{"id":4247,"date":"2026-09-26T00:00:00","date_gmt":"2026-09-26T00:00:00","guid":{"rendered":"https:\/\/chac-electric.com\/?p=4247"},"modified":"2026-10-19T03:37:23","modified_gmt":"2026-10-19T03:37:23","slug":"y-nghia-cua-dong-cong-suat-thap-dpn-la-gi","status":"publish","type":"post","link":"https:\/\/chac-electric.com\/vi\/blog\/what-is-dpn-mcb-meaning\/","title":{"rendered":"\u00dd ngh\u0129a c\u1ee7a dpn MCB l\u00e0 g\u00ec?"},"content":{"rendered":"<p>Trong nhi\u1ec1u danh m\u1ee5c, <strong>DPN MCB<\/strong> Mi\u00eau t\u1ea3 m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch thu nh\u1ecf 1P+N: m\u1ed9t c\u1ef1c pha \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 v\u1edbi m\u1ed9t c\u1ef1c trung t\u00ednh \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i c\u01a1 h\u1ecdc. Thu\u1eadt ng\u1eef n\u00e0y kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c t\u1eebng s\u1ea3n ph\u1ea9m. H\u00e3y \u0111\u1ecdc s\u1ed1 danh m\u1ee5c \u0111\u1ea7y \u0111\u1ee7, s\u01a1 \u0111\u1ed3 m\u1ea1ch v\u00e0 c\u00e1c ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7. M\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch thu nh\u1ecf 1P+N nh\u1ecf g\u1ecdn, m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 hai c\u1ef1c \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 v\u00e0 m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch 1P+N RCBO c\u00f3 th\u1ec3 c\u00f3 c\u00e1c m\u00f4 t\u1ea3 t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 kh\u00e1c nhau.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/09\/what-is-dpn-mcb-meaning-featured-v2-200k.webp\" alt=\"\u1ee8ng d\u1ee5ng n\u00e0o c\u00f3 ch\u1ee9c n\u0103ng Dpn Mcb Meaning?\" loading=\"eager\"\/><\/p>\n<h2 id=\"count-protected-poles-separately-from-switched-poles\">S\u1ed1 l\u01b0\u1ee3ng c\u1ed9t \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 ri\u00eang bi\u1ec7t v\u1edbi c\u00e1c c\u1ed9t \u0111\u00e3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i<\/h2>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t quan tr\u1ecdng nh\u1ea5t l\u00e0 vi\u1ec7c m\u1edf c\u1ea7u ch\u00ec v\u00e0 ph\u00e1t hi\u1ec7n d\u00f2ng \u0111i\u1ec7n qu\u00e1 d\u00f2ng trong \u0111\u00f3. M\u1ed9t c\u1ea7u ch\u00ec MCB ki\u1ec3u 1P+N th\u00f4ng th\u01b0\u1eddng s\u1ebd m\u1edf pha v\u00e0 trung t\u00ednh c\u00f9ng m\u1ed9t l\u00fac, \u0111\u1ed3ng th\u1eddi c\u0169ng \u00e1p d\u1ee5ng bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 d\u00f2ng \u0111i\u1ec7n qu\u00e1 d\u00f2ng cho c\u1ef1c pha. \u0110i\u1ec1u n\u00e0y kh\u00e1c v\u1edbi c\u1ea7u ch\u00ec hai c\u1ef1c c\u00f3 bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7 d\u00f2ng \u0111i\u1ec7n qu\u00e1 d\u00f2ng \u1edf c\u1ea3 hai c\u1ef1c. H\u00e3y ki\u1ec3m tra s\u01a1 \u0111\u1ed3 v\u00e0 tr\u01b0\u1eddng d\u1eef li\u1ec7u \u0111\u1ec3 bi\u1ebft s\u1ed1 l\u01b0\u1ee3ng c\u1ef1c \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7.