{"id":4217,"date":"2026-09-21T00:00:00","date_gmt":"2026-09-21T00:00:00","guid":{"rendered":"https:\/\/chac-electric.com\/?p=4217"},"modified":"2026-09-18T08:00:14","modified_gmt":"2026-09-18T08:00:14","slug":"thiet-bi-bao-ve-mach-dong-co-va-cau-dao-tu-dong","status":"publish","type":"post","link":"https:\/\/chac-electric.com\/vi\/blog\/motor-circuit-protector-vs-circuit-breaker\/","title":{"rendered":"B\u1ed9 b\u1ea3o v\u1ec7 m\u1ea1ch \u0111\u1ed9ng c\u01a1 v\u00e0 C\u1ea7u dao \u0111i\u1ec7n"},"content":{"rendered":"

Khi m\u1ed9t vai tr\u00f2 trong d\u1ef1 \u00e1n g\u1eb7p s\u1ef1 c\u1ed1 l\u1ef1a ch\u1ecdn, th\u1ea5t b\u1ea1i hi\u1ec3n hi\u1ec7n th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n tr\u01b0\u1edbc khi nguy\u00ean nh\u00e2n th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c hi\u1ec3u r\u00f5. Maya, m\u1ed9t k\u1ef9 s\u01b0 \u0111i\u1ec1u khi\u1ec3n \u1edf Rotterdam, \u0111\u00e3 b\u1eaft \u0111\u1ea7u vi\u1ec7c n\u00e2ng c\u1ea5p b\u0103ng t\u1ea3i b\u1eb1ng c\u00e1ch thay th\u1ebf m\u1ed9t aptomat nh\u00e1nh th\u00f4ng th\u01b0\u1eddng b\u1eb1ng thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 m\u1ea1ch \u0111\u1ed9ng c\u01a1. L\u1ea7n kh\u1edfi \u0111\u1ed9ng \u0111\u1ea7u ti\u00ean c\u00f3 v\u1ebb \u1ed5n; \u1edf l\u1ea7n k\u1eb9t ti\u1ebfp theo, b\u1ed9 truy\u1ec1n \u0111\u1ed9ng \u0111\u00e3 ng\u1eaft tr\u01b0\u1edbc khi b\u1ed9 kh\u1edfi \u0111\u1ed9ng c\u00f3 th\u1ec3 ph\u1ed1i h\u1ee3p v\u00e0 d\u00e2y chuy\u1ec1n d\u1eebng l\u1ea1i. \u0110\u00e1nh gi\u00e1 h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n cho th\u1ea5y nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 l\u00e0 do vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 ph\u1ed1i h\u1ee3p b\u1ea3o v\u1ec7, ch\u1ee9 kh\u00f4ng ph\u1ea3i do thi\u1ebft b\u1ecb b\u1ecb l\u1ed7i.<\/p>\n

T\u00f3m t\u1eaft:<\/strong> Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 m\u1ea1ch \u0111\u1ed9ng c\u01a1 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho vi\u1ec7c b\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch xung quanh b\u1ed9 kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1, trong khi c\u1ea7u dao t\u1ed5ng c\u0169ng c\u00f3 th\u1ec3 cung c\u1ea5p t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i. Theo ti\u00eau chu\u1ea9n IEC, c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf ph\u1ed1i h\u1ee3p c\u1ea7u dao, r\u01a1-le qu\u00e1 t\u1ea3i v\u00e0 kh\u1edfi \u0111\u1ed9ng t\u1eeb \u0111\u1ec3 \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 kh\u1edfi \u0111\u1ed9ng m\u00e0 kh\u00f4ng b\u1ecb ng\u1eaft qu\u00e3ng phi\u1ec1n to\u00e1i v\u00e0 v\u1eabn x\u1eed l\u00fd s\u1ef1 c\u1ed1 nhanh ch\u00f3ng. H\u00e3y x\u00e1c \u0111\u1ecbnh d\u00f2ng \u0111i\u1ec7n r\u00f4-to b\u1ecb kh\u00f3a c\u1ee7a \u0111\u1ed9ng c\u01a1, kh\u1ea3 n\u0103ng mang d\u00f2ng c\u1ee7a c\u00e1p v\u00e0 m\u1ee9c \u0111\u1ed9 s\u1ef1 c\u1ed1 y\u00eau c\u1ea7u tr\u01b0\u1edbc khi ch\u1ecdn thi\u1ebft b\u1ecb. B\u00e0i vi\u1ebft n\u00e0y duy tr\u00ec vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean b\u1eb1ng ch\u1ee9ng v\u00e0 ph\u00e2n t\u00e1ch r\u00f5 r\u00e0ng gi\u1eefa n\u0103ng l\u1ef1c s\u1ea3n ph\u1ea9m v\u00e0 tr\u00e1ch nhi\u1ec7m l\u1eafp \u0111\u1eb7t.<\/p>\n

