1ef1c ti\u1ebfp x\u00fac kh\u00f4ng \u0111\u1ee7<\/td><td>\u0110i\u1ec1u ch\u1ec9nh \u00e1p su\u1ea5t ti\u1ebfp x\u00fac<\/td><\/tr><tr><td>Ti\u1ebfp x\u00fac b\u1ecb \u0111\u1ed1t ch\u00e1y<\/td><td>Thay th\u1ebf ho\u1eb7c m\u00e0i ti\u1ebfp \u0111i\u1ec3m<\/td><\/tr><tr><td>Ti\u1ebfp x\u00fac kh\u00f4ng s\u1ea1ch<\/td><td>Lau d\u1ecdn<\/td><\/tr><tr><td>Qu\u00e1 t\u1ea3i l\u00e0m vi\u1ec7c, qu\u00e1 d\u00f2ng<\/td><td>Gi\u1ea3m t\u1ea3i hi\u1ec7n t\u1ea1i<\/td><\/tr><tr><td>D\u00e2y tr\u01b0\u1ee3t kh\u00f4ng song song, ti\u1ebfp x\u00fac gi\u1eefa b\u1ed9 thu d\u00f2ng \u0111i\u1ec7n v\u00e0 d\u00e2y tr\u01b0\u1ee3t l\u1ecfng l\u1ebbo<\/td><td>\u0110i\u1ec1u ch\u1ec9nh thanh ray ho\u1eb7c d\u00e2y<\/td><\/tr><tr><td rowspan=\"2\">Ti\u1ebfp x\u00fac qu\u00e1 ch\u1eadm<\/td><td>Kho\u1ea3ng c\u00e1ch b\u1ec1 m\u1eb7t c\u1ef1c nam ch\u00e2m qu\u00e1 l\u1edbn<\/td><td>R\u00fat ng\u1eafn kho\u1ea3ng c\u00e1ch b\u1ec1 m\u1eb7t c\u1ef1c<\/td><\/tr><tr><td>Ph\u1ea7n tr\u00ean c\u1ee7a t\u1ea5m \u0111\u1ebf nh\u00f4 ra nhi\u1ec1u h\u01a1n ph\u1ea7n d\u01b0\u1edbi<\/td><td>L\u1eafp \u0111\u1eb7t c\u00e1c b\u1ed9 ph\u1eadn theo chi\u1ec1u d\u1ecdc<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">S\u1ef1 c\u1ed1 v\u00e0 s\u1eeda ch\u1eefa c\u1ee7a Contactor v\u00e0 Relay AC<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"overhead-crane-electrical-control-and-circuit-failures-and-repair\">\u0110i\u1ec1u khi\u1ec3n \u0111i\u1ec7n v\u00e0 l\u1ed7i m\u1ea1ch \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c tr\u00ean cao v\u00e0 s\u1eeda ch\u1eefa<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Th\u1ea5t b\u1ea1i<\/th><th>Nguy\u00ean nh\u00e2n<\/th><th>S\u1eeda<\/th><\/tr><\/thead><tbody><tr><td>C\u1ea7u ch\u00ec trong m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n b\u1ecb ch\u00e1y sau khi c\u00f4ng t\u1eafc dao \u0111\u00f3ng<\/td><td>Pha n\u00e0y n\u1ed1i \u0111\u1ea5t trong m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n<\/td><td>Ki\u1ec3m tra ph\u1ea7n n\u1ed1i \u0111\u1ea5t b\u1eb1ng \u00f4m k\u1ebf v\u00e0 lo\u1ea1i b\u1ecf s\u1ef1 c\u1ed1<\/td><\/tr><tr><td rowspan=\"2\">Sau khi truy\u1ec1n c\u01a1 ch\u1ebf, r\u01a1le qu\u00e1 d\u00f2ng v\u1eabn ho\u1ea1t \u0111\u1ed9ng<\/td><td>Gi\u00e1 tr\u1ecb c\u00e0i \u0111\u1eb7t c\u1ee7a r\u01a1le qu\u00e1 d\u00f2ng kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u<\/td><td>\u0110i\u1ec1u ch\u1ec9nh r\u01a1le theo c\u00f4ng th\u1ee9c sau: I(\u0111\u1ecbnh m\u1ee9c)= ( 2,25~2,5 ) I(\u0111\u1ecbnh m\u1ee9c)<\/td><\/tr><tr><td>B\u1ed9 ph\u1eadn truy\u1ec1n \u0111\u1ed9ng c\u01a1 kh\u00ed b\u1ecb k\u1eb9t d\u1eabn \u0111\u1ebfn \u0111\u1ed9ng c\u01a1 