{"id":1798,"date":"2026-09-27T06:40:35","date_gmt":"2026-09-27T06:40:35","guid":{"rendered":"https:\/\/ritoks.com\/?p=1798"},"modified":"2026-10-04T06:58:10","modified_gmt":"2026-10-04T06:58:10","slug":"dc-mcbs-battery-circuits-selection-inputs","status":"publish","type":"post","link":"https:\/\/ritoks.com\/vi\/dc-mcbs-battery-circuits-selection-inputs\/","title":{"rendered":"C\u00f4ng t\u1eafc ng\u1eaft m\u1ea1ch t\u1ef1 \u0111\u1ed9ng (MCB) lo\u1ea1i DC trong m\u1ea1ch \u1eafc-quy: C\u00e1c y\u1ebfu t\u1ed1 l\u1ef1a ch\u1ecdn v\u00e0 gi\u1edbi h\u1ea1n b\u1eb1ng ch\u1ee9ng"},"content":{"rendered":"

Kh\u00f4ng th\u1ec3 ch\u1ec9 d\u1ef1a v\u00e0o \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n \u0111\u1ec3 l\u1ef1a ch\u1ecdn m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch thu nh\u1ecf lo\u1ea1i DC trong m\u1ea1ch \u1eafc-quy. Nh\u00e0 thi\u1ebft k\u1ebf c\u1ea7n bi\u1ebft d\u1ea3i \u0111i\u1ec7n \u00e1p th\u1ef1c t\u1ebf c\u1ee7a \u1eafc-quy, k\u1ebft qu\u1ea3 ph\u00e2n t\u00edch d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1, h\u01b0\u1edbng ngu\u1ed3n, c\u00e1ch b\u1ed1 tr\u00ed d\u00e2y d\u1eabn v\u00e0 ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 d\u1ef1 ki\u1ebfn. M\u1ed9t nh\u00e3n ghi \u201cph\u00f9 h\u1ee3p v\u1edbi \u1eafc-quy\u201d kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng m\u1ed9t c\u1ea5u h\u00ecnh c\u1ef1c c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 ng\u1eaft d\u00f2ng s\u1ef1 c\u1ed1 t\u1ea1i v\u1ecb tr\u00ed n\u00e0y.<\/p>\n\n\n

H\u01b0\u1edbng d\u1eabn n\u00e0y l\u00e0 danh s\u00e1ch ki\u1ec3m tra c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ea7u v\u00e0o v\u00e0 b\u1eb1ng ch\u1ee9ng d\u00e0nh cho c\u00e1c k\u1ef9 s\u01b0 v\u00e0 ng\u01b0\u1eddi mua. T\u00e0i li\u1ec7u n\u00e0y kh\u00f4ng cung c\u1ea5p c\u00e1c th\u00f4ng s\u1ed1 c\u00e0i \u0111\u1eb7t cho thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 c\u0169ng nh\u01b0 kh\u00f4ng th\u1ec3 thay th\u1ebf cho nghi\u00ean c\u1ee9u b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng. Trong su\u1ed1t qu\u00e1 tr\u00ecnh r\u00e0 so\u00e1t, h\u00e3y \u0111\u1eb7t s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111\u01a1n v\u00e0 b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c xem x\u00e9t c\u1ea1nh nhau.<\/p>\n\n

X\u00e1c \u0111\u1ecbnh m\u1ea1ch pin tr\u01b0\u1edbc khi \u0111\u1eb7t t\u00ean cho c\u1ea7u dao<\/h2>\n\n

H\u00e3y x\u00e1c \u0111\u1ecbnh xem thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t t\u1ea1i chu\u1ed7i \u1eafc-quy, \u0111i\u1ec3m t\u1ed5ng h\u1ee3p c\u00f4ng su\u1ea5t \u1eafc-quy, nh\u00e1nh ph\u00e2n ph\u1ed1i d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u, \u0111i\u1ec3m k\u1ebft n\u1ed1i b\u1ed9 chuy\u1ec3n \u0111\u1ed5i hay m\u1ea1ch ph\u1ee5. C\u00e1c v\u1ecb tr\u00ed n\u00e0y c\u00f3 th\u1ec3 c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n b\u00ecnh th\u01b0\u1eddng kh\u00e1c nhau v\u00e0 c\u00e1c ngu\u1ed3n d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 ti\u1ec1m \u1ea9n kh\u00e1c nhau. M\u1ed9t nh\u00e1nh c\u00f3 \u1eafc-quy \u1edf m\u1ed9t b\u00ean v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f4ng su\u1ea5t \u1edf b\u00ean kia kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c \u0111\u01a1n gi\u1ea3n h\u00f3a th\u00e0nh s\u01a1 \u0111\u1ed3 ngu\u1ed3n-t\u1ea3i chung chung.<\/p>\n\n\n

