{"id":14164,"date":"2026-08-10T23:04:56","date_gmt":"2026-08-10T23:04:56","guid":{"rendered":"https:\/\/essfuse.com\/?p=14164"},"modified":"2026-10-26T06:13:42","modified_gmt":"2026-10-26T06:13:42","slug":"huong-dan-chon-kich-thuoc-cau-chi-pv-dang-thanh","status":"publish","type":"post","link":"https:\/\/essfuse.com\/vi\/slug-pv-fuse-sizing-guide\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn ch\u1ecdn c\u1ea7u ch\u00ec ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi: C\u00e1ch l\u1ef1a ch\u1ecdn c\u1ea7u ch\u00ec ph\u00f9 h\u1ee3p"},"content":{"rendered":"<h1 class=\"wp-block-heading\">H\u01b0\u1edbng d\u1eabn ch\u1ecdn c\u1ea7u ch\u00ec PV: C\u00e1ch ch\u1ecdn c\u1ea7u ch\u00ec ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Gi\u1edbi thi\u1ec7u<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c l\u1ef1a ch\u1ecdn k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n m\u1eb7t tr\u1eddi (PV) l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u1ea3 s\u1ef1 an to\u00e0n v\u00e0 hi\u1ec7u su\u1ea5t. C\u1ea7u ch\u00ec qu\u00e1 nh\u1ecf s\u1ebd g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ng\u1eaft m\u1ea1ch kh\u00f4ng c\u1ea7n thi\u1ebft v\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng \u0111\u00e1ng c\u00f3, trong khi c\u1ea7u ch\u00ec qu\u00e1 l\u1edbn l\u1ea1i kh\u00f4ng cung c\u1ea5p \u0111\u1ee7 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i c\u00e1c s\u1ef1 c\u1ed1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n t\u1eebng b\u01b0\u1edbc m\u1ed9t c\u00e1ch \u0111\u1ea7y \u0111\u1ee7. <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV<\/a> Quy tr\u00ecnh t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc, bao g\u1ed3m c\u1ea7u ch\u00ec c\u1ea5p d\u00e2y, c\u1ea7u ch\u00ec h\u1ed9p n\u1ed1i v\u00e0 c\u1ea7u ch\u00ec t\u00e1i k\u1ebft h\u1ee3p cho c\u1ea3 h\u1ec7 th\u1ed1ng DC 1000V v\u00e0 1500V.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u00f9 b\u1ea1n l\u00e0 nh\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t hay k\u1ef9 s\u01b0 \u0111i\u1ec7n, h\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd gi\u00fap b\u1ea1n \u0111\u01b0a ra nh\u1eefng quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t v\u1ec1... <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV<\/a> L\u1ef1a ch\u1ecdn v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n NEC v\u00e0 UL.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao h\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi c\u1ea7n c\u1ea7u ch\u00ec \u0111\u1eb7c bi\u1ec7t?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Nh\u1eefng Th\u00e1ch Th\u1ee9c \u0110\u1eb7c Th\u1ef1 c\u1ee7a H\u1ec7 Th\u1ed1ng N\u0103ng L\u01b0\u1ee3ng M\u1eb7t Tr\u1eddi DC<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi (PV) \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c b\u1ea3o v\u1ec7 \u0111\u1ed9c \u0111\u00e1o, kh\u00e1c bi\u1ec7t so v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec7n xoay chi\u1ec1u truy\u1ec1n th\u1ed1ng:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>C\u00e1c h\u1ed3 quang \u0111i\u1ec7n m\u1ed9t chi\u1ec1u kh\u00f3 d\u1eadp t\u1eaft h\u01a1n.<\/strong>\n<ol class=\"wp-block-list\">\n<li>Kh\u00e1c v\u1edbi d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u, d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u kh\u00f4ng t\u1ef1 nhi\u00ean \u0111i qua \u0111i\u1ec3m 0.<\/li>\n\n\n\n<li>H\u1ed3 quang DC \u1ed5n \u0111\u1ecbnh h\u01a1n v\u00e0 kh\u00f3 b\u1ecb ng\u1eaft h\u01a1n.<\/li>\n\n\n\n<li>Y\u00eau c\u1ea7u s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec chuy\u00ean d\u1ee5ng \u0111\u1ecbnh m\u1ee9c DC v\u1edbi thi\u1ebft k\u1ebf d\u1eadp t\u1eaft h\u1ed3 quang.<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li><strong>D\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 th\u1ea5p<\/strong>\n<ol class=\"wp-block-list\">\n<li>T\u1ea5m pin m\u1eb7t tr\u1eddi c\u00f3 \u0111i\u1ec7n tr\u1edf trong t\u01b0\u01a1ng \u0111\u1ed1i cao.<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 ch\u1ec9 g\u1ea5p 2-3 l\u1ea7n d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady \u1edf c\u00e1c m\u1ee9c s\u1ef1 c\u1ed1 th\u1ea5p h\u01a1n n\u00e0y.<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li><strong>Bi\u1ebfn \u0111\u1ed9ng nhi\u1ec7t \u0111\u1ed9 r\u1ed9ng<\/strong>\n<ol class=\"wp-block-list\">\n<li>C\u00e1c c\u00f4ng tr\u00ecnh l\u1eafp \u0111\u1eb7t ngo\u00e0i tr\u1eddi ph\u1ea3i ch\u1ecbu s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 kh\u1eafc nghi\u1ec7t.<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n \u0111\u1ea7u ra c\u1ee7a t\u1ea5m pin thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9<\/li>\n\n\n\n<li>Hi\u1ec7u su\u1ea5t c\u1ee7a c\u1ea7u ch\u00ec ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9.<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li><strong>Ki\u1ebfn tr\u00fac d\u00e2y<\/strong>\n<ol class=\"wp-block-list\">\n<li>Nhi\u1ec1u t\u1ea5m pin \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i n\u1ed1i ti\u1ebfp nhau (chu\u1ed7i).<\/li>\n\n\n\n<li>Nhi\u1ec1u chu\u1ed7i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i song song (m\u1ea3ng)<\/li>\n\n\n\n<li>C\u1ea7n c\u00f3 s\u1ef1 b\u1ea3o v\u1ec7 \u1edf nhi\u1ec1u c\u1ea5p \u0111\u1ed9: c\u1ea5p \u0111\u1ed9 chu\u1ed7i, c\u1ea5p \u0111\u1ed9 b\u1ed9 k\u1ebft h\u1ee3p, c\u1ea5p \u0111\u1ed9 b\u1ed9 bi\u1ebfn t\u1ea7n.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110i\u1ec1u g\u00ec s\u1ebd x\u1ea3y ra n\u1ebfu kh\u00f4ng h\u00e0n k\u00edn \u0111\u00fang c\u00e1ch?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu kh\u00f4ng s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec PV c\u00f3 k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p, b\u1ea1n s\u1ebd g\u1eb7p r\u1ee7i ro:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>H\u01b0 h\u1ecfng b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n<\/strong>D\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u00e1c t\u1ea5m pin m\u1eb7t tr\u1eddi, ti\u1ec1m \u1ea9n nguy c\u01a1 g\u00e2y ra c\u00e1c \u0111i\u1ec3m n\u00f3ng ho\u1eb7c bong tr\u00f3c.<\/li>\n\n\n\n<li><strong>Nguy c\u01a1 ch\u00e1y n\u1ed5<\/strong>C\u00e1c s\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn qu\u00e1 nhi\u1ec7t v\u00e0 ch\u00e1y n\u1ed5.<\/li>\n\n\n\n<li><strong>Th\u1eddi gian h\u1ec7 th\u1ed1ng ng\u1eebng ho\u1ea1t \u0111\u1ed9ng<\/strong>Vi\u1ec7c v\u1eadn h\u00e0nh c\u1ea7u ch\u00ec kh\u00f4ng c\u1ea7n thi\u1ebft l\u00e0m gi\u1ea3m s\u1ea3n l\u01b0\u1ee3ng \u0111i\u1ec7n.<\/li>\n\n\n\n<li><strong>Vi ph\u1ea1m quy \u0111\u1ecbnh<\/strong>Vi\u1ec7c kh\u00f4ng tu\u00e2n th\u1ee7 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a NEC c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn vi\u1ec7c kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u trong c\u00e1c cu\u1ed9c ki\u1ec3m tra.<\/li>\n\n\n\n<li><strong>V\u1ea5n \u0111\u1ec1 b\u1ea3o h\u00e0nh<\/strong>Vi\u1ec7c b\u1ea3o v\u1ec7 kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 l\u00e0m m\u1ea5t hi\u1ec7u l\u1ef1c b\u1ea3o h\u00e0nh c\u1ee7a t\u1ea5m pin ho\u1eb7c b\u1ed9 bi\u1ebfn t\u1ea7n.