\"\u1ee8ng<\/p>\n

Ph\u00e2n t\u00e1ch ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch v\u00e0 qu\u00e1 t\u1ea3i<\/h2>\n

C\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang b\u1eaft \u0111\u1ea7u t\u1eeb ranh gi\u1edbi \u1ee9ng d\u1ee5ng. H\u00e3y x\u00e1c \u0111\u1ecbnh ngu\u1ed3n, t\u1ea3i, d\u00e2y d\u1eabn, m\u1ee9c \u0111\u1ed9 s\u1ef1 c\u1ed1 v\u00e0 m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh tr\u01b0\u1edbc khi so s\u00e1nh c\u00e1c catalogue. M\u1ed9t thi\u1ebft b\u1ecb tr\u00f4ng c\u00f3 v\u1ebb ph\u00f9 h\u1ee3p v\u1ec1 \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n v\u1eabn c\u00f3 th\u1ec3 h\u1ecfng v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ed3 quang, t\u00ednh ch\u1ecdn l\u1ecdc, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t. H\u00e3y s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n \u0111i d\u00e2y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0m ng\u00f4n ng\u1eef chung gi\u1eefa thi\u1ebft k\u1ebf, mua s\u1eafm v\u00e0 ch\u1ea1y th\u1eed.<\/p>\n

L\u1eadp t\u00e0i li\u1ec7u v\u1ec1 c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 ki\u1ec3m tra ch\u00fang t\u1ea1i t\u1ee7 \u0111i\u1ec7n. V\u00ed d\u1ee5, m\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 b\u1ea3o v\u1ec7 c\u1ea7n n\u00eau r\u00f5 d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn, d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng (inrush) d\u1ef1 ki\u1ebfn, kh\u1ea3 n\u0103ng mang d\u00f2ng c\u1ee7a d\u00e2y d\u1eabn v\u00e0 th\u1eddi gian c\u1eaft y\u00eau c\u1ea7u. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u00f3 t\u00ean g\u1ecdi c\u1ee5 th\u1ec3 nh\u01b0 th\u1eed nghi\u1ec7m ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p, th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n ho\u1eb7c nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p s\u1ebd h\u1eefu \u00edch h\u01a1n so v\u1edbi m\u1ed9t tuy\u00ean b\u1ed1 chung chung r\u1eb1ng m\u1ed9t s\u1ea3n ph\u1ea9m \u0111\u1ea1t \u201cc\u1ea5p \u0111\u1ed9 c\u00f4ng nghi\u1ec7p.\u201d<\/p>\n

N\u1ebfu c\u00e2u tr\u1ea3 l\u1eddi thay \u0111\u1ed5i theo th\u1ecb tr\u01b0\u1eddng \u0111\u00edch, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p ho\u1eb7c lo\u1ea1i \u1ee9ng d\u1ee5ng, h\u00e3y n\u00eau gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn b\u1eb1ng v\u0103n b\u1ea3n tr\u01b0\u1edbc khi ph\u00e1t h\u00e0nh.<\/p>\n

