{"id":2745,"date":"2026-06-12T01:45:44","date_gmt":"2026-06-12T01:45:44","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=2745"},"modified":"2026-06-12T01:45:46","modified_gmt":"2026-06-12T01:45:46","slug":"dc-mcb-ac-circuit-compatibility","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/vi\/blog\/dc-mcb-ac-circuit-compatibility\/","title":{"rendered":"T\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a DC MCB v\u1edbi m\u1ea1ch AC"},"content":{"rendered":"

M\u1ed9t nh\u00e0 l\u1eafp \u0111\u1eb7t n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi \u1edf Arizona \u0111\u00e3 li\u00ean h\u1ec7 v\u1edbi b\u1ed9 ph\u1eadn h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 m\u1ed9t th\u00e1ch th\u1ee9c v\u1edbi vi\u1ec7c l\u1eafp \u0111\u1eb7t c\u1ee7a anh \u1ea5y \u0111\u00e3 l\u00e0m ng\u1eebng th\u1ef1c hi\u1ec7n to\u00e0n b\u1ed9 d\u1ef1 \u00e1n. M\u1ed9t h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng pin nh\u1ecf \u0111\u00e3 s\u1eb5n s\u00e0ng \u0111\u1ec3 \u0111\u01b0a v\u00e0o v\u1eadn h\u00e0nh v\u00e0 nh\u00e0 l\u1eafp \u0111\u1eb7t c\u1ea7n m\u1ed9t c\u1ea7u dao 63 amp \u0111\u1ec3 b\u1ea3o v\u1ec7 \u0111\u1ea7u ra AC c\u1ee7a b\u1ed9 bi\u1ebfn t\u1ea7n. Nh\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u00e3 c\u00f3 m\u1ed9t c\u1ea7u dao DC tr\u00ean k\u1ec7 c\u00f3 \u0111\u1ecbnh m\u1ee9c 63 amp, \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh \u0111\u1ec3 l\u00e0m vi\u1ec7c v\u1edbi s\u1ed1 l\u01b0\u1ee3ng c\u1ef1c c\u1ea7n thi\u1ebft, v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf \u0111i\u1ec7n \u00e1p \u0111\u00fang; n\u00f3 c\u0169ng v\u1eeba v\u1eb7n v\u1edbi thanh DIN m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c. Nh\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u00e3 l\u1eafp \u0111\u1eb7t c\u1ea7u dao, b\u1eadt n\u00f3 l\u00ean v\u00e0 h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang trong kho\u1ea3ng 3 tu\u1ea7n cho \u0111\u1ebfn ng\u00e0y c\u1ea7u dao b\u1ecb ng\u1eaft d\u01b0\u1edbi t\u1ea3i t\u1ed1i \u0111a. Nh\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u00e3 \u0111\u1eb7t l\u1ea1i c\u1ea7u dao sau khi n\u00f3 b\u1ecb ng\u1eaft v\u00e0 n\u00f3 l\u1ea1i b\u1ecb ng\u1eaft m\u1ed9t l\u1ea7n n\u1eefa v\u1edbi c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u1ea7u dao b\u1ecb h\u00e0n \u1edf v\u1ecb tr\u00ed \u0111\u00f3ng. Sau khi ti\u1ebfn h\u00e0nh \u0111i\u1ec1u tra th\u00eam, \u0111\u00e3 ph\u00e1t hi\u1ec7n r\u1eb1ng nh\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u00e3 v\u00f4 t\u00ecnh l\u1eafp \u0111\u1eb7t m\u1ed9t c\u1ea7u dao m\u1ed9t pha (DC) trong m\u1ed9t m\u1ea1ch \u0111i\u1ec7n xoay chi\u1ec1u. Thi\u1ebft k\u1ebf c\u1ee7a c\u00e1c b\u1ed9 gi\u1ea3m h\u1ed3 quang b\u00ean trong MCB m\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a n\u00f3 \u0111\u01b0\u1ee3c vi\u1ebft cho DC \u0111\u00e3 t\u1ea1o ra m\u1ed9t \u0111i\u1ec1u ki\u1ec7n kh\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ec3 t\u1eaft AC d\u01b0\u1edbi t\u1ea3i m\u1ed9t c\u00e1ch ch\u1ea5p nh\u1eadn (t\u1ee9c l\u00e0 an to\u00e0n).<\/p>\n

Khi c\u00e1c h\u1ec7 th\u1ed1ng DC \u2013 n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi PV, h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng pin v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng kh\u00f4ng l\u01b0\u1edbi tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n v\u00e0 c\u00e1c c\u1ea7u dao c\u00f3 \u0111\u1ecbnh m\u1ee9c DC b\u1eaft \u0111\u1ea7u c\u00f3 s\u1eb5n, c\u00e2u chuy\u1ec7n n\u00e0y th\u01b0\u1eddng t\u1ef1 l\u1eb7p l\u1ea1i v\u00ec m\u1ed9t s\u1ed1 th\u1ee3 \u0111i\u1ec7n v\u00e0 k\u1ef9 thu\u1eadt vi\u00ean ch\u1ec9 l\u00e0m vi\u1ec7c v\u1edbi \u0111i\u1ec7n AC \u1edf m\u1ed9t th\u1eddi \u0111i\u1ec3m n\u00e0o \u0111\u00f3 trong s\u1ef1 nghi\u1ec7p c\u1ee7a h\u1ecd cho r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c c\u1ea7u dao \u0111\u1ec1u gi\u1ed1ng nhau. Ch\u00fang kh\u00f4ng gi\u1ed1ng nhau. T\u00ednh t\u01b0\u01a1ng th\u00edch c\u1ee7a m\u1ed9t MCB DC v\u1edbi m\u1ed9t m\u1ea1ch AC l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi m\u00e0 vi\u1ec7c \u0111\u01b0a ra c\u00e2u tr\u1ea3 l\u1eddi sai c\u00f3 th\u1ec3 g\u00e2y ra h\u1ecfa ho\u1ea1n thay v\u00ec ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 m\u1ed9t s\u1ef1 ng\u1eaft kh\u00f4ng mong mu\u1ed1n.<\/p>\n

\"S\u1ef1<\/p>\n

S\u1ef1 Kh\u00e1c Bi\u1ec7t C\u01a1 B\u1ea3n Gi\u1eefa Ng\u1eaft H\u1ed3 Quang AC v\u00e0 DC<\/h2>\n