qu\u00e1 t\u1ea3i<\/td><td>Ki\u1ec3m tra b\u1ed9 ph\u1eadn truy\u1ec1n \u0111\u1ed9ng v\u00e0 lo\u1ea1i b\u1ecf k\u1eb9t<\/td><\/tr><tr><td rowspan=\"6\">\u0110\u1ed9ng c\u01a1 kh\u00f4ng th\u1ec3 quay sau khi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00e3 \u0111\u00f3ng<\/td><td>Khi m\u1ea5t m\u1ed9t pha, \u0111\u1ed9ng c\u01a1 ph\u00e1t ra ti\u1ebfng \u1ed3n<\/td><td>T\u00ecm h\u01b0 h\u1ecfng v\u00e0 n\u1ed1i l\u1ea1i d\u00e2y \u0111i\u1ec7n<\/td><\/tr><tr><td>\u0110\u1ee9t d\u00e2y trong m\u1ea1ch quay<\/td><td>T\u00ecm h\u01b0 h\u1ecfng v\u00e0 n\u1ed1i l\u1ea1i d\u00e2y \u0111i\u1ec7n<\/td><\/tr><tr><td>V\u00f2ng l\u1eb7p kh\u00f4ng c\u00f3 \u0111i\u1ec7n \u00e1p<\/td><td>T\u00ecm h\u01b0 h\u1ecfng v\u00e0 n\u1ed1i l\u1ea1i d\u00e2y \u0111i\u1ec7n<\/td><\/tr><tr><td>C\u00e1c li\u00ean h\u1ec7 trong b\u1ed9 \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng th\u1ec3 li\u00ean l\u1ea1c<\/td><td>S\u1eeda ch\u1eefa b\u1ed9 \u0111i\u1ec1u khi\u1ec3n<\/td><\/tr><tr><td>L\u1ed7i \u0111\u1ed9t bi\u1ebfn c\u1ee7a b\u1ed9 thu d\u00f2ng \u0111i\u1ec7n<\/td><td>S\u1eeda ch\u1eefa ch\u1ed5i c\u1ee7a b\u1ed9 thu<\/td><\/tr><tr><td>Phanh b\u1ecb tr\u1ee5c tr\u1eb7c v\u00e0 kh\u00f4ng th\u1ec3 nh\u1ea3 ra<\/td><td>S\u1eeda ch\u1eefa phanh<\/td><\/tr><tr><td rowspan=\"4\">\u0110\u1ed9ng c\u01a1 ch\u1ec9 c\u00f3 th\u1ec3 quay theo m\u1ed9t h\u01b0\u1edbng sau khi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c \u0111\u00f3ng l\u1ea1i<\/td><td>Ti\u1ebfp \u0111i\u1ec3m ng\u01b0\u1ee3c b\u1ecb l\u1ecfng k\u1ebft n\u1ed1i ho\u1eb7c tr\u1ee5c tr\u1eb7c v\u1edbi c\u01a1 c\u1ea5u l\u00e1i<\/td><td>Ki\u1ec3m tra b\u1ed9 \u0111i\u1ec1u khi\u1ec3n v\u00e0 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ea7u ti\u1ebfp x\u00fac<\/td><\/tr><tr><td>\u0110\u01b0\u1eddng d\u00e2y ph\u00e2n ph\u1ed1i \u0111i\u1ec7n b\u1ecb h\u1ecfng<\/td><td>S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p \u0111o\u1ea3n m\u1ea1ch \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed v\u00e0 lo\u1ea1i b\u1ecf l\u1ed7i<\/td><\/tr><tr><td>C\u01a1 ch\u1ebf di chuy\u1ec3n \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u1ee7a n\u00f3 v\u00e0 k\u00edch ho\u1ea1t c\u00f4ng t\u1eafc gi\u1edbi h\u1ea1n<\/td><td>Khi n\u00f3 ch\u1ec9 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng theo m\u1ed9t h\u01b0\u1edbng, h\u00e3y kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 s\u1eeda l\u1ed7i<\/td><\/tr><tr><td>C\u00f4ng t\u1eafc gi\u1edbi h\u1ea1n \u0111\u00e3 b\u1ecb tr\u1ee5c tr\u1eb7c<\/td><td>Ki\u1ec3m tra c\u00f4ng t\u1eafc gi\u1edbi h\u1ea1n v\u00e0 lo\u1ea1i b\u1ecf l\u1ed7i<\/td><\/tr><tr><td rowspan=\"2\">Sau khi c\u00f4ng