<\/p>\n<p>Danh m\u1ee5c DPN N c\u1ee7a Schneider Electric cung c\u1ea5p m\u1ed9t v\u00ed d\u1ee5 c\u1ee5 th\u1ec3 v\u1ec1 c\u1ea5u h\u00ecnh 1P+N, nh\u01b0ng \u0111\u00e3 ng\u1eebng s\u1ea3n xu\u1ea5t. H\u00e3y s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 hi\u1ec3u thu\u1eadt ng\u1eef, kh\u00f4ng ph\u1ea3i \u0111\u1ec3 \u0111\u01b0a ra khuy\u1ebfn ngh\u1ecb mua h\u00e0ng hi\u1ec7n t\u1ea1i hay \u0111\u1ec3 ch\u1ee9ng minh c\u1ea5u h\u00ecnh c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t kh\u00e1c. Tr\u00ean thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c cung c\u1ea5p, h\u00e3y x\u00e1c nh\u1eadn thi\u1ebft b\u1ecb c\u00f3 g\u1eafn k\u00fd hi\u1ec7u N hay kh\u00f4ng v\u00e0 xem s\u01a1 \u0111\u1ed3 b\u00ean trong c\u00f3 kh\u1edbp v\u1edbi b\u00e1o gi\u00e1 hay kh\u00f4ng.<\/p>\n<h2 id=\"match-the-device-to-the-supply-system\">K\u1ebft n\u1ed1i thi\u1ebft b\u1ecb v\u1edbi h\u1ec7 th\u1ed1ng c\u1ea5p \u0111i\u1ec7n<\/h2>\n<p>A <strong>B\u1ed9 ng\u1eaft m\u1ea1ch ki\u1ec3u 1P+N<\/strong> N\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 s\u1eed d\u1ee5ng trong c\u1ea5u h\u00ecnh c\u00f3 pha \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 pha trung t\u00ednh theo c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 thay th\u1ebf t\u1ef1 \u0111\u1ed9ng cho m\u1ea1ch hai d\u00e2y d\u1eabn. N\u1ebfu c\u1ea3 hai d\u00e2y d\u1eabn \u0111\u1ec1u c\u1ea7n b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng, vi\u1ec7c thay th\u1ebf c\u1ef1c trung t\u00ednh c\u00f3 c\u1ea7u ch\u00ec nh\u01b0ng kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 s\u1ebd thay \u0111\u1ed5i c\u1ea5u tr\u00fac b\u1ea3o v\u1ec7.<\/p>\n<p>Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i kh\u00f4ng trung h\u00f2a c\u0169ng ph\u1ee5 thu\u1ed9c v\u00e0o h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t v\u00e0 quy t\u1eafc \u0111\u1ea5u n\u1ed1i \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng. Kh\u00f4ng n\u00ean ng\u1eaft k\u1ebft n\u1ed1i d\u00e2y b\u1ea3o v\u1ec7 ho\u1eb7c coi d\u00e2y b\u1ea3o v\u1ec7 v\u00e0 d\u00e2y trung h\u00f2a k\u1ebft h\u1ee3p nh\u01b0 m\u1ed9t d\u00e2y trung h\u00f2a chuy\u1ec3n \u0111\u1ed5i th\u00f4ng th\u01b0\u1eddng. Nh\u00e0 thi\u1ebft k\u1ebf n\u00ean x\u00e1c \u0111\u1ecbnh c\u00e1ch s\u1eafp x\u1ebfp tr\u01b0\u1edbc khi nh\u00e0 ch\u1ebf t\u1ea1o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb. Vi\u1ec7c ph\u00e2n bi\u1ec7t n\u00e0y ph\u1ea3i \u0111\u01b0\u1ee3c ghi r\u00f5 trong b\u1ea3n v\u1ebd, kh\u00f4ng ch\u1ec9 trong cu\u1ed9c trao \u0111\u1ed5i v\u1edbi nh\u00e0 cung c\u1ea5p.<\/p>\n<h2 id=\"do-not-mistake-dpn-for-leakage-protection\">Kh\u00f4ng n\u00ean nh\u1ea7m l\u1eabn DPN v\u1edbi ch\u1ee9c n\u0103ng ch\u1ed1ng r\u00f2 r\u1ec9<\/h2>\n<p>Ch\u1ec9 ri\u00eang c\u00e1c ch\u1eef c\u00e1i tr\u00ean kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c vi\u1ec7c c\u00f3 t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 d\u00f2ng \u0111i\u1ec7n c\u00f2n l\u1ea1i. M\u1ed9t s\u1ed1 t\u00ean s\u1ea3n ph\u1ea9m b\u1ed5 sung th\u00eam c\u00e1c thu\u1eadt ng\u1eef nh\u01b0 Vigi ho\u1eb7c RCBO \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 kh\u00e1c. M\u1ed9t thi\u1ebft b\u1ecb MCB th\u00f4ng th\u01b0\u1eddng ch\u1ec9 b\u1ea3o v\u1ec7 ch\u1ed1ng d\u00f2ng qu\u00e1 d\u00f2ng trong ph\u1ea1m vi \u0111\u1ecbnh m\u1ee9c c\u1ee7a n\u00f3; ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 d\u00f2ng \u0111i\u1ec7n c\u00f2n l\u1ea1i ph\u1ea3i \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh r\u00f5 r\u00e0ng v\u00e0 ghi ch\u00e9p l\u1ea1i n\u1ebfu m\u1ea1ch c\u1ea7n thi\u1ebft.