{"id":1834,"date":"2026-09-28T01:52:41","date_gmt":"2026-09-28T01:52:41","guid":{"rendered":"https:\/\/ritoks.com\/?p=1834"},"modified":"2026-10-05T15:30:29","modified_gmt":"2026-10-05T15:30:29","slug":"pv-string-array-fuse-protection-context","status":"publish","type":"post","link":"https:\/\/ritoks.com\/vi\/pv-string-array-fuse-protection-context\/","title":{"rendered":"B\u1ea3o v\u1ec7 b\u1eb1ng c\u1ea7u ch\u00ec cho chu\u1ed7i v\u00e0 m\u1ea3ng PV: B\u1ed1i c\u1ea3nh \u1ee9ng d\u1ee5ng v\u00e0 ki\u1ec3m ch\u1ee9ng"},"content":{"rendered":"

Vi\u1ec7c b\u1ea3o v\u1ec7 b\u1eb1ng c\u1ea7u ch\u00ec cho chu\u1ed7i v\u00e0 m\u1ea3ng PV l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh v\u1ec1 h\u1ec7 th\u1ed1ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 vi\u1ec7c sao ch\u00e9p k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec t\u1eeb nh\u00e3n m\u00f4-\u0111un. Ng\u01b0\u1eddi thi\u1ebft k\u1ebf ph\u1ea3i n\u1eafm r\u00f5 c\u00e1ch c\u00e1c chu\u1ed7i \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p, c\u00e1c ngu\u1ed3n n\u00e0o c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 c\u1ed1, \u0111i\u1ec7n \u00e1p m\u1ea1ch h\u1edf trong \u0111i\u1ec1u ki\u1ec7n th\u1eddi ti\u1ebft l\u1ea1nh c\u00f3 th\u1ec3 l\u00e0 bao nhi\u00eau v\u00e0 thi\u1ebft b\u1ecb n\u00e0o m\u00e0 c\u1ea7u ch\u00ec \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o v\u1ec7. Danh m\u1ee5c c\u1ea7u ch\u00ec gPV ch\u1ec9 x\u00e1c \u0111\u1ecbnh lo\u1ea1i linh ki\u1ec7n; b\u1ea3n th\u00e2n n\u00f3 kh\u00f4ng quy\u1ebft \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ea7n l\u1eafp \u0111\u1eb7t c\u1ea7u ch\u00ec.<\/p>\n

H\u01b0\u1edbng d\u1eabn \u1ee9ng d\u1ee5ng n\u00e0y gi\u1ea3i th\u00edch nh\u1eefng y\u1ebfu t\u1ed1 c\u1ea7n ki\u1ec3m tra t\u1ea1i c\u00e1c v\u1ecb tr\u00ed d\u00e2y d\u1eabn v\u00e0 m\u1ea3ng. T\u00e0i li\u1ec7u n\u00e0y kh\u00f4ng quy \u0111\u1ecbnh m\u1ee9c \u0111\u1ecbnh m\u1ee9c c\u1ee7a c\u1ea7u ch\u00ec c\u0169ng nh\u01b0 kh\u00f4ng kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng m\u1ecdi h\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi \u0111\u1ec1u c\u1ea7n c\u00f9ng m\u1ed9t ph\u01b0\u01a1ng \u00e1n b\u1ea3o v\u1ec7. Thi\u1ebft k\u1ebf cu\u1ed1i c\u00f9ng ph\u1ea3i tu\u00e2n theo d\u1eef li\u1ec7u ch\u00ednh x\u00e1c c\u1ee7a m\u00f4-\u0111un, h\u01b0\u1edbng d\u1eabn c\u1ee7a b\u1ed9 bi\u1ebfn t\u1ea7n, \u0111i\u1ec1u ki\u1ec7n t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng v\u00e0 c\u00e1c quy \u0111\u1ecbnh \u0111i\u1ec7n \u00e1p d\u1ee5ng.<\/p>\n

L\u1eadp s\u01a1 \u0111\u1ed3 ki\u1ebfn tr\u00fac ngu\u1ed3n \u0111i\u1ec7n m\u1eb7t tr\u1eddi<\/h2>\n

V\u1ebd t\u1eebng chu\u1ed7i, b\u1ed9 gh\u00e9p, \u0111\u1ea7u ra m\u1ea3ng v\u00e0 b\u1ed9 bi\u1ebfn t\u1ea7n ph\u00eda h\u1ea1 l\u01b0u ho\u1eb7c thi\u1ebft b\u1ecb DC. Ghi ch\u00fa s\u1ed1 l\u01b0\u1ee3ng chu\u1ed7i n\u1ed1i song song v\u00e0 b\u1ea5t k\u1ef3 \u0111\u01b0\u1eddng d\u1eabn thay th\u1ebf n\u00e0o c\u00f3 th\u1ec3 g\u00e2y hi\u1ec7n t\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c v\u00e0o chu\u1ed7i b\u1ecb s\u1ef1 c\u1ed1. Vi\u1ec7c c\u1ea7n thi\u1ebft ph\u1ea3i c\u00f3 b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng cho chu\u1ed7i ph\u1ee5 thu\u1ed9c v\u00e0o d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c c\u00f3 th\u1ec3 x\u1ea3y ra v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a thi\u1ebft b\u1ecb, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n d\u1ef1a tr\u00ean th\u1ef1c t\u1ebf r\u1eb1ng m\u1ea1ch \u0111\u00f3 l\u00e0 m\u1ea1ch n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi.<\/p>\n