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c lo\u1ea1i <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV<\/a><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec lo\u1ea1i gPV<\/a> (UL 248-19)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Lo\u1ea1i c\u1ea7u ch\u00ec ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi l\u00e0... <strong><a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">c\u1ea7u ch\u00ec lo\u1ea1i gPV<\/a><\/strong>, \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn theo <strong>UL 248-19<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">c\u1ea7u ch\u00ec gPV<\/a><\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B\u1ea3o v\u1ec7 to\u00e0n di\u1ec7n (c\u1ea3 qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch)<\/li>\n\n\n\n<li>\u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho c\u00e1c \u1ee9ng d\u1ee5ng quang \u0111i\u1ec7n.<\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c DC l\u00ean \u0111\u1ebfn 1500V DC<\/li>\n\n\n\n<li>\u0110\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho \u0111i\u1ec1u ki\u1ec7n d\u00f2ng ng\u1eafn m\u1ea1ch th\u1ea5p.<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng chu k\u1ef3 cao<\/li>\n\n\n\n<li>Hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Th\u00f4ng s\u1ed1 c\u1ea7u ch\u00ec c\u1ea7n xem x\u00e9t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Khi ch\u1ecdn c\u1ea7u ch\u00ec PV, h\u00e3y ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c th\u00f4ng s\u1ed1 sau:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>X\u1ebfp h\u1ea1ng<\/td><td>S\u1ef1 mi\u00eau t\u1ea3<\/td><td>Gi\u00e1 tr\u1ecb \u0111i\u1ec3n h\u00ecnh<\/td><\/tr><tr><td><strong>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c<\/strong><\/td><td>\u0110i\u1ec7n \u00e1p DC t\u1ed1i \u0111a m\u00e0 c\u1ea7u ch\u00ec c\u00f3 th\u1ec3 ng\u1eaft m\u1ed9t c\u00e1ch an to\u00e0n<\/td><td>600V, 1000V, 1500V DC<\/td><\/tr><tr><td><strong>X\u1ebfp h\u1ea1ng hi\u1ec7n t\u1ea1i<\/strong><\/td><td>D\u00f2ng \u0111i\u1ec7n li\u00ean t\u1ee5c t\u1ed1i \u0111a<\/td><td>2A \u0111\u1ebfn 63A (m\u1ee9c \u0111\u1ed9 d\u00e2y)<\/td><\/tr><tr><td><strong>V\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng<\/strong><\/td><td>D\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch t\u1ed1i \u0111a m\u00e0 c\u1ea7u ch\u00ec c\u00f3 th\u1ec3 ng\u1eaft.<\/td><td>D\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u t\u1eeb 10kA \u0111\u1ebfn 50kA<\/td><\/tr><tr><td><strong>X\u1ebfp h\u1ea1ng I\u00b2t<\/strong><\/td><td>T\u1ed5ng n\u0103ng l\u01b0\u1ee3ng truy\u1ec1n qua<\/td><td>T\u00f9y thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc v\u00e0 lo\u1ea1i<\/td><\/tr><tr><td><strong>Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9<\/strong><\/td><td>Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/td><td>-40\u00b0C \u0111\u1ebfn +85\u00b0C (th\u00f4ng th\u01b0\u1eddng)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Chung <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV<\/a> C\u00e1c y\u1ebfu t\u1ed1 h\u00ecnh th\u1ee9c<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>C\u1ea7u ch\u00ec d\u1ea1ng h\u1ed9p (10x38mm)<\/strong>\n<ol class=\"wp-block-list\">\n<li>Th\u01b0\u1eddng d\u00f9ng nh\u1ea5t \u0111\u1ec3 b\u1ea3o v\u1ec7 \u1edf c\u1ea5p \u0111\u1ed9 d\u00e2y \u0111\u00e0n.<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c: 1A \u0111\u1ebfn 32A<\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c: l\u00ean \u0111\u1ebfn 1000V DC (m\u1ed9t s\u1ed1 lo\u1ea1i l\u00ean \u0111\u1ebfn 1500V)<\/li>\n\n\n\n<li>S\u1eed d\u1ee5ng v\u1edbi h\u1ed9p c\u1ea7u ch\u00ec ho\u1eb7c gi\u00e1 \u0111\u1ee1 g\u1eafn ray DIN.<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li><strong>C\u1ea7u ch\u00ec d\u1ea1ng h\u1ed9p (14x51mm \/ 22x58mm)<\/strong>\n<ol class=\"wp-block-list\">\n<li>X\u1ebfp h\u1ea1ng d\u00f2ng \u0111i\u1ec7n cao h\u01a1n<\/li>\n\n\n\n<li>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong h\u1ed9p k\u1ebft h\u1ee3p v\u00e0 h\u1ed9p t\u00e1i k\u1ebft h\u1ee3p.<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c: 32A \u0111\u1ebfn 125A<\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c: l\u00ean \u0111\u1ebfn 1500V DC<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li><strong>C\u1ea7u ch\u00ec lo\u1ea1i NH<\/strong>\n<ol class=\"wp-block-list\">\n<li>\u0110\u1ecbnh d\u1ea1ng l\u1edbn h\u01a1n cho d\u00f2ng \u0111i\u1ec7n cao h\u01a1n<\/li>\n\n\n\n<li>\u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf c\u1ea5p \u0111\u1ed9 bi\u1ebfn t\u1ea7n v\u00e0 h\u1ec7 th\u1ed1ng quy m\u00f4 l\u1edbn.<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c hi\u1ec7n t\u1ea1i: l\u00ean \u0111\u1ebfn 630A+<\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c: l\u00ean \u0111\u1ebfn 1500V DC<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV<\/a> Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n v\u1ec1 k\u00edch th\u01b0\u1edbc<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c y\u00eau c\u1ea7u ch\u00ednh c\u1ee7a NEC<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1i <strong>B\u1ed9 lu\u1eadt \u0111i\u1ec7n qu\u1ed1c gia (NEC)<\/strong> \u0110\u01b0a ra c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 v\u1ec1 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n. C\u00e1c ph\u1ea7n ch\u00ednh bao g\u1ed3m:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>NEC 690.9<\/strong>B\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng<\/li>\n\n\n\n<li><strong>NEC 690.8<\/strong>T\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n trong m\u1ea1ch<\/li>\n\n\n\n<li><strong>NEC 240<\/strong>: C\u00e1c y\u00eau c\u1ea7u chung v\u1ec1 b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Quy t\u1eafc 1,25\u00d7<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n nh\u1ea5t \u0111\u1ec3 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec PV l\u00e0: <strong>Quy t\u1eafc 1,25\u00d7<\/strong> Tr\u00edch t\u1eeb NEC 690.9:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">C\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng ph\u1ea3i c\u00f3 c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c kh\u00f4ng th\u1ea5p h\u01a1n 125% d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a c\u1ee7a m\u1ea1ch.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00f4ng th\u1ee9c<\/strong>: <code>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec \u2265 I_sc \u00d7 1,25<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede \u0111\u00e2u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>I_sc = D\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch c\u1ee7a m\u00f4-\u0111un\/chu\u1ed7i PV<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0ng khoan \u0111\u00e3 \u2014 m\u1ecdi chuy\u1ec7n kh\u00f4ng \u0111\u01a1n gi\u1ea3n nh\u01b0 v\u1eady. H\u00e3y c\u00f9ng xem ph\u00e9p t\u00ednh \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc t\u1eebng b\u01b0\u1edbc<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 quy tr\u00ecnh ho\u00e0n ch\u1ec9nh \u0111\u1ec3 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec cho chu\u1ed7i PV:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 1: T\u00ecm d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch c\u1ee7a m\u00f4-\u0111un (I_sc)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y xem b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a t\u1ea5m pin m\u1eb7t tr\u1eddi \u0111\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft. <strong>I_sc<\/strong> (d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch) \u1edf \u0110i\u1ec1u ki\u1ec7n Th\u1eed nghi\u1ec7m Ti\u00eau chu\u1ea9n (STC).