<\/p>\n<p>\u0110\u1ec3 bi\u1ebft th\u00f4ng tin v\u1ec1 m\u1eabu CHAC, h\u00e3y so s\u00e1nh v\u1edbi <a href=\"https:\/\/chac-electric.com\/vi\/mcb\/\">C\u1ea5u h\u00ecnh MCB<\/a> v\u1edbi <a href=\"https:\/\/chac-electric.com\/vi\/rcbo\/\">D\u00f2ng s\u1ea3n ph\u1ea9m RCBO<\/a>. X\u00e1c nh\u1eadn c\u00e1c ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 th\u1ef1c t\u1ebf, b\u1ed1 tr\u00ed c\u1ef1c v\u00e0 y\u00eau c\u1ea7u c\u1ee7a th\u1ecb tr\u01b0\u1eddng \u0111\u00edch. \u0110\u1eebng cho r\u1eb1ng m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn ho\u1eb7c s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ea7u n\u1ed1i t\u01b0\u01a1ng t\u1ef1 s\u1ebd l\u00e0m cho hai lo\u1ea1i s\u1ea3n ph\u1ea9m n\u00e0y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/chac-electric.com\/wp-content\/uploads\/2026\/09\/what-is-dpn-mcb-meaning-product-200k.webp\" alt=\"CHAC: Dpn Mcb Meaning l\u00e0 g\u00ec?\" loading=\"lazy\"\/><\/p>\n<h2 id=\"check-board-space-without-overlooking-the-busbar\">Ki\u1ec3m tra kh\u00f4ng gian b\u1ea3ng m\u1ea1ch m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t c\u1ea3nh quan c\u1ee7a thanh d\u1eabn \u0111i\u1ec7n<\/h2>\n<p>C\u00e1c thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m chi\u1ec1u r\u1ed9ng c\u1ea7n thi\u1ebft cho m\u1ed9t m\u1ea1ch, nh\u01b0ng \u201cDPN\u201d kh\u00f4ng \u0111\u1ea3m b\u1ea3o m\u1ed9t k\u00edch th\u01b0\u1edbc module chung nh\u1ea5t \u0111\u1ecbnh. H\u00e3y ki\u1ec3m tra b\u1ea3n v\u1ebd k\u00edch th\u01b0\u1edbc, v\u1ecb tr\u00ed c\u00e1c ti\u1ebfp \u0111i\u1ec3m, ph\u00eda trung t\u00ednh v\u00e0 b\u1ed1 tr\u00ed thanh bus \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t. M\u1ed9t thanh bus c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p v\u1ec1 m\u1eb7t v\u1eadt l\u00fd v\u1eabn c\u00f3 th\u1ec3 c\u00f3 ki\u1ec3u c\u1ef1c kh\u00f4ng \u0111\u00fang ho\u1eb7c giao di\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t.<\/p>\n<p>Cho ph\u00e9p c\u00f3 kh\u00f4ng gian s\u1eed d\u1ee5ng cho vi\u1ec7c u\u1ed1n d\u00e2y d\u1eabn, nh\u1eadn d\u1ea1ng v\u00e0 vi\u1ec7c ti\u1ebfp c\u1eadn trong t\u01b0\u01a1ng lai. M\u1ed9t h\u00e0ng d\u00e2y \u0111i\u1ec7n d\u00e0y \u0111\u1eb7c c\u00f3 th\u1ec3 khi\u1ebfn kh\u00f4ng c\u00f2n kh\u00f4ng gian \u0111\u1ec3 ki\u1ec3m tra c\u00e1c \u0111\u1ea7u n\u1ed1i, ngay c\u1ea3 khi s\u1ed1 l\u01b0\u1ee3ng module tr\u00f4ng h\u1ea5p d\u1eabn. H\u00e3y so s\u00e1nh t\u1ed5ng th\u1ec3 b\u1ed1 tr\u00ed l\u1eafp r\u00e1p, ch\u1ee9 kh\u00f4ng ch\u1ec9 l\u00e0 t\u1ed5ng s\u1ed1 chi\u1ec1u r\u1ed9ng c\u1ee7a c\u00e1c danh m\u1ee5c.