Ghi l\u1ea1i c\u00e1c tr\u1ea1ng th\u00e1i v\u1eadn h\u00e0nh: s\u1ea1c, x\u1ea3, c\u00e1ch ly b\u1ea3o d\u01b0\u1ee1ng, c\u00e1c chu\u1ed7i song song v\u00e0 b\u1ea5t k\u1ef3 \u0111\u01b0\u1eddng d\u1eabn bypass ho\u1eb7c ngu\u1ed3n c\u1ea5p thay th\u1ebf n\u00e0o. Ghi ch\u00fa t\u1eebng tr\u1ea1ng th\u00e1i tr\u00ean b\u1ea3n v\u1ebd. B\u00e0i t\u1eadp n\u00e0y gi\u00fap x\u00e1c \u0111\u1ecbnh xem d\u00f2ng \u0111i\u1ec7n c\u00f3 th\u1ec3 ch\u1ea1y theo c\u1ea3 hai h\u01b0\u1edbng hay kh\u00f4ng v\u00e0 li\u1ec7u c\u1ea7u dao \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh cho m\u1ed9t c\u1ef1c ngu\u1ed3n c\u1ee5 th\u1ec3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t theo \u0111\u1ec1 xu\u1ea5t hay kh\u00f4ng. Kh\u00f4ng n\u00ean gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng d\u00f2ng \u0111i\u1ec7n s\u1ea1c v\u00e0 d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch \u0111i theo c\u00f9ng m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn.<\/p>\n\n\n

M\u00f4 t\u1ea3 ch\u00ednh x\u00e1c m\u1ee5c \u0111\u00edch c\u1ee7a thi\u1ebft b\u1ecb. C\u00e1c ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng, chuy\u1ec3n m\u1ea1ch, c\u00e1ch ly v\u00e0 ng\u1eaft k\u1ebft n\u1ed1i kh\u1ea9n c\u1ea5p kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng y\u00eau c\u1ea7u c\u00f3 th\u1ec3 thay th\u1ebf cho nhau. N\u1ebfu y\u00eau c\u1ea7u nhi\u1ec1u h\u01a1n m\u1ed9t ch\u1ee9c n\u0103ng, b\u1ea3n m\u00f4 t\u1ea3 k\u1ef9 thu\u1eadt c\u1ee7a d\u1ef1 \u00e1n c\u1ea7n n\u00eau r\u00f5 t\u1eebng ch\u1ee9c n\u0103ng v\u00e0 b\u1eb1ng ch\u1ee9ng c\u1ea7n thi\u1ebft cho t\u1eebng ch\u1ee9c n\u0103ng \u0111\u00f3. C\u00e1c Danh m\u1ee5c c\u1ea7u dao thu nh\u1ecf DC<\/a> x\u00e1c \u0111\u1ecbnh m\u1ed9t nh\u00f3m th\u01b0\u01a1ng m\u1ea1i; \u0111i\u1ec1u n\u00e0y kh\u00f4ng quy\u1ebft \u0111\u1ecbnh ph\u01b0\u01a1ng \u00e1n b\u1ea3o h\u1ed9.<\/p>\n\n

H\u00e3y thu th\u1eadp \u0111\u01b0\u1eddng bao \u0111i\u1ec7n \u00e1p, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh<\/h2>\n\n

\u0110i\u1ec7n \u00e1p t\u1ea1i c\u1ef1c \u1eafc-quy thay \u0111\u1ed5i t\u00f9y theo tr\u1ea1ng th\u00e1i s\u1ea1c, ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng v\u00e0 nhi\u1ec7t \u0111\u1ed9. K\u1ef9 s\u01b0 h\u1ec7 th\u1ed1ng c\u1ea7n x\u00e1c \u0111\u1ecbnh c\u00e1c gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a v\u00e0 t\u1ed1i thi\u1ec3u t\u01b0\u01a1ng \u1ee9ng v\u1edbi v\u1ecb tr\u00ed c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch n\u00e0y, \u0111\u1ed3ng th\u1eddi x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec1u ki\u1ec7n qu\u00e1 \u0111\u1ed9 ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n s\u1ea1c m\u00e0 thi\u1ebft b\u1ecb d\u1ef1 ki\u1ebfn ph\u1ea3i ch\u1ecbu \u0111\u01b0\u1ee3c. C\u1ea7n ki\u1ec3m tra \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) c\u1ee7a thi\u1ebft b\u1ecb so v\u1edbi \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a c\u1ee7a m\u1ea1ch t\u01b0\u01a1ng \u1ee9ng, d\u1ef1a tr\u00ean c\u1ea5u h\u00ecnh c\u1ef1c v\u00e0 c\u00e1ch n\u1ed1i d\u00e2y ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n\n\n

A catalogue headline may list several voltages for different numbers of poles or connection arrangements. Do not carry the highest figure across to a different wiring arrangement. Ask for the manufacturer’s diagram showing the proposed series-pole connection, if applicable, and match that diagram to the panel drawing. An AC voltage rating is not evidence of DC interruption performance.<\/p>\n\n\n