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>I_sc = 10,5 A (theo b\u1ea3ng d\u1eef li\u1ec7u)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 2: T\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a c\u1ee7a c\u1ea7u ch\u00ec n\u1ed1i ti\u1ebfp<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Theo NEC 690.9(B), \u0111\u1ecbnh m\u1ee9c t\u1ed1i \u0111a c\u1ee7a thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng cho m\u1ea1ch ngu\u1ed3n PV l\u00e0:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i \u0111a = I_sc \u00d7 1,25<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i \u0111a = 10,5 A \u00d7 1,25 = 13,125 A<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec T\u1ed0I \u0110A. B\u1ea1n kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec l\u1edbn h\u01a1n k\u00edch th\u01b0\u1edbc n\u00e0y.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 3: X\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i thi\u1ec3u<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea7u ch\u00ec ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a m\u00e0 kh\u00f4ng g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ho\u1ea1t \u0111\u1ed9ng b\u1ea5t th\u01b0\u1eddng. D\u00f2ng \u0111i\u1ec7n c\u00f4ng su\u1ea5t t\u1ed1i \u0111a (I_mp) l\u00e0 d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i thi\u1ec3u = I_mp \u00d7 1,25 (cho nhi\u1ec7t \u0111\u1ed9 v\u00e0 bi\u00ean \u0111\u1ed9 an to\u00e0n)<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>I_mp = 9,8 A<\/li>\n\n\n\n<li>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i thi\u1ec3u = 9,8 A \u00d7 1,25 = 12,25 A<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">B\u01b0\u1edbc 4: Ch\u1ecdn k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec ti\u00eau chu\u1ea9n<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ecdn lo\u1ea1i c\u1ea7u ch\u00ec ti\u00eau chu\u1ea9n c\u00f3 \u0111\u1ecbnh m\u1ee9c n\u1eb1m gi\u1eefa m\u1ee9c t\u1ed1i thi\u1ec3u v\u00e0 m\u1ee9c t\u1ed1i \u0111a:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i thi\u1ec3u \u2264 \u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec \u0111\u00e3 ch\u1ecdn \u2264 \u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i \u0111a<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u1ed1i thi\u1ec3u: 12,25 A<\/li>\n\n\n\n<li>T\u1ed1i \u0111a: 13,125 A<\/li>\n\n\n\n<li>K\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec ti\u00eau chu\u1ea9n trong ph\u1ea1m vi n\u00e0y: 12A, 13A, 15A\u2026<\/li>\n\n\n\n<li><strong>C\u1ea7u ch\u00ec \u0111\u01b0\u1ee3c ch\u1ecdn: 12A ho\u1eb7c 13A<\/strong> (C\u1ea3 hai \u0111\u1ec1u \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quan tr\u1ecdng<\/strong>N\u1ebfu kh\u00f4ng c\u00f3 k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n n\u00e0o n\u1eb1m trong ph\u1ea1m vi cho ph\u00e9p, h\u00e3y ch\u1ecdn k\u00edch th\u01b0\u1edbc NH\u1ece H\u01a0N k\u00edch th\u01b0\u1edbc t\u1ed1i \u0111a. Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 k\u00edch th\u01b0\u1edbc t\u1ed1i \u0111a.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">T\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc chi ti\u1ebft<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">K\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec \u1edf c\u1ea5p \u0111\u1ed9 d\u00e2y<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea7u ch\u00ec c\u1ea5p chu\u1ed7i b\u1ea3o v\u1ec7 t\u1eebng chu\u1ed7i PV ri\u00eang l\u1ebb kh\u1ecfi c\u00e1c l\u1ed7i d\u00f2ng \u0111i\u1ec7n ng\u01b0\u1ee3c.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">C\u00f4ng th\u1ee9c ho\u00e0n ch\u1ec9nh<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">` I_string_fuse = I_sc_module \u00d7 N_series? Kh\u00f4ng \u2014 \u0111\u1ee3i \u0111\u00e3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi m\u1ed9t chu\u1ed7i c\u00e1c t\u1ea5m b\u1ea3ng n\u1ed1i ti\u1ebfp nhau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110i\u1ec7n \u00e1p c\u1ed9ng d\u1ed3n<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n hi\u1ec7n t\u1ea1i v\u1eabn gi\u1eef nguy\u00ean.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec v\u1eady: I_sc_string = I_sc_module (t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u01a1n)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Do \u0111\u00f3: \u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec chu\u1ed7i t\u1ed1i \u0111a = I_sc_module \u00d7 1,25 `<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">V\u00ed d\u1ee5 t\u00ednh to\u00e1n (H\u1ec7 th\u1ed1ng 1000V)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u01b0\u1ee3c cho<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u1ea5m pin: \u0111\u01a1n tinh th\u1ec3 400W<\/li>\n\n\n\n<li>I_sc = 10,5 A<\/li>\n\n\n\n<li>I_mp = 9,8 A<\/li>\n\n\n\n<li>20 t\u1ea5m m\u1ed7i d\u00e2y (chu\u1ed7i)<\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng: 1000V DC<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00ednh to\u00e1n<\/strong>:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>D\u00f2ng \u0111i\u1ec7n I_sc tr\u00ean m\u1ed7i d\u00e2y = 10,5 A (t\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t t\u1ea5m)<\/li>\n\n\n\n<li>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i \u0111a = 10,5 \u00d7 1,25 = 13,125 A<\/li>\n\n\n\n<li>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i thi\u1ec3u = 9,8 \u00d7 1,25 = 12,25 A<\/li>\n\n\n\n<li>K\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec ti\u00eau chu\u1ea9n: 10A, 12A, 15A, 20A\u2026<\/li>\n\n\n\n<li><strong>\u0110\u00e3 ch\u1ecdn: C\u1ea7u ch\u00ec gPV 12A ho\u1eb7c 13A<\/strong><\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c: T\u1ed1i thi\u1ec3u 1000V DC<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">V\u00ed d\u1ee5 t\u00ednh to\u00e1n (H\u1ec7 th\u1ed1ng 1500V)<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u01b0\u1ee3c cho<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u1ea5m pin: 600W hai m\u1eb7t<\/li>\n\n\n\n<li>I_sc = 18,2 A<\/li>\n\n\n\n<li>I_mp = 17.0 A<\/li>\n\n\n\n<li>25 t\u1ea5m m\u1ed7i d\u00e2y (lo\u1ea1t)<\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng: 1500V DC<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00ednh to\u00e1n<\/strong>:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>I_sc tr\u00ean m\u1ed7i chu\u1ed7i = 18,2 A<\/li>\n\n\n\n<li>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i \u0111a = 18,2 \u00d7 1,25 = 22,75 A<\/li>\n\n\n\n<li>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec t\u1ed1i thi\u1ec3u = 17,0 \u00d7 1,25 = 21,25 A<\/li>\n\n\n\n<li>K\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec ti\u00eau chu\u1ea9n: 20A, 25A, 32A\u2026<\/li>\n\n\n\n<li><strong>\u0110\u00e3 ch\u1ecdn: C\u1ea7u ch\u00ec gPV 20A<\/strong> (k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n ti\u1ebfp theo b\u00ean d\u01b0\u1edbi k\u00edch th\u01b0\u1edbc t\u1ed1i \u0111a)<\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c: t\u1ed1i thi\u1ec3u 1500V DC<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">K\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec h\u1ed9p n\u1ed1i<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u1ea7u ch\u00ec trong h\u1ed9p n\u1ed1i b\u1ea3o v\u1ec7 \u0111\u1ea7u ra t\u1ed5ng h\u1ee3p c\u1ee7a nhi\u1ec1u chu\u1ed7i t\u00edn hi\u1ec7u.