{"id":4620,"date":"2026-10-27T13:40:28","date_gmt":"2026-10-27T13:40:28","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=4620"},"modified":"2026-10-27T13:40:30","modified_gmt":"2026-10-27T13:40:30","slug":"when-should-you-use-a-type-b-rccb","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/vi\/blog\/when-should-you-use-a-type-b-rccb\/","title":{"rendered":"Khi N\u00e0o B\u1ea1n N\u00ean S\u1eed D\u1ee5ng RCCB Lo\u1ea1i B?"},"content":{"rendered":"<p>\u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n bi\u1ebft l\u00e0 AC RCCB kh\u00f4ng ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c l\u1ed7i do b\u1ed9 bi\u1ebfn t\u1ea7n hi\u1ec7n \u0111\u1ea1i g\u00e2y ra. S\u1ef1 ph\u00e2n bi\u1ec7t gi\u1eefa bi\u1ebft v\u00e0 kh\u00f4ng bi\u1ebft \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng v\u00ec m\u1ed9t \u0111i\u1ec3m s\u1ea1c c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng ph\u00eda sau m\u1ed9t RCD kh\u00f4ng l\u00e0m g\u00ec trong khi c\u00f3 ng\u01b0\u1eddi b\u1ecb \u0111i\u1ec7n gi\u1eadt.<\/p>\n<p>Lo\u1ea1i B \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u1ea5p \u0111\u1ea7y kho\u1ea3ng tr\u1ed1ng n\u00e0y, v\u00e0 \u0111\u00e2y l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn c\u1ea7n bi\u1ebft khi n\u00e0o s\u1eed d\u1ee5ng n\u00f3 thay v\u00ec m\u1ed9t v\u1ea5n \u0111\u1ec1 chuy\u00ean gia.<\/p>\n<blockquote><p>T\u00f3m t\u1eaft: \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ee9c n\u0103ng \u0111\u00fang c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng t\u1ea1o ra d\u00f2ng d\u01b0 DC \u1ed5n \u0111\u1ecbnh, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 s\u1ea1c EV, bi\u1ebfn t\u1ea7n PV, l\u01b0u tr\u1eef pin, bi\u1ebfn t\u1ea7n t\u1ea7n s\u1ed1 bi\u1ebfn \u0111\u1ed5i \u0111\u1ea7u v\u00e0o m\u1ed9t pha v\u00e0 c\u00e1c k\u1ebft h\u1ee3p c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb n\u00e0y v\u1edbi c\u00e1c lo\u1ea1i t\u1ea3i truy\u1ec1n th\u1ed1ng, n\u00ean s\u1eed d\u1ee5ng RCCB lo\u1ea1i B. \u0110i\u1ec1u n\u00e0y l\u00e0m cho RCCB c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n d\u00f2ng d\u01b0 AC v\u00e0 c\u1ea3 d\u00f2ng d\u01b0 DC \u1ed5n \u0111\u1ecbnh v\u00e0 xung, trong khi RCCB lo\u1ea1i A ch\u1ec9 ghi nh\u1eadn d\u00f2ng d\u01b0 DC xung v\u00e0 lo\u1ea1i AC ch\u1ec9 d\u00f2ng AC h\u00ecnh sin. S\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a d\u00f2ng DC \u1ed5n \u0111\u1ecbnh (ngay c\u1ea3 \u1edf m\u1ee9c th\u1ea5p v\u00e0i mA) c\u00f3 th\u1ec3 khi\u1ebfn c\u00e1c lo\u1ea1i A v\u00e0 C kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, do \u0111\u00f3 lo\u1ea1i B l\u00e0 l\u1ef1a ch\u1ecdn duy nh\u1ea5t kh\u1ea3 thi.<\/p><\/blockquote>\n<h2>Ti\u00eau chu\u1ea9n \u0110\u1ecbnh ngh\u0129a C\u00e1c Lo\u1ea1i<\/h2>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i<\/th>\n<th>Ph\u00e1t hi\u1ec7n<\/th>\n<th>M\u00f9 v\u1edbi<\/th>\n<th>\u1ee8ng d\u1ee5ng \u0111i\u1ec3n h\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>AC<\/td>\n<td>D\u00f2ng d\u01b0 AC h\u00ecnh sin<\/td>\n<td>D\u00f2ng DC xung v\u00e0 m\u01b0\u1ee3t<\/td>\n<td>M\u1ea1ch \u0111i\u1ec7n tr\u1edf \u0111\u01a1n gi\u1ea3n v\u00e0 chi\u1ebfu s\u00e1ng<\/td>\n<\/tr>\n<tr>\n<td>A<\/td>\n<td>AC c\u1ed9ng v\u1edbi DC xung<\/td>\n<td>DC m\u01b0\u1ee3t<\/td>\n<td>M\u1ea1ch \u0111i\u1ec7n d\u00e2n d\u1ee5ng v\u00e0 th\u01b0\u01a1ng m\u1ea1i chung, \u0111i\u1ec7n t\u1eed v\u1edbi b\u1ed9 ch\u1ec9nh l\u01b0u<\/td>\n<\/tr>\n<tr>\n<td>F<\/td>\n<td>D\u00f2ng