C\u0169ng c\u1ea7n ghi ch\u00e9p s\u01a1 \u0111\u1ed3 n\u1ed1i \u0111\u1ea5t v\u00e0 s\u01a1 \u0111\u1ed3 d\u00e2y d\u1eabn c\u1ee7a h\u1ec7 th\u1ed1ng pin. Ng\u01b0\u1eddi thi\u1ebft k\u1ebf ph\u1ea3i bi\u1ebft nh\u1eefng d\u00e2y d\u1eabn n\u00e0o \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 v\u00e0 ng\u1eaft k\u1ebft n\u1ed1i, nh\u1eefng ph\u1ea7n n\u00e0o v\u1eabn c\u00f2n mang \u0111i\u1ec7n sau khi v\u1eadn h\u00e0nh, v\u00e0 li\u1ec7u t\u00ecnh hu\u1ed1ng s\u1ef1 c\u1ed1 ch\u1ea1m \u0111\u1ea5t c\u00f3 l\u00e0m thay \u0111\u1ed5i \u0111\u01b0\u1eddng \u0111i c\u1ee7a d\u00f2ng \u0111i\u1ec7n hay kh\u00f4ng. \u0110\u00e2y l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn h\u1ec7 th\u1ed1ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i nh\u1eefng chi ti\u1ebft m\u00e0 nh\u00e0 cung c\u1ea5p c\u1ea7u dao c\u00f3 th\u1ec3 suy ra t\u1eeb gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh.<\/p>\n\n

\"B\u1ea3n
C\u00e1c th\u00f4ng s\u1ed1 v\u1ec1 m\u1ea1ch pin c\u1ea7n x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh ki\u1ec3m tra MCB d\u00f2ng m\u1ed9t chi\u1ec1u.<\/figcaption><\/figure>\n

X\u00e1c \u0111\u1ecbnh d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 d\u1ef1 ki\u1ebfn t\u1ea1i v\u1ecb tr\u00ed th\u1ef1c t\u1ebf<\/h2>\n\n

Cung c\u1ea5p gi\u00e1 tr\u1ecb d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn t\u1ea1i c\u00e1c c\u1ef1c c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch cho c\u00e1c tr\u1ea1ng th\u00e1i v\u1eadn h\u00e0nh t\u01b0\u01a1ng \u1ee9ng. Nghi\u00ean c\u1ee9u c\u1ea7n t\u00ednh \u0111\u1ebfn c\u1ee5m \u1eafc-quy, h\u1ec7 th\u1ed1ng k\u1ebft n\u1ed1i, c\u00e1c \u0111\u01b0\u1eddng d\u1eabn song song, b\u1ed9 bi\u1ebfn t\u1ea7n v\u00e0 c\u00e1c ngu\u1ed3n kh\u00e1c c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n g\u00e2y ra s\u1ef1 c\u1ed1. Kh\u00f4ng \u0111\u01b0\u1ee3c thay th\u1ebf k\u1ebft qu\u1ea3 s\u1ef1 c\u1ed1 c\u1ee5 th\u1ec3 t\u1ea1i t\u1eebng v\u1ecb tr\u00ed b\u1eb1ng s\u1ed1 li\u1ec7u trong b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a t\u1ebf b\u00e0o \u1eafc-quy, th\u00f4ng s\u1ed1 \u0111\u1ecbnh m\u1ee9c c\u1ee7a b\u1ed9 s\u1ea1c ho\u1eb7c dung l\u01b0\u1ee3ng \u1eafc-quy chung chung.<\/p>\n\n\n

So s\u00e1nh kh\u1ea3 n\u0103ng ng\u1eaft \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n v\u1edbi d\u1eef li\u1ec7u ng\u1eaft d\u00f2ng DC ch\u00ednh x\u00e1c c\u1ee7a m\u1eabu s\u1ea3n ph\u1ea9m \u0111\u00f3 t\u1ea1i m\u1ee9c \u0111i\u1ec7n \u00e1p v\u00e0 c\u00e1ch b\u1ed1 tr\u00ed c\u1ef1c t\u01b0\u01a1ng \u1ee9ng. L\u00e0m r\u00f5 \u00fd ngh\u0129a m\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t mu\u1ed1n truy\u1ec1n t\u1ea3i qua k\u00fd hi\u1ec7u ch\u1ec9 kh\u1ea3 n\u0103ng ng\u1eaft c\u0169ng nh\u01b0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n \u1ee9ng d\u1ee5ng li\u00ean quan. M\u1ed9t s\u1ea3n ph\u1ea9m c\u00f3 d\u00f2ng \u0111i\u1ec7n li\u00ean t\u1ee5c \u0111\u1ee7 l\u1edbn v\u1eabn c\u00f3 th\u1ec3 kh\u00f4ng ph\u00f9 h\u1ee3p n\u1ebfu kh\u1ea3 n\u0103ng ng\u1eaft \u0111\u01b0\u1ee3c ghi trong t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt c\u1ee7a n\u00f3 kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c d\u00f2ng s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 x\u1ea3y ra.<\/p>\n\n\n