Cung c\u1ea5p d\u1eef li\u1ec7u m\u00f4-\u0111un bao g\u1ed3m d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch, \u0111i\u1ec7n \u00e1p h\u1edf m\u1ea1ch v\u00e0 \u0111\u1ecbnh m\u1ee9c t\u1ed1i \u0111a c\u1ee7a c\u1ea7u ch\u00ec n\u1ed1i ti\u1ebfp ho\u1eb7c gi\u1edbi h\u1ea1n kh\u00e1c do nh\u00e0 s\u1ea3n xu\u1ea5t quy \u0111\u1ecbnh (n\u1ebfu c\u00f3). L\u01b0u phi\u00ean b\u1ea3n t\u00e0i li\u1ec7u m\u00f4-\u0111un trong t\u1ec7p thi\u1ebft k\u1ebf. M\u1ed9t m\u1ea3ng g\u1ed3m m\u1ed9t chu\u1ed7i ho\u1ea1t \u0111\u1ed9ng kh\u00e1c v\u1edbi b\u1ed9 gh\u00e9p n\u1ed1i c\u00f3 nhi\u1ec1u chu\u1ed7i v\u00ec c\u00e1c chu\u1ed7i kh\u00e1c c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n g\u00e2y ra s\u1ef1 c\u1ed1.<\/p>\n

Record how strings enter combiner boxes, whether both polarities require protection under the site design, and the earthing arrangement. Do not copy another project’s fuse placement without checking its source topology. A change in the number of parallel strings can change the available reverse current and require review.<\/p>\n

Ph\u00e2n bi\u1ec7t v\u1ecb tr\u00ed trong chu\u1ed7i v\u00e0 m\u1ea3ng<\/h2>\n

V\u1ecb tr\u00ed c\u1ea7u ch\u00ec d\u00e2y b\u1ea3o v\u1ec7 m\u1ed9t nh\u00e1nh trong m\u1ea1ng song song theo thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. V\u1ecb tr\u00ed c\u1ea7u ch\u00ec \u0111\u1ea7u ra m\u1ea3ng n\u1eb1m g\u1ea7n \u0111\u1ea7u ra t\u1ed5ng h\u1ee3p h\u01a1n v\u00e0 c\u00f3 th\u1ec3 c\u00f3 d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c v\u00e0 t\u1ef7 l\u1ec7 ho\u1ea1t \u0111\u1ed9ng khi s\u1ef1 c\u1ed1 kh\u00e1c nhau. Kh\u00f4ng n\u00ean cho r\u1eb1ng c\u00f9ng m\u1ed9t ki\u1ec3u th\u00e2n c\u1ea7u ch\u00ec ph\u00f9 h\u1ee3p cho c\u1ea3 hai v\u1ecb tr\u00ed n\u1ebfu kh\u00f4ng c\u00f3 d\u1eef li\u1ec7u t\u01b0\u01a1ng \u1ee9ng v\u1ec1 d\u00f2ng \u0111i\u1ec7n, \u0111i\u1ec7n \u00e1p v\u00e0 kh\u1ea3 n\u0103ng ng\u1eaft m\u1ea1ch.<\/p>\n

S\u1eed d\u1ee5ng b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u00e0nh ri\u00eang cho t\u1eebng v\u1ecb tr\u00ed: m\u00e3 \u0111\u1ecbnh danh m\u1ea1ch, d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c, \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a, d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 d\u1ef1 ki\u1ebfn, k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn, gi\u00e1 \u0111\u1ee1 v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh. B\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh r\u00f5 li\u1ec7u \u0111\u01b0\u1eddng d\u00e2y \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t thu\u1ed9c v\u1ec1 m\u1ed9t chu\u1ed7i, m\u1ed9t \u0111\u1ea7u ra k\u1ebft h\u1ee3p hay m\u1ea1ch DC ph\u1ee5. T\u1eeb \u0111\u00f3, c\u00e1c trang th\u00f4ng tin c\u1ee7a nh\u00e0 cung c\u1ea5p c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean v\u1ecb tr\u00ed ph\u00f9 h\u1ee3p.<\/p>\n