d\u01b0 AC, DC xung v\u00e0 t\u1ea7n s\u1ed1 h\u1ed7n h\u1ee3p<\/td>\n<td>DC m\u01b0\u1ee3t tr\u00ean ng\u01b0\u1ee1ng ph\u00e1t hi\u1ec7n<\/td>\n<td>Bi\u1ebfn t\u1ea7n m\u1ed9t pha, m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb<\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>AC, DC xung v\u00e0 DC m\u01b0\u1ee3t<\/td>\n<td>Kh\u00f4ng ph\u00e1t hi\u1ec7n d\u00f2ng d\u01b0<\/td>\n<td>S\u1ea1c EV, PV, VFD, h\u1ec7 th\u1ed1ng pin<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110\u1ecbnh ngh\u0129a c\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb theo ti\u00eau chu\u1ea9n IEC 60755. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa lo\u1ea1i B v\u00e0 c\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb kh\u00e1c n\u1eb1m \u1edf ph\u1ea7n t\u1eed c\u1ea3m bi\u1ebfn, ph\u1ea3n \u1ee9ng v\u1edbi d\u00f2ng d\u01b0 m\u1ed9t chi\u1ec1u (DC) kh\u00f4ng \u0111\u1ea3o chi\u1ec1u, \u0111i\u1ec1u m\u00e0 bi\u1ebfn \u00e1p AC kh\u00f4ng l\u00e0m \u0111\u01b0\u1ee3c, v\u00ec d\u00f2ng m\u1ed9t chi\u1ec1u (DC) g\u00e2y b\u00e3o h\u00f2a l\u00f5i.<\/p>\n<p>B\u00e3o h\u00f2a n\u00e0y l\u00e0 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng th\u1ef1c s\u1ef1. Bi\u1ebfn d\u00f2ng d\u01b0 trong thi\u1ebft b\u1ecb lo\u1ea1i AC n\u00ean \u0111\u01b0\u1ee3c hi\u1ec3u nh\u01b0 m\u1ed9t l\u00f5i t\u1eeb. N\u00f3 ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a th\u00e0nh ph\u1ea7n DC m\u01b0\u1ee3t, l\u00e0m n\u00f3 b\u00e3o h\u00f2a, v\u00e0 khi \u0111\u00e3 b\u00e3o h\u00f2a, l\u00f5i ng\u1eebng ph\u1ea3n \u1ee9ng v\u1edbi d\u00f2ng d\u01b0 AC tr\u00ean \u0111\u00f3.<\/p>\n<h2>C\u00e1c T\u1ea3i Y\u00eau C\u1ea7u N\u00f3<\/h2>\n<p>N\u0103m \u1ee9ng d\u1ee5ng bao g\u1ed3m c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt lo\u1ea1i B kh\u00e1c nhau, v\u00e0 ch\u00fang \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng DC m\u01b0\u1ee3t v\u00ec nhi\u1ec1u l\u00fd do.<\/p>\n<ul>\n<li><span style=\"color: #ff0000;\">S\u1ea1c EV.<\/span> Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, b\u1ed9 s\u1ea1c tr\u00ean xe chuy\u1ec3n \u0111\u1ed5i AC sang DC, v\u00e0 b\u1ea5t k\u1ef3 l\u1ed7i n\u00e0o trong qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra th\u00e0nh ph\u1ea7n DC trong ngu\u1ed3n. Do \u0111\u00f3, c\u00e1c quy \u0111\u1ecbnh v\u1ec1 thi\u1ebft b\u1ecb s\u1ea1c y\u00eau c\u1ea7u ph\u1ea3i c\u00f3 RCD lo\u1ea1i B ho\u1eb7c c\u01a1 ch\u1ebf ph\u00e1t hi\u1ec7n DC 6 mA ri\u00eang bi\u1ec7t (RDC-DD) trong thi\u1ebft b\u1ecb. N\u1ebfu b\u1ed9 s\u1ea1c kh\u00f4ng c\u00f3 thi\u1ebft b\u1ecb nh\u01b0 v\u1eady, RCD ph\u00eda tr\u00ean ph\u1ea3i l\u00e0 lo\u1ea1i B, \u0111i\u1ec1u m\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho. <a href=\"https:\/\/huyuglobal.com\/vi\/product\/vrl11b-type-b-rccb\/\">RCCB Lo\u1ea1i B<\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho.<\/li>\n<li><span style=\"color: #ff0000;\">Bi\u1ebfn t\u1ea7n quang \u0111i\u1ec7n.<\/span> B\u1ed9 bi\u1ebfn t\u1ea7n kh\u00f4ng bi\u1ebfn \u00e1p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo c\u00e1ch \u0111\u1ea3m b\u1ea3o r\u1eb1ng ch\u00fang ch\u00e8n m\u1ed9t th\u00e0nh ph\u1ea7n DC nh\u1ecf v\u00e0o \u0111\u1ea7u ra c\u1ee7a ch\u00fang \u1edf ph\u00eda AC v\u00ec ch\u00fang kh\u00f4ng c\u00f3 bi\u1ebfn \u00e1p c\u00e1ch ly. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 ph\u1ea3i c\u00f3 c\u00e1c ti\u00eau chu\u1ea9n c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1eb7t ra li\u00ean quan \u0111\u1ebfn gi\u00e1 tr\u1ecb c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n DC m\u00e0 PV c\u00f3 th\u1ec3 t\u1ea1o ra v\u00e0 l\u00fd do t\u1ea1i sao m\u1ed9t RCD \u1edf ph\u00eda tr\u00ean c\u1ea7n ph\u00e1t hi\u1ec7n DC \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang.<\/li>\n<li><span style=\"color: #ff0000;\">B\u1ed9 bi\u1ebfn t\u1ea7n lai l\u01b0u tr\u1eef pin.<\/span> B\u1ed9 bi\u1ebfn t\u1ea7n lai \u1edf ch\u1ebf \u0111\u1ed9 pin ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ngu\u1ed3n DC v\u00ec n\u00f3 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi m\u1ea1ng \u1edf ph\u00eda AC m\u00e0 kh\u00f4ng c\u00f3 c\u00e1ch ly.<\/li>\n<li><span style=\"color: #ff0000;\">B\u1ed9 bi\u1ebfn t\u1ea7n t\u1ea7n s\u1ed1 bi\u1ebfn \u0111\u1ed5i.<\/span> M\u1ed9t bi\u1ebfn t\u1ea7n \u0111\u1ea7u v\u00e0o m\u1ed9t pha ph\u1ea3i ch\u1ec9nh l\u01b0u tr\u01b0\u1edbc khi t\u1ea1o ra \u0111\u1ea7u ra v\u00e0 l\u1ed7i \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n trong li\u00ean k\u1ebft DC c\u00f3 th\u1ec3 c\u00f3 gi\u00e1 tr\u1ecb th\u00e0nh ph\u1ea7n DC m\u01b0\u1ee3t m\u00e0 \u1edf \u0111\u1ea7u v\u00e0o c\u1ee7a b\u1ed9 bi\u1ebfn t\u1ea7n.<\/li>\n<\/ul>\n<p>M\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb ph\u00f2ng th\u00ed nghi\u1ec7m y t\u1ebf v\u00e0 m\u1ed9t s\u1ed1 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n LED c\u0169ng nh\u01b0 thi\u1ebft b\u1ecb CNTT t\u1ea1o ra \u0111\u1ee7 s\u00f3ng DC khi\u1ebfn c\u00e1c thi\u1ebft b\u1ecb lo\u1ea1i A kh\u00f4ng th\u1ec3 t\u1ef1 k\u00edch ho\u1ea1t m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 tr\u1ee3 gi\u00fap b\u00ean ngo\u00e0i.<\/p>\n<p>B\u1ed9 bi\u1ebfn t\u1ea7n ba pha c\u00f3 b\u1ed9 ch\u1ec9nh l\u01b0u s\u00e1u xung t\u1ea1o ra d\u00f2ng DC xung \u0111\u1ed9ng v\u00e0 do \u0111\u00f3, c\u00e1c thi\u1ebft b\u1ecb lo\u1ea1i A c\u00f3 th\u1ec3 x\u1eed l\u00fd lo\u1ea1i DC n\u00e0y. L\u00fd do l\u00e0 \u0111\u1ea7u v\u00e0o m\u1ed9t pha v\u00e0 c\u00e1c c\u1ea5u tr\u00fac kh\u00f4ng bi\u1ebfn \u00e1p t\u1ea1o ra th\u00e0nh ph\u1ea7n DC m\u01b0\u1ee3t m\u00e0.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4623\" style=\"text-align: center;\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/10\/Type-B-RCCB-Type-B-RCBO-and-Type-F.webp\" alt=\"RCCB lo\u1ea1i B, RCBO lo\u1ea1i B v\u00e0 lo\u1ea1i F\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>RCCB lo\u1ea1i B, RCBO lo\u1ea1i B v\u00e0 lo\u1ea1i F<\/h2>\n<p>Vi\u1ec7c xu\u1ea5t hi\u1ec7n ch\u1eef B trong hai h\u1ec7 th\u1ed1ng ph\u00e2n lo\u1ea1i ri\u00eang bi\u1ec7t g\u00e2y nh\u1ea7m l\u1eabn v\u1edbi ba s\u1ea3n ph\u1ea9m.<\/p>\n<ul>\n<li>RCCB lo\u1ea1i B ph\u00e1t hi\u1ec7n d\u00f2ng r\u00f2 DC m\u01b0\u1ee3t nh\u01b0ng kh\u00f4ng ng\u0103n ng\u1eeba qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch. Do \u0111\u00f3, n\u00f3 c\u1ea7n \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t c\u00f9ng v\u1edbi MCB ho\u1eb7c MCCB \u0111\u1ec3 b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i.<\/li>\n<li>RCBO lo\u1ea1i B t\u00edch h\u1ee3p c\u1ea3 ph\u00e1t hi\u1ec7n r\u00f2 r\u1ec9 v\u00e0 b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i trong m\u1ed9t thi\u1ebft b\u1ecb. M\u1eb7c d\u00f9 chi ph\u00ed cao h\u01a1n v\u00e0 c\u00f3 \u00edt m\u1ee9c \u0111\u1ecbnh m\u1ee9c h\u01a1n, nh\u01b0ng \u0111\u00e2y l\u00e0 gi\u1ea3i ph\u00e1p \u0111\u01a1n gi\u1ea3n h\u01a1n cho m\u1ea1ch chuy\u00ean d\u1ee5ng nh\u01b0 b\u1ed9 s\u1ea1c EV.