{"id":15604,"date":"2026-01-06T16:08:17","date_gmt":"2026-01-06T08:08:17","guid":{"rendered":"http:\/\/www.erun-tech.com\/?post_type=dt_portfolio&p=15604"},"modified":"2026-01-06T16:08:17","modified_gmt":"2026-01-06T08:08:17","slug":"ups-bujianduandianyuanxitongshezhicaozuoyuweihushiwuzhinan","status":"publish","type":"dt_portfolio","link":"http:\/\/www.erun-tech.com\/vi\/project\/ups-bujianduandianyuanxitongshezhicaozuoyuweihushiwuzhinan","title":{"rendered":"H\u1ec7 th\u1ed1ng ngu\u1ed3n \u0111i\u1ec7n li\u00ean t\u1ee5c UPS: H\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh c\u00e0i \u0111\u1eb7t, v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec"},"content":{"rendered":"
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H\u1ec7 th\u1ed1ng ngu\u1ed3n \u0111i\u1ec7n li\u00ean t\u1ee5c UPS: H\u01b0\u1edbng d\u1eabn th\u1ef1c h\u00e0nh c\u00e0i \u0111\u1eb7t, v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o tr\u00ec<\/h1>\n
H\u01b0\u1edbng d\u1eabn \u0111\u1ea3m b\u1ea3o ngu\u1ed3n \u0111i\u1ec7n cho h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh c\u1ee7a t\u00e0u<\/div>\n<\/div>\n
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Ph\u1ea7n 1: T\u1ed5ng quan v\u1ec1 UPS<\/h2>\n
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UPS l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Uninterruptible Power System (H\u1ec7 th\u1ed1ng ngu\u1ed3n \u0111i\u1ec7n li\u00ean t\u1ee5c). Khi ngu\u1ed3n \u0111i\u1ec7n l\u01b0\u1edbi g\u1eb7p s\u1ef1 c\u1ed1 v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng, nh\u01b0 s\u1ed1c \u0111i\u1ec7n, \u0111\u1ec9nh \u00e1p cao, qu\u00e1 \u00e1p t\u1ea1m th\u1eddi, s\u1ee5t \u00e1p, nhi\u1ec5u \u0111\u01b0\u1eddng d\u00e2y, l\u1ec7ch t\u1ea7n s\u1ed1, \u00e1p th\u1ea5p li\u00ean t\u1ee5c, gi\u00e1n \u0111o\u1ea1n ngu\u1ed3n \u0111i\u1ec7n, UPS s\u1ebd \u0111\u1ea3m b\u1ea3o \u0111\u1ea7u ra \u1ed5n \u0111\u1ecbnh, tinh khi\u1ebft, kh\u00f4ng gi\u00e1n \u0111o\u1ea1n v\u1edbi \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u h\u00ecnh sin, gi\u00fap h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n t\u01b0\u01a1ng \u1ee9ng ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n

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Logic chuy\u1ec3n \u0111\u1ed5i c\u1ed1t l\u00f5i:<\/strong>Th\u00f4ng th\u01b0\u1eddng, UPS nh\u1eadn v\u00e0o l\u00e0 \u0111i\u1ec7n xoay chi\u1ec1u 220V v\u00e0 c\u0169ng xu\u1ea5t ra \u0111i\u1ec7n xoay chi\u1ec1u 220V, nh\u01b0ng qua qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n t\u1eed v\u00e0 l\u01b0u tr\u1eef trong \u1eafc quy. Khi ngu\u1ed3n \u0111i\u1ec7n 220 V ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, b\u1ed9 ch\u1ec9nh l\u01b0u s\u1ebd duy tr\u00ec s\u1ea1c pin, \u0111\u1ed3ng th\u1eddi c\u00f3 th\u1ec3 xu\u1ea5t ra \u0111i\u1ec7n xoay chi\u1ec1u 220V th\u00f4ng qua b\u1ed9 bi\u1ebfn t\u1ea7n; khi ngu\u1ed3n \u0111i\u1ec7n 220 V b\u1ecb ng\u1eaft, pin s\u1ebd ti\u1ebfp t\u1ee5c duy tr\u00ec xu\u1ea5t ra 220V trong m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh th\u00f4ng qua qu\u00e1 tr\u00ecnh x\u1ea3 v\u00e0 bi\u1ebfn t\u1ea7n, \u0111\u1ea3m b\u1ea3o ngu\u1ed3n \u0111i\u1ec7n li\u00ean t\u1ee5c.<\/p>\n