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">C\u00f4ng th\u1ee9c<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><code>I_combiner_fuse = I_sc_string \u00d7 N_parallel_strings \u00d7 1.25<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u1ede \u0111\u00e2u:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N_parallel_strings = s\u1ed1 l\u01b0\u1ee3ng chu\u1ed7i \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">V\u00ed d\u1ee5<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u0110\u01b0\u1ee3c cho<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>12 d\u00e2y m\u1ed7i h\u1ed9p k\u1ebft h\u1ee3p<\/li>\n\n\n\n<li>M\u1ed7i chu\u1ed7i I_sc = 10,5 A<\/li>\n\n\n\n<li>T\u00edn hi\u1ec7u \u0111\u1ea7u ra c\u1ee7a b\u1ed9 k\u1ebft h\u1ee3p c\u1ea5p cho b\u1ed9 bi\u1ebfn t\u1ea7n.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00ednh to\u00e1n<\/strong>:<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>T\u1ed5ng d\u00f2ng \u0111i\u1ec7n I_sc = 10,5 A \u00d7 12 = 126 A<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a c\u1ee7a c\u1ea7u ch\u00ec k\u1ebft h\u1ee3p = 126 \u00d7 1,25 = 157,5 A<\/li>\n\n\n\n<li><strong>\u0110\u00e3 ch\u1ecdn: C\u1ea7u ch\u00ec gPV 160A<\/strong> (ho\u1eb7c k\u00edch th\u01b0\u1edbc ti\u00eau chu\u1ea9n ti\u1ebfp theo)<\/li>\n\n\n\n<li>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c: 1000V ho\u1eb7c 1500V DC (ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng)<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">K\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec \u0111\u1ea7u v\u00e0o bi\u1ebfn t\u1ea7n<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea7u ch\u00ec \u0111\u1ea7u v\u00e0o bi\u1ebfn t\u1ea7n b\u1ea3o v\u1ec7 \u0111\u1ea7u v\u00e0o DC c\u1ee7a bi\u1ebfn t\u1ea7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n xem x\u00e9t<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch t\u1ed1i \u0111a t\u1eeb m\u1ea3ng<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n \u0111\u1ea7u v\u00e0o DC t\u1ed1i \u0111a c\u1ee7a bi\u1ebfn t\u1ea7n<\/li>\n\n\n\n<li>C\u00e0i \u0111\u1eb7t b\u1ea3o v\u1ec7 b\u00ean trong c\u1ee7a bi\u1ebfn t\u1ea7n<\/li>\n\n\n\n<li>Ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c c\u1ea7u ch\u00ec ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>H\u01b0\u1edbng d\u1eabn chung<\/strong>: <code>\u0110\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec bi\u1ebfn t\u1ea7n \u2265 D\u00f2ng ng\u1eafn m\u1ea1ch t\u1ed1i \u0111a c\u1ee7a m\u1ea3ng l\u01b0u tr\u1eef nh\u01b0ng c\u0169ng \u2264 \u0110\u1ecbnh m\u1ee9c \u0111\u1ea7u v\u00e0o DC t\u1ed1i \u0111a c\u1ee7a bi\u1ebfn t\u1ea7n<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Gi\u1ea3m c\u00f4ng su\u1ea5t theo nhi\u1ec7t \u0111\u1ed9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i sao nhi\u1ec7t \u0111\u1ed9 l\u1ea1i quan tr\u1ecdng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hi\u1ec7u su\u1ea5t c\u1ee7a c\u1ea7u ch\u00ec b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng. \u1ede nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B\u1ed9 ph\u1eadn c\u1ea7u ch\u00ec ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i d\u00f2ng \u0111i\u1ec7n hi\u1ec7u d\u1ee5ng gi\u1ea3m<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u1edf d\u00f2ng \u0111i\u1ec7n th\u1ea5p h\u01a1n \u0111\u1ecbnh m\u1ee9c.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u1ea7u ch\u00ec PV th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u1ed9p \u0111\u1ea5u n\u1ed1i ngo\u00e0i tr\u1eddi (c\u00f3 th\u1ec3 \u0111\u1ea1t nhi\u1ec7t \u0111\u1ed9 b\u00ean trong t\u1eeb 60-80\u00b0C)<\/li>\n\n\n\n<li>Thi\u1ebft b\u1ecb g\u1eafn tr\u00ean m\u00e1i nh\u00e0<\/li>\n\n\n\n<li>Kh\u00ed h\u1eadu sa m\u1ea1c ho\u1eb7c nhi\u1ec7t \u0111\u1edbi<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u0110\u01b0\u1eddng cong gi\u1ea3m c\u00f4ng su\u1ea5t theo nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh<\/td><td>Kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i hi\u1ec7n t\u1ea1i<\/td><\/tr><tr><td>-40\u00b0C<\/td><td>~115%<\/td><\/tr><tr><td>25\u00b0C (tham chi\u1ebfu)<\/td><td>100%<\/td><\/tr><tr><td>40\u00b0C<\/td><td>~95%<\/td><\/tr><tr><td>50\u00b0C<\/td><td>~90%<\/td><\/tr><tr><td>60\u00b0C<\/td><td>~85%<\/td><\/tr><tr><td>70\u00b0C<\/td><td>~78%<\/td><\/tr><tr><td>80\u00b0C<\/td><td>~70%<\/td><\/tr><tr><td>85\u00b0C<\/td><td>~65%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>(C\u00e1c gi\u00e1 tr\u1ecb ch\u1ec9 mang t\u00ednh ch\u1ea5t \u01b0\u1edbc l\u01b0\u1ee3ng \u2014 vui l\u00f2ng tham kh\u1ea3o b\u1ea3ng d\u1eef li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 bi\u1ebft gi\u00e1 tr\u1ecb ch\u00ednh x\u00e1c)<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1ch \u00e1p d\u1ee5ng gi\u1ea3m c\u00f4ng su\u1ea5t theo nhi\u1ec7t \u0111\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1<\/strong>X\u00e1c \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng t\u1ed1i \u0111a t\u1ea1i v\u1ecb tr\u00ed c\u1ea7u ch\u00ec. <strong>B\u01b0\u1edbc 2<\/strong>T\u00ecm h\u1ec7 s\u1ed1 gi\u1ea3m c\u00f4ng su\u1ea5t t\u1eeb \u0111\u01b0\u1eddng cong c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t. <strong>B\u01b0\u1edbc 3<\/strong>\u0110i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec c\u1ea7n thi\u1ebft cho ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00ed d\u1ee5<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00f2ng \u0111i\u1ec7n y\u00eau c\u1ea7u: 12 A<\/li>\n\n\n\n<li>Nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng t\u1ed1i \u0111a: 60\u00b0C<\/li>\n\n\n\n<li>H\u1ec7 s\u1ed1 gi\u1ea3m c\u00f4ng su\u1ea5t \u1edf 60\u00b0C: 0,85 (85%)<\/li>\n\n\n\n<li>D\u00f2ng \u0111i\u1ec7n y\u00eau c\u1ea7u \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh: 12 A \u00f7 0,85 = 14,1 A<\/li>\n\n\n\n<li><strong>Ch\u1ecdn c\u1ea7u ch\u00ec 15A<\/strong> (n\u1ebfu v\u1eabn d\u01b0\u1edbi m\u1ee9c t\u1ed1i \u0111a cho ph\u00e9p)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quan tr\u1ecdng<\/strong>Lu\u00f4n ki\u1ec3m tra xem \u0111\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec gi\u1ea3m t\u1ea3i c\u00f3 c\u00f2n th\u1ea5p h\u01a1n m\u1ee9c t\u1ed1i \u0111a cho ph\u00e9p theo NEC 690.9 hay kh\u00f4ng.