Ph\u1ed1i h\u1ee3p v\u1edbi kh\u1edfi \u0111\u1ed9ng t\u1eeb v\u00e0 r\u01a1-le qu\u00e1 t\u1ea3i<\/h2>\n

C\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang b\u1eaft \u0111\u1ea7u t\u1eeb ranh gi\u1edbi \u1ee9ng d\u1ee5ng. H\u00e3y x\u00e1c \u0111\u1ecbnh ngu\u1ed3n, t\u1ea3i, d\u00e2y d\u1eabn, m\u1ee9c \u0111\u1ed9 s\u1ef1 c\u1ed1 v\u00e0 m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh tr\u01b0\u1edbc khi so s\u00e1nh c\u00e1c catalogue. M\u1ed9t thi\u1ebft b\u1ecb tr\u00f4ng c\u00f3 v\u1ebb ph\u00f9 h\u1ee3p v\u1ec1 \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n v\u1eabn c\u00f3 th\u1ec3 h\u1ecfng v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ed3 quang, t\u00ednh ch\u1ecdn l\u1ecdc, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t. H\u00e3y s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n \u0111i d\u00e2y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0m ng\u00f4n ng\u1eef chung gi\u1eefa thi\u1ebft k\u1ebf, mua s\u1eafm v\u00e0 ch\u1ea1y th\u1eed.<\/p>\n

L\u1eadp t\u00e0i li\u1ec7u v\u1ec1 c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 ki\u1ec3m tra ch\u00fang t\u1ea1i t\u1ee7 \u0111i\u1ec7n. V\u00ed d\u1ee5, m\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 b\u1ea3o v\u1ec7 c\u1ea7n n\u00eau r\u00f5 d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn, d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng (inrush) d\u1ef1 ki\u1ebfn, kh\u1ea3 n\u0103ng mang d\u00f2ng c\u1ee7a d\u00e2y d\u1eabn v\u00e0 th\u1eddi gian c\u1eaft y\u00eau c\u1ea7u. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u00f3 t\u00ean g\u1ecdi c\u1ee5 th\u1ec3 nh\u01b0 th\u1eed nghi\u1ec7m ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p, th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n ho\u1eb7c nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p s\u1ebd h\u1eefu \u00edch h\u01a1n so v\u1edbi m\u1ed9t tuy\u00ean b\u1ed1 chung chung r\u1eb1ng m\u1ed9t s\u1ea3n ph\u1ea9m \u0111\u1ea1t \u201cc\u1ea5p \u0111\u1ed9 c\u00f4ng nghi\u1ec7p.\u201d<\/p>\n

N\u1ebfu c\u00e2u tr\u1ea3 l\u1eddi thay \u0111\u1ed5i theo th\u1ecb tr\u01b0\u1eddng \u0111\u00edch, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p ho\u1eb7c lo\u1ea1i \u1ee9ng d\u1ee5ng, h\u00e3y n\u00eau gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn b\u1eb1ng v\u0103n b\u1ea3n tr\u01b0\u1edbc khi ph\u00e1t h\u00e0nh.<\/p>\n

\u1ee8ng d\u1ee5ng v\u00e0 ki\u1ec3m tra b\u1ed9 kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1<\/h2>\n

C\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang b\u1eaft \u0111\u1ea7u t\u1eeb ranh gi\u1edbi \u1ee9ng d\u1ee5ng. H\u00e3y x\u00e1c \u0111\u1ecbnh ngu\u1ed3n, t\u1ea3i, d\u00e2y d\u1eabn, m\u1ee9c \u0111\u1ed9 s\u1ef1 c\u1ed1 v\u00e0 m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh tr\u01b0\u1edbc khi so s\u00e1nh c\u00e1c catalogue. M\u1ed9t thi\u1ebft b\u1ecb tr\u00f4ng c\u00f3 v\u1ebb ph\u00f9 h\u1ee3p v\u1ec1 \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n v\u1eabn c\u00f3 th\u1ec3 h\u1ecfng v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ed3 quang, t\u00ednh ch\u1ecdn l\u1ecdc, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t. H\u00e3y s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n \u0111i d\u00e2y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0m ng\u00f4n ng\u1eef chung gi\u1eefa thi\u1ebft k\u1ebf, mua s\u1eafm v\u00e0 ch\u1ea1y th\u1eed.<\/p>\n