C\u01a1 ch\u1ebf b\u00e1o \u0111\u1ed9ng: Khi n\u0103ng l\u01b0\u1ee3ng pin s\u1eafp c\u1ea1n ki\u1ec7t, h\u1ec7 th\u1ed1ng s\u1ebd ph\u00e1t ra b\u00e1o \u0111\u1ed9ng b\u1eb1ng \u00e2m thanh v\u00e0 \u00e1nh s\u00e1ng. Khi qu\u00e1 t\u1ea3i (t\u1ea3i 150%), h\u1ec7 th\u1ed1ng s\u1ebd chuy\u1ec3n sang tr\u1ea1ng th\u00e1i bypass v\u00e0 t\u1ef1 \u0111\u1ed9ng tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i b\u00ecnh th\u01b0\u1eddng khi t\u1ea3i tr\u1edf l\u1ea1i b\u00ecnh th\u01b0\u1eddng.<\/p>\n<\/div>\n

Ba lo\u1ea1i UPS ch\u00ednh<\/h3>\n
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1. UPS d\u1ef1 ph\u00f2ng:<\/strong>Trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng, ch\u1ec9 l\u1ecdc \u0111\u1ea7u ra v\u00e0 s\u1ea1c. Sau khi ngu\u1ed3n \u0111i\u1ec7n b\u1ecb ng\u1eaft, chuy\u1ec3n sang ngu\u1ed3n \u0111i\u1ec7n t\u1eeb pin\/bi\u1ebfn t\u1ea7n.<\/div>\n
2. UPS tr\u1ef1c tuy\u1ebfn:<\/strong>Bi\u1ebfn t\u1ea7n lu\u00f4n ho\u1ea1t \u0111\u1ed9ng, kh\u00f4ng c\u00f3 th\u1eddi gian chuy\u1ec3n \u0111\u1ed5i. C\u00f3 ch\u1ee9c n\u0103ng \u1ed5n \u0111\u1ecbnh \u0111i\u1ec7n \u00e1p v\u00e0 ch\u1ed1ng nhi\u1ec5u s\u00f3ng \u0111i\u1ec7n.<\/div>\n
3. UPS tr\u1ef1c tuy\u1ebfn hai chi\u1ec1u:<\/strong>Chuy\u1ec3n \u0111\u1ed5i AC\u2192DC\u2192AC, cung c\u1ea5p \u0111i\u1ec7n \u00e1p s\u1ea1ch v\u00e0 \u1ed5n \u0111\u1ecbnh. \u1eaec quy \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi \u0111\u01b0\u1eddng d\u00e2y DC.<\/div>\n<\/div>\n

C\u1ea5u tr\u00fac th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i<\/h3>\n
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1. B\u1ed9 ch\u1ec9nh l\u01b0u (AC\u2192DC)<\/strong>
\n\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng cho t\u1ea3i ho\u1eb7c bi\u1ebfn t\u1ea7n, v\u00e0 l\u00e0m b\u1ed9 s\u1ea1c \u0111\u1ec3 cung c\u1ea5p \u0111i\u1ec7n cho \u1eafc quy.<\/div>\n
2. \u1eaec quy (l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng)<\/strong>
\nDung l\u01b0\u1ee3ng quy\u1ebft \u0111\u1ecbnh th\u1eddi gian duy tr\u00ec x\u1ea3 \u0111i\u1ec7n. Chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng h\u00f3a h\u1ecdc th\u00e0nh n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/div>\n
3. Bi\u1ebfn t\u1ea7n (DC\u2192AC)<\/strong>
\nG\u1ed3m c\u1ea7u bi\u1ebfn t\u1ea7n, logic \u0111i\u1ec1u khi\u1ec3n v\u00e0 m\u1ea1ch l\u1ecdc.<\/div>\n
4. C\u00f4ng t\u1eafc t\u0129nh (chuy\u1ec3n \u0111\u1ed5i kh\u00f4ng ti\u1ebfp x\u00fac)<\/strong>
\n\u0110\u01b0\u1ee3c c\u1ea5u th\u00e0nh t\u1eeb SCR, chia th\u00e0nh lo\u1ea1i chuy\u1ec3n \u0111\u1ed5i (chuy\u1ec3n \u0111\u1ed5i ngu\u1ed3n \u0111i\u1ec7n hai \u0111\u01b0\u1eddng) v\u00e0 lo\u1ea1i song song.<\/div>\n<\/div>\n<\/div>\n<\/section>\n
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Ph\u1ea7n 2: S\u1eed d\u1ee5ng v\u00e0 b\u1ea3o tr\u00ec UPS<\/h2>\n
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1. Th\u1ee9 t\u1ef1 b\u1eadt v\u00e0 t\u1eaft UPS<\/h3>\n