If the study is incomplete, mark the breaker choice provisional rather than backfilling a plausible fault value. This is especially important where battery strings are paralleled or the converter can contribute to a fault. Procurement can request a candidate range, but approval belongs after the electrical study and manufacturer’s evidence agree.<\/p>\n\n

T\u00e1ch d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng kh\u1ecfi s\u1ef1 ph\u1ed1i h\u1ee3p b\u1ea3o v\u1ec7<\/h2>\n\n

List continuous current, expected charge and discharge peaks, startup behavior and the duration of any normal transient. Then identify the conductors and equipment the breaker is intended to protect. The nominal breaker current must be evaluated with the manufacturer’s derating and ambient assumptions; it should not be chosen simply as the next catalogue value above a single load figure.<\/p>\n\n\n

K\u1ef9 s\u01b0 b\u1ea3o v\u1ec7 c\u1ea7n r\u00e0 so\u00e1t m\u1ed1i quan h\u1ec7 gi\u1eefa th\u1eddi gian v\u00e0 d\u00f2ng \u0111i\u1ec7n \u0111\u1ed1i v\u1edbi c\u00e1c d\u00e2y d\u1eabn, c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 \u1edf ph\u00eda th\u01b0\u1ee3ng l\u01b0u v\u00e0 h\u1ea1 l\u01b0u, c\u00e1c ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd pin c\u0169ng nh\u01b0 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n b\u1ed9 bi\u1ebfn t\u1ea7n. Kh\u00f4ng th\u1ec3 suy ra h\u00e0nh vi t\u1eeb t\u00ednh v\u00e0 nhi\u1ec7t c\u1ee7a m\u1ed9t c\u00f4ng t\u1eafc ng\u1eaft d\u1ef1a tr\u00ean chi\u1ec1u r\u1ed9ng v\u1ecf c\u1ee7a n\u00f3. Ngo\u00e0i ra, vi\u1ec7c c\u00f3 h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd pin c\u0169ng kh\u00f4ng lo\u1ea1i b\u1ecf nhu c\u1ea7u ph\u1ea3i ki\u1ec3m tra ch\u1ee9c n\u0103ng ng\u1eaft m\u1ea1ch v\u1eadt l\u00fd \u0111\u01b0\u1ee3c giao cho c\u00f4ng t\u1eafc ng\u1eaft \u0111\u00f3.<\/p>\n\n\n

H\u00e3y x\u00e1c \u0111\u1ecbnh c\u00e1c tr\u1ea1ng th\u00e1i v\u1eadn h\u00e0nh n\u00e0o c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p v\u1edbi nhau v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1ef1 c\u1ed1 n\u00e0o ph\u1ea3i khi\u1ebfn m\u1ed9t thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3 ng\u1eaft m\u1ea1ch. N\u1ebfu t\u00ednh ch\u1ecdn l\u1ecdc trong v\u1eadn h\u00e0nh l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng, h\u00e3y y\u00eau c\u1ea7u c\u00e1c \u0111\u01b0\u1eddng cong c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u li\u00ean quan. Tr\u00e1nh cam k\u1ebft v\u1ec1 t\u00ednh ch\u1ecdn l\u1ecdc d\u1ef1a tr\u00ean hai m\u1ee9c \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n m\u00e0 kh\u00f4ng c\u00f3 b\u1eb1ng ch\u1ee9ng v\u1ec1 m\u1ed1i quan h\u1ec7 th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n t\u01b0\u01a1ng th\u00edch.<\/p>\n\n

Ki\u1ec3m tra c\u1ef1c t\u00ednh, h\u01b0\u1edbng ngu\u1ed3n v\u00e0 quy t\u1eafc k\u1ebft n\u1ed1i c\u00e1c c\u1ef1c<\/h2>\n\n

Kh\u1ea3 n\u0103ng ng\u1eaft d\u00f2ng DC c\u00f3 th\u1ec3 ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf ki\u1ec3m so\u00e1t h\u1ed3 quang b\u00ean trong v\u00e0 c\u00e1ch k\u1ebft n\u1ed1i c\u00e1c c\u1ef1c. H\u00e3y \u0111\u1ecdc k\u1ef9 h\u01b0\u1edbng d\u1eabn v\u1ec1 \u0111\u01b0\u1eddng d\u00e2y\/t\u1ea3i, c\u1ef1c t\u00ednh v\u00e0 c\u1ef1c n\u1ed1i ti\u1ebfp c\u1ee7a thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3. D\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng hai chi\u1ec1u kh\u00f4ng ch\u1ee9ng minh r\u1eb1ng m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch nh\u1ea1y c\u1ea3m v\u1edbi h\u01b0\u1edbng s\u1ebd ng\u1eaft s\u1ef1 c\u1ed1 t\u1eeb c\u1ea3 hai ph\u00eda \u1edf m\u1ecdi \u0111i\u1ec7n \u00e1p \u0111\u00e3 n\u00eau. Ng\u01b0\u1ee3c l\u1ea1i, m\u00f4 t\u1ea3 \u201ckh\u00f4ng ph\u00e2n c\u1ef1c\u201d v\u1eabn y\u00eau c\u1ea7u x\u00e1c nh\u1eadn ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1eabu thi\u1ebft b\u1ecb c\u1ee5 th\u1ec3.<\/p>\n\n\n