t\u1eafc gi\u1edbi h\u1ea1n \u0111\u1ea7u cu\u1ed1i \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t, ti\u1ebfp \u0111i\u1ec3m ch\u00ednh kh\u00f4ng nh\u1ea3<\/td><td>\u0110\u00e3 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch \u1edf m\u1ea1ch c\u00f4ng t\u1eafc cu\u1ed1i<\/td><td>Th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec v\u00e0 lo\u1ea1i b\u1ecf hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch<\/td><\/tr><tr><td>C\u00e1c d\u00e2y \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i kh\u00f4ng \u0111\u00fang v\u1edbi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n<\/td><td>S\u1eeda l\u1ed7i h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n<\/td><\/tr><tr><td rowspan=\"2\">B\u1ed9 \u0111i\u1ec1u khi\u1ec3n b\u1ecb k\u1eb9t v\u00e0 va \u0111\u1eadp trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng<\/td><td>C\u01a1 ch\u1ebf \u0111\u1ecbnh v\u1ecb \u0111\u00e3 b\u1ecb tr\u1ee5c tr\u1eb7c<\/td><td>Lo\u1ea1i b\u1ecf l\u1ed7i<\/td><\/tr><tr><td>Ti\u1ebfp x\u00fac k\u1eb9t trong bu\u1ed3ng cong<\/td><td>\u0110i\u1ec1u ch\u1ec9nh v\u1ecb tr\u00ed ti\u1ebfp x\u00fac<\/td><\/tr><tr><td rowspan=\"2\">B\u1ed9 \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng th\u1ec3 k\u00e9o trong khi ho\u1ea1t \u0111\u1ed9ng<\/td><td>C\u01a1 ch\u1ebf \u0111\u1ecbnh v\u1ecb b\u1ecb tr\u1ee5c tr\u1eb7c<\/td><td>\u0110i\u1ec1u ch\u1ec9nh \u00e1p su\u1ea5t<\/td><\/tr><tr><td>Ti\u1ebfp \u0111i\u1ec3m ch\u00e1y v\u00e0 li\u00ean k\u1ebft<\/td><td>L\u00e0m s\u1ea1ch contactor<\/td><\/tr><tr><td rowspan=\"2\">M\u00e1y ph\u00e1t \u0111i\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c k\u00edch th\u00edch<\/td><td>M\u1ea1ch k\u00edch th\u00edch b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i<\/td><td>Ki\u1ec3m tra m\u1ea1ch k\u00edch th\u00edch<\/td><\/tr><tr><td>Quay ng\u01b0\u1ee3c m\u00e1y ph\u00e1t \u0111i\u1ec7n<\/td><td>Thay th\u1ebf d\u00e2y \u0111i\u1ec7n 2 pha c\u1ee7a \u0111\u1ed9ng c\u01a1 d\u1eabn \u0111\u1ed9ng<\/td><\/tr><tr><td rowspan=\"2\">Sau khi ng\u1eaft ngu\u1ed3n (ng\u1eaft m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n), contactor c\u1ee7a h\u1ed9p b\u1ea3o v\u1ec7 s\u1ebd kh\u00f4ng ng\u1eaft<\/td><td>C\u00f3 n\u1ed1i \u0111\u1ea5t ho\u1eb7c ng\u1eafn m\u1ea1ch trong m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n<\/td><td>T\u00ecm nh\u1eefng n\u01a1i \u0111\u00f3 v\u00e0 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1<\/td><\/tr><tr><td>\u0110\u1ea7u n\u1ed1i ti\u1ebfp x\u00fac h\u00e0n\uff0ccung c\u1ea5p ngu\u1ed3n cho m\u1ea1ch ch\u00ednh<\/td><td>C\u1eaft \u0111\u1ea7u ti\u1ebfp x\u00fac b\u1ecb ch\u00e1y \u0111\u1ec3 n\u00f3 