1. L\u1ea7n \u0111\u1ea7u ti\u00ean kh\u1edfi \u0111\u1ed9ng:<\/strong>C\u00f4ng t\u1eafc pin l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng \u2192 C\u00f4ng t\u1eafc bypass t\u1ef1 \u0111\u1ed9ng \u2192 C\u00f4ng t\u1eafc \u0111\u1ea7u ra \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed \u201cON\u201d. Nh\u1ea5n n\u00fat \u201cB\u1eadt\u201d \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng, ch\u1edd \u0111\u00e8n \u201cBypass\u201d t\u1eaft v\u00e0 chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 c\u1ea5p ngu\u1ed3n b\u1eb1ng bi\u1ebfn t\u1ea7n. Sau 10 ph\u00fat kh\u00f4ng t\u1ea3i, t\u0103ng d\u1ea7n t\u1ea3i t\u1eeb nh\u1ecf \u0111\u1ebfn l\u1edbn.<\/p>\n

2. Kh\u1edfi \u0111\u1ed9ng h\u00e0ng ng\u00e0y:<\/strong>Nh\u1ea5n n\u00fat \u201cB\u1eadt\u201d, sau kho\u1ea3ng 20 ph\u00fat \u1ed5n \u0111\u1ecbnh, b\u1eadt c\u00f4ng t\u1eafc t\u1ea3i (c\u00f4ng t\u1eafc b\u1ea3o tr\u00ec th\u1ee7 c\u00f4ng ph\u1ea3i \u1edf tr\u1ea1ng th\u00e1i \u201cT\u1eaeT\u201d).<\/p>\n

3. T\u1eaft m\u00e1y:<\/strong>T\u1eaft t\u1ea3i tr\u01b0\u1edbc, \u0111\u1ec3 UPS ch\u1ea1y kh\u00f4ng t\u1ea3i trong 10 ph\u00fat \u0111\u1ec3 t\u1ea3n nhi\u1ec7t, sau \u0111\u00f3 nh\u1ea5n n\u00fat \u201cT\u1eaft\u201d tr\u00ean b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n.<\/p>\n<\/div>\n

II. L\u01b0u \u00fd khi s\u1eed d\u1ee5ng UPS<\/h3>\n
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  • M\u00f4i tr\u01b0\u1eddng: Tr\u00e1nh b\u1ee5i, kh\u00f3i d\u1ea7u x\u00e2m nh\u1eadp.<\/li>\n
  • Th\u1ee9 t\u1ef1: Kh\u1edfi \u0111\u1ed9ng (ngu\u1ed3n \u0111i\u1ec7n \u2192 UPS \u2192 t\u1ea3i); T\u1eaft m\u00e1y (t\u1ea3i \u2192 UPS \u2192 ngu\u1ed3n \u0111i\u1ec7n).<\/li>\n
  • Ti\u1ebfp x\u00fac: \u0110\u1ea3m b\u1ea3o c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 c\u1ea7u dao, dao c\u1eaft, \u1ed5 c\u1eafm... ti\u1ebfp x\u00fac t\u1ed1t, kh\u00f4ng c\u00f3 tia l\u1eeda \u0111i\u1ec7n.<\/li>\n<\/ul>\n
      \n
    • Gi\u1edbi h\u1ea1n t\u1ea3i: Kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi t\u1ea3i c\u1ea3m \u1ee9ng (nh\u01b0 m\u00e1y khoan \u0111i\u1ec7n), c\u1ea5m qu\u00e1 t\u1ea3i.<\/strong><\/li>\n
    • T\u1ea3n nhi\u1ec7t: V\u1ec7 sinh l\u1ed7 th\u00f4ng gi\u00f3 m\u1ed7i 2~3 th\u00e1ng.<\/li>\n<\/ul>\n<\/div>\n

      III. B\u1ea3o tr\u00ec v\u00e0 ki\u1ec3m tra h\u00e0ng ng\u00e0y (t\u1eadp trung v\u00e0o pin)<\/h3>\n

      C\u00f4ng vi\u1ec7c ch\u00ednh l\u00e0 ch\u1ed1ng b\u1ee5i v\u00e0 b\u1ea3o d\u01b0\u1ee1ng pin. M\u1ed7i qu\u00fd c\u1ea7n v\u1ec7 sinh k\u1ef9 l\u01b0\u1ee1ng m\u00e1y ch\u1ee7. Do t\u1ef1 ki\u1ec3m tra l\u1ed7i UPS c\u00f3 th\u1ec3 c\u00f3 b\u00e1o c\u00e1o sai, vi\u1ec7c s\u1eeda ch\u1eefa v\u1eabn c\u1ea7n ph\u00e2n t\u00edch s\u00e2u.<\/p>\n