<\/li>\n<li>Lo\u1ea1i F l\u00e0m t\u0103ng s\u1ef1 nh\u1ea7m l\u1eabn v\u00ec n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n d\u00f2ng r\u00f2 t\u1ea7n s\u1ed1 ph\u1ee9c t\u1ea1p \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi b\u1ed9 bi\u1ebfn t\u1ea7n m\u1ed9t pha v\u00e0 m\u1ed9t s\u1ed1 thi\u1ebft b\u1ecb. Tuy nhi\u00ean, n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 thay th\u1ebf cho lo\u1ea1i B v\u00ec n\u00f3 kh\u00f4ng ph\u1ea3n \u1ee9ng v\u1edbi DC m\u01b0\u1ee3t. Khi l\u1eafp \u0111\u1eb7t t\u1ea1o ra DC m\u01b0\u1ee3t, lo\u1ea1i F kh\u00f4ng \u0111\u1ee7, v\u00e0 khi ch\u1ec9 t\u1ea1o ra t\u1ea7n s\u1ed1 h\u1ed7n h\u1ee3p, th\u00ec <a href=\"https:\/\/huyuglobal.com\/vi\/product\/vrl11f-type-f-rccb\/\">RCCB lo\u1ea1i F<\/a> l\u00e0 c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang v\u1edbi chi ph\u00ed th\u1ea5p h\u01a1n.<\/li>\n<\/ul>\n<p>Ngo\u00e0i ra, c\u00f3 m\u1ed9t h\u1ec7 th\u1ed1ng ch\u1eef c\u00e1i c\u1ee5 th\u1ec3 cho c\u00e1c b\u1ed9 ng\u1eaft qu\u00e1 d\u00f2ng, trong \u0111\u00f3 c\u00e1c ch\u1eef B, C v\u00e0 D \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ec9 \u0111i\u1ec3m k\u00edch t\u1eeb t\u1eeb tr\u01b0\u1eddng. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 \u201cMCB lo\u1ea1i B\u201d v\u00e0 \u201cRCCB lo\u1ea1i B\u201d kh\u00f4ng c\u00f3 y\u1ebfu t\u1ed1 chung n\u00e0o ngo\u00e0i ch\u1eef c\u00e1i c\u1ee7a ch\u00fang. Do \u0111\u00f3, vi\u1ec7c nh\u1ea7m l\u1eabn ch\u00fang trong \u0111\u1eb7c t\u1ea3 l\u00e0 l\u1ed7i ph\u1ed5 bi\u1ebfn v\u00e0 t\u1ed1n k\u00e9m.<\/p>\n<h2>K\u00edch th\u01b0\u1edbc v\u00e0 L\u1ef1a ch\u1ecdn<\/h2>\n<p>N\u0103m y\u1ebfu t\u1ed1 x\u00e1c \u0111\u1ecbnh thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n<ul>\n<li>C\u1ef1c \u2013 M\u1ed9t c\u1ef1c cho m\u1ed9t pha v\u00e0 hai c\u1ef1c cho ba pha, v\u1ecb tr\u00ed trung t\u00ednh \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u00e0 x\u00e1c nh\u1eadn.<\/li>\n<li>D\u00f2ng \u0111\u1ecbnh m\u1ee9c \u2013 \u00cdt nh\u1ea5t l\u00e0 d\u00f2ng thi\u1ebft k\u1ebf c\u1ee7a m\u1ea1ch, d\u00f2ng \u0111\u1ecbnh m\u1ee9c \u0111\u01b0\u1ee3c kh\u1edbp v\u1edbi thi\u1ebft b\u1ecb qu\u00e1 d\u00f2ng ph\u00eda tr\u00ean \u0111\u1ec3 c\u1ea3 hai thi\u1ebft b\u1ecb \u0111\u1ec1u c\u00f3 b\u1ea3o v\u1ec7 \u0111\u1ea7y \u0111\u1ee7.<\/li>\n<li>\u0110\u1ed9 nh\u1ea1y \u2013 30 mA d\u00e0nh cho an to\u00e0n c\u00e1 nh\u00e2n, 100 v\u00e0 300 mA d\u00e0nh cho an to\u00e0n ch\u00e1y ho\u1eb7c ch\u1ecdn l\u1ecdc c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb ph\u00eda tr\u00ean \u0111\u01b0\u1ee3c trang b\u1ecb 30 mA.<\/li>\n<li>C\u00e1c lo\u1ea1i \u2013 Lo\u1ea1i B d\u00e0nh cho c\u00e1c m\u1ea1ch mang d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u m\u01b0\u1ee3t m\u00e0, lo\u1ea1i A cho c\u00e1c m\u1ea1ch \u0111i\u1ec3n h\u00ecnh v\u00e0 lo\u1ea1i AC d\u00e0nh cho t\u1ea3i thu\u1ea7n tr\u1edf.<\/li>\n<li>C\u00e1c phi\u00ean b\u1ea3n c\u00f3 \u0111i\u1ec1u ki\u1ec7n v\u00e0 tr\u1ec5 th\u1eddi gian \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi c\u1ea7n ch\u1ecdn l\u1ecdc gi\u1eefa hai thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 s\u1ef1 c\u1ed1 \u0111\u1ea5t.