{"id":20890,"date":"2025-12-17T00:08:58","date_gmt":"2025-12-16T16:08:58","guid":{"rendered":"https:\/\/viox.com\/?p=20890"},"modified":"2025-12-17T00:09:00","modified_gmt":"2025-12-16T16:09:00","slug":"rapid-shutdown-vs-dc-disconnect-safety-guide","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/rapid-shutdown-vs-dc-disconnect-safety-guide\/","title":{"rendered":"Ng\u1eaft nhanh (Rapid Shutdown) so v\u1edbi Ng\u1eaft m\u1ea1ch DC (DC Disconnect): S\u1ef1 kh\u00e1c bi\u1ec7t quan tr\u1ecdng v\u1ec1 an to\u00e0n trong h\u1ec7 th\u1ed1ng PV"},"content":{"rendered":"<div class=\"product-intro\">\n<h2>Hi\u1ec3u R\u00f5 S\u1ef1 Kh\u00e1c Bi\u1ec7t Quan Tr\u1ecdng: An To\u00e0n T\u00ednh M\u1ea1ng so v\u1edbi An To\u00e0n B\u1ea3o Tr\u00ec<\/h2>\n<p>Trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n (PV), m\u1ed9t v\u00e0i ch\u1ee7 \u0111\u1ec1 g\u00e2y ra nhi\u1ec1u nh\u1ea7m l\u1eabn nh\u01b0 m\u1ed1i quan h\u1ec7 gi\u1eefa h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh v\u00e0 c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC. Ngay c\u1ea3 c\u00e1c nh\u00e0 th\u1ea7u \u0111i\u1ec7n c\u00f3 kinh nghi\u1ec7m th\u01b0\u1eddng h\u1ecfi: \u201cN\u1ebfu t\u00f4i \u0111\u00e3 l\u1eafp \u0111\u1eb7t c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC b\u00ean c\u1ea1nh bi\u1ebfn t\u1ea7n, t\u00f4i c\u00f3 c\u1ea7n h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh kh\u00f4ng? Ch\u00fang kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t sao?\u201d<\/p>\n<p>C\u00e2u tr\u1ea3 l\u1eddi l\u00e0 d\u1ee9t kho\u00e1t: <strong>Kh\u00f4ng, ch\u00fang kh\u00f4ng gi\u1ed1ng nhau\u2014v\u00e0 hi\u1ec3u \u0111\u01b0\u1ee3c s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y c\u00f3 th\u1ec3 c\u1ee9u s\u1ed1ng ng\u01b0\u1eddi.<\/strong><\/p>\n<p>S\u1ef1 hi\u1ec3u l\u1ea7m n\u00e0y b\u1eaft ngu\u1ed3n t\u1eeb s\u1ef1 hi\u1ec3u sai c\u01a1 b\u1ea3n v\u1ec1 c\u00e1c quy t\u1eafc \u0111i\u1ec7n v\u00e0 m\u1ee5c ti\u00eau an to\u00e0n. Nh\u01b0 c\u00e1c cu\u1ed9c th\u1ea3o lu\u1eadn tr\u00ean c\u00e1c di\u1ec5n \u0111\u00e0n chuy\u00ean nghi\u1ec7p nh\u01b0 Mike Holt \u0111\u00e3 ti\u1ebft l\u1ed9, s\u1ef1 kh\u00e1c bi\u1ec7t l\u00e0 r\u00f5 r\u00e0ng v\u00e0 quan tr\u1ecdng: <strong>M\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 c\u1ee9u s\u1ed1ng l\u00ednh c\u1ee9u h\u1ecfa trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p kh\u1ea9n c\u1ea5p, trong khi h\u1ec7 th\u1ed1ng kia t\u1ed3n t\u1ea1i \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u1ee3 \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh b\u1ea3o tr\u00ec.<\/strong><\/p>\n<p>S\u1ef1 nguy hi\u1ec3m l\u00e0 c\u00f3 th\u1eadt v\u00e0 ngay l\u1eadp t\u1ee9c: Khi b\u1ea1n m\u1edf m\u1ed9t <a href=\"https:\/\/test.viox.com\/vi\/dc-isolator-switch\/\">C\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC<\/a>, b\u1ea1n ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 d\u1eebng d\u00f2ng \u0111i\u1ec7n \u0111\u1ebfn bi\u1ebfn t\u1ea7n. Tuy nhi\u00ean, c\u00e1c d\u00e2y d\u1eabn ch\u1ea1y t\u1eeb m\u1ea3ng tr\u00ean m\u00e1i nh\u00e0 c\u1ee7a b\u1ea1n \u0111\u1ebfn thi\u1ebft b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i \u0111\u00f3 v\u1eabn \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n \u1edf m\u1ee9c 600V-1000V DC\u2014m\u1ed9t \u0111i\u1ec7n \u00e1p g\u00e2y ch\u1ebft ng\u01b0\u1eddi v\u1eabn t\u1ed3n t\u1ea1i mi\u1ec5n l\u00e0 \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi chi\u1ebfu v\u00e0o c\u00e1c t\u1ea5m pin. \u0110\u00e2y ch\u00ednh x\u00e1c l\u00e0 l\u00fd do t\u1ea1i sao B\u1ed9 lu\u1eadt \u0110i\u1ec7n Qu\u1ed1c gia (NEC) quy \u0111\u1ecbnh h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh nh\u01b0 m\u1ed9t l\u1edbp an to\u00e0n ri\u00eang bi\u1ec7t, b\u1eaft bu\u1ed9c.<\/p>\n<h2>Nhi\u1ec7m V\u1ee5 C\u1ed1t L\u00f5i: Ai B\u1ea3o V\u1ec7 Ai?