{"id":17738,"date":"2026-04-03T14:16:44","date_gmt":"2026-04-03T07:16:44","guid":{"rendered":"https:\/\/lctech.vn\/?p=17738"},"modified":"2026-04-22T21:17:32","modified_gmt":"2026-04-22T14:17:32","slug":"khung-hoang-ngung-may-do-vfd-ke-huy-diet-tham-lang-trong-cac-nha-may-hien-dai","status":"publish","type":"post","link":"https:\/\/lctech.vn\/en\/khung-hoang-ngung-may-do-vfd-ke-huy-diet-tham-lang-trong-cac-nha-may-hien-dai\/","title":{"rendered":"KH\u1ee6NG HO\u1ea2NG NG\u1eeaNG M\u00c1Y DO VFD: &#8220;K\u1eba H\u1ee6Y DI\u1ec6T TH\u1ea6M L\u1eb6NG&#8221; TRONG C\u00c1C NH\u00c0 M\u00c1Y HI\u1ec6N \u0110\u1ea0I"},"content":{"rendered":"<p data-path-to-node=\"2\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\">M\u1ed7i gi\u1edd, m\u1ed9t d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ph\u1ea3i ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. C\u00e1c nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 b\u1ecb thi\u1ec7t h\u1ea1i t\u1eeb 1.000 \u0111\u1ebfn 10.000 USD. Th\u01b0\u1eddng th\u00ec th\u1ee7 ph\u1ea1m l\u1ea1i \u0111\u1ebfn t\u1eeb m\u1ed9t s\u1ef1 c\u1ed1 ng\u1eaft (trip) t\u01b0\u1edfng ch\u1eebng nh\u1ecf c\u1ee7a bi\u1ebfn t\u1ea7n (VFD &#8211; Variable Frequency Drive). M\u1eb7c d\u00f9 VFD l\u00e0 thi\u1ebft b\u1ecb thi\u1ebft y\u1ebfu gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng v\u00e0 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1, nh\u01b0ng khi ch\u00fang g\u1eb7p s\u1ef1 c\u1ed1, h\u1ec7 qu\u1ea3 \u0111\u1ec3 l\u1ea1i l\u00e0 nh\u1eefng r\u1eafc r\u1ed1i v\u1eadn h\u00e0nh kh\u1ed5ng l\u1ed3.<\/span><\/p>\n<p data-path-to-node=\"3\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\">D\u1eef li\u1ec7u th\u1ef1c t\u1ebf ch\u1ec9 ra r\u1eb1ng ch\u1ec9 ri\u00eang ba l\u1ed7i c\u01a1 b\u1ea3n &#8211; Qu\u00e1 d\u00f2ng (Overcurrent &#8211; OC), Qu\u00e1 \u00e1p (Overvoltage &#8211; OV) v\u00e0 Ch\u1ea1m \u0111\u1ea5t (Ground Fault &#8211; GF) &#8211; \u0111\u00e3 chi\u1ebfm t\u1edbi 70-80% th\u1eddi gian ng\u1eebng m\u00e1y ngo\u00e0i k\u1ebf ho\u1ea1ch (unplanned downtime). Vi\u1ec7c bi\u1ebft c\u00e1ch ch\u1ea9n \u0111o\u00e1n nh\u1eefng l\u1ed7i n\u00e0y ch\u00ednh l\u00e0 ranh gi\u1edbi gi\u1eefa m\u1ed9t thao t\u00e1c kh\u1eafc ph\u1ee5c ch\u1ec9 m\u1ea5t 5 ph\u00fat v\u00e0 m\u1ed9t s\u1ef1 c\u1ed1 t\u00ea li\u1ec7t h\u1ec7 th\u1ed1ng k\u00e9o d\u00e0i 5 gi\u1edd.<\/span><\/p>\n<p data-path-to-node=\"4\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"4\" data-index-in-node=\"0\">1. L\u1ed7i Qu\u00e1 d\u00f2ng (OC &#8211; Overcurrent): Th\u1ee7 ph\u1ea1m ph\u1ed5 bi\u1ebfn nh\u1ea5t<\/b> <\/span><\/p>\n<p data-path-to-node=\"4\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\">Chi\u1ebfm 40-45% t\u1ed5ng s\u1ed1 c\u00e1c ca h\u1ecfng h\u00f3c VFD, l\u1ed7i OC b\u1ecb k\u00edch ho\u1ea1t khi d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7u ra v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n an to\u00e0n (th\u01b0\u1eddng l\u00e0 150-200% so v\u1edbi d\u00f2ng \u0111\u1ecbnh m\u1ee9c).