Tr\u01b0\u1edbc khi b\u1ea1n c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh xem m\u1ed9t MCB DC c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang trong m\u1ed9t m\u1ea1ch AC hay kh\u00f4ng, b\u1ea1n c\u1ea7n hi\u1ec3u c\u00e1ch m\u00e0 MCB ph\u1ea3i d\u1eadp t\u1eaft h\u1ed3 quang ph\u00e1t sinh khi c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u1ee7a m\u1ea1ch \u0111\u01b0\u1ee3c m\u1edf d\u01b0\u1edbi t\u1ea3i (trong khi d\u00f2ng \u0111i\u1ec7n \u0111ang ch\u1ea3y qua m\u1ea1ch). H\u1ed3 quang \u0111i\u1ec7n \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch t\u00e1ch c\u00e1c ti\u1ebfp \u0111i\u1ec3m s\u1ebd ti\u1ebfp t\u1ee5c d\u1eabn \u0111i\u1ec7n mi\u1ec5n l\u00e0 kh\u00f4ng kh\u00ed ion h\u00f3a v\u1eabn d\u1eabn \u0111i\u1ec7n (n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi h\u1ed3 quang khi\u1ebfn kh\u00f4ng kh\u00ed gi\u1eefa hai ti\u1ebfp \u0111i\u1ec3m tr\u1edf n\u00ean ion h\u00f3a). Khi c\u1ea7u dao m\u1edf (ho\u1eb7c \u201cng\u1eaft\u201d), \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 c\u1ea7u dao ph\u1ea3i d\u1eadp t\u1eaft h\u1ed3 quang tr\u01b0\u1edbc khi d\u00f2ng \u0111i\u1ec7n ch\u1ea3y qua m\u1ea1ch \u0111i\u1ec7n tr\u1edf n\u00ean g\u00e2y h\u1ea1i; c\u1ea7u dao th\u1ef1c hi\u1ec7n \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1ch d\u1eadp t\u1eaft h\u1ed3 quang d\u1ef1a tr\u00ean vi\u1ec7c b\u1ea1n \u0111ang s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC) hay d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC).<\/p>\n

Do \u1ea3nh h\u01b0\u1edfng c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u c\u1ee7a m\u1ed9t chu k\u1ef3 s\u00f3ng \u0111\u1ecbnh k\u1ef3 \u0111i t\u1eeb \u00e2m sang d\u01b0\u01a1ng qua \u0111i\u1ec7n \u00e1p b\u1eb1ng kh\u00f4ng 2 l\u1ea7n m\u1ed7i chu k\u1ef3 ho\u1eb7c 100\/120 l\u1ea7n m\u1ed7i gi\u00e2y (50\/60Hz), t\u1ea1i m\u1ed7i \u0111i\u1ec3m giao nhau b\u1eb1ng kh\u00f4ng c\u00f3 c\u01a1 h\u1ed9i cho n\u0103ng l\u01b0\u1ee3ng h\u1ed3 quang ph\u00e2n t\u00e1n. Khe h\u1ed3 quang (m\u1ed9t lo\u1ea1t c\u00e1c t\u1ea5m kim lo\u1ea1i) t\u1eadn d\u1ee5ng kho\u1ea3ng d\u1eebng t\u1ef1 nhi\u00ean n\u00e0y ho\u1eb7c s\u1ef1 gi\u00e1n \u0111o\u1ea1n trong vi\u1ec7c ti\u1ebfp t\u1ee5c c\u1ee7a h\u1ed3 quang b\u1eb1ng c\u00e1ch ph\u00e1 v\u1ee1 h\u1ed3 quang th\u00e0nh c\u00e1c \u0111o\u1ea1n nh\u1ecf h\u01a1n, l\u00e0m m\u00e1t n\u00f3 v\u00e0 ng\u0103n n\u00f3 t\u00e1i ph\u00e1t \u2014 v\u1ec1 c\u01a1 b\u1ea3n s\u1eed d\u1ee5ng c\u1ea7u dao AC v\u1edbi khe h\u1ed3 quang v\u00e0 h\u00ecnh d\u1ea1ng t\u1ea5m t\u1ed1i \u01b0u h\u00f3a kh\u1ea3 n\u0103ng c\u1ee7a h\u1ed3 quang \u0111\u1ec3 t\u1ef1 d\u1eadp t\u1eaft t\u1ea1i c\u00e1c \u0111i\u1ec3m giao nhau b\u1eb1ng kh\u00f4ng ti\u1ebfp theo (kh\u00f4ng qu\u00e1 8,3 ms).<\/p>\n

Trong m\u1ed9t m\u1ea1ch DC, d\u00f2ng \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec3m giao nhau b\u1eb1ng kh\u00f4ng. Khi m\u1ed9t h\u1ed3 quang \u0111\u00e3 \u0111\u01b0\u1ee3c kh\u1edfi \u0111\u1ed9ng, n\u00f3 s\u1ebd ti\u1ebfp t\u1ee5c ch\u00e1y mi\u1ec5n l\u00e0 c\u00f3 \u0111\u1ee7 \u0111i\u1ec7n \u00e1p \u0111\u1ec3 h\u1ed7 tr\u1ee3 n\u00f3. \u0110\u1ec3 c\u1ea7u dao DC d\u1eadp t\u1eaft h\u1ed3 quang \u0111\u00f3, c\u1ea7u dao ph\u1ea3i t\u00e1c \u0111\u1ed9ng l\u1ef1c \u0111\u1ec3 k\u00e9o h\u1ed3 quang ra xa b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac h\u01a1n, l\u00e0m m\u00e1t n\u00f3 hi\u1ec7u qu\u1ea3 h\u01a1n v\u00e0 t\u0103ng \u0111i\u1ec7n \u00e1p c\u1ee7a h\u1ed3 quang cho \u0111\u1ebfn khi \u0111i\u1ec7n \u00e1p c\u1ee7a ngu\u1ed3n kh\u00f4ng c\u00f2n h\u1ed7 tr\u1ee3 n\u00f3. M\u1ed9t s\u1ed1 c\u00e1ch m\u00e0 c\u1ea7u dao DC th\u1ef1c hi\u1ec7n \u0111i\u1ec1u n\u00e0y l\u00e0 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng cu\u1ed9n t\u1eeb tr\u01b0\u1eddng th\u1ed5i m\u1ea1nh h\u01a1n, kho\u1ea3ng c\u00e1ch r\u1ed9ng h\u01a1n gi\u1eefa c\u00e1c ti\u1ebfp \u0111i\u1ec3m v\u00e0 khe h\u1ed3 quang v\u1edbi c\u00e1c v\u1eadt li\u1ec7u v\u00e0 h\u00ecnh d\u1ea1ng t\u1ea5m kh\u00e1c nhau. M\u1ed9t s\u1ed1 thi\u1ebft k\u1ebf c\u0169ng s\u1eed d\u1ee5ng nam ch\u00e2m v\u0129nh c\u1eedu \u0111\u1ea9y h\u1ed3 quang v\u00e0o m\u1ed9t h\u1ed3 quang xo\u1eafn d\u00e0i h\u01a1n, \u0111i\u1ec1u n\u00e0y kh\u00f4ng c\u00f3 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng trong m\u1ed9t MCB AC ti\u00eau chu\u1ea9n.<\/p>\n