Place the manufacturer’s terminal drawing next to the system single-line. Mark all sources that may feed a fault, including connected power electronics if applicable. If any possible fault direction conflicts with a permitted connection, stop the selection and request an alternative or formal engineering review. Field-reversing an unverified connection is not an acceptable shortcut.<\/p>\n\n\n

\u0110\u1ec3 so s\u00e1nh chi ti\u1ebft h\u01a1n v\u1ec1 c\u00e1c tuy\u00ean b\u1ed1 v\u1ec1 h\u01b0\u1edbng \u0111\u1ea7u cu\u1ed1i, h\u00e3y tham kh\u1ea3o h\u01b0\u1edbng d\u1eabn v\u1ec1 c\u1ef1c t\u00ednh \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t tr\u01b0\u1edbc khi l\u1eadp b\u1ea3ng k\u00ea v\u1eadt li\u1ec7u. C\u00e1c trang s\u1ea3n ph\u1ea9m cho m\u1ed9t D\u00f2ng s\u1ea3n ph\u1ea9m MCB m\u1ed9t chi\u1ec1u hai c\u1ef1c<\/a> v\u00e0 m\u1ed9t D\u00f2ng s\u1ea3n ph\u1ea9m MCB d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) c\u00f3 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n cao<\/a> l\u00e0 nh\u1eefng \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u h\u1eefu \u00edch cho m\u1ed9t cu\u1ed9c \u0111i\u1ec1u tra, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 b\u1eb1ng ch\u1ee9ng cho th\u1ea5y gia \u0111\u00ecnh n\u00e0o trong hai gia \u0111\u00ecnh n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi m\u00f4 h\u00ecnh n\u00e0y.<\/p>\n\n

Ki\u1ec3m tra v\u1ecf b\u1ea3o v\u1ec7 v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u1eafp \u0111\u1eb7t<\/h2>\n\n

Ghi l\u1ea1i nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh, nhi\u1ec7t \u0111\u1ed9 d\u1ef1 ki\u1ebfn b\u00ean trong v\u1ecf thi\u1ebft b\u1ecb, h\u01b0\u1edbng l\u1eafp \u0111\u1eb7t, h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3, \u0111\u1ed9 cao (n\u1ebfu c\u00f3) v\u00e0 kh\u00f4ng gian l\u1eafp \u0111\u1eb7t t\u1ea5m panel c\u00f3 s\u1eb5n. Tham kh\u1ea3o h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 bi\u1ebft th\u00f4ng tin v\u1ec1 k\u00edch th\u01b0\u1edbc d\u00e2y d\u1eabn, \u0111\u1ea7u n\u1ed1i, quy tr\u00ecnh si\u1ebft ch\u1eb7t, kho\u1ea3ng c\u00e1ch l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea5t k\u1ef3 gi\u1edbi h\u1ea1n c\u00f4ng su\u1ea5t n\u00e0o khi l\u1eafp \u0111\u1eb7t g\u1ea7n c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c. Hi\u1ec7u su\u1ea5t t\u1ea3n nhi\u1ec7t ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1ch l\u1eafp r\u00e1p th\u1ef1c t\u1ebf; ch\u1ec9 d\u1ef1a v\u00e0o th\u00f4ng s\u1ed1 d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c trong catalogue l\u00e0 ch\u01b0a \u0111\u1ee7 \u0111\u1ec3 bao qu\u00e1t m\u1ecdi c\u00e1ch b\u1ed1 tr\u00ed b\u00ean trong v\u1ecf thi\u1ebft b\u1ecb.<\/p>\n\n\n

Ki\u1ec3m tra xem thi\u1ebft b\u1ecb s\u1ebd \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh b\u1eb1ng tay, t\u1eeb xa hay ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 ph\u1eadn b\u1ea3o v\u1ec7 t\u1ef1 \u0111\u1ed9ng. N\u1ebfu c\u1ea7n c\u00f3 \u0111i\u1ec3m c\u00e1ch ly c\u00f3 th\u1ec3 kh\u00f3a, h\u00e3y x\u00e1c nh\u1eadn xem thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t c\u00f3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t cho ch\u1ee9c n\u0103ng \u0111\u00f3 trong c\u1ea5u h\u00ecnh \u0111\u1ec1 xu\u1ea5t hay kh\u00f4ng. Kh\u00f4ng \u0111\u01b0\u1ee3c coi m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch nh\u1ecf l\u00e0 thi\u1ebft b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i \u1eafc-quy ho\u00e0n to\u00e0n ch\u1ec9 v\u00ec tay c\u1ea7m c\u1ee7a n\u00f3 c\u00f3 v\u1ecb tr\u00ed \u201cT\u1eaeT\u201d.<\/p>\n\n