<\/li>\n<\/ul>\n<p>C\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ecdn l\u1ecdc trong thi\u1ebft k\u1ebf l\u00e0 tr\u00e1nh s\u1eed d\u1ee5ng hai thi\u1ebft b\u1ecb c\u00f3 \u0111\u1ecbnh m\u1ee9c 30 mA n\u1ed1i ti\u1ebfp m\u00e0 kh\u00f4ng c\u00f3 tr\u1ec5 th\u1eddi gian v\u00ec vi\u1ec7c ng\u1eaft do l\u1ed7i s\u1ebd khi\u1ebfn c\u1ea3 hai thi\u1ebft b\u1ecb ng\u1eaft c\u00f9ng l\u00fac d\u1eabn \u0111\u1ebfn m\u1ea5t to\u00e0n b\u1ed9 ngu\u1ed3n cung c\u1ea5p v\u00e0 ch\u1ec9 m\u1ed9t m\u1ea1ch b\u1ecb t\u1eaft. T\u01b0\u01a1ng t\u00e1c gi\u1eefa RCD v\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t b\u00ean c\u1ea1nh n\u00f3 l\u00e0 v\u1ea5n \u0111\u1ec1 ri\u00eang, v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp trong ghi ch\u00fa c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/huyuglobal.com\/vi\/blog\/rccb-vs-rcbo\/\">L\u1ef1a ch\u1ecdn RCCB so v\u1edbi RCBO<\/a>.<\/p>\n<h2>Ki\u1ec3m tra Thi\u1ebft b\u1ecb Lo\u1ea1i B<\/h2>\n<p>M\u1ed9t thi\u1ebft b\u1ecb RCD th\u00f4ng th\u01b0\u1eddng kh\u00f4ng \u0111\u1ee7, v\u00ec trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh th\u1eed nghi\u1ec7m, lo\u1ea1i AC v\u00e0 lo\u1ea1i A \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u00ean h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb, ch\u1ec9 c\u00f3 m\u1ed9t v\u00e0i m\u1eabu c\u00f3 t\u00ednh n\u0103ng ki\u1ec3m tra DC. Tuy nhi\u00ean, \u0111\u1ec3 ki\u1ec3m tra \u0111\u00fang m\u1ed9t thi\u1ebft b\u1ecb Lo\u1ea1i B, c\u1ea7n m\u1ed9t thi\u1ebft b\u1ecb ki\u1ec3m tra c\u00f3 kh\u1ea3 n\u0103ng ti\u00eam d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u \u1ed5n \u0111\u1ecbnh trong ph\u1ea1m vi nh\u1ea1y c\u1ea3m c\u1ee7a n\u00f3 c\u00f9ng v\u1edbi b\u00e0i ki\u1ec3m tra t\u0103ng d\u1ea7n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh d\u00f2ng \u0111i\u1ec7n ng\u1eaft m\u1ea1ch.<\/p>\n<p>Qu\u00e1 tr\u00ecnh ki\u1ec3m tra n\u00ean bao g\u1ed3m:<\/p>\n<ul>\n<li>Kh\u00f4ng ng\u1eaft m\u1ea1ch \u1edf n\u1eeda gi\u00e1 tr\u1ecb I\u0394n nh\u1eb1m lo\u1ea1i b\u1ecf nguy c\u01a1 ng\u1eaft m\u1ea1ch gi\u1ea3.<\/li>\n<li>Ng\u1eaft m\u1ea1ch \u1edf gi\u00e1 tr\u1ecb I\u0394n v\u1edbi th\u1eddi gian duy tr\u00ec \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c ghi l\u1ea1i.<\/li>\n<li>Ng\u1eaft m\u1ea1ch \u1edf gi\u00e1 tr\u1ecb 5 I\u0394n cho th\u1ea5y ti\u1ebfn tr\u00ecnh h\u1ecfng h\u00f3c v\u1edbi d\u1ea5u hi\u1ec7u r\u00f5 r\u00e0ng.<\/li>\n<li>B\u00e0i ki\u1ec3m tra Snap cung c\u1ea5p d\u00f2ng \u0111i\u1ec7n ng\u1eaft m\u1ea1ch v\u00e0 so s\u00e1nh v\u1edbi gi\u00e1 tr\u1ecb khuy\u1ebfn ngh\u1ecb.<\/li>\n<li>Ki\u1ec3m tra DC ph\u00e2n bi\u1ec7t thi\u1ebft b\u1ecb Lo\u1ea1i B \u0111ang ho\u1ea1t \u0111\u1ed9ng v\u1edbi thi\u1ebft b\u1ecb Lo\u1ea1i A \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/li>\n<\/ul>\n<p>C\u1ea3 hai g\u00f3c pha ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra v\u00ec \u0111i\u1ec1u n\u00e0y s\u1ebd gi\u00fap x\u00e1c \u0111\u1ecbnh xem thi\u1ebft b\u1ecb c\u00f3 ng\u1eaft m\u1ea1ch \u1edf 0 \u0111\u1ed9 nh\u01b0ng kh\u00f4ng ng\u1eaft m\u1ea1ch \u1edf 180 \u0111\u1ed9, l\u00e0m n\u1ed5i b\u1eadt v\u1ea5n \u0111\u1ec1 ch\u1ec9nh l\u01b0u n\u1eeda s\u00f3ng quan tr\u1ecdng \u0111\u1ec3 ph\u00e1t hi\u1ec7n l\u1ed7i.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4624\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/10\/Choosing-a-Brand-and-a-Model.webp\" alt=\"L\u1ef1a ch\u1ecdn Th\u01b0\u01a1ng hi\u1ec7u v\u00e0 M\u1eabu m\u00e3\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>L\u1ef1a ch\u1ecdn Th\u01b0\u01a1ng hi\u1ec7u v\u00e0 M\u1eabu m\u00e3<\/h2>\n<p>C\u00f3 b\u1ed1n nh\u00e0 cung c\u1ea5p ch\u00ednh tr\u00ean th\u1ecb tr\u01b0\u1eddng \u0111\u1eb7c t\u1ea3, \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n