<\/h2>\n<p>Hi\u1ec3u m\u1ee5c \u0111\u00edch c\u01a1 b\u1ea3n c\u1ee7a m\u1ed7i thi\u1ebft b\u1ecb l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng ph\u00f9 h\u1ee3p v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd;\" src=\"https:\/\/img.viox.com\/viox-dc-disconnect-switch-mounted-outdoors-near-solar-inverter-in-commercial-pv-installation.webp\" alt=\"VIOX DC disconnect switch mounted outdoors near solar inverter in commercial PV installation\" \/><figcaption style=\"color: #666; font-size: 0.9em; margin-top: 5px;\">H\u00ecnh 1: C\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC VIOX m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t g\u1ea7n bi\u1ebfn t\u1ea7n \u0111\u1ea3m b\u1ea3o c\u00e1ch ly v\u1eadt l\u00fd an to\u00e0n cho nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec.<\/figcaption><\/figure>\n<h3>C\u00f4ng T\u1eafc Ng\u1eaft K\u1ebft N\u1ed1i DC: C\u00f4ng C\u1ee5 C\u1ee7a Th\u1ee3 \u0110i\u1ec7n<\/h3>\n<ul>\n<li><strong>Nh\u00e2n Vi\u00ean \u0110\u01b0\u1ee3c B\u1ea3o V\u1ec7:<\/strong> K\u1ef9 thu\u1eadt vi\u00ean b\u1ea3o tr\u00ec v\u00e0 nh\u00e0 th\u1ea7u \u0111i\u1ec7n<\/li>\n<li><strong>Ch\u1ee9c n\u0103ng ch\u00ednh:<\/strong> C\u00e1ch ly v\u1eadt l\u00fd bi\u1ebfn t\u1ea7n kh\u1ecfi m\u1ea3ng PV \u0111\u1ec3 b\u1ea3o tr\u00ec an to\u00e0n v\u00e0 thay th\u1ebf thi\u1ebft b\u1ecb<\/li>\n<li><strong>Nguy\u00ean T\u1eafc Ho\u1ea1t \u0110\u1ed9ng:<\/strong> Ng\u1eaft k\u1ebft n\u1ed1i DC cung c\u1ea5p m\u1ed9t khe h\u1edf kh\u00f4ng kh\u00ed c\u01a1 h\u1ecdc, c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y, c\u00e1ch ly v\u1eadt l\u00fd c\u00e1c d\u00e2y d\u1eabn, \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua ph\u1ea7n b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i.<\/li>\n<li><strong>H\u1ea1n Ch\u1ebf Quan Tr\u1ecdng:<\/strong> M\u1eb7c d\u00f9 ng\u1eaft k\u1ebft n\u1ed1i lo\u1ea1i b\u1ecf d\u00f2ng \u0111i\u1ec7n, nh\u01b0ng n\u00f3 kh\u00f4ng <strong>kh\u00f4ng<\/strong> ng\u1eaft \u0111i\u1ec7n c\u00e1c d\u00e2y d\u1eabn gi\u1eefa m\u1ea3ng tr\u00ean m\u00e1i nh\u00e0 v\u00e0 c\u00e1c \u0111\u1ea7u n\u1ed1i ph\u00eda \u0111\u01b0\u1eddng d\u00e2y c\u1ee7a thi\u1ebft b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i. C\u00e1c c\u00e1p n\u00e0y v\u1eabn \u1edf \u0111i\u1ec7n \u00e1p DC nguy hi\u1ec3m\u2014th\u01b0\u1eddng l\u00e0 600-1000V\u2014b\u1ea5t c\u1ee9 khi n\u00e0o m\u1eb7t tr\u1eddi chi\u1ebfu s\u00e1ng.<\/li>\n<\/ul>\n<h3>H\u1ec7 Th\u1ed1ng T\u1eaft M\u00e1y Nhanh: \u0110\u01b0\u1eddng D\u00e2y C\u1ee9u Sinh C\u1ee7a Ng\u01b0\u1eddi \u1ee8ng C\u1ee9u \u0110\u1ea7u Ti\u00ean<\/h3>\n<ul>\n<li><strong>Nh\u00e2n Vi\u00ean \u0110\u01b0\u1ee3c B\u1ea3o V\u1ec7:<\/strong> L\u00ednh c\u1ee9u h\u1ecfa v\u00e0 \u0111\u1ed9i \u1ee9ng c\u1ee9u kh\u1ea9n c\u1ea5p<\/li>\n<li><strong>Ch\u1ee9c n\u0103ng ch\u00ednh:<\/strong> Ng\u1eaft \u0111i\u1ec7n to\u00e0n h\u1ec7 th\u1ed1ng \u0111\u1ec3 gi\u1ea3m \u0111i\u1ec7n \u00e1p xu\u1ed1ng m\u1ee9c an to\u00e0n trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng PV<\/li>\n<li><strong>Nguy\u00ean T\u1eafc Ho\u1ea1t \u0110\u1ed9ng:<\/strong> Theo quy \u0111\u1ecbnh c\u1ee7a \u0110i\u1ec1u 690.12 c\u1ee7a NEC, h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh ph\u1ea3i gi\u1ea3m \u0111i\u1ec7n \u00e1p d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong ranh gi\u1edbi m\u1ea3ng xu\u1ed1ng 30V tr\u1edf xu\u1ed1ng v\u00e0 d\u00e2y d\u1eabn c\u00e1ch m\u1ea3ng h\u01a1n 1 foot xu\u1ed1ng 80V tr\u1edf xu\u1ed1ng, trong v\u00f2ng 30 gi\u00e2y sau khi kh\u1edfi \u0111\u1ed9ng.<\/li>\n<li><strong>\u01afu \u0110i\u1ec3m Ch\u00ednh:<\/strong> Gi\u1ea3m \u0111i\u1ec7n \u00e1p x\u1ea3y ra t\u1ea1i ngu\u1ed3n\u2014t\u1ea1i ho\u1eb7c g\u1ea7n m\u1ed7i t\u1ea5m pin m\u1eb7t tr\u1eddi\u2014lo\u1ea1i b\u1ecf nguy c\u01a1 trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng, bao g\u1ed3m c\u1ea3 d\u00e2y d\u1eabn trong t\u01b0\u1eddng, \u1ed1ng d\u1eabn v\u00e0 m\u00e1i nh\u00e0.<\/li>\n<\/ul>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd;\" src=\"https:\/\/img.viox.com\/technical-schematic-diagram-showing-rapid-shutdown-system-components-including-viox-dc-disconnect-as-rsd-initiator-transmitter-and-module-level-shutoff-devices.webp\" alt=\"Technical schematic diagram showing rapid shutdown system components including VIOX DC disconnect as RSD initiator, transmitter, and module-level shutoff devices\" \/><figcaption style=\"color: #666; font-size: 0.9em; margin-top: 5px;\">H\u00ecnh 2: S\u01a1 \u0111\u1ed3 cho th\u1ea5y c\u00e1ch c\u00e1c thi\u1ebft b\u1ecb t\u1eaft \u1edf c\u1ea5p \u0111\u1ed9 m\u00f4-\u0111un ho\u1ea1t \u0111\u1ed9ng song song v\u1edbi b\u1ed9 ph\u00e1t v\u00e0 ng\u1eaft k\u1ebft n\u1ed1i DC \u0111\u1ec3 ng\u1eaft \u0111i\u1ec7n to\u00e0n b\u1ed9 m\u1ea3ng.