X\u00e2y d\u1ef1ng b\u1ea3ng so s\u00e1nh d\u1ef1a tr\u00ean b\u1eb1ng ch\u1ee9ng<\/h2>\n
Tr\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh<\/th>D\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o c\u1ee7a d\u1ef1 \u00e1n<\/th>B\u1eb1ng ch\u1ee9ng d\u1ef1a tr\u00ean m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c<\/th><\/tr><\/thead>
\u0110i\u1ec7n \u00e1p m\u1ed9t chi\u1ec1u<\/td>\u0110i\u1ec7n \u00e1p m\u1ea1ch t\u1ed1i \u0111a c\u00f3 li\u00ean quan<\/td>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt t\u1ea1i c\u00e1c c\u1ed9t \u0111i\u1ec7n v\u00e0 h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t<\/td><\/tr>
Nhi\u1ec7m v\u1ee5 x\u1eed l\u00fd s\u1ef1 c\u1ed1<\/td>D\u00f2ng \u0111i\u1ec7n d\u1ef1 ki\u1ebfn t\u1ea1i \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t<\/td>D\u1eef li\u1ec7u v\u00e0 \u0111i\u1ec1u ki\u1ec7n ng\u1eaft d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u<\/td><\/tr>
Hi\u1ec7n t\u1ea1i<\/td>H\u1ed3 s\u01a1 v\u1eadn h\u00e0nh li\u00ean t\u1ee5c v\u00e0 t\u1ea1m th\u1eddi<\/td>H\u01b0\u1edbng d\u1eabn x\u00e1c \u0111\u1ecbnh c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c v\u00e0 c\u00f4ng su\u1ea5t gi\u1ea3m t\u1ea3i<\/td><\/tr>
H\u01b0\u1edbng d\u1eabn<\/td>\u0110\u01b0\u1eddng d\u1eabn s\u1ea1c, x\u1ea3 v\u00e0 \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1<\/td>H\u01b0\u1edbng c\u1ef1c v\u00e0 h\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1c c\u1ef1c n\u1ed1i<\/td><\/tr>
C\u00e0i \u0111\u1eb7t<\/td>V\u1ecf b\u1ecdc v\u00e0 c\u00e1ch b\u1ed1 tr\u00ed d\u00e2y d\u1eabn<\/td>T\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t v\u00e0 k\u1ebft n\u1ed1i \u0111\u1ea7u cu\u1ed1i<\/td><\/tr><\/tbody><\/table><\/figure>\n\n

H\u00e3y \u0111\u1ea3m b\u1ea3o vi\u1ec7c so s\u00e1nh \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n ch\u00ednh x\u00e1c \u1edf c\u1ea5p \u0111\u1ed9 m\u00e3 \u0111\u1eb7t h\u00e0ng. N\u1ebfu nh\u00e0 cung c\u1ea5p g\u1eedi danh m\u1ee5c s\u1ea3n ph\u1ea9m chung thay v\u00ec b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee5 th\u1ec3 cho t\u1eebng m\u1eabu, h\u00e3y li\u1ec7t k\u00ea c\u00e1c tr\u01b0\u1eddng th\u00f4ng tin ch\u01b0a \u0111\u01b0\u1ee3c l\u00e0m r\u00f5. M\u1ed9t m\u1ee5c \u0111\u01b0\u1ee3c ghi ch\u00fa l\u00e0 \u201ckh\u00f4ng r\u00f5\u201d s\u1ebd h\u1eefu \u00edch h\u01a1n m\u1ed9t k\u1ebft qu\u1ea3 \u201c\u0110\u1ea0T\u201d d\u1ef1a tr\u00ean ph\u1ecfng \u0111o\u00e1n, v\u00ec n\u00f3 gi\u00fap b\u1ed9 ph\u1eadn k\u1ef9 thu\u1eadt v\u00e0 mua s\u1eafm bi\u1ebft c\u1ea7n y\u00eau c\u1ea7u th\u00eam th\u00f4ng tin g\u00ec ti\u1ebfp theo.<\/p>\n\n

\"So
H\u00e3y \u0111\u1ed1i chi\u1ebfu t\u1eebng y\u00eau c\u1ea7u v\u1ec1 m\u1ea1ch \u0111i\u1ec7n c\u1ee7a pin v\u1edbi b\u1eb1ng ch\u1ee9ng c\u1ee5 th\u1ec3 c\u1ee7a t\u1eebng m\u1eabu s\u1ea3n ph\u1ea9m.<\/figcaption><\/figure>\n

Nh\u1eefng th\u00f4ng tin c\u1ea7n g\u1eedi trong h\u1ed3 s\u01a1 y\u00eau c\u1ea7u b\u00e1o gi\u00e1 (RFQ)<\/h2>\n\n