Ti\u00eau chu\u1ea9n IEC 60269-6 quy \u0111\u1ecbnh v\u1ec1 c\u00e1c thanh c\u1ea7u ch\u00ec d\u00f9ng \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c chu\u1ed7i v\u00e0 m\u1ea3ng PV. Ph\u1ea1m vi \u00e1p d\u1ee5ng c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y x\u00e1c nh\u1eadn r\u1eb1ng vi\u1ec7c b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng PV c\u00f3 c\u00e1c y\u00eau c\u1ea7u b\u1ed5 sung, nh\u01b0ng kh\u00f4ng kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng m\u1ed9t m\u00e3 \u0111\u1eb7t h\u00e0ng c\u1ee5 th\u1ec3 c\u1ee7a RITOKS c\u00f3 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ho\u1eb7c ch\u1ee9ng nh\u1eadn nh\u1ea5t \u0111\u1ecbnh. Y\u00eau c\u1ea7u cung c\u1ea5p b\u1ea3ng d\u1eef li\u1ec7u k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c c\u1ee7a thanh c\u1ea7u ch\u00ec.<\/p>\n

\"C\u00e1c
X\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u00f3 th\u1ec3 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t c\u1ea7u ch\u00ec cho c\u00e1c chu\u1ed7i v\u00e0 c\u1ee5m.<\/figcaption><\/figure>\n

Ki\u1ec3m tra \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u t\u1ed1i \u0111a t\u1ea1i v\u1ecb tr\u00ed \u0111\u00f3<\/h2>\n

\u0110i\u1ec7n \u00e1p m\u1ea1ch h\u1edf c\u1ee7a chu\u1ed7i PV thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9 v\u00e0 c\u1ea5u h\u00ecnh. Ng\u01b0\u1eddi thi\u1ebft k\u1ebf c\u1ea7n t\u00ednh to\u00e1n \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng t\u1ed1i \u0111a ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ecba \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ecbnh m\u1ee9c DC ch\u00ednh x\u00e1c c\u1ee7a c\u1ea7u ch\u00ec v\u00e0 gi\u00e1 \u0111\u1ee1. Ch\u1ec9 d\u1ef1a v\u00e0o \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh c\u1ee7a m\u00f4-\u0111un ho\u1eb7c \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng c\u1ee7a b\u1ed9 bi\u1ebfn t\u1ea7n l\u00e0 ch\u01b0a \u0111\u1ee7.<\/p>\n

Ki\u1ec3m tra xem to\u00e0n b\u1ed9 c\u1ee5m linh ki\u1ec7n c\u00f3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng hay kh\u00f4ng: d\u00e2y c\u1ea7u ch\u00ec, gi\u00e1 \u0111\u1ee1, \u0111\u1ea7u n\u1ed1i, l\u1edbp c\u00e1ch \u0111i\u1ec7n c\u1ee7a d\u00e2y d\u1eabn v\u00e0 v\u1ecf b\u1ea3o v\u1ec7. M\u1ed9t d\u00e2y c\u1ea7u ch\u00ec c\u00f3 \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u cao kh\u00f4ng th\u1ec3 n\u00e2ng c\u1ea5p cho m\u1ed9t gi\u00e1 \u0111\u1ee1 c\u00f3 \u0111\u1ecbnh m\u1ee9c kh\u00f4ng ph\u00f9 h\u1ee3p. Kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p c\u00e1c linh ki\u1ec7n ch\u1ec9 d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc c\u1ee7a h\u1ed9p c\u1ea7u ch\u00ec.<\/p>\n

H\u00e3y x\u00e1c minh xem th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a s\u1ea3n ph\u1ea9m c\u00f3 \u00e1p d\u1ee5ng cho c\u1ef1c t\u00ednh v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u1eafp \u0111\u1eb7t d\u1ef1 ki\u1ebfn hay kh\u00f4ng. Tham kh\u1ea3o h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 bi\u1ebft ch\u00ednh x\u00e1c k\u1ebft h\u1ee3p gi\u1eefa \u0111\u01b0\u1eddng d\u00e2y n\u1ed1i v\u00e0 gi\u00e1 \u0111\u1ee1. Kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec AC th\u00f4ng d\u1ee5ng c\u00f3 c\u00f9ng k\u00edch th\u01b0\u1edbc \u0111\u1ec3 thay th\u1ebf cho \u0111\u01b0\u1eddng d\u00e2y n\u1ed1i DC \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn cho h\u1ec7 th\u1ed1ng PV n\u1ebfu kh\u00f4ng c\u00f3 b\u1eb1ng ch\u1ee9ng th\u00edch h\u1ee3p.<\/p>\n

Xem x\u00e9t ri\u00eang bi\u1ec7t ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7n t\u1ea1i v\u00e0 ch\u1ebf \u0111\u1ed9 ng\u1eaft<\/h2>\n