<\/figcaption><\/figure>\n<h2>Tri\u1ec3n Khai K\u1ef9 Thu\u1eadt: \u0110i\u1ec1u Khi\u1ec3n V\u1eadt L\u00fd so v\u1edbi \u0110i\u1ec7n T\u1eed<\/h2>\n<h3>Ng\u1eaft K\u1ebft N\u1ed1i DC: \u0110\u01a1n Gi\u1ea3n V\u1ec1 C\u01a1 H\u1ecdc<\/h3>\n<p>C\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 chuy\u1ec3n m\u1ea1ch c\u01a1 h\u1ecdc \u0111\u01a1n gi\u1ea3n:<\/p>\n<ul>\n<li><strong>Thi\u1ebft K\u1ebf C\u00f4ng T\u1eafc Quay ho\u1eb7c Dao:<\/strong> Thao t\u00e1c th\u1ee7 c\u00f4ng t\u1ea1o ra m\u1ed9t khe h\u1edf kh\u00f4ng kh\u00ed c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y gi\u1eefa c\u00e1c ti\u1ebfp \u0111i\u1ec3m<\/li>\n<li><strong>T\u00e1ch Ti\u1ebfp X\u00fac V\u1eadt L\u00fd:<\/strong> Khe h\u1edf kh\u00f4ng kh\u00ed th\u01b0\u1eddng t\u1eeb 3-6mm \u0111\u1ea3m b\u1ea3o c\u00e1ch ly m\u1ea1ch ho\u00e0n to\u00e0n<\/li>\n<li><strong>Kh\u00f4ng C\u00f3 Linh Ki\u1ec7n \u0110i\u1ec7n T\u1eed:<\/strong> \u0110\u01a1n gi\u1ea3n, \u0111\u00e1ng tin c\u1eady v\u00e0 kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi l\u1ed7i \u0111i\u1ec7n t\u1eed<\/li>\n<li><strong>Thao T\u00e1c Th\u1ee7 C\u00f4ng:<\/strong> Y\u00eau c\u1ea7u truy c\u1eadp v\u1eadt l\u00fd v\u00e0 k\u00edch ho\u1ea1t th\u1ee7 c\u00f4ng<\/li>\n<li><strong>Th\u00f4ng S\u1ed1 K\u1ef9 Thu\u1eadt \u0110i\u1ec3n H\u00ecnh:<\/strong> 600-1000VDC, d\u00f2ng \u0111i\u1ec7n li\u00ean t\u1ee5c 15-200A<\/li>\n<\/ul>\n<p>C\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC VIOX s\u1eed d\u1ee5ng c\u00e1c ti\u1ebfp \u0111i\u1ec3m \u0111\u1ed3ng m\u1ea1 b\u1ea1c ch\u1ecbu t\u1ea3i n\u1eb7ng v\u1edbi thi\u1ebft k\u1ebf bu\u1ed3ng ch\u1ed1ng h\u1ed3 quang, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng \u0111\u00e1ng tin c\u1eady tr\u00ean 10.000+ chu k\u1ef3 chuy\u1ec3n m\u1ea1ch ngay c\u1ea3 trong \u0111i\u1ec1u ki\u1ec7n c\u00f3 t\u1ea3i.<\/p>\n<h3>T\u1eaft M\u00e1y Nhanh: \u0110i\u1ec1u Khi\u1ec3n \u0110i\u1ec7n T\u1eed Th\u00f4ng Minh<\/h3>\n<p>H\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh hi\u1ec7n \u0111\u1ea1i t\u1eadn d\u1ee5ng \u0110i\u1ec7n t\u1eed C\u00f4ng su\u1ea5t C\u1ea5p M\u00f4-\u0111un (MLPE):<\/p>\n<ul>\n<li><strong>Ki\u1ebfn Tr\u00fac T\u00edn Hi\u1ec7u Duy Tr\u00ec Ho\u1ea1t \u0110\u1ed9ng:<\/strong> B\u1ed9 ph\u00e1t li\u00ean t\u1ee5c ph\u00e1t t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n qua giao ti\u1ebfp \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n (PLC) ho\u1eb7c kh\u00f4ng d\u00e2y<\/li>\n<li><strong>Thi\u1ebft B\u1ecb T\u1eaft Ph\u00e2n T\u00e1n:<\/strong> M\u1ed7i m\u00f4-\u0111un n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi ho\u1eb7c nh\u00f3m chu\u1ed7i nh\u1ecf c\u00f3 m\u1ed9t thi\u1ebft b\u1ecb t\u1eaft \u0111i\u1ec7n t\u1eed (b\u1ed9 t\u1ed1i \u01b0u h\u00f3a ho\u1eb7c b\u1ed9 t\u1eaft chuy\u00ean d\u1ee5ng)<\/li>\n<li><strong>T\u1ef1 \u0110\u1ed9ng Ng\u1eaft \u0110i\u1ec7n:<\/strong> Khi t\u00edn hi\u1ec7u duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng ng\u1eebng, c\u00e1c thi\u1ebft b\u1ecb t\u1eaft s\u1ebd t\u1ef1 \u0111\u1ed9ng m\u1edf trong v\u00f2ng 10-30 gi\u00e2y<\/li>\n<li><strong>\u0110i\u1ec1u Khi\u1ec3n C\u1ea5p M\u00f4-\u0111un:<\/strong> M\u1ed7i t\u1ea5m tr\u1edf th\u00e0nh m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n \u00e1p th\u1ea5p \u0111\u01b0\u1ee3c c\u00e1ch ly (th\u01b0\u1eddng &lt;30V)<\/li>\n<li><strong>T\u00edch H\u1ee3p H\u1ec7 Th\u1ed1ng:<\/strong> Ho\u1ea1t \u0111\u1ed9ng li\u1ec1n m\u1ea1ch v\u1edbi c\u00e1c th\u01b0\u01a1ng hi\u1ec7u nh\u01b0 SolarEdge, Tigo, APsystems v\u00e0 Enphase<\/li>\n<\/ul>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd;\" src=\"https:\/\/img.viox.com\/cutaway-technical-illustration-comparing-internal-mechanisms-of-viox-dc-disconnect-switch-and-rapid-shutdown-module-level-device.webp\" alt=\"Cutaway technical illustration comparing internal mechanisms of VIOX DC disconnect switch and rapid shutdown module-level device\" \/><figcaption style=\"color: #666; font-size: 0.9em; margin-top: 5px;\">H\u00ecnh 3: So s\u00e1nh k\u1ef9 thu\u1eadt: \u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc c\u1ee7a Ng\u1eaft k\u1ebft n\u1ed1i DC VIOX (b\u00ean tr\u00e1i) so v\u1edbi \u0111\u1ed9 ph\u1ee9c t\u1ea1p \u0111i\u1ec7n t\u1eed c\u1ee7a M\u00f4-\u0111un T\u1eaft M\u00e1y Nhanh (b\u00ean ph\u1ea3i).