L\u1eadp t\u00e0i li\u1ec7u v\u1ec1 c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 ki\u1ec3m tra ch\u00fang t\u1ea1i t\u1ee7 \u0111i\u1ec7n. V\u00ed d\u1ee5, m\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 b\u1ea3o v\u1ec7 c\u1ea7n n\u00eau r\u00f5 d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn, d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng (inrush) d\u1ef1 ki\u1ebfn, kh\u1ea3 n\u0103ng mang d\u00f2ng c\u1ee7a d\u00e2y d\u1eabn v\u00e0 th\u1eddi gian c\u1eaft y\u00eau c\u1ea7u. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u00f3 t\u00ean g\u1ecdi c\u1ee5 th\u1ec3 nh\u01b0 th\u1eed nghi\u1ec7m ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p, th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n ho\u1eb7c nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p s\u1ebd h\u1eefu \u00edch h\u01a1n so v\u1edbi m\u1ed9t tuy\u00ean b\u1ed1 chung chung r\u1eb1ng m\u1ed9t s\u1ea3n ph\u1ea9m \u0111\u1ea1t \u201cc\u1ea5p \u0111\u1ed9 c\u00f4ng nghi\u1ec7p.\u201d<\/p>\n

N\u1ebfu c\u00e2u tr\u1ea3 l\u1eddi thay \u0111\u1ed5i theo th\u1ecb tr\u01b0\u1eddng \u0111\u00edch, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p ho\u1eb7c lo\u1ea1i \u1ee9ng d\u1ee5ng, h\u00e3y n\u00eau gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn b\u1eb1ng v\u0103n b\u1ea3n tr\u01b0\u1edbc khi ph\u00e1t h\u00e0nh.<\/p>\n