\"C\u00f3<\/p>\n

C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng MCB DC trong m\u1ed9t m\u1ea1ch AC kh\u00f4ng?<\/h2>\n

C\u00e2u tr\u1ea3 l\u1eddi \u0111\u01a1n gi\u1ea3n l\u00e0 \u201cKh\u00f4ng, c\u00e1c MCB DC ti\u00eau chu\u1ea9n (C\u1ea7u dao Miniature) kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 s\u1eed d\u1ee5ng tr\u00ean c\u00e1c m\u1ea1ch AC (D\u00f2ng \u0111i\u1ec7n Xoay chi\u1ec1u) tr\u1eeb khi nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e3 r\u00f5 r\u00e0ng \u0111\u00e1nh gi\u00e1 v\u00e0 ch\u1ee9ng nh\u1eadn s\u1ea3n ph\u1ea9m cho ho\u1ea1t \u0111\u1ed9ng (AC) c\u0169ng nh\u01b0 DC. Do c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a h\u1ec7 th\u1ed1ng d\u1eadp t\u1eaft h\u1ed3 quang DC, c\u1ea7u dao DC \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ng\u1eaft DC; tuy nhi\u00ean, c\u00f9ng m\u1ed9t th\u00e0nh ph\u1ea7n v\u1eadt l\u00fd c\u00f3 th\u1ec3 c\u1ea3n tr\u1edf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u1ea7u dao khi c\u1ed1 g\u1eafng ng\u1eaft AC. V\u00ed d\u1ee5, tr\u01b0\u1eddng t\u1eeb xung quanh c\u1ea7u dao DC (\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 k\u00e9o d\u00e0i h\u1ed3 quang DC) c\u00f3 th\u1ec3 c\u00f3 t\u00e1c \u0111\u1ed9ng ti\u00eau c\u1ef1c \u0111\u1ebfn h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t khe h\u1ed3 quang c\u1ee7a c\u1ea7u dao DC (\u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m m\u00e1t h\u1ed3 quang AC) v\u00e0 do \u0111\u00f3, c\u00f3 th\u1ec3 l\u00e0m ch\u1eadm th\u1eddi gian x\u00f3a t\u1ed5ng th\u1ec3 ho\u1eb7c t\u1ea1o ra s\u1ef1 c\u1ed1 kh\u00f4ng x\u00f3a \u0111\u01b0\u1ee3c m\u1ea1ch.<\/p>\n

Khi s\u1eed d\u1ee5ng MCB DC trong c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c ngo\u00e0i nh\u1eefng g\u00ec ch\u00fang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho (v\u00ed d\u1ee5: m\u1ea1ch AC), \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 x\u00e1c minh r\u1eb1ng c\u1ef1c t\u00ednh c\u1ee7a m\u1ea1ch ph\u00f9 h\u1ee3p v\u1edbi MCB. N\u1ebfu MCB \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t v\u1edbi c\u1ef1c t\u00ednh sai, n\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft b\u1ecb v\u00e0 thi\u1ec7t h\u1ea1i nghi\u00eam tr\u1ecdng do l\u1ed7i \u0111i\u1ec7n. V\u00ed d\u1ee5, l\u1eafp \u0111\u1eb7t m\u1ed9t MCB DC trong m\u1ed9t m\u1ea1ch AC v\u1edbi c\u1ef1c t\u00ednh ng\u01b0\u1ee3c s\u1ebd khi\u1ebfn c\u00e1c tr\u01b0\u1eddng t\u1eeb \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi MCB \u0111\u1ea9y h\u1ed3 quang theo h\u01b0\u1edbng sai trong n\u1eeda chu k\u1ef3 ng\u01b0\u1ee3c, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn thi\u1ec7t h\u1ea1i cho MCB ho\u1eb7c b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb n\u00e0o k\u1ebft n\u1ed1i v\u1edbi MCB.<\/p>\n

M\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t s\u1ea3n xu\u1ea5t c\u00e1c c\u1ea7u ch\u00ec \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 v\u00e0 ch\u1ee9ng nh\u1eadn cho c\u1ea3 AC v\u00e0 DC, ho\u1eb7c c\u00e1c c\u1ea7u ch\u00ec DC \u201ckh\u00f4ng ph\u00e2n c\u1ef1c\u201d \u00edt nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi h\u01b0\u1edbng d\u00f2ng \u0111i\u1ec7n, nh\u01b0ng nh\u1eefng s\u1ea3n ph\u1ea9m n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1eb7c bi\u1ec7t cho vi\u1ec7c s\u1eed d\u1ee5ng k\u00e9p. D\u00f2ng s\u1ea3n ph\u1ea9m HUYU c\u1ee7a ch\u00fang t\u00f4i, bao g\u1ed3m HUB9NEZ\u201180, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c \u1ee9ng d\u1ee5ng DC thu\u1ea7n t\u00fay \u2014 c\u00e1c m\u1ea3ng PV, ng\u00e2n h\u00e0ng pin, h\u1ed9p k\u1ebft h\u1ee3p DC \u2014 v\u00e0 mang ch\u1ee9ng nh\u1eadn TUV v\u00e0 UL \u0111\u1eb7c bi\u1ec7t cho d\u1ecbch v\u1ee5 DC. \u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea1ch AC, ch\u00fang t\u00f4i cung c\u1ea5p c\u00e1c c\u1ea7u ch\u00ec AC ti\u00eau chu\u1ea9n v\u00e0 MCCB \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u00e0 ch\u1ee9ng nh\u1eadn theo c\u00e1c ti\u00eau chu\u1ea9n AC \u00e1p d\u1ee5ng. Vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec \u0111\u00fang cho lo\u1ea1i d\u00f2ng \u0111i\u1ec7n l\u00e0 kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t g\u1ee3i \u00fd; \u0111\u00f3 l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a vi\u1ec7c b\u1ea3o v\u1ec7 m\u1ea1ch an to\u00e0n. \u0110\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 khung ch\u1ee9ng nh\u1eadn \u0111i\u1ec1u ch\u1ec9nh vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea7u ch\u00ec, b\u00e0i vi\u1ebft c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 MCB DC 32A<\/strong> gi\u1ea3i th\u00edch c\u00e1c ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m m\u00e0 c\u1ea3 c\u1ea7u ch\u00ec AC v\u00e0 DC ph\u1ea3i \u0111\u00e1p \u1ee9ng. c\u00e1c c\u1ea7u dao UL 489<\/a> AC MCB so v\u1edbi DC MCB: So s\u00e1nh t\u1eebng b\u00ean.<\/p>\n