Vui l\u00f2ng cung c\u1ea5p th\u00f4ng tin v\u1ec1 v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t, s\u01a1 \u0111\u1ed3 h\u1ec7 th\u1ed1ng m\u1ed9t d\u00f2ng, d\u1ea3i \u0111i\u1ec7n \u00e1p \u1eafc-quy, d\u00f2ng \u0111i\u1ec7n li\u00ean t\u1ee5c v\u00e0 \u0111\u1eb7c t\u00ednh d\u00f2ng \u0111i\u1ec7n tho\u00e1ng qua, d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 d\u1ef1 ki\u1ebfn, h\u01b0\u1edbng d\u00f2ng \u0111i\u1ec7n d\u1ef1 ki\u1ebfn, s\u01a1 \u0111\u1ed3 n\u1ed1i \u0111\u1ea5t, y\u00eau c\u1ea7u v\u1ec1 c\u1ed9t v\u00e0 d\u00e2y d\u1eabn, \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng l\u1eafp \u0111\u1eb7t, c\u0169ng nh\u01b0 ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 ho\u1eb7c c\u00e1ch ly mong mu\u1ed1n. Vui l\u00f2ng \u0111\u00ednh k\u00e8m c\u00e1c t\u00e0i li\u1ec7u \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u: b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt chi ti\u1ebft, d\u1eef li\u1ec7u ng\u1eaft m\u1ea1ch DC, s\u01a1 \u0111\u1ed3 k\u1ebft n\u1ed1i, h\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t v\u00e0 x\u00e1c nh\u1eadn m\u00e3 \u0111\u1eb7t h\u00e0ng.<\/p>\n\n\n

H\u00e3y n\u00eau r\u00f5 nh\u1eefng th\u00f4ng s\u1ed1 \u0111\u1ea7u v\u00e0o n\u00e0o \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn v\u00e0 nh\u1eefng th\u00f4ng s\u1ed1 n\u00e0o v\u1eabn ch\u1ec9 mang t\u00ednh t\u1ea1m th\u1eddi. S\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y gi\u00fap tr\u00e1nh vi\u1ec7c nh\u1ea7m l\u1eabn gi\u1eefa b\u00e1o gi\u00e1 v\u1edbi quy\u1ebft \u0111\u1ecbnh ph\u00ea duy\u1ec7t k\u1ef9 thu\u1eadt ch\u00ednh th\u1ee9c. N\u1ebfu nh\u00e0 cung c\u1ea5p \u0111\u1ec1 xu\u1ea5t m\u1ed9t m\u1eabu s\u1ea3n ph\u1ea9m thay th\u1ebf ho\u1eb7c s\u1ed1 l\u01b0\u1ee3ng c\u1ed9t kh\u00e1c, h\u00e3y y\u00eau c\u1ea7u h\u1ecd cung c\u1ea5p b\u1ea3n so s\u00e1nh \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh d\u1ef1a tr\u00ean c\u00f9ng c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ea7u v\u00e0o c\u1ee7a d\u1ef1 \u00e1n. S\u1ea3n ph\u1ea9m thay th\u1ebf kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng k\u1ebf th\u1eeba gi\u1ea5y ph\u00e9p ph\u00ea duy\u1ec7t c\u1ee7a thi\u1ebft b\u1ecb ban \u0111\u1ea7u m\u00e0 kh\u00f4ng qua qu\u00e1 tr\u00ecnh xem x\u00e9t l\u1ea1i.<\/p>\n\n\n

S\u1eed d\u1ee5ng Quy tr\u00ecnh gi\u1ea3i quy\u1ebft khi\u1ebfu n\u1ea1i c\u1ee7a RITOKS<\/a> \u0111\u1ec3 chia s\u1ebb c\u00e1c y\u00eau c\u1ea7u \u0111\u00e3 \u0111\u01b0\u1ee3c ghi ch\u00e9p, \u0111\u1ed3ng th\u1eddi v\u1eabn gi\u1eef tr\u00e1ch nhi\u1ec7m \u0111\u1ed1i v\u1edbi nghi\u00ean c\u1ee9u b\u1ea3o v\u1ec7 d\u1ef1 \u00e1n v\u00e0 vi\u1ec7c ph\u00ea duy\u1ec7t thi\u1ebft k\u1ebf cu\u1ed1i c\u00f9ng. M\u1ed9t b\u1ea3n y\u00eau c\u1ea7u b\u00e1o gi\u00e1 (RFQ) r\u00f5 r\u00e0ng s\u1ebd gi\u00fap nh\u00e0 cung c\u1ea5p tr\u1ea3 l\u1eddi c\u00e1c c\u00e2u h\u1ecfi c\u1ee5 th\u1ec3 v\u1ec1 t\u00ednh t\u01b0\u01a1ng th\u00edch thay v\u00ec ph\u1ea3i ph\u1ecfng \u0111o\u00e1n d\u1ef1a tr\u00ean nh\u1eefng c\u1ee5m t\u1eeb chung chung nh\u01b0 \u201cthi\u1ebft b\u1ecb ng\u1eaft m\u1ea1ch cho pin\u201d.\u201d<\/p>\n\n