\"T\u00e0i<\/p>\n

So s\u00e1nh cho m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 t\u00ednh b\u1ea3o v\u1ec7<\/h2>\n\n\n\n\n\n\n\n
K\u00edch th\u01b0\u1edbc<\/th>\nL\u1ef1a ch\u1ecdn A<\/th>\nPh\u01b0\u01a1ng \u00e1n B<\/th>\n<\/tr>\n<\/thead>\n
X\u1eed l\u00fd s\u1ef1 c\u1ed1 nhanh ch\u00f3ng<\/td>\nB\u1ea3o v\u1ec7 t\u1eeb t\u00ednh \u0111\u01b0\u1ee3c k\u00edch th\u01b0\u1edbc cho d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1<\/td>\n\u0110\u01b0\u1eddng cong t\u1eeb nhi\u1ec7t cho m\u1ea1ch c\u1ea5p ngu\u1ed3n<\/td>\n<\/tr>\n
X\u1eed l\u00fd qu\u00e1 t\u1ea3i<\/td>\nTh\u01b0\u1eddng d\u1ef1a v\u00e0o m\u1ed9t r\u01a1-le qu\u00e1 t\u1ea3i ri\u00eang bi\u1ec7t<\/td>\nC\u00f3 th\u1ec3 bao g\u1ed3m ch\u1ee9c n\u0103ng qu\u00e1 t\u1ea3i nhi\u1ec7t<\/td>\n<\/tr>\n
Ph\u00f9 h\u1ee3p nh\u1ea5t<\/td>\nNh\u00e1nh \u0111\u1ed9ng c\u01a1 c\u00f3 b\u1ed9 kh\u1edfi \u0111\u1ed9ng<\/td>\nM\u1ea1ch ph\u00e2n ph\u1ed1i ho\u1eb7c l\u1ed9 ra c\u00f3 m\u1ee5c \u0111\u00edch h\u1ed7n h\u1ee3p<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c ho\u1ea1t \u0111\u1ed9ng l\u1ef1a ch\u1ecdn v\u00e0 mua s\u1eafm<\/h2>\n
    \n
  1. \u0110\u00f3ng b\u0103ng c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n: \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng, s\u1ed1 c\u1ef1c, d\u00f2ng t\u1ea3i, ph\u01b0\u01a1ng ph\u00e1p d\u1eabn \u0111i\u1ec7n, d\u00f2ng s\u1ef1 c\u1ed1 v\u00e0 gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng.<\/li>\n
  2. Y\u00eau c\u1ea7u d\u1eef li\u1ec7u theo d\u00f2ng s\u1ea3n ph\u1ea9m: phi\u00ean b\u1ea3n ti\u00eau chu\u1ea9n, \u0111\u01b0\u1eddng \u0111\u1eb7c t\u00ednh d\u00f2ng c\u1eaft, kh\u1ea3 n\u0103ng ng\u1eaft, gi\u1edbi h\u1ea1n c\u1ef1c \u0111\u1ea5u d\u00e2y, k\u00edch th\u01b0\u1edbc v\u00e0 b\u1eb1ng ch\u1ee9ng th\u1eed nghi\u1ec7m.<\/li>\n
  3. Xem x\u00e9t vi\u1ec7c ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb th\u01b0\u1ee3ng ngu\u1ed3n v\u00e0 h\u1ea1 ngu\u1ed3n; kh\u00f4ng suy lu\u1eadn t\u00ednh ch\u1ecdn l\u1ecdc t\u1eeb nh\u00e3n hi\u1ec7u ho\u1eb7c k\u00edch th\u01b0\u1edbc khung.<\/li>\n
  4. Ph\u00ea duy\u1ec7t m\u1eabu ho\u1eb7c b\u00e0i vi\u1ebft \u0111\u1ea7u ti\u00ean, ghi l\u1ea1i l\u1ef1c si\u1ebft v\u00e0 c\u00e1c \u0111i\u1ec3m ki\u1ec3m tra, \u0111\u1ed3ng th\u1eddi x\u00e1c \u0111\u1ecbnh ai l\u00e0 ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra ch\u1ea1y th\u1eed.<\/li>\n
  5. L\u1eadp k\u1ebf ho\u1ea1ch ph\u1ee5 t\u00f9ng v\u00e0 qu\u1ea3n l\u00fd thay \u0111\u1ed5i \u0111\u1ec3 vi\u1ec7c thay th\u1ebf sau n\u00e0y kh\u00f4ng l\u00e0m thay \u0111\u1ed5i \u00e2m th\u1ea7m hi\u1ec7u su\u1ea5t an to\u00e0n.<\/li>\n<\/ol>\n

    \u0110\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi mua \u0111ang so s\u00e1nh c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 c\u1ea5u h\u00ecnh, CHAC Electric cung c\u1ea5p th\u00f4ng tin c\u00f4ng khai v\u1ec1 C\u00e1c s\u1ea3n ph\u1ea9m MCB<\/strong><\/a> v\u00e0 thi\u1ebft b\u1ecb ph\u00e2n ph\u1ed1i \u0111i\u1ec7n<\/strong><\/a>. H\u00e3y coi c\u00e1c trang n\u00e0y l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u v\u00e0 x\u00e1c nh\u1eadn d\u1eef li\u1ec7u m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/p>\n

    <\/p>\n

    Gh\u00e9p d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1 v\u1edbi ph\u01b0\u01a1ng \u00e1n b\u1ea3o v\u1ec7<\/h2>\n