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u1ed9t<\/h2>\n

kh\u00f4ng ch\u1ec9 l\u00e0 th\u1ea9m m\u1ef9. Ch\u00fang ph\u1ea3n \u00e1nh c\u00e1c tri\u1ebft l\u00fd thi\u1ebft k\u1ebf ho\u00e0n to\u00e0n kh\u00e1c nhau \u0111\u01b0\u1ee3c th\u00fac \u0111\u1ea9y b\u1edfi c\u00e1c y\u00eau c\u1ea7u ng\u1eaft h\u1ed3 quang kh\u00e1c nhau: AC MCB<\/strong> v\u00e0 m\u1ed9t MCB DC 32A<\/strong> T\u1eaft h\u1ed3 quang<\/p>\n\n\n\n\n\n\n\n\n\n\n
\u0110\u1eb7c \u0111i\u1ec3m<\/th>\nAC MCB<\/th>\nMCB DC 32A<\/th>\n<\/tr>\n<\/thead>\n
D\u1ef1a v\u00e0o vi\u1ec7c c\u1eaft d\u00f2ng \u0111i\u1ec7n t\u1ef1 nhi\u00ean; r\u00e3nh h\u1ed3 quang t\u00e1ch ra v\u00e0 l\u00e0m m\u00e1t h\u1ed3 quang<\/strong><\/td>\nPh\u1ea3i \u00e9p t\u1eaft h\u1ed3 quang b\u1eb1ng c\u00e1ch th\u1ed5i t\u1eeb tr\u01b0\u1eddng m\u1ea1nh h\u01a1n, \u0111\u01b0\u1eddng \u0111i h\u1ed3 quang d\u00e0i h\u01a1n v\u00e0 kho\u1ea3ng c\u00e1ch ti\u1ebfp x\u00fac r\u1ed9ng h\u01a1n<\/td>\nNh\u1ea1y c\u1ea3m v\u1edbi ph\u00e2n c\u1ef1c<\/td>\n<\/tr>\n
Kh\u00f4ng ph\u00e2n c\u1ef1c; h\u01b0\u1edbng d\u00f2ng \u0111i\u1ec7n \u0111\u1ea3o ng\u01b0\u1ee3c m\u1ed7i n\u1eeda chu k\u1ef3<\/strong><\/td>\nTh\u01b0\u1eddng nh\u1ea1y c\u1ea3m v\u1edbi ph\u00e2n c\u1ef1c; ph\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi ph\u00e2n c\u1ef1c \u0111\u00fang \u0111\u1ec3 ng\u1eaft an to\u00e0n<\/td>\nKho\u1ea3ng c\u00e1ch ti\u1ebfp x\u00fac<\/td>\n<\/tr>\n
Nh\u1ecf h\u01a1n; \u0111\u1ee7 v\u00ec c\u00f3 s\u1ef1 h\u1ed7 tr\u1ee3 c\u1eaft d\u00f2ng \u0111i\u1ec7n<\/strong><\/td>\nL\u1edbn h\u01a1n; c\u1ea7n thi\u1ebft \u0111\u1ec3 k\u00e9o d\u00e0i h\u1ed3 quang \u0111\u1ebfn \u0111i\u1ec7n \u00e1p t\u1eaft<\/td>\n\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec3n h\u00ecnh<\/td>\n<\/tr>\n
230\/400V AC, l\u00ean \u0111\u1ebfn 690V AC cho m\u1ed9t s\u1ed1 MCCB<\/strong><\/td>\n12V \u0111\u1ebfn 1200V DC, t\u00f9y thu\u1ed9c v\u00e0o c\u1ef1c v\u00e0 k\u1ebft n\u1ed1i chu\u1ed7i<\/td>\nNg\u1eaft t\u1eeb t\u00ednh<\/td>\n<\/tr>\n
\u0110\u01b0\u1ee3c \u0111\u1eb7t cho d\u00f2ng kh\u1edfi \u0111\u1ed9ng c\u1ee5 th\u1ec3 AC (bi\u1ebfn \u00e1p, \u0111\u1ed9ng c\u01a1)<\/strong><\/td>\n\u0110\u01b0\u1ee3c \u0111\u1eb7t cho d\u00f2ng kh\u1edfi \u0111\u1ed9ng c\u1ee5 th\u1ec3 DC (t\u1ee5 \u0111i\u1ec7n inverter, s\u1ea1c pin)<\/td>\nIEC 60898, UL 489, CSA C22.2<\/td>\n<\/tr>\n
Ti\u00eau chu\u1ea9n \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\nIEC 60947\u20112 Ph\u1ee5 l\u1ee5c P, UL 489B, UL 1077 DC<\/td>\nNh\u1eefng kh\u00e1c bi\u1ec7t n\u00e0y c\u00f3 \u00fd ngh\u0129a trong th\u1ef1c t\u1ebf. M\u1ed9t AC MCB \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t tr\u00ean m\u1ea1ch pin DC c\u00f3 th\u1ec3 kh\u00f4ng ng\u1eaft \u0111\u01b0\u1ee3c l\u1ed7i v\u00ec h\u1ed3 quang kh\u00f4ng bao gi\u1edd t\u1eaft. M\u1ed9t DC MCB \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t tr\u00ean t\u1ea3i AC c\u00f3 th\u1ec3 ng\u1eaft \u0111\u01b0\u1ee3c m\u1ed9t v\u00e0i l\u1ed7i \u0111\u1ea7u ti\u00ean nh\u01b0ng s\u1ebd suy gi\u1ea3m nhanh ch\u00f3ng khi c\u00e1c n\u1eeda chu k\u1ef3 \u0111\u1ea3o ng\u01b0\u1ee3c ch\u1ed1ng l\u1ea1i thi\u1ebft k\u1ebf t\u1eaft h\u1ed3 quang c\u1ee7a n\u00f3. C\u1ea3 hai t\u00ecnh hu\u1ed1ng \u0111\u1ec1u kh\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c trong m\u1ed9t thi\u1ebft b\u1ecb an to\u00e0n.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