<\/p>\n<h2 id=\"make-a-replacement-check-before-removing-the-old-unit\">H\u00e3y th\u1ef1c hi\u1ec7n ki\u1ec3m tra thay th\u1ebf tr\u01b0\u1edbc khi th\u00e1o r\u1eddi thi\u1ebft b\u1ecb c\u0169.<\/h2>\n<p>Ghi l\u1ea1i s\u1ed1 danh m\u1ee5c c\u1ee7a thi\u1ebft b\u1ecb c\u0169, c\u00e1c c\u1ef1c \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7, \u0111\u01b0\u1eddng cong, c\u1ea5p \u0111i\u1ec7n, s\u01a1 \u0111\u1ed3 \u0111\u1ea7u cu\u1ed1i v\u00e0 giao di\u1ec7n busbar. Sau \u0111\u00f3, so s\u00e1nh c\u00e1c h\u1ea1ng m\u1ee5c thay th\u1ebf \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t theo t\u1eebng h\u1ea1ng m\u1ee5c. <a href=\"https:\/\/chac-electric.com\/vi\/blog\/single-pole-mcb-vs-double-pole-mcb\/\">So s\u00e1nh gi\u1eefa thi\u1ebft b\u1ecb m\u1ed9t c\u1ef1c v\u00e0 thi\u1ebft b\u1ecb hai c\u1ef1c<\/a> Gi\u00fap t\u00e1ch s\u1ed1 l\u01b0\u1ee3ng d\u00e2y d\u1eabn kh\u1ecfi ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7.<\/p>\n<p>\u0110\u1ed1i v\u1edbi <strong>L\u1ef1a ch\u1ecdn b\u1ed9 ng\u1eaft \u0111i\u1ec7n DPN<\/strong>, H\u00e3y s\u1eed d\u1ee5ng t\u1eeb ng\u1eef ch\u00ednh x\u00e1c: m\u1ed9t thi\u1ebft b\u1ecb trung t\u00ednh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u1ed9c l\u1eadp ch\u1ed1ng l\u1ea1i d\u00f2ng \u0111i\u1ec7n qu\u00e1 cao. N\u1ebfu t\u00e0i li\u1ec7u h\u01b0\u1edbng d\u1eabn c\u0169 kh\u00f4ng c\u00f2n, h\u00e3y y\u00eau c\u1ea7u \u0111\u00e1nh gi\u00e1 thi\u1ebft k\u1ebf thay v\u00ec quy\u1ebft \u0111\u1ecbnh ch\u1ec9 d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc ho\u1eb7c nh\u00e3n \u1edf m\u1eb7t tr\u01b0\u1edbc. H\u00e3y l\u01b0u gi\u1eef b\u1ea3n ghi thi\u1ebft b\u1ecb m\u1edbi v\u00e0 l\u1ecbch tr\u00ecnh m\u1ea1ch s\u1eeda \u0111\u1ed5i c\u00f9ng nhau.<\/p>\n<h2>C\u1ea5u t\u1ea1o c\u1ee7a thi\u1ebft b\u1ecb 1P, 1P+N v\u00e0 thi\u1ebft b\u1ecb hai c\u1ef1c \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">S\u1eafp x\u1ebfp<\/th>\n<th scope=\"col\">Ch\u1ee9c n\u0103ng th\u00f4ng th\u01b0\u1eddng \u0111\u1ec3 x\u00e1c nh\u1eadn<\/th>\n<th scope=\"col\">Ki\u1ec3m tra nghi\u00eam ng\u1eb7t<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>B\u1ed9 chuy\u1ec3n m\u1ea1ch MCB 1P<\/td>\n<td>M\u1ed9t c\u1ef1c pha \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7<\/td>\n<td>Li\u1ec7u vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i trung l\u1eadp c\u00f3 c\u1ea7n thi\u1ebft kh\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 c\u00f4ng t\u1eafc MCB 1P+N<\/td>\n<td>Giai \u0111o\u1ea1n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 v\u00e0 trung t\u00ednh \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i<\/td>\n<td>H\u1ec7 th\u1ed1ng \u0111\u1ea7u n\u1ed1i v\u00e0 h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n trung t\u00ednh<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 c\u00f4ng t\u1eafc MCB c\u00f3 hai c\u1ef1c b\u1ea3o v\u1ec7<\/td>\n<td>Ch\u1ed1ng qu\u00e1 d\u00f2ng \u0111i\u1ec7n \u1edf c\u1ea3 hai c\u1ef1c<\/td>\n<td>Ph\u00f9 h\u1ee3p v\u1edbi lo\u1ea1i chuy\u1ebfn \u0111i v\u00e0 \u0111i\u1ec7n \u00e1p ph\u1ed5 