l\u00e0: ABB, Schneider Electric, Siemens v\u00e0 Legrand trong khi Hager v\u00e0 Doepke l\u00e0 c\u00e1c th\u01b0\u01a1ng hi\u1ec7u kh\u00e1c c\u1ea1nh tranh t\u1ea1i ch\u00e2u \u00c2u v\u00e0 m\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t chuy\u00ean bi\u1ec7t t\u1ea1i ch\u00e2u \u00c1. S\u1ea3n ph\u1ea9m Lo\u1ea1i B c\u1ee7a h\u1ecd c\u00f3 m\u1ee5c \u0111\u00edch t\u01b0\u01a1ng t\u1ef1, v\u1edbi s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 k\u00edch th\u01b0\u1edbc v\u1ecf, c\u00f4ng su\u1ea5t \u0111\u1ea7u n\u1ed1i, lo\u1ea1i ph\u1ee5 ki\u1ec7n v\u00e0 l\u01b0\u1ee3ng th\u00f4ng tin cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u1edf c\u1ea5p \u0111\u1ed9 d\u1ef1 \u00e1n l\u00e0 t\u00e0i li\u1ec7u ch\u1ee9ng nh\u1eadn v\u00e0 s\u1ef1 s\u1eb5n c\u00f3 c\u1ee7a lo\u1ea1i \u0111\u1ecbnh m\u1ee9c y\u00eau c\u1ea7u. Do \u0111\u00f3, thi\u1ebft b\u1ecb Lo\u1ea1i B 4 c\u1ef1c 63 A c\u00f3 s\u1eb5n trong kho c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c c\u00f4ng ty ch\u00e2u \u00c2u, trong khi thi\u1ebft b\u1ecb 125 A v\u1edbi \u0111\u1ecbnh m\u1ee9c c\u1ee5 th\u1ec3 300 mA v\u00e0 \u0111\u1ed9 tr\u1ec5 th\u1eddi gian l\u00e0 s\u1ea3n ph\u1ea9m c\u1ea7n \u0111\u1eb7t h\u00e0ng v\u00e0 c\u00f3 th\u1ec3 m\u1ea5t \u0111\u1ebfn s\u00e1u tu\u1ea7n \u0111\u1ec3 l\u1eafp r\u00e1p.<\/p>\n<p>C\u00e2u tr\u1ea3 l\u1eddi ri\u00eang c\u1ee7a ch\u00fang t\u00f4i cho tr\u01b0\u1eddng h\u1ee3p m\u1ea1ch chuy\u00ean d\u1ee5ng l\u00e0 <a href=\"https:\/\/huyuglobal.com\/vi\/product\/vrl22b-type-b-rcbo-breaker\/\">RCBO lo\u1ea1i B<\/a>, k\u1ebft h\u1ee3p b\u1ea3o v\u1ec7 d\u00f2ng r\u00f2 v\u00e0 qu\u00e1 d\u00f2ng trong m\u1ed9t khung duy nh\u1ea5t \u0111\u1ec3 b\u1ed9 s\u1ea1c ho\u1eb7c ngu\u1ed3n c\u1ea5p PV \u0111\u01a1n kh\u00f4ng c\u1ea7n thi\u1ebft b\u1ecb th\u1ee9 hai b\u00ean c\u1ea1nh. M\u1ee5c \u0111\u00edch c\u1ee7a vi\u1ec7c c\u00f3 m\u1ed9t khung \u0111a n\u0103ng l\u00e0 th\u1ef1c t\u1ebf: h\u1ec7 th\u1ed1ng b\u1ea3ng k\u1ef9 thu\u1eadt ch\u1ea5p nh\u1eadn c\u00e1c thi\u1ebft b\u1ecb A, F v\u00e0 B trong c\u00f9ng k\u00edch th\u01b0\u1edbc, do \u0111\u00f3 cho ph\u00e9p n\u00e2ng c\u1ea5p m\u1ed9t m\u1ea1ch m\u00e0 kh\u00f4ng c\u1ea7n x\u00e2y d\u1ef1ng v\u1ecf m\u1edbi cho d\u1ef1 \u00e1n.<\/p>\n<h2>Khi Lo\u1ea1i B L\u00e0 L\u1ef1a Ch\u1ecdn Sai<\/h2>\n<p>Chi ph\u00ed l\u00e0 l\u00fd do tr\u1ef1c ti\u1ebfp nh\u1ea5t, nh\u01b0ng kh\u00f4ng \u0111\u01a1n gi\u1ea3n: thi\u1ebft b\u1ecb Lo\u1ea1i B c\u00f3 th\u1ec3 \u0111\u1eaft g\u1ea5p ba \u0111\u1ebfn n\u0103m l\u1ea7n so v\u1edbi thi\u1ebft b\u1ecb Lo\u1ea1i A c\u00f9ng th\u00f4ng s\u1ed1. N\u00f3i c\u00e1ch kh\u00e1c, s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb Lo\u1ea1i B cho m\u1ecdi m\u1ea1ch c\u00f3 th\u1ec3 l\u00e0m t\u0103ng t\u1ed5ng chi ph\u00ed thi\u1ebft b\u1ecb l\u00ean g\u1ea5p ba l\u1ea7n m\u00e0 kh\u00f4ng mang l\u1ea1i l\u1ee3i \u00edch an to\u00e0n cho c\u00e1c m\u1ea1ch kh\u00f4ng th\u1ec3 cung c\u1ea5p ngu\u1ed3n DC \u1ed5n \u0111\u1ecbnh.<\/p>\n<p>M\u1ed9t l\u00fd do kh\u00e1c \u0111\u1ec3 s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb Lo\u1ea1i B l\u00e0 t\u00ednh ch\u1ecdn l\u1ecdc. Vi\u1ec7c l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb Lo\u1ea1i B \u1edf ph\u00eda tr\u00ean kh\u00f4ng lo\u1ea1i b\u1ecf v\u1ea5n \u0111\u1ec1 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) trong m\u1ea1ch ph\u00eda d\u01b0\u1edbi v\u00ec thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 c\u1ea7n \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t ch\u00ednh x\u00e1c t\u1ea1i n\u01a1i t\u1ea3i DC \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i, n\u1ebfu kh\u00f4ng s\u1ebd kh\u00f4ng c\u00f3 s\u1ef1 b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i l\u1ed7i trong t\u1ea5t c\u1ea3 c\u00e1c l\u1eafp \u0111\u1eb7t.