H\u1eadu qu\u1ea3 c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t DC MCB tr\u00ean m\u1ed9t m\u1ea1ch AC c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua kinh nghi\u1ec7m c\u1ee7a m\u1ed9t nh\u00e0 l\u1eafp \u0111\u1eb7t n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi \u1edf Arizona. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, tr\u01b0\u1eddng th\u1ed5i t\u1eeb t\u00ednh c\u00f3 th\u1ec3 khi\u1ebfn h\u1ed3 quang b\u1ecb \u0111\u1ea9y theo h\u01b0\u1edbng sai trong n\u1eeda chu k\u1ef3 \u0111\u1ea3o ng\u01b0\u1ee3c do vi\u1ec7c l\u1eafp \u0111\u1eb7t sai c\u1ea7u ch\u00ec v\u00e0o m\u1ed9t m\u1ea1ch AC. Tr\u01b0\u1edbc khi \u0111i\u1ec1u n\u00e0y x\u1ea3y ra, c\u1ea7u ch\u00ec c\u00f3 th\u1ec3 \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang v\u00e0 ng\u1eaft \u0111\u01b0\u1ee3c l\u1ed7i; tuy nhi\u00ean, do s\u1ef1 suy gi\u1ea3m c\u1ee7a c\u00e1c ti\u1ebfp \u0111i\u1ec3m g\u00e2y ra b\u1edfi l\u1ed7i ban \u0111\u1ea7u, c\u1ea7u ch\u00ec c\u00f3 th\u1ec3 s\u1ebd kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng trong l\u1ed7i ti\u1ebfp theo v\u00e0 c\u00f3 th\u1ec3 g\u00e2y ra thi\u1ec7t h\u1ea1i nghi\u00eam tr\u1ecdng.<\/p>\n

\"\u0110i\u1ec1u<\/p>\n

\u0110i\u1ec1u g\u00ec x\u1ea3y ra khi s\u1eed d\u1ee5ng c\u1ea7u dao sai<\/h2>\n

H\u1eadu qu\u1ea3 c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t MCB DC tr\u00ean m\u1ed9t m\u1ea1ch AC c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua kinh nghi\u1ec7m c\u1ee7a m\u1ed9t ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi \u1edf Arizona. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, tr\u01b0\u1eddng t\u1eeb tr\u01b0\u1eddng c\u00f3 th\u1ec3 khi\u1ebfn h\u1ed3 quang b\u1ecb \u0111\u1ea9y theo h\u01b0\u1edbng sai trong n\u1eeda chu k\u1ef3 ng\u01b0\u1ee3c do vi\u1ec7c l\u1eafp \u0111\u1eb7t sai c\u1ea7u dao v\u00e0o m\u1ea1ch AC. Tr\u01b0\u1edbc m\u1ed7i s\u1ef1 c\u1ed1 x\u1ea3y ra, c\u1ea7u dao c\u00f3 th\u1ec3 \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang c\u00e1ch v\u00e0 x\u00f3a b\u1ecf s\u1ef1 c\u1ed1; tuy nhi\u00ean, do s\u1ef1 suy gi\u1ea3m c\u1ee7a c\u00e1c ti\u1ebfp \u0111i\u1ec3m g\u00e2y ra b\u1edfi s\u1ef1 c\u1ed1 ban \u0111\u1ea7u, c\u1ea7u dao c\u00f3 th\u1ec3 s\u1ebd th\u1ea5t b\u1ea1i trong s\u1ef1 c\u1ed1 ti\u1ebfp theo v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y ra thi\u1ec7t h\u1ea1i th\u1ea3m kh\u1ed1c.<\/p>\n

Vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t MCB AC trong m\u1ed9t m\u1ea1ch DC c\u00f3 ngh\u0129a l\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec3m giao nhau b\u1eb1ng kh\u00f4ng \u0111\u1ec3 h\u1ed3 quang t\u1eaft theo c\u00e1ch t\u1ef1 nhi\u00ean c\u1ee7a n\u00f3. Khe h\u1ed3 quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u1ed9t h\u1ed3 quang s\u1ee5p \u0111\u1ed5 hai l\u1ea7n m\u1ed7i chu k\u1ef3, c\u00f3 ngh\u0129a l\u00e0 n\u00f3 kh\u00f4ng th\u1ec3 l\u00e0m m\u00e1t \u0111\u1ee7 cho h\u1ed3 quang DC li\u00ean t\u1ee5c s\u1ebd t\u1ed3n t\u1ea1i c\u0169ng nh\u01b0 l\u00e0m qu\u00e1 nhi\u1ec7t c\u00e1c ti\u1ebfp \u0111i\u1ec3m d\u1eabn \u0111\u1ebfn vi\u1ec7c c\u1ea7u dao kh\u00f4ng ng\u1eaft d\u00f2ng \u0111i\u1ec7n ho\u1eb7c b\u1eaft l\u1eeda. Nh\u1eefng h\u1ec7 qu\u1ea3 c\u1ee7a \u0111i\u1ec1u n\u00e0y kh\u00f4ng ch\u1ec9 l\u00e0 l\u00fd thuy\u1ebft; ch\u00fang \u0111\u01b0\u1ee3c ghi ch\u00e9p kh\u00f4ng ch\u1ec9 trong c\u00e1c b\u00e1o c\u00e1o th\u1eed nghi\u1ec7m s\u1ea3n ph\u1ea9m, m\u00e0 c\u00f2n trong c\u00e1c cu\u1ed9c \u0111i\u1ec1u tra th\u1ea5t b\u1ea1i th\u1ef1c t\u1ebf. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1ch c\u00e1c c\u1ea7u dao t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 kh\u00e1c trong m\u1ed9t h\u1ec7 th\u1ed1ng, s\u1ef1 so s\u00e1nh c\u1ee7a ch\u00fang t\u00f4i <\/span>c\u1ea7u dao so v\u1edbi b\u1ed9 b\u1ea3o v\u1ec7 qu\u00e1 \u00e1p<\/a> gi\u1ea3i th\u00edch chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 nhi\u1ec1u l\u1edbp m\u00e0 m\u1ed7i l\u1eafp \u0111\u1eb7t c\u1ea7n c\u00f3.<\/span><\/p>\n

C\u1ea7u dao \u0110\u01b0\u1ee3c \u0110\u00e1nh gi\u00e1 K\u00e9p: Ngo\u1ea1i l\u1ec7 cho Quy t\u1eafc<\/h2>\n