bi\u1ebfn<\/td>\n<\/tr>\n<tr>\n<td>B\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng RCBO 1P+N<\/td>\n<td>Ch\u1ee9c n\u0103ng qu\u00e1 d\u00f2ng c\u1ed9ng v\u1edbi ch\u1ee9c n\u0103ng d\u00f2ng d\u01b0<\/td>\n<td>Lo\u1ea1i d\u00f2ng \u0111i\u1ec7n c\u00f2n l\u1ea1i v\u00e0 \u0111\u1ed9 nh\u1ea1y \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<section id=\"faq\">\n<h2>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3>DPN c\u00f3 \u00fd ngh\u0129a g\u00ec tr\u00ean m\u1ed9t chi\u1ebfc MCB?<\/h3>\n<p>Th\u00f4ng th\u01b0\u1eddng, n\u00f3 bi\u1ec3u th\u1ecb m\u1ed9t c\u1ef1c \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 c\u1ed9ng v\u1edbi m\u1ed9t c\u1ef1c trung t\u00ednh \u0111\u01b0\u1ee3c n\u1ed1i ti\u1ebfp, vi\u1ebft l\u00e0 1P+N. C\u1ea5u t\u1ea1o ch\u00ednh x\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e0 s\u1ea3n xu\u1ea5t, v\u00ec v\u1eady b\u1ea1n n\u00ean \u0111\u1ecdc b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt thay v\u00ec d\u1ef1a v\u00e0o ch\u1eef vi\u1ebft t\u1eaft.<\/p>\n<h3>M\u1ed9t c\u1ea7u ch\u00ec DPN MCB c\u00f3 b\u1ea3o v\u1ec7 d\u00e2y trung t\u00ednh kh\u00f4ng?<\/h3>\n<p>Th\u00f4ng th\u01b0\u1eddng c\u1ef1c trung t\u00ednh \u0111\u01b0\u1ee3c chuy\u1ec3n sang v\u1ecb tr\u00ed kh\u00e1c nh\u01b0ng kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u1ed9c l\u1eadp. H\u00e3y tu\u00e2n theo nh\u00e3n hi\u1ec7u c\u1ee7a thi\u1ebft b\u1ecb v\u00e0 m\u00e3 \u0111\u1ecba ph\u01b0\u01a1ng; \u0111\u1eebng bao gi\u1edd cho r\u1eb1ng c\u1ea3 hai c\u1ef1c \u0111\u1ec1u c\u00f3 m\u1ee9c b\u1ea3o v\u1ec7 t\u01b0\u01a1ng t\u1ef1 nhau.<\/p>\n<h3>T\u1ea1i sao l\u1ea1i s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb DPN trong h\u1ed9i \u0111\u1ed3ng qu\u1ea3n tr\u1ecb nh\u00e0 \u1edf?<\/h3>\n<p>Ch\u00fang c\u00f3 th\u1ec3 cung c\u1ea5p kh\u1ea3 n\u0103ng c\u00e1ch ly \u0111\u1ed3ng th\u1eddi v\u00e0 ri\u00eang bi\u1ec7t c\u00e1c pha v\u00e0 trung t\u00ednh khi h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n cho ph\u00e9p. Ti\u1ebft ki\u1ec7m kh\u00f4ng gian kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u00e1nh \u0111\u1ed5i b\u1eb1ng t\u00ednh ch\u1ecdn l\u1ecdc ho\u1eb7c \u0111\u1ed9 b\u1ec1n b\u1ec9.<\/p>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u1ed9t thi\u1ebft b\u1ecb MCB 2P v\u00e0 1P+N l\u00e0 g\u00ec?<\/h3>\n<p>Thi\u1ebft b\u1ecb 1P+N th\u00f4ng th\u01b0\u1eddng b\u1ea3o v\u1ec7 pha kh\u1ecfi hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 d\u00f2ng v\u00e0 chuy\u1ec3n \u0111\u1ed5i pha trung t\u00ednh, trong khi thi\u1ebft b\u1ecb hai c\u1ef1c \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 c\u1ea3m nh\u1eadn hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 d\u00f2ng \u1edf c\u1ea3 hai c\u1ef1c. C\u00e1c thu\u1eadt ng\u1eef c\u1ee7a s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 kh\u00e1c nhau, v\u00ec v\u1eady h\u00e3y ki\u1ec3m tra s\u1ed1 l\u01b0\u1ee3ng c\u1ef1c \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7, c\u1ea5u t\u1ea1o ki\u1ec3u ho\u1ea1t \u0111\u1ed9ng v\u00e0 s\u01a1 \u0111\u1ed3 m\u1ea1ch.