<\/figcaption><\/figure>\n<h2>Y\u00eau C\u1ea7u M\u00e3 NEC: Hai Nhi\u1ec7m V\u1ee5 Ri\u00eang Bi\u1ec7t<\/h2>\n<h3>NEC 690.12: Y\u00eau c\u1ea7u t\u1eaft nhanh<\/h3>\n<ul>\n<li><strong>C\u00f3 Hi\u1ec7u L\u1ef1c T\u1eeb:<\/strong> NEC 2014 (\u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 v\u00e0o n\u0103m 2017 v\u00e0 2020)<\/li>\n<li><strong>Y\u00eau C\u1ea7u C\u1ed1t L\u00f5i:<\/strong> C\u00e1c h\u1ec7 th\u1ed1ng PV tr\u00ean ho\u1eb7c trong c\u00e1c t\u00f2a nh\u00e0 ph\u1ea3i c\u00f3 ch\u1ee9c n\u0103ng t\u1eaft m\u00e1y nhanh gi\u00fap gi\u1ea3m \u0111i\u1ec7n \u00e1p trong c\u00e1c d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong ranh gi\u1edbi m\u1ea3ng xu\u1ed1ng 30V tr\u1edf xu\u1ed1ng v\u00e0 80V tr\u1edf xu\u1ed1ng \u0111\u1ed1i v\u1edbi c\u00e1c d\u00e2y d\u1eabn c\u00e1ch m\u1ea3ng h\u01a1n 1 foot, trong v\u00f2ng 30 gi\u00e2y sau khi kh\u1edfi \u0111\u1ed9ng.<\/li>\n<li><strong>Ph\u01b0\u01a1ng Ph\u00e1p Kh\u1edfi T\u1ea1o:<\/strong>\n<ul>\n<li>Ng\u1eaft k\u1ebft n\u1ed1i d\u1ecbch v\u1ee5<\/li>\n<li>Ng\u1eaft k\u1ebft n\u1ed1i h\u1ec7 th\u1ed1ng PV<\/li>\n<li>C\u00f4ng t\u1eafc d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng<\/li>\n<\/ul>\n<\/li>\n<li><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p mi\u1ec5n tr\u1eeb:<\/strong> H\u1ec7 th\u1ed1ng l\u1eafp tr\u00ean m\u1eb7t \u0111\u1ea5t c\u00e1ch xa b\u1ec1 m\u1eb7t t\u00f2a nh\u00e0 h\u01a1n 8 feet<\/li>\n<\/ul>\n<h3>NEC 690.13: Y\u00eau c\u1ea7u v\u1ec1 ng\u1eaft k\u1ebft n\u1ed1i<\/h3>\n<ul>\n<li><strong>M\u1ee5c \u0111\u00edch:<\/strong> Cung c\u1ea5p ph\u01b0\u01a1ng ti\u1ec7n \u0111\u1ec3 ng\u1eaft k\u1ebft n\u1ed1i thi\u1ebft b\u1ecb PV \u0111\u1ec3 ki\u1ec3m tra, b\u1ea3o tr\u00ec ho\u1eb7c thay th\u1ebf<\/li>\n<li><strong>Y\u00eau c\u1ea7u v\u1ec1 v\u1ecb tr\u00ed:<\/strong> Thi\u1ebft b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed d\u1ec5 ti\u1ebfp c\u1eadn<\/li>\n<li><strong>\u0110\u00e1nh d\u1ea5u:<\/strong> Y\u00eau c\u1ea7u \u0111\u00e1nh d\u1ea5u v\u0129nh vi\u1ec5n cho bi\u1ebft ch\u1ee9c n\u0103ng ng\u1eaft k\u1ebft n\u1ed1i<\/li>\n<li><strong>C\u00e1c lo\u1ea1i \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn:<\/strong> C\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i \u0111\u1ecbnh m\u1ee9c ch\u1ecbu t\u1ea3i,<a href=\"https:\/\/test.viox.com\/vi\/mcb\/\">c\u1ea7u dao<\/a>, ho\u1eb7c c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t kh\u00e1c<\/li>\n<li><strong>\u0110i\u1ec3m ch\u00ednh:<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t y\u00eau c\u1ea7u b\u1ea3o tr\u00ec, <strong>kh\u00f4ng<\/strong> m\u1ed9t h\u1ec7 th\u1ed1ng ng\u1eaft \u0111i\u1ec7n kh\u1ea9n c\u1ea5p an to\u00e0n.<\/li>\n<\/ul>\n<h2>B\u1ea3ng so s\u00e1nh<\/h2>\n<h3>So s\u00e1nh t\u00ednh n\u0103ng: Ng\u1eaft k\u1ebft n\u1ed1i DC so v\u1edbi T\u1eaft m\u00e1y nhanh<\/h3>\n<table style=\"width: 100%; border-collapse: collapse; text-align: left; margin-bottom: 20px;\" border=\"1\" cellspacing=\"0\" cellpadding=\"8\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>N\u0103ng<\/th>\n<th>Ng\u1eaft k\u1ebft n\u1ed1i DC<\/th>\n<th>H\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>M\u1ee5c ti\u00eau b\u1ea3o v\u1ec7 ch\u00ednh<\/strong><\/td>\n<td>Th\u1ee3 \u0111i\u1ec7n\/k\u1ef9 thu\u1eadt vi\u00ean<\/td>\n<td>L\u00ednh c\u1ee9u h\u1ecfa\/nh\u00e2n vi\u00ean \u1ee9ng c\u1ee9u \u0111\u1ea7u ti\u00ean<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u00e3 tham chi\u1ebfu<\/strong><\/td>\n<td>NEC 690.13<\/td>\n<td>\u0110\u01af\u1ee2C ... 