C\u1ea7n n\u00eau r\u00f5 d\u00f2ng \u0111i\u1ec7n li\u00ean t\u1ee5c t\u1ed1i \u0111a m\u00e0 c\u1ea7u ch\u00ec c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c trong v\u1ecf b\u1ea3o v\u1ec7 \u0111\u00e3 l\u1eafp \u0111\u1eb7t v\u00e0 d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 d\u1ef1 ki\u1ebfn m\u00e0 n\u00f3 ph\u1ea3i ng\u1eaft. Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea7u ch\u00ec c\u0169ng ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c gi\u1edbi h\u1ea1n c\u1ee7a m\u00f4-\u0111un ho\u1eb7c d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7. C\u00e1c h\u1ea1n ch\u1ebf n\u00e0y c\u00f3 th\u1ec3 m\u00e2u thu\u1eabn v\u1edbi nhau; vi\u1ec7c ch\u1ecdn m\u1ee9c d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c cao h\u01a1n c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c s\u1ef1 c\u1ed1 ng\u1eaft kh\u00f4ng c\u1ea7n thi\u1ebft, nh\u01b0ng \u0111\u1ed3ng th\u1eddi c\u0169ng l\u00e0m gi\u1ea3m m\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7 cho thi\u1ebft b\u1ecb.<\/p>\n

PV sources can supply fault currents with different characteristics from a conventional AC source. Ask for gPV application and interruption evidence relevant to the system. A high breaking-capacity headline does not tell you the fuse’s behavior near lower fault currents or under the exact DC voltage and thermal conditions.<\/p>\n

C\u1ea7n ghi nh\u1eadn nhi\u1ec7t \u0111\u1ed9 b\u00ean trong h\u1ed9p gh\u00e9p v\u00e0 b\u1ea5t k\u1ef3 vi\u1ec7c gi\u1ea3m c\u00f4ng su\u1ea5t n\u00e0o do nh\u00f3m thi\u1ebft b\u1ecb ho\u1eb7c do c\u00e1c thi\u1ebft b\u1ecb l\u00e2n c\u1eadn g\u00e2y ra. Kh\u1ea3 n\u0103ng ch\u1ecbu d\u00f2ng \u0111i\u1ec7n li\u00ean t\u1ee5c c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng ti\u1ebfp x\u00fac c\u1ee7a gi\u00e1 \u0111\u1ee1. Thi\u1ebft k\u1ebf cu\u1ed1i c\u00f9ng n\u00ean tu\u00e2n theo h\u01b0\u1edbng d\u1eabn v\u1ec1 d\u00e2y n\u1ed1i v\u00e0 gi\u00e1 \u0111\u1ee1, thay v\u00ec gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt trong ph\u00f2ng th\u00ed nghi\u1ec7m c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng nguy\u00ean v\u1eb9n cho m\u1ed9t v\u1ecf b\u1ecdc ngo\u00e0i tr\u1eddi c\u00f3 m\u1eadt \u0111\u1ed9 l\u1eafp \u0111\u1eb7t cao.<\/p>\n

Coi d\u00e2y c\u1ea7u ch\u00ec v\u00e0 gi\u00e1 \u0111\u1ee1 nh\u01b0 m\u1ed9t c\u1ee5m l\u1eafp r\u00e1p<\/h2>\n

H\u00e3y \u0111\u1ea3m b\u1ea3o k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd, d\u1ea3i d\u00f2ng \u0111i\u1ec7n, \u0111i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u, c\u00e1c c\u1ef1c n\u1ed1i v\u00e0 y\u00eau c\u1ea7u v\u1ec1 nhi\u1ec7t \u0111\u1ed9 ph\u00f9 h\u1ee3p v\u1edbi lo\u1ea1i c\u1ea7u ch\u00ec v\u00e0 gi\u00e1 \u0111\u1ee1 c\u1ee5 th\u1ec3. M\u1ed9t h\u1ed9p c\u1ea7u ch\u00ec c\u00f3 th\u1ec3 l\u1eafp v\u1eeba v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t s\u1ef1 k\u1ebft h\u1ee3p ch\u01b0a \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t. H\u00e3y y\u00eau c\u1ea7u nh\u00e0 s\u1ea3n xu\u1ea5t x\u00e1c nh\u1eadn s\u1ef1 t\u01b0\u01a1ng th\u00edch c\u1ee7a b\u1ed9 s\u1ea3n ph\u1ea9m n\u00e0y c\u0169ng nh\u01b0 b\u1ea5t k\u1ef3 h\u1ea1n ch\u1ebf n\u00e0o li\u00ean quan \u0111\u1ebfn vi\u1ec7c l\u1eafp \u0111\u1eb7t ho\u1eb7c thay th\u1ebf.<\/p>\n

C\u1ea7n xem x\u00e9t c\u00e1ch nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec s\u1ebd x\u00e1c \u0111\u1ecbnh v\u00e0 thay th\u1ebf c\u1ea7u ch\u00ec b\u1ecb ch\u00e1y. Ghi nh\u00e3n v\u1ecb tr\u00ed c\u00e1c d\u00e2y, l\u01b0u gi\u1eef m\u00e3 \u0111\u1eb7t h\u00e0ng d\u1ef1 ph\u00f2ng trong h\u1ed3 s\u01a1 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 cung c\u1ea5p quy tr\u00ecnh c\u00e1ch ly an to\u00e0n. Gi\u00e1 \u0111\u1ee1 c\u1ea7u ch\u00ec kh\u00f4ng t\u1ef1 \u0111\u1ed9ng \u0111\u00f3ng vai tr\u00f2 l\u00e0 thi\u1ebft b\u1ecb ng\u1eaft m\u1ea1ch t\u1ea3i; c\u1ea7n ki\u1ec3m tra ri\u00eang bi\u1ec7t b\u1ea5t k\u1ef3 ch\u1ee9c n\u0103ng chuy\u1ec3n m\u1ea1ch n\u00e0o.<\/p>\n