      \n
      H\u01b0\u1edbng d\u1eabn b\u1ea3o tr\u00ec \u1eafc quy<\/div>\n
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      \u25cf Quy tr\u00ecnh x\u1ea3 \u0111i\u1ec7n:<\/strong>Trong ch\u1ebf \u0111\u1ed9 s\u1ea1c n\u1ed5i, \u00edt nh\u1ea5t m\u1ed9t l\u1ea7n m\u1ed7i n\u0103m ph\u1ea3i x\u1ea3 \u0111i\u1ec7n, tr\u01b0\u1edbc khi x\u1ea3 \u0111i\u1ec7n ph\u1ea3i c\u00e2n b\u1eb1ng s\u1ea1c. Ch\u00fa \u00fd v\u00e0 x\u1eed l\u00fd pin k\u00e9m hi\u1ec7u su\u1ea5t.<\/p>\n

      \u25cf D\u1ea5u hi\u1ec7u pin:<\/strong>M\u1ed7i nh\u00f3m c\u00f3 8 pin \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u, \u0111o v\u00e0 ghi ch\u00e9p \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 l\u00e0m tham chi\u1ebfu cho to\u00e0n b\u1ed9 nh\u00f3m.<\/p>\n

      \u25cf Ki\u1ec3m tra h\u00e0ng ng\u00e0y:<\/strong>\u0110i\u1ec7n \u00e1p, nhi\u1ec7t \u0111\u1ed9, \u0103n m\u00f2n t\u1ea1i c\u00e1c \u0111i\u1ec3m k\u1ebft n\u1ed1i, bi\u1ebfn d\u1ea1ng v\u00e0 r\u00f2 r\u1ec9 v\u1ecf, kh\u00ed axit tho\u00e1t ra t\u1eeb van an to\u00e0n.<\/p>\n

      \u25cf X\u1eed l\u00fd s\u1ef1 c\u1ed1:<\/strong>Ph\u00e1t hi\u1ec7n c\u1ef1c ng\u01b0\u1ee3c, gi\u1ea3m \u00e1p l\u1edbn, ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t l\u1edbn ho\u1eb7c pin b\u1ecb r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng c\u1ea7n \u0111\u01b0\u1ee3c s\u1eeda ch\u1eefa ho\u1eb7c thay th\u1ebf k\u1ecbp th\u1eddi.Kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p c\u00e1c lo\u1ea1i pin c\u00f3 dung l\u01b0\u1ee3ng\/hi\u1ec7u su\u1ea5t\/nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c nhau.<\/strong><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

      \n

      Ph\u1ea7n 3: V\u00ed d\u1ee5 v\u1ec1 c\u00e0i \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec UPS<\/h2>\n
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      I. Ki\u1ec3m tra tr\u1ea1ng th\u00e1i ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a UPS<\/h3>\n
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      1. Ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng:<\/strong>S\u1ea1c AC\u2192DC v\u00e0 lo\u1ea1i b\u1ecf \u00f4 nhi\u1ec5m (s\u00f3ng \u0111i\u1ec7n, ti\u1ebfng \u1ed3n, v.v.), cung c\u1ea5p \u0111i\u1ec7n \u00e1p \u1ed5n \u0111\u1ecbnh.<\/div>\n
      2. Ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a pin:<\/strong>Khi ngu\u1ed3n \u0111i\u1ec7n l\u01b0\u1edbi b\u1ecb s\u1ef1 c\u1ed1, b\u1ed9 chuy\u1ec3n \u0111\u1ed5i DC\u2192AC s\u1ebd cung c\u1ea5p \u0111i\u1ec7n cho \u0111\u1ebfn khi h\u1ebft \u0111i\u1ec7n ho\u1eb7c ngu\u1ed3n \u0111i\u1ec7n l\u01b0\u1edbi tr\u1edf l\u1ea1i b\u00ecnh th\u01b0\u1eddng.<\/div>\n
      3. Ch\u1ebf \u0111\u1ed9 ch\u1ea1y song song:<\/strong>Khi qu\u00e1 t\u1ea3i ho\u1eb7c h\u1ecfng h\u00f3c, k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp v\u1edbi ngu\u1ed3n \u0111i\u1ec7n l\u01b0\u1edbi. S\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 \u0111\u1ed3ng b\u1ed9 kh\u00f3a pha \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o pha \u0111\u1ed3ng b\u1ed9.<\/div>\n<\/div>\n
      \n