<\/span><\/p>\n<ul data-path-to-node=\"5\">\n<li>\n<p data-path-to-node=\"5,0,0\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"5,0,0\" data-index-in-node=\"0\">Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5:<\/b> K\u1eb9t c\u01a1 kh\u00ed \u0111\u1ed9t ng\u1ed9t (v\u00ed d\u1ee5: b\u00f3 k\u1eb9t v\u00f2ng bi), c\u00e1ch \u0111i\u1ec7n c\u1ee7a \u0111\u1ed9ng c\u01a1\/c\u00e1p b\u1ecb suy gi\u1ea3m, ho\u1eb7c th\u1eddi gian t\u0103ng t\u1ed1c (acceleration time) \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t qu\u00e1 ng\u1eafn \u0111\u1ed1i v\u1edbi c\u00e1c t\u1ea3i c\u00f3 qu\u00e1n t\u00ednh l\u1edbn.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"5,1,0\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"5,1,0\" data-index-in-node=\"0\">C\u00e1ch kh\u1eafc ph\u1ee5c:<\/b><\/span><\/p>\n<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\" data-path-to-node=\"5,1,1,0,0\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"5,1,1,0,0\" data-index-in-node=\"0\">&#8211; B\u00e0i test c\u00e1ch ly (Isolation Test):<\/b> Ng\u1eaft k\u1ebft n\u1ed1i \u0111\u1ed9ng c\u01a1 v\u00e0 cho VFD ch\u1ea1y kh\u00f4ng t\u1ea3i. N\u1ebfu l\u1ed7i bi\u1ebfn m\u1ea5t, v\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf \u0111\u1ed9ng c\u01a1 ho\u1eb7c t\u1ea3i c\u01a1 kh\u00ed. N\u1ebfu VFD v\u1eabn b\u00e1o l\u1ed7i, ph\u1ea7n c\u1ee9ng b\u00ean trong c\u1ee7a VFD \u0111\u00e3 b\u1ecb h\u1ecfng.<\/span><\/p>\n<p style=\"padding-left: 80px;\" data-path-to-node=\"5,1,1,1,0\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"5,1,1,1,0\" data-index-in-node=\"0\">&#8211; Tinh ch\u1ec9nh th\u00f4ng s\u1ed1:<\/b> T\u0103ng th\u1eddi gian t\u0103ng t\u1ed1c (10 &#8211; 20 gi\u00e2y) ho\u1eb7c s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong h\u00ecnh ch\u1eef S (S-curve) \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c \u0111\u1ee3t xung d\u00f2ng kh\u1edfi \u0111\u1ed9ng qu\u00e1 l\u1edbn.<\/span><\/p>\n<p style=\"padding-left: 80px;\" data-path-to-node=\"5,1,1,2,0\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"5,1,1,2,0\" data-index-in-node=\"0\">&#8211; \u0110o \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n (Megger Test):<\/b> Ki\u1ec3m tra \u0111\u1ed9 c\u00e1ch \u0111i\u1ec7n c\u1ee7a \u0111\u1ed9ng c\u01a1 v\u00e0 c\u00e1p (gi\u00e1 tr\u1ecb \u0111o \u0111\u01b0\u1ee3c ph\u1ea3i &gt; 2M\u03a9).<\/span><\/p>\n<p data-path-to-node=\"6\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"6\" data-index-in-node=\"0\">2. L\u1ed7i Qu\u00e1 \u00e1p (OV &#8211; Overvoltage): &#8220;S\u00e1t th\u1ee7&#8221; n\u0103ng l\u01b0\u1ee3ng t\u00e1i sinh<\/b> <\/span><\/p>\n<p data-path-to-node=\"6\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\">Tr\u00e1i v\u1edbi suy ngh\u0129 th\u00f4ng th\u01b0\u1eddng, l\u1ed7i OV hi\u1ebfm khi xu\u1ea5t ph\u00e1t t\u1eeb ch\u1ea5t l\u01b0\u1ee3ng l\u01b0\u1edbi \u0111i\u1ec7n k\u00e9m. Ch\u00fang