Trong qu\u00e1 tr\u00ecnh b\u1ea3o tr\u00ec, c\u1ea7n ki\u1ec3m tra t\u00ecnh tr\u1ea1ng ti\u1ebfp x\u00fac c\u1ee7a gi\u00e1 \u0111\u1ee1, m\u00f4-men xo\u1eafn c\u1ee7a d\u00e2y d\u1eabn v\u00e0 \u0111\u1ed9 k\u00edn c\u1ee7a v\u1ecf b\u1ea3o v\u1ec7. H\u01b0 h\u1ecfng do nhi\u1ec7t ho\u1eb7c \u0103n m\u00f2n c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac. Vi\u1ec7c ch\u1ec9 thay th\u1ebf d\u00e2y c\u1ea7u ch\u00ec m\u00e0 kh\u00f4ng kh\u1eafc ph\u1ee5c gi\u00e1 \u0111\u1ee1 b\u1ecb h\u01b0 h\u1ecfng c\u00f3 th\u1ec3 khi\u1ebfn c\u1ee5m thi\u1ebft b\u1ecb n\u00e0y ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u0111\u00e1ng tin c\u1eady.<\/p>\n

Bi\u00ean b\u1ea3n ghi ch\u00e9p v\u1ec1 vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ea7u ch\u00ec PV<\/h2>\n
\u0110\u00e1nh gi\u00e1 s\u1ea3n ph\u1ea9m<\/th>B\u1eb1ng ch\u1ee9ng d\u1ef1 \u00e1n<\/th>B\u1eb1ng ch\u1ee9ng t\u1eeb nh\u00e0 cung c\u1ea5p<\/th><\/tr><\/thead>
V\u1ecb tr\u00ed<\/td>D\u00e3y k\u00fd t\u1ef1 ho\u1eb7c m\u1ea3ng tr\u00ean m\u1ed9t d\u00f2ng<\/td>Ph\u1ea1m vi \u00e1p d\u1ee5ng c\u1ee7a li\u00ean k\u1ebft\/ng\u01b0\u1eddi n\u1eafm gi\u1eef<\/td><\/tr>
\u0110i\u1ec7n \u00e1p<\/td>Gi\u00e1 tr\u1ecb DC t\u1ed1i \u0111a trong \u0111i\u1ec1u ki\u1ec7n l\u1ea1nh<\/td>C\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ecbnh m\u1ee9c DC ch\u00ednh x\u00e1c<\/td><\/tr>
Hi\u1ec7n t\u1ea1i<\/td>\u0110\u01b0\u1eddng d\u1eabn li\u00ean t\u1ee5c v\u00e0 \u0111\u01b0\u1eddng d\u1eabn ng\u01b0\u1ee3c chi\u1ec1u<\/td>D\u1eef li\u1ec7u d\u00f2ng \u0111i\u1ec7n v\u00e0 th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n gPV hi\u1ec7n t\u1ea1i<\/td><\/tr>
L\u1ed7i<\/td>D\u00f2ng \u0111i\u1ec7n d\u1ef1 ki\u1ebfn t\u1ea1i v\u1ecb tr\u00ed<\/td>D\u1eef li\u1ec7u gi\u00e1n \u0111o\u1ea1n \u1edf \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng<\/td><\/tr>
L\u1eafp r\u00e1p<\/td>V\u1ecf b\u1ecdc v\u00e0 b\u1ed1 tr\u00ed d\u00e2y d\u1eabn<\/td>T\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a gi\u00e1 \u0111\u1ee1 v\u00e0 h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t<\/td><\/tr><\/tbody><\/table><\/figure>\n

\u0110\u1ea3m b\u1ea3o m\u1ed7i b\u01b0\u1edbc ki\u1ec3m tra ph\u1ea3i \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi m\u1ed9t m\u00e3 \u0111\u01a1n h\u00e0ng c\u1ee5 th\u1ec3. N\u1ebfu nh\u00e0 cung c\u1ea5p b\u1ed9 bi\u1ebfn t\u1ea7n ho\u1eb7c m\u00f4-\u0111un quy \u0111\u1ecbnh m\u1ed9t \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7, h\u00e3y so s\u00e1nh \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3 v\u1edbi \u0111\u1ec1 xu\u1ea5t v\u1ec1 c\u1ea7u ch\u00ec v\u00e0 l\u01b0u gi\u1eef t\u00e0i li\u1ec7u g\u1ed1c. M\u1ed9t \u0111i\u1ec1u ki\u1ec7n ch\u01b0a \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft n\u00ean \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i trong danh s\u00e1ch c\u00e1c v\u1ea5n \u0111\u1ec1 c\u1ea7n xem x\u00e9t trong qu\u00e1 tr\u00ecnh r\u00e0 so\u00e1t thi\u1ebft k\u1ebf, thay v\u00ec \u0111\u01b0\u1ee3c chuy\u1ec3n th\u00e0nh m\u1ed9t m\u1ee9c \u0111\u1ecbnh m\u1ee9c d\u1ef1a tr\u00ean ph\u1ecfng \u0111o\u00e1n.<\/p>\n