    A b\u1ea3o v\u1ec7 m\u1ea1ch \u0111\u1ed9ng c\u01a1<\/strong><\/a> \u0111\u01b0\u1ee3c ch\u1ecdn t\u1eeb c\u1ea5u h\u00ecnh kh\u1edfi \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1, trong khi B\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch<\/strong><\/a> v\u1eabn ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c s\u1ef1 c\u1ed1 c\u00f3 s\u1eb5n. C\u00e2u h\u1ecfi thi\u1ebft k\u1ebf h\u1eefu \u00edch kh\u00f4ng ph\u1ea3i l\u00e0 thi\u1ebft b\u1ecb n\u00e0o c\u00f3 s\u1ed1 am-pe cao nh\u1ea5t, m\u00e0 l\u00e0 c\u00e0i \u0111\u1eb7t qu\u00e1 t\u1ea3i, ph\u1ea3n \u1ee9ng t\u1eeb t\u00ednh v\u00e0 s\u1ef1 ph\u1ed1i h\u1ee3p ng\u01b0\u1ee3c d\u00f2ng c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a \u0111\u1ed9ng c\u01a1 m\u00e0 kh\u00f4ng che gi\u1ea5u s\u1ef1 c\u1ed1 k\u1eb9t r\u00f4-t\u01a1 hay kh\u00f4ng. X\u1eed l\u00fd ph\u1ed1i h\u1ee3p qu\u00e1 t\u1ea3i \u0111\u1ed9ng c\u01a1<\/strong> nh\u01b0 m\u1ed9t ki\u1ec3m tra c\u00f3 t\u00e0i li\u1ec7u v\u1edbi b\u1ea3ng d\u1eef li\u1ec7u \u0111\u1ed9ng c\u01a1 v\u00e0 th\u00f4ng tin th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n

    M\u1ed9t \u0111\u00e1nh gi\u00e1 th\u1ef1c t\u1ebf c\u1ea7n ghi l\u1ea1i d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng, th\u1eddi gian kh\u1edfi \u0111\u1ed9ng, ch\u1ebf \u0111\u1ed9 l\u00e0m vi\u1ec7c, c\u00e1c y\u00eau c\u1ea7u ch\u1ed1ng m\u1ea5t pha v\u00e0 ch\u00ednh s\u00e1ch c\u00e0i \u0111\u1eb7t l\u1ea1i. N\u1ebfu thi\u1ebfu c\u00e1c \u0111\u1ea7u v\u00e0o \u0111\u00f3, h\u00e3y \u0111\u00e1nh d\u1ea5u l\u1ef1a ch\u1ecdn l\u00e0 c\u00f3 \u0111i\u1ec1u ki\u1ec7n thay v\u00ec g\u1ecdi m\u1ed9t thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 l\u00e0 ph\u00f9 h\u1ee3p ph\u1ed5 qu\u00e1t.<\/p>\n

    B\u00e0i vi\u1ebft li\u00ean quan: Aptomat kh\u1ed1i (MCCB) so v\u1edbi aptomat t\u00e9p (MCB)<\/a> gi\u1ea3i th\u00edch k\u00edch th\u01b0\u1edbc khung v\u00e0 m\u1ee9c s\u1ef1 c\u1ed1 \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn ki\u1ebfn tr\u00fac b\u1ea3o v\u1ec7 di\u1ec7n r\u1ed9ng.<\/p>\n

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

    B\u1ed9 b\u1ea3o v\u1ec7 m\u1ea1ch \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 thay th\u1ebf r\u01a1-le qu\u00e1 t\u1ea3i kh\u00f4ng?<\/h3>\n

    Th\u01b0\u1eddng l\u00e0 kh\u00f4ng. MCP th\u01b0\u1eddng x\u1eed l\u00fd vi\u1ec7c b\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch v\u00e0 ch\u1ea1m \u0111\u1ea5t, trong khi r\u01a1-le qu\u00e1 t\u1ea3i b\u1ea3o v\u1ec7 \u0111\u1ed9ng c\u01a1 kh\u1ecfi t\u00ecnh tr\u1ea1ng qu\u00e1 d\u00f2ng k\u00e9o d\u00e0i. H\u00e3y s\u1eed d\u1ee5ng b\u1ea3ng ph\u1ed1i h\u1ee3p c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 d\u1eef li\u1ec7u tr\u00ean nh\u00e3n \u0111\u1ed9ng c\u01a1 tr\u01b0\u1edbc khi b\u1ecf b\u1ea5t k\u1ef3 th\u00e0nh ph\u1ea7n n\u00e0o.<\/p>\n