<\/p>\n<p>L\u00fd do th\u1ee9 ba l\u00e0 v\u1ec1 tr\u00ecnh \u0111\u1ed9 chuy\u00ean m\u00f4n. M\u1ed9t thi\u1ebft b\u1ecb lo\u1ea1i B \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n b\u1eb1ng b\u1ed9 ki\u1ec3m tra AC \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t nh\u01b0ng kh\u00f4ng \u0111\u01b0\u1ee3c x\u00e1c minh, v\u00e0 t\u00e0i li\u1ec7u hi\u1ec7u chu\u1ea9n l\u00e0 kh\u00f4ng ch\u00ednh x\u00e1c. N\u1ebfu \u0111\u1ed9i ng\u0169 v\u1eadn h\u00e0nh kh\u00f4ng th\u1ec3 ki\u1ec3m tra n\u00f3, th\u00ec th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 m\u1ed9t kho\u1ea3ng tr\u1ed1ng m\u00e0 kh\u00f4ng s\u1ea3n ph\u1ea9m n\u00e0o c\u00f3 th\u1ec3 l\u1ea5p \u0111\u1ea7y, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ph\u1ea1m vi <a href=\"https:\/\/huyuglobal.com\/vi\/rccb-breaker-manufacturer-supplier\/\">RCCB c\u1ee7a ch\u00fang t\u00f4i<\/a> \u0111\u01b0\u1ee3c t\u00e0i li\u1ec7u h\u00f3a v\u1edbi c\u00e1c \u0111i\u1ec3m ki\u1ec3m tra thay v\u00ec ch\u1ec9 c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ecbnh m\u1ee9c.<\/p>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa RCCB lo\u1ea1i A v\u00e0 lo\u1ea1i B l\u00e0 g\u00ec?<\/h3>\n<p>RCCB lo\u1ea1i A \u0111\u01b0\u1ee3c trang b\u1ecb \u0111\u1ec3 ph\u00e1t hi\u1ec7n d\u00f2ng \u0111i\u1ec7n xung v\u00e0 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u, trong khi RCCB lo\u1ea1i B c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u m\u01b0\u1ee3t m\u00e0, \u0111i\u1ec1u m\u00e0 RCCB lo\u1ea1i A kh\u00f4ng th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c v\u00ec d\u00f2ng DC \u1ed5n \u0111\u1ecbnh l\u00e0m b\u00e3o h\u00f2a l\u00f5i c\u1ea3m bi\u1ebfn c\u1ee7a n\u00f3. Thi\u1ebft b\u1ecb lo\u1ea1i B l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00e1t hi\u1ec7n d\u00f2ng \u0111i\u1ec7n d\u01b0 do c\u00e1c thi\u1ebft b\u1ecb nh\u01b0 b\u1ed9 s\u1ea1c EV, pin, b\u1ed9 bi\u1ebfn t\u1ea7n PV, v.v.<\/p>\n<h3>T\u00f4i n\u00ean s\u1eed d\u1ee5ng RCBO lo\u1ea1i A hay lo\u1ea1i B?<\/h3>\n<p>Lo\u1ea1i A ph\u00f9 h\u1ee3p cho c\u00e1c m\u1ea1ch \u0111a n\u0103ng, nh\u01b0ng lo\u1ea1i B ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1ea1ch c\u00f3 s\u1eed d\u1ee5ng d\u00f2ng DC m\u01b0\u1ee3t m\u00e0. \u0110\u1ed1i v\u1edbi b\u1ed9 s\u1ea1c EV chuy\u00ean d\u1ee5ng, s\u1eed d\u1ee5ng RCBO lo\u1ea1i B l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1t nh\u1ea5t v\u00ec n\u00f3 cung c\u1ea5p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng c\u00f9ng v\u1edbi b\u1ea3o v\u1ec7 d\u00f2ng \u0111i\u1ec7n d\u01b0.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa b\u1ed9 ng\u1eaft lo\u1ea1i A, lo\u1ea1i B v\u00e0 lo\u1ea1i C l\u00e0 g\u00ec?<\/h3>\n<p>RCCB lo\u1ea1i B l\u00e0 lo\u1ea1i thi\u1ebft b\u1ecb ch\u1ec9 ra lo\u1ea1i d\u00f2ng \u0111i\u1ec7n m\u00e0 n\u00f3 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n, trong khi MCB lo\u1ea1i C cho bi\u1ebft d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng t\u1eeb t\u00ednh (g\u1ea5p n\u0103m \u0111\u1ebfn m\u01b0\u1eddi l\u1ea7n d\u00f2ng \u0111\u1ecbnh m\u1ee9c) c\u1ee7a thi\u1ebft b\u1ecb. Do \u0111\u00f3, m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 l\u00e0 MCB lo\u1ea1i C v\u00e0 RCCB lo\u1ea1i A c\u00f9ng l\u00fac.