\"Ma
Ph\u1ea3i \u0111\u1ea3m b\u1ea3o s\u1ef1 ph\u00f9 h\u1ee3p gi\u1eefa d\u00e2y c\u1ea7u ch\u00ec, gi\u00e1 \u0111\u1ee1 v\u00e0 c\u00e1c b\u1eb1ng ch\u1ee9ng v\u1ec1 m\u1ea1ch \u0111i\u1ec7n t\u1ea1i t\u1eebng v\u1ecb tr\u00ed PV.<\/figcaption><\/figure>\n

C\u00e1c ph\u01b0\u01a1ng \u00e1n c\u1ee7a RITOKS \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o qu\u00e1 tr\u00ecnh \u0111\u00e1nh gi\u00e1 nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n

C\u00e1i Danh m\u1ee5c c\u00e1c lo\u1ea1i c\u1ea7u ch\u00ec DC<\/a> l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u. C\u00e1i D\u00f2ng s\u1ea3n ph\u1ea9m 10\u00d738 gPV link<\/a>, D\u00f2ng s\u1ea3n ph\u1ea9m \u1ed1ng n\u1ed1i gPV 10\u00d765<\/a> v\u00e0 D\u00f2ng c\u1ea7u ch\u00ec n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi MGPV<\/a> \u0111\u1ea1i di\u1ec7n cho c\u00e1c t\u00f9y ch\u1ecdn th\u01b0\u01a1ng m\u1ea1i, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e1c c\u1ee5m li\u00ean k\u1ebft\/gi\u00e1 \u0111\u1ee1 c\u00f3 th\u1ec3 ho\u00e1n \u0111\u1ed5i cho nhau m\u1ed9t c\u00e1ch t\u1ef1 \u0111\u1ed9ng.<\/p>\n

Vui l\u00f2ng g\u1eedi s\u01a1 \u0111\u1ed3 m\u1ed9t d\u00e2y PV, d\u1eef li\u1ec7u m\u00f4-\u0111un, \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a c\u1ee7a h\u1ec7 th\u1ed1ng, ph\u00e2n t\u00edch s\u1ef1 c\u1ed1 v\u00e0 d\u00f2ng \u0111i\u1ec7n, b\u1ea3n v\u1ebd b\u1ed1 tr\u00ed gi\u00e1 \u0111\u1ee1 v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng qua Li\u00ean h\u1ec7 v\u1edbi RITOKS<\/a>. Y\u00eau c\u1ea7u cung c\u1ea5p d\u1eef li\u1ec7u ch\u00ednh x\u00e1c v\u00e0 x\u00e1c nh\u1eadn t\u00ednh t\u01b0\u01a1ng th\u00edch. Nh\u1edd \u0111\u00f3, nh\u00e0 cung c\u1ea5p c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 v\u1ec1 m\u1ed9t chu\u1ed7i k\u00fd t\u1ef1 ho\u1eb7c v\u1ecb tr\u00ed trong m\u1ea3ng, thay v\u00ec ch\u1ec9 l\u00e0 y\u00eau c\u1ea7u chung chung v\u1ec1 \u201cc\u1ea7u ch\u00ec n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi\u201d.<\/p>\n

Review changes over the project’s life<\/h2>\n

C\u1ea7n r\u00e0 so\u00e1t h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 PV khi m\u1edf r\u1ed9ng d\u00e3y pin, s\u1eafp x\u1ebfp l\u1ea1i c\u00e1c chu\u1ed7i ho\u1eb7c k\u1ebft n\u1ed1i v\u1edbi \u0111\u1ea7u v\u00e0o c\u1ee7a b\u1ed9 bi\u1ebfn t\u1ea7n kh\u00e1c. Vi\u1ec7c th\u00eam m\u1ed9t chu\u1ed7i song song s\u1ebd thay \u0111\u1ed5i c\u00e1c ngu\u1ed3n c\u00f3 s\u1eb5n \u0111\u1ec3 c\u1ea5p ng\u01b0\u1ee3c \u0111i\u1ec7n trong tr\u01b0\u1eddng h\u1ee3p s\u1ef1 c\u1ed1. M\u1ed9t m\u00f4-\u0111un thay th\u1ebf c\u00f3 \u0111\u1eb7c t\u00ednh d\u00f2ng \u0111i\u1ec7n ho\u1eb7c \u0111i\u1ec7n \u00e1p kh\u00e1c bi\u1ec7t c\u00f3 th\u1ec3 l\u00e0m cho t\u00ednh to\u00e1n tr\u1edf n\u00ean kh\u00f4ng ch\u00ednh x\u00e1c, ngay c\u1ea3 khi n\u00f3 v\u1eeba kh\u00edt v\u1edbi c\u00f9ng m\u1ed9t khung. H\u00e3y ghi l\u1ea1i c\u00e1c gi\u1ea3 \u0111\u1ecbnh \u0111\u00e3 d\u1eabn \u0111\u1ebfn l\u1ecbch tr\u00ecnh c\u1ea7u ch\u00ec ban \u0111\u1ea7u \u0111\u1ec3 c\u00e1c \u0111\u1ed9i b\u1ea3o tr\u00ec bi\u1ebft nh\u1eefng thay \u0111\u1ed5i n\u00e0o c\u1ea7n ph\u1ea3i thi\u1ebft k\u1ebf l\u1ea1i.<\/p>\n