    T\u1ea1i sao m\u1ed9t \u0111\u1ed9ng c\u01a1 l\u1ea1i l\u00e0m ng\u1eaft c\u1ea7u dao ti\u00eau chu\u1ea9n khi kh\u1edfi \u0111\u1ed9ng?<\/h3>\n

    D\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng c\u00f3 th\u1ec3 g\u1ea5p nhi\u1ec1u l\u1ea7n d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7y t\u1ea3i, v\u00ec v\u1eady c\u00e0i \u0111\u1eb7t t\u1ee9c th\u1eddi ho\u1eb7c nhi\u1ec7t c\u00f3 th\u1ec3 qu\u00e1 th\u1ea5p. H\u00e3y ch\u1ecdn m\u1ed9t \u0111\u01b0\u1eddng \u0111\u1eb7c t\u00ednh v\u00e0 ng\u01b0\u1ee1ng t\u1eeb t\u00ednh c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c d\u00f2ng kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9t ng\u1ed9t theo t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt, \u0111\u1ed3ng th\u1eddi v\u1eabn n\u1eb1m trong gi\u1edbi h\u1ea1n c\u1ee7a c\u00e1p v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu s\u1ef1 c\u1ed1.<\/p>\n

    S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa MCP v\u00e0 MCCB l\u00e0 g\u00ec?<\/h3>\n

    MCP l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 nh\u00e1nh \u0111\u1ed9ng c\u01a1 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng c\u00f9ng v\u1edbi b\u1ed9 kh\u1edfi \u0111\u1ed9ng; MCCB l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng v\u1ecf \u0111\u00fac r\u1ed9ng h\u01a1n v\u1edbi khung l\u1edbn h\u01a1n v\u00e0 c\u00e1c t\u00f9y ch\u1ecdn c\u1eaft d\u00f2ng. S\u1ef1 l\u1ef1a ch\u1ecdn ch\u00ednh x\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0o d\u00f2ng \u0111i\u1ec7n, m\u1ee9c \u0111\u1ed9 ng\u1eafn m\u1ea1ch v\u00e0 nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p.<\/p>\n

    Ph\u1ed1i h\u1ee3p qu\u00e1 t\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c minh nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n

    So s\u00e1nh d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7y t\u1ea3i c\u1ee7a \u0111\u1ed9ng c\u01a1, h\u1ec7 s\u1ed1 ph\u1ee5c v\u1ee5, c\u00e0i \u0111\u1eb7t qu\u00e1 t\u1ea3i v\u00e0 \u0111\u01b0\u1eddng cong c\u1eaft c\u1ee7a aptomat, sau \u0111\u00f3 x\u00e1c th\u1ef1c b\u1eb1ng d\u1eef li\u1ec7u th\u1eed nghi\u1ec7m Lo\u1ea1i 1\/Lo\u1ea1i 2 ho\u1eb7c t\u00e0i li\u1ec7u ph\u1ed1i h\u1ee3p \u0111\u00e3 c\u00f4ng b\u1ed1 c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ed9 kh\u1edfi \u0111\u1ed9ng. Ki\u1ec3m tra hi\u1ec7n tr\u01b0\u1eddng t\u1ee7 \u0111i\u1ec7n \u0111\u00e3 l\u1eafp r\u00e1p tr\u01b0\u1edbc khi b\u00e0n giao.<\/p>\n

    T\u00e0i li\u1ec7u tham kh\u1ea3o c\u00f3 th\u1ea9m quy\u1ec1n<\/h2>\n