690.12<\/td>\n<\/tr>\n<tr>\n<td><strong>Ch\u1ee9c n\u0103ng<\/strong><\/td>\n<td>C\u00e1ch ly v\u1eadt l\u00fd<\/td>\n<td>Ng\u1eaft \u0111i\u1ec7n \u00e1p<\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u1ea1m vi ng\u1eaft \u0111i\u1ec7n<\/strong><\/td>\n<td>Ch\u1ec9 bi\u1ebfn t\u1ea7n v\u00e0 ph\u00eda t\u1ea3i<\/td>\n<td>To\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng bao g\u1ed3m ngu\u1ed3n<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110i\u1ec7n \u00e1p m\u1ea3ng sau khi k\u00edch ho\u1ea1t<\/strong><\/td>\n<td>600-1000V (v\u1eabn c\u00f3 \u0111i\u1ec7n)<\/td>\n<td>&lt;30V (trong m\u1ea3ng), &lt;80V (ngo\u00e0i 1 ft)<\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u1ea3n \u1ee8ng Th\u1eddi Gian<\/strong><\/td>\n<td>Ngay l\u1eadp t\u1ee9c (th\u1ee7 c\u00f4ng)<\/td>\n<td>10-30 gi\u00e2y (t\u1ef1 \u0111\u1ed9ng)<\/td>\n<\/tr>\n<tr>\n<td><strong>Lo\u1ea1i C\u00f4ng Ngh\u1ec7<\/strong><\/td>\n<td>C\u00f4ng t\u1eafc c\u01a1<\/td>\n<td>H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t<\/strong><\/td>\n<td>Gi\u1eefa m\u1ea3ng v\u00e0 bi\u1ebfn t\u1ea7n<\/td>\n<td>C\u1ea5p \u0111\u1ed9 m\u00f4-\u0111un ho\u1eb7c c\u1ea5p \u0111\u1ed9 chu\u1ed7i<\/td>\n<\/tr>\n<tr>\n<td><strong>X\u00e1c nh\u1eadn tr\u1ef1c quan<\/strong><\/td>\n<td>V\u1ecb tr\u00ed l\u01b0\u1ee1i dao c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y<\/td>\n<td>Ch\u1ec9 b\u00e1o\/nh\u00e3n tr\u1ea1ng th\u00e1i<\/td>\n<\/tr>\n<tr>\n<td><strong>Y\u00eau c\u1ea7u b\u1ea3o tr\u00ec<\/strong><\/td>\n<td>T\u1ed1i thi\u1ec3u (ki\u1ec3m tra ti\u1ebfp \u0111i\u1ec3m)<\/td>\n<td>X\u00e1c minh h\u1ec7 th\u1ed1ng \u0111\u1ecbnh k\u1ef3<\/td>\n<\/tr>\n<tr>\n<td><strong>Chi Ph\u00ed Kho\u1ea3ng<\/strong><\/td>\n<td>$50-$300 tr\u00ean m\u1ed7i \u0111\u01a1n v\u1ecb<\/td>\n<td>$15-$80 tr\u00ean m\u1ed7i m\u00f4-\u0111un<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>So s\u00e1nh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt<\/h3>\n<table style=\"width: 100%; border-collapse: collapse; text-align: left; margin-bottom: 20px;\" border=\"1\" cellspacing=\"0\" cellpadding=\"8\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt<\/th>\n<th>Ng\u1eaft k\u1ebft n\u1ed1i DC \u0111i\u1ec3n h\u00ecnh<\/th>\n<th>H\u1ec7 th\u1ed1ng RSD \u0111i\u1ec3n h\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u0110i\u1ec7n \u0110\u00e1nh Gi\u00e1<\/strong><\/td>\n<td>600-1000VDC<\/td>\n<td>\u0110i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c<\/td>\n<\/tr>\n<tr>\n<td><strong>Hi\u1ec7n T\u1ea1i Gi\u00e1<\/strong><\/td>\n<td>15-200A li\u00ean t\u1ee5c<\/td>\n<td>Thay \u0111\u1ed5i theo thi\u1ebft b\u1ecb (8-15A \u0111i\u1ec3n h\u00ecnh)<\/td>\n<\/tr>\n<tr>\n<td><strong>Kh\u1ea3 N\u0103ng Ph\u00e1 V\u1ee1<\/strong><\/td>\n<td>\u0110\u1ea7y t\u1ea3i (\u0111\u1ecbnh m\u1ee9c DC)<\/td>\n<td>Chuy\u1ec3n m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>Nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng<\/strong><\/td>\n<td>-40\u00b0C \u0111\u1ebfn +80\u00b0C<\/td>\n<td>-40\u00b0C \u0111\u1ebfn +85\u00b0C<\/td>\n<\/tr>\n<tr>\n<td><strong>X\u1ebfp h\u1ea1ng bao v\u00e2y<\/strong><\/td>\n<td>NEMA 3R\/4X<\/td>\n<td>G\u1eafn tr\u00ean m\u00f4-\u0111un (ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft)<\/td>\n<\/tr>\n<tr>\n<td><strong>Chu k\u1ef3 chuy\u1ec3n m\u1ea1ch<\/strong><\/td>\n<td>10.000+ c\u01a1<\/td>\n<td>100.000+ \u0111i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u1ea5t \u0110i\u1ec7n<\/strong><\/td>\n<td>Kh\u00f4ng (kho\u1ea3ng c\u00e1ch kh\u00f4ng kh\u00ed)<\/td>\n<td>&lt;0.5% (b\u1ed9 t\u1ed1i \u01b0u h\u00f3a \u0111i\u1ec3n h\u00ecnh)<\/td>\n<\/tr>\n<tr>\n<td><strong>Giao ti\u1ebfp<\/strong><\/td>\n<td>Kh\u00f4ng c\u00f3<\/td>\n<td>PLC, kh\u00f4ng d\u00e2y ho\u1eb7c c\u00f3 d\u00e2y<\/td>\n<\/tr>\n<tr>\n<td><strong>Ch\u1ebf \u0110\u1ed9 H\u1ecfng H\u00f3c<\/strong><\/td>\n<td>\u0110eo k\u00ednh \u00e1p tr\u00f2ng<\/td>\n<td>L\u1ed7i th\u00e0nh ph\u1ea7n \u0111i\u1ec7n t\u1eed<\/td>\n<\/tr>\n<tr>\n<td><strong>Kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec t\u1ea1i ch\u1ed7<\/strong><\/td>\n<td>Ti\u1ebfp \u0111i\u1ec3m c\u00f3 th\u1ec3 thay th\u1ebf<\/td>\n<td>Thay th\u1ebf to\u00e0n b\u1ed9 \u0111\u01a1n v\u1ecb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Y\u00eau c\u1ea7u l\u1eafp \u0111\u1eb7t v\u00e0 tu\u00e2n th\u1ee7<\/h3>\n<table style=\"width: 100%; border-collapse: collapse; text-align: left; margin-bottom: 20px;\" border=\"1\" cellspacing=\"0\" cellpadding=\"8\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th>Y\u00eau c\u1ea7u<\/th>\n<th>Ng\u1eaft k\u1ebft n\u1ed1i DC<\/th>\n<th>T\u1eaft m\u00e1y nhanh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>B\u1eaft bu\u1ed9c t\u1eeb<\/strong><\/td>\n<td>NEC 1984 (690.13)<\/td>\n<td>NEC 2014 (690.12)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u00c1p d\u1ee5ng cho<\/strong><\/td>\n<td>T\u1ea5t c\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng PV<\/td>\n<td>C\u00e1c h\u1ec7 th\u1ed1ng tr\u00ean\/trong c\u00e1c t\u00f2a nh\u00e0<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u00e1c tr\u01b0\u1eddng h\u1ee3p mi\u1ec5n tr\u1eeb<\/strong><\/td>\n<td>Kh\u00f4ng c\u00f3 tr\u01b0\u1eddng h\u1ee3p n\u00e0o cho h\u1ec7 th\u1ed1ng n\u1ed1i l\u01b0\u1edbi<\/td>\n<td>L\u1eafp \u0111\u1eb7t tr\u00ean m\u1eb7t \u0111\u1ea5t &gt;8 ft t\u1eeb t\u00f2a nh\u00e0<\/td>\n<\/tr>\n<tr>\n<td><strong>Y\u00eau c\u1ea7u v\u1ec1 nh\u00e3n<\/strong><\/td>\n<td>\u201cNg\u1eaft k\u1ebft n\u1ed1i h\u1ec7 th\u1ed1ng PV\u201d<\/td>\n<td>\u201cT\u1eaft nhanh h\u1ec7 th\u1ed1ng PV\u201d + v\u1ecb tr\u00ed kh\u1edfi t\u1ea1o<\/td>\n<\/tr>\n<tr>\n<td><strong>Kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn<\/strong><\/td>\n<td>D\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn<\/td>\n<td>B\u1ed9 kh\u1edfi t\u1ea1o d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn<\/td>\n<\/tr>\n<tr>\n<td><strong>Tr\u1ecdng t\u00e2m c\u1ee7a thanh tra<\/strong><\/td>\n<td>\u0110\u00e1nh gi\u00e1 v\u00e0 v\u1ecb tr\u00ed th\u00edch h\u1ee3p<\/td>\n<td>Ki\u1ec3m tra tu\u00e2n th\u1ee7 \u0111i\u1ec7n \u00e1p<\/td>\n<\/tr>\n<tr>\n<td><strong>Ch\u1ee9ng nh\u1eadn c\u1ee7a b\u00ean th\u1ee9 ba<\/strong><\/td>\n<td>UL 98B (c\u00f4ng t\u1eafc k\u00edn)<\/td>\n<td>UL 1741 + UL 3741 (RSD)<\/td>\n<\/tr>\n<tr>\n<td><strong>Gi\u1ea3i ph\u00e1p k\u1ebft h\u1ee3p kh\u1ea3 thi<\/strong><\/td>\n<td>C\u00f3 - c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 b\u1ed9 kh\u1edfi t\u1ea1o RSD<\/td>\n<td>Y\u00eau c\u1ea7u c\u00e1c thi\u1ebft b\u1ecb ng\u1eaft \u1edf m\u1ea3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Ch\u00fang c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng c\u00f9ng nhau kh\u00f4ng? T\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng<\/h2>\n<p>C\u00e1c h\u1ec7 th\u1ed1ng PV ph\u1ee9c t\u1ea1p v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh nh\u1ea5t t\u00edch h\u1ee3p c\u1ea3 hai c\u00f4ng ngh\u1ec7 v\u00e0o m\u1ed9t ki\u1ebfn tr\u00fac an to\u00e0n th\u1ed1ng nh\u1ea5t.<\/p>\n<h3>Ng\u1eaft k\u1ebft n\u1ed1i DC nh\u01b0 B\u1ed9 kh\u1edfi t\u1ea1o RSD<\/h3>\n<p>M\u1ed9t c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 ph\u1ee5c v\u1ee5 vai tr\u00f2 k\u00e9p:<\/p>\n<ol>\n<li><strong>Ch\u1ee9c n\u0103ng c\u00e1ch ly truy\u1ec1n th\u1ed1ng:<\/strong> Cung c\u1ea5p ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i NEC 690.13 b\u1eaft bu\u1ed9c<\/li>\n<li><strong>Thi\u1ebft b\u1ecb k\u00edch ho\u1ea1t RSD:<\/strong> Ho\u1ea1t \u0111\u1ed9ng nh\u01b0 thi\u1ebft b\u1ecb kh\u1edfi t\u1ea1o cho h\u1ec7 th\u1ed1ng t\u1eaft nhanh<\/li>\n<\/ol>\n<p><strong>Ph\u01b0\u01a1ng ph\u00e1p tri\u1ec3n khai:<\/strong><\/p>\n<p>Khi ng\u1eaft k\u1ebft n\u1ed1i DC \u0111\u01b0\u1ee3c m\u1edf, n\u00f3 \u0111\u1ed3ng th\u1eddi:<\/p>\n<ul>\n<li>C\u1eaft ngu\u1ed3n \u0111i\u1ec7n cho bi\u1ebfn t\u1ea7n (ch\u1ee9c n\u0103ng c\u00e1ch ly)<\/li>\n<li>L\u00e0m gi\u00e1n \u0111o\u1ea1n ngu\u1ed3n \u0111i\u1ec7n cho b\u1ed9 ph\u00e1t RSD<\/li>\n<li>B\u1ed9 ph\u00e1t ng\u1eebng ph\u00e1t t\u00edn hi\u1ec7u duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng<\/li>\n<li>C\u00e1c thi\u1ebft b\u1ecb ng\u1eaft m\u1ee9c m\u00f4-\u0111un t\u1ef1 \u0111\u1ed9ng m\u1edf<\/li>\n<li>\u0110i\u1ec7n \u00e1p m\u1ea3ng gi\u1ea3m xu\u1ed1ng m\u1ee9c an to\u00e0n trong v\u00f2ng 30 gi\u00e2y<\/li>\n<\/ul>\n<p><strong>Gi\u1ea3i ph\u00e1p VIOX:<\/strong> C\u00e1c c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i VIOX DC \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u1edbi c\u00e1c t\u00f9y ch\u1ecdn ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng RSD. C\u00e1c ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 n\u00e0y c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u cho b\u1ed9 \u0111i\u1ec1u khi\u1ec3n RSD ho\u1eb7c tr\u1ef1c ti\u1ebfp l\u00e0m gi\u00e1n \u0111o\u1ea1n ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a b\u1ed9 ph\u00e1t, cung c\u1ea5p kh\u1ea3 n\u0103ng kh\u1edfi t\u1ea1o \u0111\u00e1ng tin c\u1eady trong khi v\u1eabn duy tr\u00ec kh\u1ea3 n\u0103ng c\u00e1ch ly c\u01a1 h\u1ecdc m\u1ea1nh m\u1ebd m\u00e0 c\u00e1c nh\u00e0 th\u1ea7u \u0111i\u1ec7n tin d\u00f9ng.