Y\u00eau c\u1ea7u ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t d\u00e1n nh\u00e3n cho t\u1eebng \u0111\u1ea7u v\u00e0o c\u1ee7a b\u1ed9 gh\u00e9p v\u00e0 l\u01b0u gi\u1eef b\u1ea3n v\u1ebd s\u01a1 \u0111\u1ed3 m\u1ed9t d\u00e2y theo hi\u1ec7n tr\u1ea1ng. B\u1ea3n v\u1ebd n\u00e0y c\u1ea7n ch\u1ec9 r\u00f5 m\u00e3 th\u1ee9 t\u1ef1 li\u00ean k\u1ebft, m\u00e3 th\u1ee9 t\u1ef1 gi\u00e1 \u0111\u1ee1, c\u00e1ch b\u1ed1 tr\u00ed c\u1ef1c t\u00ednh v\u00e0 m\u1ea1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u1ea5p ngu\u1ed3n. N\u1ebfu c\u00f4ng tr\u00ecnh c\u00f3 nhi\u1ec1u d\u00e3y pin m\u1eb7t tr\u1eddi \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t theo t\u1eebng giai \u0111o\u1ea1n, h\u00e3y ph\u00e2n bi\u1ec7t ch\u00fang b\u1eb1ng s\u1ed1 phi\u00ean b\u1ea3n; vi\u1ec7c d\u00e1n nh\u00e3n chung chung \u201cc\u1ea7u ch\u00ec PV\u201d tr\u00ean k\u1ec7 ph\u1ee5 t\u00f9ng l\u00e0 kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c thay th\u1ebf b\u1eb1ng m\u1ed9t c\u1ea7u ch\u00ec c\u00f9ng k\u00edch th\u01b0\u1edbc nh\u01b0ng c\u00f3 \u0111\u1ecbnh m\u1ee9c sai.<\/p>\n

Sau khi c\u1ea7u ch\u00ec ho\u1ea1t \u0111\u1ed9ng, c\u1ea7n x\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n tr\u01b0\u1edbc khi l\u1eafp l\u00f5i c\u1ea7u ch\u00ec m\u1edbi. Ki\u1ec3m tra l\u1edbp c\u00e1ch \u0111i\u1ec7n c\u1ee7a d\u00e2y d\u1eabn, c\u00e1c \u0111\u1ea7u n\u1ed1i, c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u1ee7a gi\u00e1 \u0111\u1ee1 v\u00e0 chu\u1ed7i PV b\u1ecb \u1ea3nh h\u01b0\u1edfng. Vi\u1ec7c c\u1ea7u ch\u00ec ho\u1ea1t \u0111\u1ed9ng c\u00f3 th\u1ec3 cho th\u1ea5y s\u1ef1 c\u1ed1 \u0111ang di\u1ec5n ra ho\u1eb7c gi\u00e1 \u0111\u1ee1 b\u1ecb h\u01b0 h\u1ecfng. Nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec ph\u1ea3i tu\u00e2n th\u1ee7 quy tr\u00ecnh c\u00e1ch ly v\u00e0 ki\u1ec3m tra \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng, v\u00ec chu\u1ed7i PV v\u1eabn c\u00f3 th\u1ec3 c\u00f2n mang \u0111i\u1ec7n v\u00e0o ban ng\u00e0y ngay c\u1ea3 khi b\u1ed9 bi\u1ebfn t\u1ea7n \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1eaft.<\/p>\n

C\u00e1c c\u00e2u h\u1ecfi v\u1ec1 mua s\u1eafm gi\u00fap qu\u00e1 tr\u00ecnh r\u00e0 so\u00e1t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c<\/h2>\n

When comparing offers, request the link’s full time-current information, DC interruption evidence and applicable standard declaration for the exact order code. Ask for the mating holder’s installation sheet and any permitted accessories. If a supplier proposes a different body size, request a revised panel-layout and thermal check rather than treating the substitution as a simple price alternative.<\/p>\n