M\u1ed9t s\u1ed1 c\u1ea7u dao nh\u1ecf c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi c\u1ea3 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC) c\u0169ng nh\u01b0 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC). Ch\u00fang kh\u00f4ng ch\u1ec9 l\u00e0 nh\u1eefng c\u1ea7u dao mini d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u th\u00f4ng th\u01b0\u1eddng v\u1edbi m\u1ed9t nh\u00e3n d\u00e1n cho bi\u1ebft r\u1eb1ng ch\u00fang \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m v\u00e0 \u0111\u00e1nh gi\u00e1 \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi m\u1ed9t h\u1ec7 th\u1ed1ng d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u. C\u00e1c c\u1ea7u dao mini \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho \u0111\u00e1nh gi\u00e1 k\u00e9p \u0111\u00e3 tr\u1ea3i qua c\u00e1c th\u1eed nghi\u1ec7m ri\u00eang bi\u1ec7t c\u1ee5 th\u1ec3 cho \u1ee9ng d\u1ee5ng AC ho\u1eb7c DC (t\u1ee9c l\u00e0, \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m theo c\u1ea3 hai c\u00e1ch) v\u00e0 sau \u0111\u00f3 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn b\u1edfi m\u1ed9t c\u01a1 quan th\u1eed nghi\u1ec7m th\u00edch h\u1ee3p (ch\u1eb3ng h\u1ea1n nh\u01b0 UL) \u0111\u1ec3 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng theo nh\u01b0 d\u1ef1 \u0111\u1ecbnh d\u01b0\u1edbi c\u1ea3 hai lo\u1ea1i \u0111i\u1ec1u ki\u1ec7n m\u1ea1ch. Nh\u00e3n hi\u1ec7u c\u1ee7a m\u1ed9t c\u1ea7u dao mini \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 k\u00e9p s\u1ebd ch\u1ec9 ra c\u00e1c \u0111\u00e1nh gi\u00e1 k\u00e9p c\u1ee7a c\u1ea7u dao (v\u00ed d\u1ee5: 250 volt AC \/ 60 volt DC cho m\u1ed7i c\u1ef1c) ngo\u00e0i vi\u1ec7c ch\u1ec9 \u0111\u1ecbnh r\u1eb1ng c\u1ea7u dao \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m theo c\u00e1c ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng cho m\u1ed7i \u1ee9ng d\u1ee5ng.<\/p>\n

N\u1ebfu b\u1ea1n l\u00e0m vi\u1ec7c tr\u00ean m\u1ed9t d\u1ef1 \u00e1n s\u1eed d\u1ee5ng c\u1ea3 m\u1ea1ch d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC) v\u00e0 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi v\u1edbi m\u1ed9t b\u1ed9 bi\u1ebfn t\u1ea7n AC v\u00e0 m\u1ed9t ng\u00e2n h\u00e0ng pin \u2014 b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u1ea7u dao \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 k\u00e9p \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a m\u1ecdi th\u1ee9. Ch\u1ec9 c\u1ea7n \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c \u0111\u00e1nh gi\u00e1 v\u1ec1 \u0111i\u1ec7n \u00e1p v\u00e0 kh\u1ea3 n\u0103ng ng\u1eaft c\u1ee7a c\u1ea7u dao \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 k\u00e9p l\u00e0 ph\u00f9 h\u1ee3p cho c\u1ea3 hai \u1ee9ng d\u1ee5ng. C\u00e1c c\u1ea7u dao \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 k\u00e9p n\u00ean \u0111\u01b0\u1ee3c coi l\u00e0 ngo\u1ea1i l\u1ec7 ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 quy t\u1eafc. \u0110\u1eebng gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng c\u00e1c c\u1ea7u dao \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 DC ho\u1eb7c AC l\u00e0 h\u1ee3p l\u1ec7 \u0111\u1ec3 s\u1eed d\u1ee5ng theo h\u01b0\u1edbng ng\u01b0\u1ee3c l\u1ea1i m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 ch\u1ea5p thu\u1eadn v\u00e0 c\u00e1c d\u1ea5u hi\u1ec7u ch\u1ee9ng nh\u1eadn c\u1ee5 th\u1ec3 c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t r\u00f5 r\u00e0ng ch\u1ec9 ra vi\u1ec7c s\u1eed d\u1ee5ng ph\u00f9 h\u1ee3p cho c\u1ea3 hai lo\u1ea1i d\u00f2ng \u0111i\u1ec7n.<\/p>\n

\"L\u1ef1a<\/p>\n

L\u1ef1a ch\u1ecdn C\u1ea7u dao Ph\u00f9 h\u1ee3p cho C\u00e1c L\u1eafp \u0111\u1eb7t AC\/DC K\u1ebft h\u1ee3p<\/h2>\n

M\u1ed9t gi\u1ea3i ph\u00e1p l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi ti\u00eau chu\u1ea9n s\u1ebd bao g\u1ed3m c\u1ea3 m\u1ea1ch \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) v\u00e0 m\u1ea1ch \u0111i\u1ec7n xoay chi\u1ec1u (AC). C\u00e1c m\u1ea1ch DC c\u00f3 th\u1ec3 bao g\u1ed3m t\u1ea5m quang \u0111i\u1ec7n (PV), pin v\u00e0 b\u1ed9 k\u1ebft h\u1ee3p DC; trong khi c\u00e1c m\u1ea1ch AC c\u00f3 th\u1ec3 bao g\u1ed3m \u0111\u1ea7u ra c\u1ee7a b\u1ed9 bi\u1ebfn t\u1ea7n (t\u1eeb b\u1ed9 bi\u1ebfn t\u1ea7n \u0111\u1ebfn t\u1ea3i AC), b\u1ea3ng t\u1ea3i d\u1ef1 ph\u00f2ng v\u00e0 k\u1ebft n\u1ed1i v\u1edbi l\u01b0\u1edbi \u0111i\u1ec7n. M\u1ed7i lo\u1ea1i m\u1ea1ch y\u00eau c\u1ea7u m\u1ed9t c\u1ea7u ch\u00ec \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c theo lo\u1ea1i d\u00f2ng \u0111i\u1ec7n, \u0111i\u1ec7n \u00e1p v\u00e0 kh\u1ea3 n\u0103ng ng\u1eaft c\u1ee7a m\u1ea1ch c\u1ee5 th\u1ec3 \u0111\u00f3. C\u00e1c m\u1ea1ch DC s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c DC tu\u00e2n th\u1ee7 ch\u1ee9ng nh\u1eadn UL 489B ho\u1eb7c IEC 60947-2 Ph\u1ee5 l\u1ee5c P; trong khi c\u00e1c m\u1ea1ch AC s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c AC \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn b\u1edfi UL 489 ho\u1eb7c IEC 60898. C\u00e1c c\u1ea7u ch\u00ec n\u00e0y kh\u00f4ng th\u1ec3 thay th\u1ebf cho nhau.<\/p>\n