C\u00e1c v\u1ea5n \u0111\u1ec1 m\u00e0 c\u00e1c k\u1ef9 s\u01b0 c\u1ea7n gi\u1ea3i quy\u1ebft tr\u01b0\u1edbc khi ph\u00e1t h\u00e0nh<\/h2>\n

C\u00f3 th\u1ec3 ch\u1ecdn MCB DC d\u1ef1a tr\u00ean dung l\u01b0\u1ee3ng \u1eafc-quy kh\u00f4ng?<\/h3>\n\n

Kh\u00f4ng. Th\u00f4ng s\u1ed1 \u201cCapacity\u201d kh\u00f4ng m\u00f4 t\u1ea3 \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a c\u1ee7a m\u1ea1ch, d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 t\u1ea1i b\u1ed9 ng\u1eaft m\u1ea1ch, \u0111\u1eb7c t\u00ednh d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng hay c\u00e1c quy t\u1eafc k\u1ebft n\u1ed1i. H\u00e3y cung c\u1ea5p c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ea7u v\u00e0o c\u1ee5 th\u1ec3 c\u1ee7a d\u1ef1 \u00e1n tr\u01b0\u1edbc khi ki\u1ec3m tra c\u00e1c t\u00e0i li\u1ec7u li\u00ean quan.<\/p>\n\n

S\u1ea1c hai chi\u1ec1u c\u00f3 y\u00eau c\u1ea7u ph\u1ea3i s\u1eed d\u1ee5ng c\u1ea7u dao kh\u00f4ng ph\u00e2n c\u1ef1c kh\u00f4ng?<\/h3>\n\n

Vi\u1ec7c n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m tra d\u00f2ng \u0111i\u1ec7n hi\u1ec7n t\u1ea1i v\u00e0 h\u01b0\u1edbng s\u1ef1 c\u1ed1 t\u1ea1i v\u1ecb tr\u00ed c\u1ee5 th\u1ec3 c\u1ee7a thi\u1ebft b\u1ecb. Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea7u dao v\u00e0 h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o h\u00e0nh vi \u0111\u00e3 \u0111\u01b0\u1ee3c ghi nh\u1eadn trong t\u1eebng tr\u1ea1ng th\u00e1i li\u00ean quan. Kh\u00f4ng n\u00ean coi nh\u00e3n ghi c\u1ef1c t\u00ednh chung chung l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n

Khi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt kh\u1edbp nhau, li\u1ec7u thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c ni\u00eam y\u1ebft \u0111\u00f3 c\u00f3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t hay kh\u00f4ng?<\/h3>\n\n

Kh\u00f4ng. C\u1ea7n ki\u1ec3m tra kh\u1ea3 n\u0103ng ng\u1eaft m\u1ea1ch, \u0111i\u1ec7n \u00e1p t\u1ea1i c\u00e1c c\u1ed9t d\u1ef1 ki\u1ebfn, h\u01b0\u1edbng c\u1ee7a c\u00e1c \u0111\u1ea7u n\u1ed1i, \u0111i\u1ec1u ki\u1ec7n l\u1eafp \u0111\u1eb7t v\u00e0 s\u1ef1 ph\u1ed1i h\u1ee3p. Gi\u1ea5y ph\u00ea duy\u1ec7t ph\u1ea3i n\u00eau r\u00f5 m\u1eabu c\u1ee5 th\u1ec3 v\u00e0 phi\u00ean b\u1ea3n b\u1ea3n v\u1ebd \u0111\u00e3 \u0111\u01b0\u1ee3c k\u1ef9 s\u01b0 xem x\u00e9t.<\/p>\n\n

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

H\u00e3y b\u1eaft \u0111\u1ea7u t\u1eeb m\u1ea1ch pin v\u00e0 vi\u1ec7c ph\u00e2n t\u00edch l\u1ed7i c\u1ee7a n\u00f3; sau \u0111\u00f3 so s\u00e1nh c\u00e1c t\u00e0i li\u1ec7u m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c. Ph\u00e2n t\u00edch chi ti\u1ebft nh\u1ea5t ph\u1ea3i n\u00eau r\u00f5 c\u1ea3 ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 d\u1ef1 ki\u1ebfn l\u1eabn c\u00e1c \u0111i\u1ec1u ki\u1ec7n m\u00e0 trong \u0111\u00f3 MCB DC \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng. N\u00ean \u0111\u1ec3 ng\u1ecf c\u00e1c gi\u00e1 tr\u1ecb ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh \u0111\u1ec3 ph\u1ee5c v\u1ee5 vi\u1ec7c r\u00e0 so\u00e1t k\u1ef9 thu\u1eadt, thay v\u00ec bi\u1ebfn m\u1ed9t trang gi\u1edbi thi\u1ec7u d\u00f2ng s\u1ea3n ph\u1ea9m th\u00e0nh m\u1ed9t tuy\u00ean b\u1ed1 v\u1ec1 an to\u00e0n.<\/p>\n\n

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