Y\u00eau c\u1ea7u k\u1ef9 s\u01b0 \u0111\u00e1nh d\u1ea5u t\u1eebng ph\u01b0\u01a1ng \u00e1n thay th\u1ebf \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ea1ch: v\u1ecb tr\u00ed, \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a, d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c, s\u1ef1 c\u1ed1 d\u1ef1 ki\u1ebfn, gi\u1edbi h\u1ea1n m\u00f4i tr\u01b0\u1eddng v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7. M\u1ed9t c\u1ea7u ch\u00ec c\u00f3 \u201c\u0111\u1ecbnh m\u1ee9c cao h\u01a1n\u201d kh\u00f4ng t\u1ef1 \u0111\u1ed9ng c\u00f3 ngh\u0129a l\u00e0 ph\u00f9 h\u1ee3p h\u01a1n. Kh\u1ea3 n\u0103ng ch\u1ecbu \u0111i\u1ec7n \u00e1p cao h\u01a1n kh\u00f4ng \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng d\u00f2ng \u0111i\u1ec7n, v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu d\u00f2ng \u0111i\u1ec7n cao h\u01a1n c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 c\u1ee7a c\u00e1c m\u00f4-\u0111un ho\u1eb7c d\u00e2y d\u1eabn.<\/p>\n

For an outdoor combiner, include the enclosure’s exposure and service environment in the request. Water ingress, ultraviolet exposure and temperature swings can affect the assembly and maintenance plan even though the fuse link itself is selected electrically. The enclosure and holder evidence should correspond to the mounted installation, not just to a bench-tested component.<\/p>\n

C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n

C\u00f3 ph\u1ea3i m\u1ed7i chu\u1ed7i PV \u0111\u1ec1u c\u1ea7n m\u1ed9t c\u1ea7u ch\u00ec kh\u00f4ng?<\/h3>\n

Kh\u00f4ng c\u00f3 c\u00e2u tr\u1ea3 l\u1eddi chung n\u00e0o c\u00f3 th\u1ec3 suy ra t\u1eeb thu\u1eadt ng\u1eef \u201cPV\u201d. Nhu c\u1ea7u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o hi\u1ec7n t\u01b0\u1ee3ng h\u1ed3i l\u01b0u t\u1eeb c\u00e1c ngu\u1ed3n song song, gi\u1edbi h\u1ea1n c\u1ee7a c\u00e1c m\u00f4-\u0111un v\u00e0 c\u00e1c quy \u0111\u1ecbnh \u00e1p d\u1ee5ng cho h\u1ec7 th\u1ed1ng. H\u00e3y xem x\u00e9t ki\u1ebfn tr\u00fac th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

Is a gPV link’s voltage rating enough to approve the assembly?<\/h3>\n

No. Check holder, wiring, enclosure and exact link compatibility at the location’s maximum DC voltage and current conditions.<\/p>\n

C\u00f3 th\u1ec3 d\u00f9ng c\u1ea7u ch\u00ec \u0111i\u1ec1u h\u00f2a c\u00f9ng k\u00edch c\u1ee1 \u0111\u1ec3 thay th\u1ebf cho c\u1ea7u ch\u00ec n\u1ed1i PV kh\u00f4ng?<\/h3>\n

\u0110\u1eebng v\u1ed9i k\u1ebft lu\u1eadn nh\u01b0 v\u1eady. Ph\u1ea3i x\u00e1c nh\u1eadn b\u1eb1ng ch\u1ee9ng v\u1ec1 s\u1ef1 gi\u00e1n \u0111o\u1ea1n d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) c\u1ee7a h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n (PV) v\u00e0 \u0111i\u1ec1u ki\u1ec7n \u1ee9ng d\u1ee5ng \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 \u0111\u00f3.<\/p>\n

T\u00f3m l\u1ea1i<\/h2>\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea7u ch\u00ec cho chu\u1ed7i PV v\u00e0 c\u1ee5m PV b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c ph\u00e2n t\u00edch c\u1ea5u tr\u00fac m\u1ea1ng ngu\u1ed3n v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ph\u1ea3n h\u1ed3i d\u00f2ng \u0111i\u1ec7n. Sau \u0111\u00f3, c\u1ea7n ki\u1ec3m tra c\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 \u0111i\u1ec7n \u00e1p, d\u00f2ng \u0111i\u1ec7n, kh\u1ea3 n\u0103ng ng\u1eaft m\u1ea1ch v\u00e0 t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi gi\u00e1 \u0111\u1ee1 k\u1ebft n\u1ed1i t\u1ea1i t\u1eebng v\u1ecb tr\u00ed c\u1ee5 th\u1ec3. T\u00ean d\u00f2ng s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 h\u1eefu \u00edch trong vi\u1ec7c l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p, nh\u01b0ng ch\u00ednh k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u h\u1ec7 th\u1ed1ng m\u1edbi quy\u1ebft \u0111\u1ecbnh ki\u1ebfn tr\u00fac b\u1ea3o v\u1ec7.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n