Khi ch\u1ecdn m\u1ed9t MCB DC cho \u1ee9ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi ho\u1eb7c pin, h\u00e3y ki\u1ec3m tra \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n \u00e1p DC, s\u1ebd \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea l\u00e0 \u0111\u1ecbnh m\u1ee9c ri\u00eang cho t\u1eebng c\u1ef1c ho\u1eb7c l\u00e0 \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng t\u1ed1i \u0111a cho nhi\u1ec1u c\u1ef1c \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i n\u1ed1i ti\u1ebfp. Ti\u1ebfp theo, ki\u1ec3m tra \u0111\u1ecbnh m\u1ee9c kh\u1ea3 n\u0103ng ng\u1eaft (kAIC) (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 kh\u1ea3 n\u0103ng ng\u1eaft d\u00f2ng ng\u1eafn m\u1ea1ch) so v\u1edbi l\u01b0\u1ee3ng d\u00f2ng l\u1ed7i t\u1ea1i \u0111\u1ea7u ra c\u1ee7a ng\u00e2n h\u00e0ng pin. Cu\u1ed1i c\u00f9ng, n\u1ebfu c\u1ea7u ch\u00ec nh\u1ea1y c\u1ea3m v\u1edbi c\u1ef1c, h\u00e3y ki\u1ec3m tra r\u1eb1ng n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u \u0111\u00fang cho c\u1ef1c. \u0110\u1ed1i v\u1edbi ph\u00eda AC c\u1ee7a l\u1eafp \u0111\u1eb7t, h\u00e3y tu\u00e2n theo c\u00e1c quy t\u1eafc k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n d\u1ef1a tr\u00ean vi\u1ec7c t\u00ednh to\u00e1n t\u1ea3i. H\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <\/span>k\u00edch th\u01b0\u1edbc c\u1ea7u dao b\u1ea1n c\u1ea7n<\/a> h\u01b0\u1edbng d\u1eabn c\u00e1ch t\u00ednh to\u00e1n cho c\u1ea3 t\u1ea3i chung v\u00e0 t\u1ea3i \u0111\u1ed9ng c\u01a1.<\/span><\/p>\n

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

Ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng MCB DC trong c\u00e1c m\u1ea1ch AC kh\u00f4ng?<\/h3>\n

Kh\u00f4ng s\u1eed d\u1ee5ng MCB DC ti\u00eau chu\u1ea9n v\u1edbi m\u1ea1ch AC ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng AC kh\u00e1c. C\u00e1c c\u1ea7u ch\u00ec nh\u01b0 v\u1eady c\u00f3 c\u01a1 ch\u1ebf d\u1eadp t\u1eaft h\u1ed3 quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi \u0111i\u1ec7n \u00e1p DC v\u00e0 do \u0111\u00f3, kh\u00f4ng th\u1ec3 ng\u1eaft \u0111i\u1ec7n \u00e1p AC m\u1ed9t c\u00e1ch an to\u00e0n. B\u1ea3o v\u1ec7 t\u1eeb t\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng k\u1ebft h\u1ee3p v\u1edbi tr\u01b0\u1eddng th\u1ed5i ra v\u00e0 thi\u1ebft k\u1ebf nh\u1ea1y c\u1ea3m v\u1edbi c\u1ef1c, c\u00f3 th\u1ec3 khi\u1ebfn m\u1ed9t l\u1ed7i AC kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea7u ch\u00ec x\u00f3a b\u1ecf. Th\u1eddi \u0111i\u1ec3m duy nh\u1ea5t b\u1ea1n n\u00ean s\u1eed d\u1ee5ng MCB DC tr\u00ean m\u1ed9t m\u1ea1ch AC l\u00e0 n\u1ebfu nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e3 r\u00f5 r\u00e0ng \u0111\u1ecbnh m\u1ee9c v\u00e0 ch\u1ee9ng nh\u1eadn MCB cho c\u1ea3 d\u1ecbch v\u1ee5 AC v\u00e0 DC.<\/p>\n

MCB c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho DC kh\u00f4ng?<\/h3>\n

C\u1ea7u ch\u00ec mini xoay chi\u1ec1u (MCB) c\u00f3 th\u1ec3 x\u1eed l\u00fd t\u1ea3i AC m\u1ed9t c\u00e1ch an to\u00e0n. Tuy nhi\u00ean, n\u1ebfu MCB ch\u01b0a \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m, ch\u1ee9ng nh\u1eadn ho\u1eb7c \u0111\u1ecbnh m\u1ee9c cho vi\u1ec7c s\u1eed d\u1ee5ng DC, n\u00f3 kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ng\u1eaft DC m\u1ed9t c\u00e1ch an to\u00e0n. L\u00fd do m\u1ed9t \u0111i\u1ec3m c\u1eaft d\u00f2ng x\u1ea3y ra trong c\u00e1c h\u1ec7 th\u1ed1ng AC l\u00e0 do d\u1ea1ng s\u00f3ng h\u00ecnh sin \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c h\u1ec7 th\u1ed1ng AC. B\u1edfi v\u00ec kh\u00f4ng c\u00f3 \u0111i\u1ec3m c\u1eaft d\u00f2ng v\u1edbi DC, MCB kh\u00f4ng th\u1ec3 d\u1eadp t\u1eaft h\u1ed3 quang v\u1edbi c\u00e1c ch\u1eadu h\u1ed3 quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho AC, do \u0111\u00f3 kh\u00f4ng th\u1ec3 ng\u1eaft d\u00f2ng trong m\u1ed9t \u1ee9ng d\u1ee5ng DC. V\u00ec v\u1ea5n \u0111\u1ec1 n\u00e0y, c\u1ea7u ch\u00ec ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf, th\u1eed nghi\u1ec7m v\u00e0 \u0111\u00e1nh d\u1ea5u c\u1ee5 th\u1ec3 cho \u1ee9ng d\u1ee5ng DC v\u1edbi \u0111i\u1ec7n \u00e1p DC v\u00e0 kh\u1ea3 n\u0103ng ng\u1eaft \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh.<\/p>\n