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Chung <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV<\/a> C\u00e1c k\u1ecbch b\u1ea3n \u0111\u1ecbnh c\u1ee1<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ecbch b\u1ea3n 1: H\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi tr\u00ean m\u00e1i nh\u00e0 d\u00e2n d\u1ee5ng (6kW)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chi ti\u1ebft h\u1ec7 th\u1ed1ng<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>15 t\u1ea5m pin m\u1eb7t tr\u1eddi 400W<\/li>\n\n\n\n<li>1 d\u00e3y g\u1ed3m 15 t\u1ea5m (lo\u1ea1t)<\/li>\n\n\n\n<li>H\u1ec7 th\u1ed1ng 1000V DC<\/li>\n\n\n\n<li>I_sc = 10,5 A m\u1ed7i t\u1ea5m pin<\/li>\n\n\n\n<li>Kh\u00f4ng c\u00f3 h\u1ed9p n\u1ed1i d\u00e2y (d\u00e2y n\u1ed1i tr\u1ef1c ti\u1ebfp v\u00e0o b\u1ed9 bi\u1ebfn t\u1ea7n)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u00edch th\u01b0\u1edbc<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ea7u ch\u00ec chu\u1ed7i: 12A ho\u1eb7c 13A gPV, 1000V DC<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec DC c\u1ee7a bi\u1ebfn t\u1ea7n: 15A ho\u1eb7c 20A gPV, 1000V DC<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ecbch b\u1ea3n 2: H\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi tr\u00ean m\u00e1i nh\u00e0 th\u01b0\u01a1ng m\u1ea1i (100kW)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chi ti\u1ebft h\u1ec7 th\u1ed1ng<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>250 t\u1ea5m pin 400W<\/li>\n\n\n\n<li>25 s\u1ee3i d\u00e2y \u00d7 10 t\u1ea5m m\u1ed7i s\u1ee3i<\/li>\n\n\n\n<li>H\u1ec7 th\u1ed1ng 1000V DC<\/li>\n\n\n\n<li>I_sc = 10,5 A m\u1ed7i t\u1ea5m pin<\/li>\n\n\n\n<li>2 h\u1ed9p n\u1ed1i d\u00e2y (m\u1ed7i h\u1ed9p 12-13 d\u00e2y)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u00edch th\u01b0\u1edbc<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ea7u ch\u00ec chu\u1ed7i: 12A gPV, 1000V DC (t\u1ed5ng c\u1ed9ng 25 c\u00e1i)<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec \u0111\u1ea7u ra c\u1ee7a b\u1ed9 gh\u00e9p t\u00edn hi\u1ec7u: 160A gPV, 1000V DC (t\u1ed5ng c\u1ed9ng 2 c\u00e1i)<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec DC c\u1ee7a bi\u1ebfn t\u1ea7n: 200A gPV, 1000V DC<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">K\u1ecbch b\u1ea3n 3: Quy m\u00f4 c\u00f4ng nghi\u1ec7p (5MW, 1500V)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Chi ti\u1ebft h\u1ec7 th\u1ed1ng<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>8334 t\u1ea5m pin n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi hai m\u1eb7t 600W<\/li>\n\n\n\n<li>333 s\u1ee3i d\u00e2y \u00d7 25 t\u1ea5m m\u1ed7i s\u1ee3i<\/li>\n\n\n\n<li>H\u1ec7 th\u1ed1ng 1500V DC<\/li>\n\n\n\n<li>I_sc = 18,2 A m\u1ed7i t\u1ea5m<\/li>\n\n\n\n<li>Nhi\u1ec1u h\u1ed9p k\u1ebft h\u1ee3p v\u00e0 t\u00e1i k\u1ebft h\u1ee3p<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>K\u00edch th\u01b0\u1edbc<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u1ea7u ch\u00ec d\u00e2y: 20A gPV, 1500V DC (t\u1ed5ng c\u1ed9ng 333 c\u00e1i)<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec \u0111\u1ea7u ra c\u1ee7a b\u1ed9 gh\u00e9p (12 chu\u1ed7i): 250A gPV, 1500V DC<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec t\u00e1i k\u1ebft h\u1ee3p: 630A gPV, 1500V DC<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec DC cho bi\u1ebfn t\u1ea7n: Lo\u1ea1i gPV ho\u1eb7c NH 800A+, 1500V DC<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u1ed1i h\u1ee3p c\u1ea7u ch\u00ec<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">T\u1ea1i sao s\u1ef1 ph\u1ed1i h\u1ee3p l\u1ea1i quan tr\u1ecdng<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trong h\u1ec7 th\u1ed1ng PV \u0111a t\u1ea7ng (chu\u1ed7i \u2192 b\u1ed9 gh\u00e9p \u2192 b\u1ed9 t\u00e1i gh\u00e9p \u2192 bi\u1ebfn t\u1ea7n), c\u00e1c c\u1ea7u ch\u00ec ph\u1ea3i \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p \u0111\u00fang c\u00e1ch \u0111\u1ec3 ch\u1ec9 c\u1ea7u ch\u00ec g\u1ea7n v\u1ecb tr\u00ed s\u1ef1 c\u1ed1 nh\u1ea5t m\u1edbi ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>M\u1ee5c ti\u00eau<\/strong>: Ph\u1ed1i h\u1ee3p c\u00f3 ch\u1ecdn l\u1ecdc \u2014 ch\u1ec9 ph\u1ea7n nh\u1ecf nh\u1ea5t c\u1ea7n thi\u1ebft m\u1edbi b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Nguy\u00ean t\u1eafc ph\u1ed1i h\u1ee3p<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>C\u1ea7u ch\u00ec ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n ph\u1ea3i l\u1edbn h\u01a1n.<\/strong> h\u01a1n c\u1ea7u ch\u00ec ph\u00eda h\u1ea1 l\u01b0u<\/li>\n\n\n\n<li><strong>C\u1ea7u ch\u00ec ph\u00eda th\u01b0\u1ee3ng l\u01b0u ph\u1ea3i c\u00f3 d\u00f2ng \u0111i\u1ec7n I\u00b2t cao h\u01a1n.<\/strong> h\u01a1n c\u1ea7u ch\u00ec ph\u00eda h\u1ea1 l\u01b0u<\/li>\n\n\n\n<li><strong>T\u1ef7 l\u1ec7 2:1 ho\u1eb7c cao h\u01a1n<\/strong> th\u01b0\u1eddng \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb \u0111\u1ec3 ph\u1ed1i h\u1ee3p t\u1ed1t.<\/li>\n\n\n\n<li>Lu\u00f4n ki\u1ec3m tra b\u1eb1ng \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">V\u00ed d\u1ee5 v\u1ec1 s\u01a1 \u0111\u1ed3 ph\u1ed1i h\u1ee3p<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>C\u1ea7u ch\u00ec \u0111\u1ea7u v\u00e0o (200A) \u2193 H\u1ed9p n\u1ed1i \u251c\u2500\u2500 C\u1ea7u ch\u00ec d\u00e2y 1 (12A) \u251c\u2500\u2500 C\u1ea7u ch\u00ec d\u00e2y 2 (12A) \u251c\u2500\u2500 C\u1ea7u ch\u00ec d\u00e2y 3 (12A) \u2514\u2500\u2500 ... (T\u1ed5ng c\u1ed9ng 12 d\u00e2y)<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ki\u1ec3m tra ph\u1ed1i h\u1ee3p<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u1ebfu x\u1ea3y ra s\u1ef1 c\u1ed1 \u1edf m\u1ea1ch 1, ch\u1ec9 c\u1ea7u ch\u00ec m\u1ea1ch 12A m\u1edbi b\u1ecb \u0111\u1ee9t.<\/li>\n\n\n\n<li>C\u1ea7u ch\u00ec k\u1ebft h\u1ee3p 200A KH\u00d4NG \u0111\u01b0\u1ee3c ho\u1ea1t \u0111\u1ed9ng.<\/li>\n\n\n\n<li>T\u1ef7 l\u1ec7: 200A \u00f7 12A = 16,7:1 \u2192 s\u1ef1 ph\u1ed1i h\u1ee3p tuy\u1ec7t v\u1eddi<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p khi ch\u1ecdn size v\u00e0 c\u00e1ch tr\u00e1nh ch\u00fang<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m 1: S\u1eed d\u1ee5ng c\u1ea7u ch\u00ec AC trong h\u1ec7 th\u1ed1ng DC.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1<\/strong>C\u1ea7u ch\u00ec AC kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ng\u1eaft d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u. Ch\u00fang c\u00f3 th\u1ec3 kh\u00f4ng kh\u1eafc ph\u1ee5c \u0111\u01b0\u1ee3c s\u1ef1 c\u1ed1 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u, d\u1eabn \u0111\u1ebfn h\u1ecfa ho\u1ea1n ho\u1eb7c h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p<\/strong>Lu\u00f4n s\u1eed d\u1ee5ng <strong>C\u1ea7u ch\u00ec gPV \u0111\u1ecbnh m\u1ee9c DC<\/strong> \u0110\u1ea1t ti\u00eau chu\u1ea9n UL 248-19 ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m 2: B\u1ecf qua \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1<\/strong>C\u1ea7u ch\u00ec trong h\u1ed9p c\u1ea7u dao c\u00f3 th\u1ec3 t\u1ef1 ng\u1eaft n\u1ebfu kh\u00f4ng \u00e1p d\u1ee5ng ch\u1ebf \u0111\u1ed9 gi\u1ea3m c\u00f4ng su\u1ea5t do nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>T\u00ednh to\u00e1n nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng th\u1ef1c t\u1ebf b\u00ean trong bu\u1ed3ng.<\/li>\n\n\n\n<li>\u00c1p d\u1ee5ng \u0111\u01b0\u1eddng cong gi\u1ea3m c\u00f4ng su\u1ea5t theo nhi\u1ec7t \u0111\u1ed9 c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/li>\n\n\n\n<li>Ch\u1ecdn k\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m th\u1ee9 3: Ch\u1ecdn k\u00edch th\u01b0\u1edbc qu\u00e1 l\u1edbn \u201cch\u1ec9 \u0111\u1ec3 cho ch\u1eafc \u0103n\u201d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1<\/strong>Vi\u1ec7c s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec l\u1edbn h\u01a1n m\u1ee9c c\u1ea7n thi\u1ebft s\u1ebd l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7. C\u1ea7u ch\u00ec c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng khi c\u1ea7n thi\u1ebft, d\u1eabn \u0111\u1ebfn h\u01b0 h\u1ecfng b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ho\u1eb7c d\u00e2y d\u1eabn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p<\/strong>Tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t c\u00e1c gi\u1edbi h\u1ea1n c\u1ee7a NEC 690.9. K\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec t\u1ed1i \u0111a l\u00e0 I_sc \u00d7 1,25 \u2014 kh\u00f4ng \u0111\u01b0\u1ee3c v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n n\u00e0y.