<\/p>\n<h3>RCCB lo\u1ea1i B l\u00e0 g\u00ec?<\/h3>\n<p>N\u00f3 l\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch d\u00f2ng \u0111i\u1ec7n d\u01b0 cho ph\u00e9p ph\u00e1t hi\u1ec7n d\u00f2ng AC h\u00ecnh sin, d\u00f2ng DC xung v\u00e0 d\u00f2ng DC m\u01b0\u1ee3t m\u00e0, theo quy \u0111\u1ecbnh c\u1ee7a IEC 62423.<\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.siemens.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Siemens \u2014 Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 d\u00f2ng \u0111i\u1ec7n d\u01b0 v\u00e0 l\u1ef1a ch\u1ecdn lo\u1ea1i<\/a><\/li>\n<li><a href=\"https:\/\/www.beama.org.uk\/\" rel=\"nofollow noopener\" target=\"_blank\">BEAMA \u2014 C\u00e1c lo\u1ea1i RCD v\u00e0 h\u01b0\u1edbng d\u1eabn \u1ee9ng d\u1ee5ng<\/a><\/li>\n<li><a href=\"https:\/\/onccy.com\/\" rel=\"nofollow noopener\" target=\"_blank\">ONCCY \u2014 RCCB lo\u1ea1i B cho h\u1ec7 th\u1ed1ng VFD, EV v\u00e0 n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<\/a><\/li>\n<li><a href=\"https:\/\/cnkuangya.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Kuangya \u2014 So s\u00e1nh RCCB lo\u1ea1i A v\u00e0 lo\u1ea1i B<\/a><\/li>\n<li><a href=\"https:\/\/www.fluke.com\/\" rel=\"nofollow noopener\" target=\"_blank\">Fluke \u2014 Thi\u1ebft b\u1ecb ki\u1ec3m tra RCD v\u00e0 lo\u1ea1i B<\/a><\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Lo\u1ea1i B kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t b\u1ea3n n\u00e2ng c\u1ea5p m\u00e0 l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p. N\u00f3 \u0111\u01b0\u1ee3c t\u1ea1o ra do m\u1ed9t s\u1ed1 t\u1ea3i t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n d\u01b0 m\u1ed9t chi\u1ec1u l\u00e0m m\u00f9 t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb kh\u00e1c, v\u00e0 lo\u1ea1i B l\u00e0 thi\u1ebft b\u1ecb duy nh\u1ea5t c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n l\u1ed7i \u0111\u00f3.<\/p>\n<p>H\u00e3y cho ch\u00fang t\u00f4i bi\u1ebft t\u1ea3i, ngu\u1ed3n cung c\u1ea5p v\u00e0 \u0111\u1ed9 nh\u1ea1y y\u00eau c\u1ea7u, ch\u00fang t\u00f4i s\u1ebd cho b\u1ea1n bi\u1ebft lo\u1ea1i v\u00e0 c\u1ea5u h\u00ecnh c\u1ef1c c\u1ee7a khung ph\u00f9 h\u1ee3p v\u1edbi PCB c\u1ee7a b\u1ea1n.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>It is important to know that an AC RCCB does not detect the fault caused by a modern inverter. The distinction between knowing and not knowing this is important because a charging point can operate behind an RCD that does nothing while someone is getting killed by electricity. Type B is designed to fill this [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4622,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-4620","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\/4620","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=4620"}],"version-history":[{"count":3,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/4620\/revisions"}],"predecessor-version":[{"id":4626,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/posts\/4620\/revisions\/4626"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media\/4622"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/media?parent=4620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/categories?post=4620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/vi\/wp-json\/wp\/v2\/tags?post=4620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}