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd;\" src=\"https:\/\/img.viox.com\/complete-pv-safety-system-diagram-showing-viox-dc-disconnect-switch-integrated-with-rapid-shutdown-transmitter-and-module-level-devices-in-compliant-installation.webp\" alt=\"Complete PV safety system diagram showing VIOX DC disconnect switch integrated with rapid shutdown transmitter and module-level devices in compliant installation\" \/><figcaption style=\"color: #666; font-size: 0.9em; margin-top: 5px;\">H\u00ecnh 4: M\u1ed9t h\u1ec7 th\u1ed1ng an to\u00e0n PV tu\u00e2n th\u1ee7 \u0111\u1ea7y \u0111\u1ee7 cho th\u1ea5y c\u00e1ch Ng\u1eaft k\u1ebft n\u1ed1i VIOX DC ho\u1ea1t \u0111\u1ed9ng nh\u01b0 \u0111i\u1ec3m kh\u1edfi t\u1ea1o trung t\u00e2m cho B\u1ed9 ph\u00e1t t\u1eaft nhanh.<\/figcaption><\/figure>\n<h3>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p hay nh\u1ea5t trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng<\/h3>\n<p><strong>\u0110\u1ed1i v\u1edbi c\u00e1c c\u00e0i \u0111\u1eb7t m\u1edbi:<\/strong><\/p>\n<ol>\n<li>Ch\u1ec9 \u0111\u1ecbnh ng\u1eaft k\u1ebft n\u1ed1i DC v\u1edbi c\u00e1c ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 \u0111\u1ec3 t\u00edch h\u1ee3p RSD<\/li>\n<li>C\u00e0i \u0111\u1eb7t b\u1ed9 ph\u00e1t RSD v\u1edbi ngu\u1ed3n \u0111i\u1ec7n l\u1ea5y tr\u01b0\u1edbc ng\u1eaft k\u1ebft n\u1ed1i<\/li>\n<li>\u0110\u1ecbnh c\u1ea5u h\u00ecnh ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 \u0111\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a b\u1ed9 ph\u00e1t<\/li>\n<li>C\u00e0i \u0111\u1eb7t c\u00e1c thi\u1ebft b\u1ecb ng\u1eaft m\u1ee9c m\u00f4-\u0111un (b\u1ed9 t\u1ed1i \u01b0u h\u00f3a ho\u1eb7c c\u00e1c \u0111\u01a1n v\u1ecb ng\u1eaft chuy\u00ean d\u1ee5ng)<\/li>\n<li>G\u1eafn nh\u00e3n c\u1ea3 ch\u1ee9c n\u0103ng ng\u1eaft k\u1ebft n\u1ed1i DC v\u00e0 kh\u1edfi t\u1ea1o RSD<\/li>\n<li>X\u00e1c minh tu\u00e2n th\u1ee7 \u0111i\u1ec7n \u00e1p trong qu\u00e1 tr\u00ecnh ch\u1ea1y th\u1eed<\/li>\n<\/ol>\n<p><strong>\u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n c\u1ea3i t\u1ea1o:<\/strong><\/p>\n<ol>\n<li>\u0110\u00e1nh gi\u00e1 ng\u1eaft k\u1ebft n\u1ed1i DC hi\u1ec7n c\u00f3 v\u1ec1 kh\u1ea3 n\u0103ng t\u00edch h\u1ee3p RSD<\/li>\n<li>N\u00e2ng c\u1ea5p n\u1ebfu c\u1ea7n thi\u1ebft l\u00ean m\u00f4 h\u00ecnh c\u00f3 ti\u1ebfp \u0111i\u1ec3m ph\u1ee5<\/li>\n<li>Th\u00eam b\u1ed9 ph\u00e1t RSD v\u00e0 c\u00e1c thi\u1ebft b\u1ecb m\u1ee9c m\u00f4-\u0111un<\/li>\n<li>\u0110\u1ecbnh c\u1ea5u h\u00ecnh l\u1ea1i h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n \u0111\u1ec3 cho ph\u00e9p ho\u1ea1t \u0111\u1ed9ng t\u00edch h\u1ee3p<\/li>\n<li>C\u1eadp nh\u1eadt nh\u00e3n \u0111\u1ec3 ph\u1ea3n \u00e1nh ch\u1ee9c n\u0103ng k\u00e9p<\/li>\n<li>Ti\u1ebfn h\u00e0nh ki\u1ec3m tra x\u00e1c minh \u0111i\u1ec7n \u00e1p<\/li>\n<\/ol>\n<h2>T\u1ea1i sao c\u1ea3 hai h\u1ec7 th\u1ed1ng \u0111\u1ec1u kh\u00f4ng th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng<\/h2>\n<h3>Ph\u00e9p lo\u1ea1i suy \u201cCon r\u1eafn \u0111\u01b0\u1ee3c n\u1ea1p n\u0103ng l\u01b0\u1ee3ng\u201d<\/h3>\n<p>H\u00e3y xem x\u00e9t ph\u00e9p lo\u1ea1i suy m\u1ea1nh m\u1ebd n\u00e0y t\u1eeb c\u00e1c chuy\u00ean gia an to\u00e0n \u0111i\u1ec7n: Ng\u1eaft k\u1ebft n\u1ed1i DC m\u00e0 kh\u00f4ng t\u1eaft nhanh gi\u1ed1ng nh\u01b0 \u0111\u00f3ng c\u1eeda m\u1ed9t c\u00e1i l\u1ed3ng ch\u1ee9a m\u1ed9t con r\u1eafn \u0111\u1ed9c. Con r\u1eafn (\u0111i\u1ec7n \u00e1p cao) v\u1eabn c\u00f2n s\u1ed1ng v\u00e0 nguy hi\u1ec3m \u2014 n\u00f3 ch\u1ec9 b\u1ecb nh\u1ed1t sau c\u00e1nh c\u1eeda \u0111\u00f3. B\u1ea5t k\u1ef3 ai c\u1ea7n ti\u1ebfp c\u1eadn c\u00e1c b\u1ee9c t\u01b0\u1eddng, \u1ed1ng d\u1eabn ho\u1eb7c m\u00e1i nh\u00e0 n\u01a1i c\u00e1c d\u00e2y d\u1eabn \u0111\u00f3 ch\u1ea1y v\u1eabn c\u00f3 nguy c\u01a1.