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m 4: S\u1eed d\u1ee5ng c\u1ea7u ch\u00ec th\u00f4ng th\u01b0\u1eddng thay v\u00ec c\u1ea7u ch\u00ec gPV<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1<\/strong>C\u00e1c lo\u1ea1i c\u1ea7u ch\u00ec \u0111a n\u0103ng c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady \u1edf d\u00f2ng s\u1ef1 c\u1ed1 th\u1ea5p th\u01b0\u1eddng th\u1ea5y trong h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p<\/strong>S\u1eed d\u1ee5ng c\u1ea7u ch\u00ec \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 ch\u1ee9ng nh\u1eadn \u0111\u1eb7c bi\u1ec7t cho c\u00e1c \u1ee9ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi (lo\u1ea1i gPV, UL 248-19).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m 5: Kh\u00f4ng xem x\u00e9t l\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng g\u01b0\u01a1ng m\u1eb7t hai m\u1eb7t<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1<\/strong>C\u00e1c t\u1ea5m pin hai m\u1eb7t c\u00f3 th\u1ec3 t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n cao h\u01a1n m\u1ee9c \u0111\u1ecbnh m\u1ee9c STC do h\u1ec7 s\u1ed1 ph\u1ea3n x\u1ea1 (\u00e1nh s\u00e1ng ph\u1ea3n chi\u1ebfu t\u1eeb m\u1eb7t \u0111\u1ea5t).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u00eam 5-15% l\u1ee3i nhu\u1eadn cho h\u1ec7 th\u1ed1ng hai m\u1eb7t.<\/li>\n\n\n\n<li>Ki\u1ec3m tra th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 \u0111\u1ed9 khu\u1ebfch \u0111\u1ea1i hai m\u1eb7t c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/li>\n\n\n\n<li>H\u00e3y xem x\u00e9t d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a d\u1ef1 ki\u1ebfn, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u00f2ng \u0111i\u1ec7n I_sc theo ti\u00eau chu\u1ea9n STC.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Sai l\u1ea7m 6: Qu\u00ean m\u1ea5t c\u00e1c y\u1ebfu t\u1ed1 b\u1ee9c x\u1ea1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u1ea5n \u0111\u1ec1<\/strong>\u1ede c\u01b0\u1eddng \u0111\u1ed9 b\u1ee9c x\u1ea1 r\u1ea5t cao (v\u00ed d\u1ee5: 1200 W\/m\u00b2), d\u00f2ng \u0111i\u1ec7n c\u1ee7a t\u1ea5m pin c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb ti\u00eau chu\u1ea9n c\u1ee7a STC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Gi\u1ea3i ph\u00e1p<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>H\u00e3y xem x\u00e9t c\u01b0\u1eddng \u0111\u1ed9 b\u1ee9c x\u1ea1 t\u1ed1i \u0111a d\u1ef1 ki\u1ebfn t\u1ea1i \u0111\u1ecba \u0111i\u1ec3m \u0111\u00f3.<\/li>\n\n\n\n<li>\u00c1p d\u1ee5ng m\u1ee9c l\u1ec1 th\u00edch h\u1ee3p (th\u01b0\u1eddng l\u00e0 10-25% tr\u00ean I_sc)<\/li>\n\n\n\n<li>H\u1ec7 s\u1ed1 1,25 c\u1ee7a NEC 690.9 \u0111\u00e3 t\u00ednh \u0111\u1ebfn m\u1ed9t ph\u1ea7n \u0111i\u1ec1u n\u00e0y, nh\u01b0ng trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t h\u01a1n c\u00f3 th\u1ec3 c\u1ea7n h\u1ec7 s\u1ed1 l\u1edbn h\u01a1n.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Danh s\u00e1ch ki\u1ec3m tra l\u1ef1a ch\u1ecdn c\u1ea7u ch\u00ec PV<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y s\u1eed d\u1ee5ng danh s\u00e1ch ki\u1ec3m tra n\u00e0y khi ch\u1ecdn c\u1ea7u ch\u00ec PV:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c \u2265 \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a c\u1ee7a h\u1ec7 th\u1ed1ng<\/li>\n\n\n\n<li>\u0110\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n hi\u1ec7n t\u1ea1i n\u1eb1m trong gi\u1edbi h\u1ea1n c\u1ee7a NEC 690.9 (I_sc \u00d7 1,25 t\u1ed1i \u0111a)<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng ng\u1eaft m\u1ea1ch \u2265 d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 kh\u1ea3 d\u1ee5ng<\/li>\n\n\n\n<li>\u0110\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 theo chu\u1ea9n DC (kh\u00f4ng ph\u1ea3i AC)<\/li>\n\n\n\n<li>L\u1edbp gPV ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Y\u00eau c\u1ea7u v\u1ec1 m\u00f4i tr\u01b0\u1eddng<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng l\u1eafp \u0111\u1eb7t<\/li>\n\n\n\n<li>\u00c1p d\u1ee5ng gi\u1ea3m c\u00f4ng su\u1ea5t theo nhi\u1ec7t \u0111\u1ed9.<\/li>\n\n\n\n<li>Ch\u1ed1ng tia c\u1ef1c t\u00edm (n\u1ebfu ti\u1ebfp x\u00fac v\u1edbi \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi)<\/li>\n\n\n\n<li>Th\u00edch h\u1ee3p s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi (n\u1ebfu c\u00f3)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Y\u00eau c\u1ea7u c\u01a1 kh\u00ed<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>K\u00edch th\u01b0\u1edbc kh\u1ed5 gi\u1ea5y ch\u00ednh x\u00e1c (10\u00d738, 14\u00d751, v.v.)<\/li>\n\n\n\n<li>T\u01b0\u01a1ng th\u00edch v\u1edbi h\u1ed9p c\u1ea7u ch\u00ec<\/li>\n\n\n\n<li>K\u00edch th\u01b0\u1edbc v\u1eeba v\u1eb7n v\u1edbi h\u1ed9p \u0111\u1ef1ng<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng ch\u1ed1ng rung (n\u1ebfu c\u00f3)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ch\u1ee9ng nh\u1eadn v\u00e0 tu\u00e2n th\u1ee7<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1ea1t ch\u1ee9ng nh\u1eadn UL 248-19 (ho\u1eb7c t\u01b0\u01a1ng \u0111\u01b0\u01a1ng)<\/li>\n\n\n\n<li>Tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n NEC<\/li>\n\n\n\n<li>\u0110\u01b0\u1ee3c li\u1ec7t k\u00ea cho c\u00e1c \u1ee9ng d\u1ee5ng PV<\/li>\n\n\n\n<li>\u0110\u00e1nh d\u1ea5u v\u00e0 ghi ch\u00e9p ph\u00f9 h\u1ee3p<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n xem x\u00e9t \u1edf c\u1ea5p \u0111\u1ed9 h\u1ec7 th\u1ed1ng<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb th\u01b0\u1ee3ng ngu\u1ed3n\/h\u1ea1 ngu\u1ed3n<\/li>\n\n\n\n<li>Kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn \u0111\u1ec3 thay th\u1ebf<\/li>\n\n\n\n<li>C\u00f3 s\u1eb5n c\u1ea7u ch\u00ec d\u1ef1 ph\u00f2ng<\/li>\n\n\n\n<li>Hi\u1ec7u qu\u1ea3 chi ph\u00ed<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1: T\u1ea1i sao t\u00f4i kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec th\u00f4ng th\u01b0\u1eddng trong h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi c\u1ee7a m\u00ecnh?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>C\u00e1c lo\u1ea1i c\u1ea7u ch\u00ec th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho h\u1ec7 th\u1ed1ng \u0111i\u1ec7n xoay chi\u1ec1u v\u00e0 c\u00f3 th\u1ec3 kh\u00f4ng ng\u1eaft \u0111\u01b0\u1ee3c h\u1ed3 quang \u0111i\u1ec7n m\u1ed9t chi\u1ec1u m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf d\u00f2ng s\u1ef1 c\u1ed1 th\u1ea5p th\u01b0\u1eddng th\u1ea5y trong h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n. <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">c\u1ea7u ch\u00ec chuy\u00ean d\u1ee5ng cho PV<\/a> (Lo\u1ea1i gPV, UL 248-19) \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho vi\u1ec7c ng\u1eaft m\u1ea1ch DC v\u00e0 ho\u1ea1t \u0111\u1ed9ng v\u1edbi d\u00f2ng s\u1ef1 c\u1ed1 th\u1ea5p.