h\u1ea7u nh\u01b0 lu\u00f4n b\u1ecb g\u00e2y ra b\u1edfi ch\u00ednh n\u0103ng l\u01b0\u1ee3ng t\u00e1i sinh (regenerative energy) c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/span><\/p>\n<ul data-path-to-node=\"7\">\n<li>\n<p data-path-to-node=\"7,0,0\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"7,0,0\" data-index-in-node=\"0\">Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5:<\/b> Khi m\u1ed9t \u0111\u1ed9ng c\u01a1 \u0111ang quay nhanh nh\u1eadn l\u1ec7nh phanh g\u1ea5p, \u0111\u1ed9ng n\u0103ng c\u1ee7a n\u00f3 s\u1ebd bi\u1ebfn \u0111\u1ed9ng c\u01a1 th\u00e0nh m\u1ed9t m\u00e1y ph\u00e1t \u0111i\u1ec7n, b\u01a1m ng\u01b0\u1ee3c d\u00f2ng \u0111i\u1ec7n tr\u1edf l\u1ea1i VFD. N\u1ebfu VFD kh\u00f4ng th\u1ec3 ti\u00eau t\u00e1n m\u1ee9c n\u0103ng l\u01b0\u1ee3ng n\u00e0y, \u0111i\u1ec7n \u00e1p tr\u00ean bus DC n\u1ed9i b\u1ed9 s\u1ebd t\u0103ng v\u1ecdt, g\u00e2y ra l\u1ed7i ng\u1eaft b\u1ea3o v\u1ec7.<\/span><\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"7,1,0\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"7,1,0\" data-index-in-node=\"0\">C\u00e1ch kh\u1eafc ph\u1ee5c:<\/b><\/span><\/p>\n<p style=\"padding-left: 80px;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"7,1,1,0,0\" data-index-in-node=\"0\">&#8211;\u00a0 K\u00e9o d\u00e0i th\u1eddi gian gi\u1ea3m t\u1ed1c:<\/b> T\u0103ng th\u1eddi gian d\u1eebng (v\u00ed d\u1ee5: t\u1eeb 2 gi\u00e2y l\u00ean 15 gi\u00e2y) \u0111\u1ec3 n\u0103ng l\u01b0\u1ee3ng c\u00f3 \u0111\u1ee7 th\u1eddi gian ti\u00eau t\u00e1n t\u1ef1 nhi\u00ean.<\/span><\/p>\n<p style=\"padding-left: 80px;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"7,1,1,1,0\" data-index-in-node=\"0\">&#8211; L\u1eafp \u0111\u1eb7t \u0110i\u1ec7n tr\u1edf x\u1ea3 (Braking Resistor):<\/b> \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 qu\u00e1n t\u00ednh cao (m\u00e1y ly t\u00e2m, c\u1ea7n tr\u1ee5c), \u0111\u00e2y l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c \u0111\u1ec3 \u0111\u1ed1t ch\u00e1y n\u0103ng l\u01b0\u1ee3ng d\u01b0 th\u1eeba d\u01b0\u1edbi d\u1ea1ng nhi\u1ec7t.<\/span><\/p>\n<p style=\"padding-left: 80px;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"7,1,1,2,0\" data-index-in-node=\"0\">&#8211; Ki\u1ec3m tra l\u01b0\u1edbi \u0111i\u1ec7n (N\u1ebfu l\u1ed7i ng\u1eabu nhi\u00ean):<\/b> N\u1ebfu l\u1ed7i OV x\u1ea3y ra m\u00e0 kh\u00f4ng c\u00f3 l\u1ec7nh d\u1eebng, h\u00e3y l\u1eafp \u0111\u1eb7t cu\u1ed9n kh\u00e1ng \u0111\u1ea7u v\u00e0o (input line reactor) \u0111\u1ec3 \u1ed5n \u0111\u1ecbnh c\u00e1c xung \u0111\u1ed9ng t\u1eeb l\u01b0\u1edbi \u0111i\u1ec7n.<\/span><\/p>\n<p data-path-to-node=\"8\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"8\" data-index-in-node=\"0\">3. L\u1ed7i Ch\u1ea1m \u0111\u1ea5t (GF &#8211; Ground Fault): M\u1ed1i nguy hi\u1ec3m v\u1ec1 an to\u00e0n<\/b> <\/span><\/p>\n<p data-path-to-node=\"8\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\">L\u1ed7i GF kh\u00f4ng ch\u1ec9 l\u00e0m \u0111\u00ecnh tr\u1ec7 s\u1ea3n xu\u1ea5t m\u00e0 c\u00f2n ph\u00e1t \u0111i c\u1ea3nh b\u00e1o v\u1ec1 m\u1ed9t r\u1ee7i ro an to\u00e0n \u0111i\u1ec7n c\u1ef1c k\u1ef3 nghi\u00eam tr\u1ecdng. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 d\u00f2ng \u0111i\u1ec7n \u0111\u00e3 t\u00ecm th\u1ea5y m\u1ed9t \u0111\u01b0\u1eddng t\u1eaft (shortcut) \u0111\u1ec3 r\u00f2 r\u1ec9 xu\u1ed1ng \u0111\u1ea5t (v\u1ecf m\u00e1y ho\u1eb7c khung g\u1ea7m).<\/span><\/p>\n<ul>\n<li>\n<p data-path-to-node=\"9,0,0\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"9,0,0\" data-index-in-node=\"0\">Nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5:<\/b> C\u00e1p ngu\u1ed3n b\u1ecb chu\u1ed9t c\u1eafn ho\u1eb7c n\u1ee9t v\u1ee1, m\u00f4i tr\u01b0\u1eddng c\u00f3 \u0111\u1ed9 \u1ea9m qu\u00e1 cao, ho\u1eb7c cu\u1ed9n d\u00e2y \u0111\u1ed9ng c\u01a1 b\u1ecb ch\u1eadp do qu\u00e1 nhi\u1ec7t.<\/span><\/p>\n<\/li>\n<li>\n<p data-path-to-node=\"9,0,0\"><b style=\"font-family: 'times new roman', times, serif;\" data-path-to-node=\"9,1,0\" data-index-in-node=\"0\">C\u00e1ch kh\u1eafc ph\u1ee5c:<\/b><\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"9,0,0\">\n<p style=\"padding-left: 80px;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"9,1,1,0,0\" data-index-in-node=\"0\">&#8211; Quy t\u1eafc An to\u00e0n V\u00e0ng:<\/b> Th\u1ef1c hi\u1ec7n quy tr\u00ecnh Kh\u00f3a v\u00e0 Treo bi\u1ec3n c\u1ea3nh b\u00e1o (Lock-Out\/Tag-Out &#8211; LOTO) tr\u01b0\u1edbc ti\u00ean. <b data-path-to-node=\"9,1,1,0,0\" data-index-in-node=\"107\">Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng<\/b> s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 \u0111o Megger khi c\u00e1p v\u1eabn \u0111ang k\u1ebft n\u1ed1i v\u1edbi VFD \u2014 \u0111i\u1ec7n \u00e1p ki\u1ec3m tra cao s\u1ebd ph\u00e1 h\u1ee7y ngay l\u1eadp t\u1ee9c c\u00e1c bo m\u1ea1ch n\u1ed9i b\u1ed9 c\u1ee7a VFD<\/span><\/p>\n<p style=\"padding-left: 80px;\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"9,1,1,1,0\" data-index-in-node=\"0\">&#8211; Ng\u1eaft k\u1ebft n\u1ed1i &amp; Ki\u1ec3m tra:<\/b> Th\u00e1o r\u1eddi ho\u00e0n to\u00e0n c\u00e1c d\u00e2y pha kh\u1ecfi VFD. S\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 Megger \u0111\u1ec3 \u0111o tr\u1ef1c ti\u1ebfp c\u00e1p v\u00e0 \u0111\u1ed9ng c\u01a1 v\u1edbi h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t. N\u1ebfu k\u1ebft qu\u1ea3 hi\u1ec3n th\u1ecb \u1edf d\u1ea3i K\u03a9 ho\u1eb7c 0\u03a9, \u0111i\u1ec1u n\u00e0y x\u00e1c nh\u1eadn t\u00ecnh tr\u1ea1ng ch\u1eadp \u0111\u1ea5t ho\u00e0n to\u00e0n (dead short).