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

S\u1ef1 t\u1eaft h\u1ed3 quang l\u00e0 m\u1ed9t trong nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa c\u1ea3 hai lo\u1ea1i B\u1ed9 Ng\u1eaft M\u1ea1ch Miniature (MCB). M\u1ed9t B\u1ed9 Ng\u1eaft M\u1ea1ch (AC) \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 t\u1eaft h\u1ed3 quang c\u1ee7a n\u00f3 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111i\u1ec3m kh\u00f4ng d\u00f2ng t\u1ef1 nhi\u00ean trong m\u1ed7i n\u1eeda chu k\u1ef3. M\u1ed9t B\u1ed9 Ng\u1eaft M\u1ea1ch (DC) ph\u1ea3i \u00e9p bu\u1ed9c s\u1ef1 t\u1eaft h\u1ed3 quang c\u1ee7a n\u00f3 v\u1edbi m\u1ed9t tr\u01b0\u1eddng t\u1eeb tr\u01b0\u1eddng th\u1ed5i m\u1ea1nh h\u01a1n nhi\u1ec1u, kho\u1ea3ng c\u00e1ch ti\u1ebfp x\u00fac r\u1ed9ng h\u01a1n, v\u00e0 m\u1ed9t thi\u1ebft k\u1ebf b\u00ean trong c\u1ee7a ch\u1eadu h\u1ed3 quang cho ph\u00e9p l\u00e0m m\u00e1t h\u1ed3 quang sau khi n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1eaft. C\u00e1c MCB \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng v\u1edbi DC s\u1ebd th\u01b0\u1eddng nh\u1ea1y c\u1ea3m v\u1edbi c\u1ef1c, trong khi c\u00e1c MCB AC kh\u00f4ng c\u00f3 y\u00eau c\u1ea7u n\u00e0y. C\u0169ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t trong c\u00e1c m\u1ee9c \u0111i\u1ec7n \u00e1p, ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m, v\u00e0 \u0111\u1eb7c t\u00ednh nh\u1ea3y gi\u1eefa c\u1ea3 hai lo\u1ea1i MCB.<\/p>\n

C\u00e1c b\u1ed9 ng\u1eaft m\u1ea1ch DC v\u00e0 AC c\u00f3 gi\u1ed1ng nhau kh\u00f4ng?<\/h3>\n

C\u1ea7u dao \u0111i\u1ec7n DC v\u00e0 AC kh\u00e1c nhau. M\u1ed7i lo\u1ea1i c\u00f3 ph\u01b0\u01a1ng ph\u00e1p ri\u00eang bi\u1ec7t \u0111\u1ec3 ng\u1eaft h\u1ed3 quang; ch\u00fang c\u0169ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m kh\u00e1c nhau v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng an to\u00e0n \u1edf c\u00e1c m\u1ee9c \u0111i\u1ec7n \u00e1p v\u00e0 kh\u1ea3 n\u0103ng ng\u1eaft kh\u00e1c nhau. M\u1ed9t c\u1ea7u dao ch\u1ec9 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ng\u1eaft d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) s\u1ebd kh\u00f4ng th\u1ec3 ng\u1eaft an to\u00e0n d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u (AC), do \u0111\u00f3 c\u1ea7u dao ch\u1ec9 d\u00e0nh ri\u00eang cho AC s\u1ebd kh\u00f4ng h\u1ea1n ch\u1ebf \u0111\u01b0\u1ee3c nguy hi\u1ec3m n\u1ebfu c\u1ed1 g\u1eafng s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 ng\u1eaft d\u00f2ng \u0111i\u1ec7n g\u1ed3m DC; ngo\u1ea1i l\u1ec7 l\u00e0 trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e3 ch\u1ec9 \u0111\u1ecbnh v\u00e0 th\u1eed nghi\u1ec7m thi\u1ebft b\u1ecb \u0111\u00f3 ph\u00f9 h\u1ee3p cho c\u1ea3 hai \u1ee9ng d\u1ee5ng.<\/p>\n

C\u00e2u h\u1ecfi v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch m\u1ea1ch DC MCB AC<\/strong> l\u00e0 n\u01a1i c\u00e1c nguy\u00ean t\u1eafc k\u1ef9 thu\u1eadt \u0111\u01b0a ra c\u00e2u tr\u1ea3 l\u1eddi r\u00f5 r\u00e0ng: c\u1ea7u dao ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi lo\u1ea1i d\u00f2ng \u0111i\u1ec7n. M\u1ed9t MCB DC \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 \u00e9p h\u1ed3 quang t\u1eaft trong \u0111i\u1ec1u ki\u1ec7n d\u00f2ng \u0111i\u1ec7n \u1ed5n \u0111\u1ecbnh. M\u1ed9t MCB AC \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1eadn d\u1ee5ng \u0111i\u1ec3m kh\u00f4ng t\u1ef1 nhi\u00ean c\u1ee7a d\u00f2ng \u0111i\u1ec7n l\u00e0m ph\u1ea7n l\u1edbn c\u00f4ng vi\u1ec7c. S\u1eed d\u1ee5ng m\u1ed9t lo\u1ea1i trong m\u1ea1ch c\u1ee7a lo\u1ea1i kia s\u1ebd l\u00e0m m\u1ea5t \u0111i s\u1ef1 b\u1ea3o v\u1ec7 m\u00e0 c\u1ea7u dao \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ec3 cung c\u1ea5p. Trong m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u2014 d\u00f9 l\u00e0 b\u1ea3ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng, h\u1ed9p k\u1ebft h\u1ee3p n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi, hay t\u1ee7 \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p \u2014 nh\u00e3n tr\u00ean c\u1ea7u dao cho bi\u1ebft v\u1ecb tr\u00ed s\u1eed d\u1ee5ng ph\u00f9 h\u1ee3p. \u0110\u1ecbnh m\u1ee9c DC ch\u1ec9 d\u00e0nh cho m\u1ea1ch DC. \u0110\u1ecbnh m\u1ee9c AC ch\u1ec9 d\u00e0nh cho m\u1ea1ch AC. C\u1ea7u dao hi\u1ebfm c\u00f3 \u0111\u1ecbnh m\u1ee9c k\u00e9p mang c\u1ea3 hai k\u00fd hi\u1ec7u v\u00e0 ch\u1ee9ng nh\u1eadn. Tu\u00e2n th\u1ee7 nh\u00e3n \u0111\u00f3 l\u00e0 c\u00e1ch \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o khi x\u1ea3y ra s\u1ef1 c\u1ed1, c\u1ea7u dao th\u1ef1c hi\u1ec7n \u0111\u00fang ch\u1ee9c n\u0103ng c\u1ee7a n\u00f3: m\u1edf an to\u00e0n, x\u00f3a s\u1ef1 c\u1ed1 v\u00e0 b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng ph\u00eda sau.<\/p>","protected":false},"excerpt":{"rendered":"

A solar installer located in Arizona contacted our technical support department regarding a challenge with his installation that had halted execution of the entire project. A small battery energy storage system was ready for commissioning and the installer required a 63 amp circuit breaker to protect the AC output of the inverter. The installer had […]<\/p>\n","protected":false},"author":1,"featured_media":2746,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/2745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/comments?post=2745"}],"version-history":[{"count":1,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/2745\/revisions"}],"predecessor-version":[{"id":2751,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/2745\/revisions\/2751"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media\/2746"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media?parent=2745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/categories?post=2745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/tags?post=2745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}