ho\u1ea1t \u0111\u1ed9ng tr\u1edf l\u1ea1i<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u0110i\u1ec1u khi\u1ec3n \u0111i\u1ec7n v\u00e0 l\u1ed7i m\u1ea1ch \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c tr\u00ean cao v\u00e0 s\u1eeda ch\u1eefa<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"pdf-download\">T\u1ea3i xu\u1ed1ng b\u1ea3n PDF<\/h2>\n\n\n\n<div class=\"wp-block-file postspdf\"><a id=\"wp-block-file--media-94257129-9c50-4890-8ae2-7f9d839371aa\" href=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2025\/01\/Overhead-Crane-Electrical-System-Failures-and-Repair.pdf\">H\u1ecfng h\u00f3c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c v\u00e0 s\u1eeda ch\u1eefa<\/a><a href=\"https:\/\/www.hndfcrane.com\/wp-content\/uploads\/2025\/01\/Overhead-Crane-Electrical-System-Failures-and-Repair.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-94257129-9c50-4890-8ae2-7f9d839371aa\">T\u1ea3i xu\u1ed1ng PDF<\/a><\/div>","protected":false},"excerpt":{"rendered":"C\u1ea7n tr\u1ee5c c\u1ea7u tr\u1ee5c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p, v\u00e0 vi\u1ec7c h\u1ecfng h\u00f3c c\u0169ng nh\u01b0 s\u1eeda ch\u1eefa h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c c\u1ea7u tr\u1ee5c c\u00f3 t\u1ea7m quan tr\u1ecdng \u0111\u1eb7c bi\u1ec7t. Hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ef1 an to\u00e0n v\u00e0 hi\u1ec7u qu\u1ea3 v\u1eadn h\u00e0nh c\u1ee7a c\u1ea7n tr\u1ee5c. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd t\u00ecm hi\u1ec3u nh\u1eefng nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra h\u1ecfng h\u00f3c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a c\u1ea7n tr\u1ee5c c\u1ea7u tr\u1ee5c v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p s\u1eeda ch\u1eefa. B\u1eb1ng c\u00e1ch [\u2026]","protected":false},"featured_media":10612,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[197],"posts_tag":[339,338,248],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/10607"}],"collection":[{"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":7,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/10607\/revisions"}],"predecessor-version":[{"id":10771,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/xmxposts\/10607\/revisions\/10771"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/media\/10612"}],"wp:attachment":[{"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/media?parent=10607"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/posts_category?post=10607"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.hndfcrane.com\/vi\/wp-json\/wp\/v2\/posts_tag?post=10607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}