<\/p>\n<h3>DP v\u00e0 MCB c\u00f3 gi\u1ed1ng nhau kh\u00f4ng?<\/h3>\n<p>Kh\u00f4ng. DP m\u00f4 t\u1ea3 c\u1ea5u h\u00ecnh hai c\u1ef1c; MCB m\u00f4 t\u1ea3 b\u1ed9 ng\u1eaft m\u1ea1ch thu nh\u1ecf. B\u1ed9 ng\u1eaft hai c\u1ef1c c\u00f3 th\u1ec3 kh\u00f4ng c\u00f3 ch\u1ee9c n\u0103ng ng\u1eaft d\u00f2ng qu\u00e1 d\u00f2ng n\u00e0o c\u1ea3. X\u00e1c \u0111\u1ecbnh c\u1ea5u h\u00ecnh chuy\u1ec3n m\u1ea1ch v\u00e0 ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 l\u00e0 c\u00e1c b\u1ed9 ph\u1eadn ri\u00eang bi\u1ec7t trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/p>\n<\/section>\n<h2>Tham kh\u1ea3o<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.se.com\/uk\/en\/product\/19266\/dpn-circuit-breaker-dpn-n-1p-+-n-10a-c-curve\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Schneider Electric: v\u00ed d\u1ee5 v\u1ec1 s\u1ea3n ph\u1ea9m DPN N 1P+N c\u0169<\/a><\/li>\n<li><a href=\"https:\/\/www.electrical-installation.org\/enwiki\/Practical_values_for_a_protective_scheme\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">H\u01b0\u1edbng d\u1eabn l\u1eafp \u0111\u1eb7t \u0111i\u1ec7n c\u1ee7a Schneider Electric: Y\u00eau c\u1ea7u v\u1ec1 b\u1ea3o v\u1ec7<\/a><\/li>\n<\/ul>\n<p>\u0110\u1ed1i v\u1edbi m\u1ed9t \u0111\u00e1nh gi\u00e1 c\u1ee5 th\u1ec3 v\u1ec1 m\u00f4 h\u00ecnh, <a href=\"https:\/\/chac-electric.com\/vi\/hay-lien-he-voi-chung-toi\/\">li\u00ean h\u1ec7 \u0110i\u1ec7n l\u1ef1c CHAC<\/a> c\u00f9ng v\u1edbi s\u01a1 \u0111\u1ed3 m\u1ea1ch, \u0111i\u1ec7n \u00e1p cung c\u1ea5p, th\u00f4ng tin v\u1ec1 t\u1ea3i v\u00e0 y\u00eau c\u1ea7u c\u1ee7a th\u1ecb tr\u01b0\u1eddng \u0111\u00edch.<\/p>","protected":false},"excerpt":{"rendered":"<p>H\u01b0\u1edbng d\u1eabn n\u00e0y gi\u1ea3i th\u00edch v\u1ec1 vi\u1ec7c x\u00e2y d\u1ef1ng DPN 1P+N c\u00f9ng v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn, h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n, ph\u1ed1i h\u1ee3p v\u00e0 ki\u1ec3m tra tu\u00e2n th\u1ee7 th\u1ef1c t\u1ebf d\u00e0nh cho c\u00e1c nh\u00e0 mua \u0111i\u1ec7n tr\u00ean to\u00e0n c\u1ea7u.<\/p>","protected":false},"author":1,"featured_media":4245,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4247","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"acf":[],"_links":{"self":[{"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/posts\/4247","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/comments?post=4247"}],"version-history":[{"count":4,"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/posts\/4247\/revisions"}],"predecessor-version":[{"id":5175,"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/posts\/4247\/revisions\/5175"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/media\/4245"}],"wp:attachment":[{"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/media?parent=4247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/categories?post=4247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chac-electric.com\/vi\/wp-json\/wp\/v2\/tags?post=4247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}