      Gi\u1ea3i th\u00edch bi\u1ec3u \u0111\u1ed3 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n APC UPS<\/h4>\n
      \"H\u00ecnh

      H\u00ecnh 10-1 B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n APCUPS<\/p><\/div>\n

      \n
      A: T\u1ea3i<\/strong> Hi\u1ec3n th\u1ecb t\u1ea3i tr\u1ecdng<\/div>\n
      B: Tr\u1ef1c tuy\u1ebfn<\/strong> Tr\u1ea1ng th\u00e1i ngu\u1ed3n \u0111i\u1ec7n s\u1ea1ch tr\u1ef1c tuy\u1ebfn<\/div>\n
      C: S\u1eed d\u1ee5ng pin<\/strong> Ngu\u1ed3n \u0111i\u1ec7n pin (c\u00f3 b\u00e1o \u0111\u1ed9ng)<\/div>\n
      D: B\u1ecf qua<\/strong> Ch\u1ebf \u0111\u1ed9 bypass<\/div>\n
      E: Qu\u00e1 t\u1ea3i<\/strong> C\u1ea3nh b\u00e1o qu\u00e1 t\u1ea3i (c\u00f3 b\u00e1o \u0111\u1ed9ng)<\/div>\n
      F: L\u1ed7i<\/strong> Hi\u1ec3n th\u1ecb l\u1ed7i n\u1ed9i b\u1ed9<\/div>\n
      G: Thay pin<\/strong> C\u1ea3nh b\u00e1o thay pin<\/div>\n
      H: S\u1ea1c pin<\/strong> T\u1ef7 l\u1ec7 s\u1ea1c\/\u0110i\u1ec7n \u00e1p l\u01b0\u1edbi \u0111i\u1ec7n<\/div>\n
      I: T\u1eaft<\/strong> N\u00fat t\u1eaft m\u00e1y (l\u00f5m v\u00e0o trong \u0111\u1ec3 tr\u00e1nh nh\u1ea5n nh\u1ea7m)<\/div>\n
      J: B\u1eadt\/Ki\u1ec3m tra<\/strong> Kh\u1edfi \u0111\u1ed9ng\/T\u1ef1 ki\u1ec3m tra\/Hi\u1ec3n th\u1ecb \u0111i\u1ec7n \u00e1p<\/div>\n<\/div>\n<\/div>\n

      II. Th\u1ef1c h\u00e0nh ki\u1ec3m tra chuy\u1ec3n \u0111\u1ed5i ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a UPS<\/h3>\n
      \n

      Quy tr\u00ecnh ki\u1ec3m tra SOP:<\/strong><\/p>\n

        \n
      1. T\u1eaft t\u1ea5t c\u1ea3 c\u00e1c t\u1ea3i tr\u1ecdng quan tr\u1ecdng.<\/li>\n
      2. T\u1eaft c\u00f4ng t\u1eafc ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a t\u00e0u (m\u00f4 ph\u1ecfng m\u1ea5t \u0111i\u1ec7n).<\/li>\n
      3. S\u1eed d\u1ee5ng pin d\u1ef1 ph\u00f2ng \u0111\u1ec3 kh\u1edfi \u0111\u1ed9ng UPS, chuy\u1ec3n sangCh\u1ebf \u0111\u1ed9 c\u1ea5p ngu\u1ed3n b\u1eb1ng pin<\/strong>Ki\u1ec3m tra \u0111i\u1ec7n \u00e1p ngh\u1ecbch \u0111\u1ea3o v\u00e0 \u0111\u00e8n hi\u1ec3n th\u1ecb.<\/li>\n
      4. \u0110\u00f3ng c\u00f4ng t\u1eafc ngu\u1ed3n \u0111i\u1ec7n t\u00e0u, ki\u1ec3m tra xem UPS c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n tr\u1edf l\u1ea1i kh\u00f4ng.Ch\u1ebf \u0111\u1ed9 b\u00ecnh th\u01b0\u1eddng<\/strong>(Cung c\u1ea5p \u0111i\u1ec7n cho t\u00e0u).<\/li>\n
      5. N\u1ebfu chuy\u1ec3n \u0111\u1ed5i b\u1ea5t th\u01b0\u1eddng, sau v\u00e0i gi\u00e2y, h\u00e3y t\u1eaft l\u1ea1i c\u00f4ng t\u1eafc \u0111i\u1ec7n l\u01b0\u1edbi v\u00e0 quan s\u00e1t tr\u1ea1ng th\u00e1i bi\u1ebfn t\u1ea7n.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/section>\n