<\/span><\/p>\n<p data-path-to-node=\"10\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\"><b data-path-to-node=\"10\" data-index-in-node=\"0\">K\u1ebft lu\u1eadn: Ng\u1eebng ph\u1ecfng \u0111o\u00e1n, h\u00e3y b\u1eaft \u0111\u1ea7u ghi ch\u00e9p<\/b> <\/span><\/p>\n<p data-path-to-node=\"10\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\">M\u1ed9t VFD kh\u00f4ng bao gi\u1edd h\u1ecfng m\u1ed9t c\u00e1ch ng\u1eabu nhi\u00ean; n\u00f3 lu\u00f4n ph\u00e1t \u0111i nh\u1eefng t\u00edn hi\u1ec7u c\u1ea3nh b\u00e1o. B\u1eb1ng c\u00e1ch ghi l\u1ea1i ch\u00ednh x\u00e1c c\u00e1c m\u00e3 l\u1ed7i tr\u01b0\u1edbc khi reset (\u0111\u1eb7t l\u1ea1i), gi\u1eef cho qu\u1ea1t t\u1ea3n nhi\u1ec7t v\u00e0 bo m\u1ea1ch lu\u00f4n s\u1ea1ch s\u1ebd, c\u00f9ng v\u1edbi vi\u1ec7c trang b\u1ecb s\u1eb5n c\u00e1c c\u00f4ng c\u1ee5 ch\u1ea9n \u0111o\u00e1n ph\u00f9 h\u1ee3p, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 chuy\u1ec3n tr\u1ea1ng th\u00e1i t\u1eeb ho\u1ea3ng lo\u1ea1n th\u1ee5 \u0111\u1ed9ng sang b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n (predictive maintenance).<\/span><\/p>\n<p data-path-to-node=\"11\"><span style=\"font-family: 'times new roman', times, serif; font-size: 16px;\">B\u1ea3o v\u1ec7 VFD kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 k\u1ef9 thu\u1eadt \u2014 \u0111\u00f3 l\u00e0 chi\u1ebfn l\u01b0\u1ee3c c\u1ed1t l\u00f5i \u0111\u1ec3 b\u1ea3o v\u1ec7 bi\u00ean l\u1ee3i nhu\u1eadn c\u1ee7a nh\u00e0 m\u00e1y.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>M\u1ed7i gi\u1edd, m\u1ed9t d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ph\u1ea3i ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. C\u00e1c nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 b\u1ecb thi\u1ec7t h\u1ea1i t\u1eeb<\/p>","protected":false},"author":7,"featured_media":17739,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-17738","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.5 (Yoast SEO v25.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>KH\u1ee6NG HO\u1ea2NG NG\u1eeaNG M\u00c1Y DO VFD: &quot;K\u1eba H\u1ee6Y DI\u1ec6T TH\u1ea6M L\u1eb6NG&quot; TRONG C\u00c1C NH\u00c0 M\u00c1Y HI\u1ec6N \u0110\u1ea0I - LC Tech<\/title>\n<meta name=\"description\" content=\"M\u1ed7i gi\u1edd, m\u1ed9t d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ph\u1ea3i ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. C\u00e1c nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 b\u1ecb thi\u1ec7t h\u1ea1i t\u1eeb 1.000 \u0111\u1ebfn 10.000 USD. Th\u01b0\u1eddng th\u00ec th\u1ee7 ph\u1ea1m l\u1ea1i \u0111\u1ebfn t\u1eeb m\u1ed9t s\u1ef1 c\u1ed1 ng\u1eaft (trip) t\u01b0\u1edfng ch\u1eebng nh\u1ecf c\u1ee7a bi\u1ebfn t\u1ea7n (VFD - Variable Frequency Drive).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lctech.vn\/en\/khung-hoang-ngung-may-do-vfd-ke-huy-diet-tham-lang-trong-cac-nha-may-hien-dai\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"KH\u1ee6NG HO\u1ea2NG NG\u1eeaNG M\u00c1Y DO VFD: &quot;K\u1eba H\u1ee6Y DI\u1ec6T TH\u1ea6M L\u1eb6NG&quot; TRONG C\u00c1C NH\u00c0 M\u00c1Y HI\u1ec6N \u0110\u1ea0I\" \/>\n<meta property=\"og:description\" content=\"M\u1ed7i gi\u1edd, m\u1ed9t d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t ph\u1ea3i ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. 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