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2: C\u1ea7u ch\u00ec gPV v\u00e0 c\u1ea7u ch\u00ec aR kh\u00e1c nhau \u1edf \u0111i\u1ec3m n\u00e0o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">c\u1ea7u ch\u00ec gPV<\/a><\/strong> (UL 248-19): B\u1ea3o v\u1ec7 to\u00e0n di\u1ec7n (c\u1ea3 qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch), \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t cho h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n. D\u00f9ng \u0111\u1ec3 b\u1ea3o v\u1ec7 chu\u1ed7i v\u00e0 m\u1ea3ng pin m\u1eb7t tr\u1eddi.<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/essfuse.com\/vi\/cac-cach-dien-dat-thong-dung-cho-cau-chi\/\">c\u1ea7u ch\u00ec AR<\/a><\/strong> (UL 248-13): Ch\u1ec9 b\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o v\u1ec7 ch\u1ea5t b\u00e1n d\u1eabn. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong bi\u1ebfn t\u1ea7n v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f4ng su\u1ea5t.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 b\u1ea3o v\u1ec7 h\u1ec7 th\u1ed1ng PV \u1edf c\u1ea5p \u0111\u1ed9 chu\u1ed7i, b\u1ea1n c\u1ea7n <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">c\u1ea7u ch\u00ec gPV<\/a>, kh\u00f4ng <a href=\"https:\/\/essfuse.com\/vi\/difference-between-gg-gr-am-ar-gpv-gbat-fuses\/\">c\u1ea7u ch\u00ec AR<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3: L\u00e0m sao t\u00f4i bi\u1ebft c\u1ea7u ch\u00ec c\u1ee7a m\u00ecnh c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) hay kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>Ki\u1ec3m tra k\u00fd hi\u1ec7u tr\u00ean c\u1ea7u ch\u00ec ho\u1eb7c b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt. C\u1ea7u ch\u00ec \u0111\u1ecbnh m\u1ee9c DC s\u1ebd ghi r\u00f5 \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c DC c\u1ee7a ch\u00fang. N\u1ebfu ch\u1ec9 ghi \u0111i\u1ec7n \u00e1p AC, c\u1ea7u ch\u00ec \u0111\u00f3 KH\u00d4NG ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng DC. H\u00e3y t\u00ecm c\u00e1c k\u00fd hi\u1ec7u \u201cDC\u201d ho\u1eb7c \u201cgPV\u201d.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4: T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec 1000V trong h\u1ec7 th\u1ed1ng 1500V kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>Kh\u00f4ng. Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec c\u00f3 \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c th\u1ea5p h\u01a1n \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng. C\u1ea7u ch\u00ec c\u00f3 \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c kh\u00f4ng \u0111\u1ee7 c\u00f3 th\u1ec3 kh\u00f4ng ng\u1eaft \u0111\u01b0\u1ee3c s\u1ef1 c\u1ed1 m\u1ed9t c\u00e1ch an to\u00e0n, d\u1eabn \u0111\u1ebfn nguy c\u01a1 ch\u00e1y n\u1ed5 ho\u1eb7c h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb. Lu\u00f4n lu\u00f4n s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec c\u00f3 \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c b\u1eb1ng ho\u1eb7c cao h\u01a1n \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5: \u0110i\u1ec1u g\u00ec s\u1ebd x\u1ea3y ra n\u1ebfu t\u00f4i s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec qu\u00e1 l\u1edbn?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>C\u1ea7u ch\u00ec qu\u00e1 c\u1ee1 c\u00f3 th\u1ec3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng trong \u0111i\u1ec1u ki\u1ec7n s\u1ef1 c\u1ed1, cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n qu\u00e1 m\u1ee9c ch\u1ea1y qua h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u00e1c t\u1ea5m pin m\u1eb7t tr\u1eddi, l\u00e0m qu\u00e1 nhi\u1ec7t d\u00e2y d\u1eabn v\u00e0 g\u00e2y nguy c\u01a1 ch\u00e1y n\u1ed5. Lu\u00f4n tu\u00e2n theo h\u01b0\u1edbng d\u1eabn v\u1ec1 k\u00edch th\u01b0\u1edbc t\u1ed1i \u0111a c\u1ee7a NEC 690.9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6: \u0110i\u1ec1u g\u00ec s\u1ebd x\u1ea3y ra n\u1ebfu t\u00f4i s\u1eed d\u1ee5ng c\u1ea7u ch\u00ec qu\u00e1 nh\u1ecf?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>C\u1ea7u ch\u00ec c\u00f3 c\u00f4ng su\u1ea5t nh\u1ecf h\u01a1n m\u1ee9c c\u1ea7n thi\u1ebft c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ng\u1eaft m\u1ea1ch kh\u00f4ng c\u1ea7n thi\u1ebft trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh b\u00ecnh th\u01b0\u1eddng, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u00e0o nh\u1eefng ng\u00e0y n\u00f3ng ho\u1eb7c trong \u0111i\u1ec1u ki\u1ec7n b\u1ee9c x\u1ea1 cao. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 s\u1ea3n l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7: T\u00f4i c\u00f3 c\u1ea7n c\u1ea7u ch\u00ec \u1edf c\u1ea3 c\u1ef1c d\u01b0\u01a1ng v\u00e0 c\u1ef1c \u00e2m kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>\u0110i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5u h\u00ecnh h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c y\u00eau c\u1ea7u c\u1ee7a quy \u0111\u1ecbnh \u0111\u1ecba ph\u01b0\u01a1ng. Trong nhi\u1ec1u h\u1ec7 th\u1ed1ng, ch\u1ec9 c\u1ea7n l\u1eafp c\u1ea7u ch\u00ec \u1edf c\u1ef1c d\u01b0\u01a1ng l\u00e0 \u0111\u1ee7. Tuy nhi\u00ean, m\u1ed9t s\u1ed1 h\u1ec7 th\u1ed1ng (\u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng h\u1ec7 th\u1ed1ng c\u00f3 y\u00eau c\u1ea7u ph\u00e1t hi\u1ec7n l\u1ed7i n\u1ed1i \u0111\u1ea5t) c\u00f3 th\u1ec3 c\u1ea7n l\u1eafp c\u1ea7u ch\u00ec \u1edf c\u1ea3 hai c\u1ef1c. H\u00e3y tham kh\u1ea3o NEC 690 v\u00e0 c\u00e1c quy \u0111\u1ecbnh \u0111\u1ecba ph\u01b0\u01a1ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e2u 8: N\u00ean thay c\u1ea7u ch\u00ec PV bao l\u00e2u m\u1ed9t l\u1ea7n?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>Trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng, <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">c\u1ea7u ch\u00ec PV<\/a> Ch\u00fang c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c t\u1eeb 10 \u0111\u1ebfn 20 n\u0103m ho\u1eb7c h\u01a1n. N\u00ean thay th\u1ebf ch\u00fang n\u1ebfu:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ch\u00fang \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng (b\u1ecb n\u1ed5) do l\u1ed7i<\/li>\n\n\n\n<li>Ch\u00fang c\u00f3 d\u1ea5u hi\u1ec7u h\u01b0 h\u1ecfng, \u0111\u1ed5i m\u00e0u ho\u1eb7c \u0103n m\u00f2n.<\/li>\n\n\n\n<li>Ch\u00fang \u0111\u00e3 v\u01b0\u1ee3t qu\u00e1 tu\u1ed5i th\u1ecd d\u1ef1 ki\u1ebfn (n\u1ebfu c\u00f3 ghi r\u00f5).<\/li>\n\n\n\n<li>Sau m\u1ed9t s\u1ef1 c\u1ed1 s\u00e9t \u0111\u00e1nh ho\u1eb7c xung \u0111i\u1ec7n l\u1edbn<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">9: T\u00f4i c\u00f3 th\u1ec3 t\u1ea1m th\u1eddi thay th\u1ebf c\u1ea7u ch\u00ec PV b\u1ecb ch\u00e1y b\u1eb1ng c\u1ea7u ch\u00ec th\u00f4ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>Kh\u00f4ng. Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c thay th\u1ebf c\u1ea7u ch\u00ec PV b\u1eb1ng c\u1ea7u ch\u00ec kh\u00f4ng \u0111\u1ea1t ti\u00eau chu\u1ea9n PV, k\u1ec3 c\u1ea3 t\u1ea1m th\u1eddi. S\u1eed d\u1ee5ng sai lo\u1ea1i c\u1ea7u ch\u00ec c\u00f3 th\u1ec3 g\u00e2y nguy hi\u1ec3m v\u00e0 vi ph\u1ea1m quy \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n. Lu\u00f4n lu\u00f4n s\u1eed d\u1ee5ng \u0111\u00fang lo\u1ea1i v\u00e0 \u0111\u00fang \u0111\u1ecbnh m\u1ee9c c\u1ea7u ch\u00ec.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">10: C\u1ea7u ch\u00ec v\u00e0 c\u1ea7u dao t\u1ef1 \u0111\u1ed9ng trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi kh\u00e1c nhau \u1edf \u0111i\u1ec3m n\u00e0o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>A<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>C\u1ea7u ch\u00ec<\/strong>: S\u1eed d\u1ee5ng m\u1ed9t l\u1ea7n, ho\u1ea1t \u0111\u1ed9ng nhanh h\u01a1n, kh\u1ea3 n\u0103ng d\u1eadp t\u1eaft h\u1ed3 quang DC t\u1ed1t h\u01a1n, chi ph\u00ed th\u1ea5p h\u01a1n, nh\u01b0ng c\u1ea7n thay th\u1ebf sau khi s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li><strong>c\u1ea7u dao<\/strong>: C\u00f3 th\u1ec3 \u0111\u1eb7t l\u1ea1i, ti\u1ec7n l\u1ee3i h\u01a1n, nh\u01b0ng nh\u00ecn chung ch\u1eadm h\u01a1n v\u00e0 c\u00f3 th\u1ec3 kh\u00f4ng kh\u1eafc ph\u1ee5c l\u1ed7i DC hi\u1ec7u qu\u1ea3.<\/li>\n\n\n\n<li><strong>S\u1ef1 gi\u1edbi thi\u1ec7u<\/strong>S\u1eed d\u1ee5ng c\u1ea7u ch\u00ec \u0111\u1ec3 b\u1ea3o v\u1ec7 \u1edf c\u1ea5p \u0111\u1ed9 chu\u1ed7i v\u00e0 c\u1ea5p \u0111\u1ed9 m\u1ea3ng khi t\u1ed1c \u0111\u1ed9 v\u00e0 kh\u1ea3 n\u0103ng ng\u1eaft m\u1ea1ch DC l\u00e0 r\u1ea5t quan tr\u1ecdng. S\u1eed d\u1ee5ng c\u1ea7u dao \u0111\u1ec3 ng\u1eaft m\u1ea1ch v\u00e0 b\u1ea3o v\u1ec7 m\u1ea1ch n\u00f3i chung khi kh\u1ea3 n\u0103ng thi\u1ebft l\u1eadp l\u1ea1i l\u00e0 quan tr\u1ecdng.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Th\u00edch h\u1ee3p<a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\"> C\u1ea7u ch\u00ec PV<\/a> Vi\u1ec7c t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng an to\u00e0n v\u00e0 \u0111\u00e1ng tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n m\u1eb7t tr\u1eddi. B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c h\u01b0\u1edbng d\u1eabn trong b\u00e0i vi\u1ebft n\u00e0y \u2014 bao g\u1ed3m c\u00e1c y\u00eau c\u1ea7u c\u1ee7a NEC, gi\u1ea3m c\u00f4ng su\u1ea5t do nhi\u1ec7t \u0111\u1ed9 v\u00e0 s\u1ef1 ph\u1ed1i h\u1ee3p th\u00edch h\u1ee3p \u2014 b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>S\u1eed d\u1ee5ng <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">c\u1ea7u ch\u00ec lo\u1ea1i gPV<\/a> \u0110\u1ea1t ti\u00eau chu\u1ea9n UL 248-19<\/li>\n\n\n\n<li>K\u00edch th\u01b0\u1edbc c\u1ea7u ch\u00ec t\u1ed1i \u0111a = <strong>I_sc \u00d7 1,25<\/strong> (NEC 690.9)<\/li>\n\n\n\n<li>Lu\u00f4n lu\u00f4n \u00e1p d\u1ee5ng <strong>gi\u1ea3m nhi\u1ec7t \u0111\u1ed9<\/strong> D\u00e0nh cho l\u1eafp \u0111\u1eb7t ngo\u00e0i tr\u1eddi<\/li>\n\n\n\n<li>\u0110\u1ea3m b\u1ea3o \u0111\u00fang c\u00e1ch <strong>ph\u1ed1i h\u1ee3p<\/strong> gi\u1eefa c\u00e1c m\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7<\/li>\n\n\n\n<li>X\u00e1c minh <strong>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c DC<\/strong> ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng<\/li>\n\n\n\n<li>Coi nh\u01b0 <strong>l\u1ee3i \u00edch hai m\u1eb7t<\/strong> v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 \u0111\u1eb7c th\u00f9 kh\u00e1c c\u1ee7a \u0111\u1ecba \u0111i\u1ec3m<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV EssFuse<\/a><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">EssFuse cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 c\u00e1c lo\u1ea1i c\u1ea7u ch\u00ec quang \u0111i\u1ec7n gPV \u0111\u1ea1t ch\u1ee9ng nh\u1eadn UL 248-19 d\u00e0nh cho h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c<\/strong>\u0110i\u1ec7n \u00e1p: 1000V DC v\u00e0 1500V DC<\/li>\n\n\n\n<li><strong>X\u1ebfp h\u1ea1ng hi\u1ec7n t\u1ea1i<\/strong>: 2A \u0111\u1ebfn 63A (m\u1ee9c d\u00e2y), l\u00ean \u0111\u1ebfn 630A+ (m\u1ee9c m\u1ea3ng)<\/li>\n\n\n\n<li><strong>C\u00e1c y\u1ebfu t\u1ed1 h\u00ecnh th\u1ee9c<\/strong>: 10x38mm, 14x51mm, 22x58mm, lo\u1ea1i NH<\/li>\n\n\n\n<li><strong>V\u01b0\u1ee3t qu\u00e1 kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u1ef1ng<\/strong>D\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u (DC) l\u00ean \u0111\u1ebfn 50kA.<\/li>\n\n\n\n<li><strong>Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9<\/strong>: -40\u00b0C \u0111\u1ebfn +85\u00b0C<\/li>\n\n\n\n<li><strong>Ch\u1ee9ng ch\u1ec9<\/strong>: UL 248-19, IEC 60269-6, CE, RoHS<\/li>\n\n\n\n<li><strong>Kh\u1ea3 n\u0103ng chu k\u1ef3 cao<\/strong> cho tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng l\u00e2u d\u00e0i<\/li>\n\n\n\n<li><strong>M\u1ee9c ti\u00eau hao \u0111i\u1ec7n n\u0103ng th\u1ea5p<\/strong> \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 h\u1ec7 th\u1ed1ng<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Cho d\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf m\u1ed9t h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi nh\u1ecf cho nh\u00e0 \u1edf hay m\u1ed9t trang tr\u1ea1i n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi quy m\u00f4 l\u1edbn, <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">EssFuse<\/a> c\u00f3 quy\u1ec1n <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV<\/a> cho \u0111\u01a1n \u0111\u0103ng k\u00fd c\u1ee7a b\u1ea1n. <strong>Li\u00ean h\u1ec7 v\u1edbi \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i<\/strong> \u0110\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n v\u1ec1 k\u00edch c\u1ee1 ph\u00f9 h\u1ee3p v\u00e0 \u0111\u1ec1 xu\u1ea5t s\u1ea3n ph\u1ea9m c\u00e1 nh\u00e2n h\u00f3a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"> <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">C\u1ea7u ch\u00ec PV<\/a>  <a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">https:\/\/essfuse.com\/product-category\/photovoltaic-fuse<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">c\u1ea7u ch\u00ec gPV<\/a><\/strong><a href=\"https:\/\/essfuse.com\/vi\/danh-muc-san-pham\/cau-chi-quang-dien\/\">  https:\/\/essfuse.com\/product-category\/photovoltaic-fuse\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><a href=\"https:\/\/essfuse.com\/vi\/san-pham\/h22f07-ar-semiconductor-fuse-25a-100a-690v-700v\/\">c\u1ea7u ch\u00ec AR<\/a><\/strong> <a href=\"https:\/\/essfuse.com\/vi\/san-pham\/h22f07-ar-semiconductor-fuse-25a-100a-690v-700v\/\">https:\/\/essfuse.com\/product\/h22f07-ar-semiconductor-fuse-25a-100a-690v-700v\/<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>PV Fuse Sizing Guide: How to Choose the Right Fuse for Solar Array Introductio Selecting the correct fuse size for<\/p>","protected":false},"author":16,"featured_media":15370,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[158],"tags":[],"class_list":["post-14164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-essfuse-news-fuse-industry-insights"],"_links":{"self":[{"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/posts\/14164","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/comments?post=14164"}],"version-history":[{"count":4,"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/posts\/14164\/revisions"}],"predecessor-version":[{"id":14192,"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/posts\/14164\/revisions\/14192"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/media\/15370"}],"wp:attachment":[{"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/media?parent=14164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/categories?post=14164"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/essfuse.com\/vi\/wp-json\/wp\/v2\/tags?post=14164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}