<\/p>\n<p>T\u1eaft nhanh th\u1ef1c s\u1ef1 \u201cgi\u1ebft ch\u1ebft con r\u1eafn\u201d \u2014 gi\u1ea3m \u0111i\u1ec7n \u00e1p xu\u1ed1ng m\u1ee9c an to\u00e0n trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng, cho ph\u00e9p l\u00ednh c\u1ee9u h\u1ecfa c\u1eaft qua m\u00e1i nh\u00e0, t\u01b0\u1eddng v\u00e0 \u1ed1ng d\u1eabn m\u00e0 kh\u00f4ng c\u00f3 nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt.<\/p>\n<h3>C\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf<\/h3>\n<p><strong>T\u00ecnh hu\u1ed1ng 1 \u2013 T\u00ecnh hu\u1ed1ng kh\u1ea9n c\u1ea5p v\u1ec1 h\u1ecfa ho\u1ea1n:<\/strong><\/p>\n<ul>\n<li>Kh\u00f4ng c\u00f3 RSD: L\u00ednh c\u1ee9u h\u1ecfa ph\u1ea3i coi t\u1ea5t c\u1ea3 c\u00e1c d\u00e2y d\u1eabn h\u1ec7 th\u1ed1ng PV l\u00e0 \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n \u1edf m\u1ee9c 600V+, h\u1ea1n ch\u1ebf nghi\u00eam tr\u1ecdng c\u00e1c chi\u1ebfn thu\u1eadt ch\u1eefa ch\u00e1y<\/li>\n<li>V\u1edbi RSD: Sau khi kh\u1edfi t\u1ea1o, c\u00e1c d\u00e2y d\u1eabn trong to\u00e0n b\u1ed9 t\u00f2a nh\u00e0 \u1edf m\u1ee9c &lt;80V, cho ph\u00e9p t\u1ea5n c\u00f4ng h\u1ecfa ho\u1ea1n quy\u1ebft li\u1ec7t<\/li>\n<\/ul>\n<p><strong>T\u00ecnh hu\u1ed1ng 2 \u2013 B\u1ea3o tr\u00ec m\u00e1i nh\u00e0:<\/strong><\/p>\n<ul>\n<li>Kh\u00f4ng c\u00f3 RSD: Th\u1ee3 \u0111i\u1ec7n m\u1edf ng\u1eaft k\u1ebft n\u1ed1i DC nh\u01b0ng v\u1eabn ph\u1ea3i coi t\u1ea5t c\u1ea3 h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n c\u1ee7a m\u1ea3ng l\u00e0 \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n<\/li>\n<li>V\u1edbi RSD: Sau khi kh\u1edfi t\u1ea1o, ngay c\u1ea3 khi ti\u1ebfp x\u00fac tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c d\u00e2y d\u1eabn c\u1ee7a m\u1ea3ng c\u0169ng g\u00e2y ra nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt t\u1ed1i thi\u1ec3u<\/li>\n<\/ul>\n<p><strong>T\u00ecnh hu\u1ed1ng 3 \u2013 Ng\u1eaft k\u1ebft n\u1ed1i kh\u1ea9n c\u1ea5p:<\/strong><\/p>\n<ul>\n<li>Kh\u00f4ng c\u00f3 RSD: Vi\u1ec7c m\u1edf b\u1ed9 ng\u1eaft k\u1ebft n\u1ed1i DC s\u1ebd d\u1eebng bi\u1ebfn t\u1ea7n nh\u01b0ng kh\u00f4ng gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c c\u00e1c nguy c\u01a1 h\u1ed3 quang \u0111i\u1ec7n trong h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n c\u1ee7a m\u1ea3ng pin m\u1eb7t tr\u1eddi<\/li>\n<li>C\u00f3 RSD: Vi\u1ec7c ng\u1eaft \u0111i\u1ec7n to\u00e0n h\u1ec7 th\u1ed1ng lo\u1ea1i b\u1ecf kh\u1ea3 n\u0103ng x\u1ea3y ra h\u1ed3 quang \u0111i\u1ec7n trong to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t<\/li>\n<\/ul>\n<h2>C\u00e1c gi\u1ea3i ph\u00e1p t\u00edch h\u1ee3p VIOX<\/h2>\n<p>VIOX Electric thi\u1ebft k\u1ebf c\u00e1c c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC \u0111\u1eb7c bi\u1ec7t cho c\u00e1c y\u00eau c\u1ea7u t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng PV hi\u1ec7n \u0111\u1ea1i. D\u00f2ng s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u0111\u00e1p \u1ee9ng nhu c\u1ea7u quan tr\u1ecdng v\u1ec1 kh\u1edfi t\u1ea1o t\u1eaft m\u00e1y nhanh ch\u00f3ng \u0111\u00e1ng tin c\u1eady \u0111\u1ed3ng th\u1eddi duy tr\u00ec kh\u1ea3 n\u0103ng c\u00e1ch ly c\u01a1 h\u1ecdc m\u1ea1nh m\u1ebd m\u00e0 quy \u0111\u1ecbnh y\u00eau c\u1ea7u.<\/p>\n<h3>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a b\u1ed9 ng\u1eaft k\u1ebft n\u1ed1i DC VIOX:<\/h3>\n<ul>\n<li><strong>Ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 s\u1eb5n s\u00e0ng cho RSD:<\/strong> Ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t t\u1ea1i nh\u00e0 m\u00e1y ho\u1eb7c c\u00f3 th\u1ec3 l\u1eafp \u0111\u1eb7t t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c cho \u0111i\u1ec1u khi\u1ec3n b\u1ed9 ph\u00e1t RSD<\/li>\n<li><strong>V\u1eadt li\u1ec7u ti\u1ebfp x\u00fac m\u1ea1nh m\u1ebd:<\/strong> \u0110\u1ed3ng m\u1ea1 b\u1ea1c v\u1edbi thi\u1ebft k\u1ebf bu\u1ed3ng ch\u1ed1ng h\u1ed3 quang<\/li>\n<li><strong>V\u1ecf ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft:<\/strong> NEMA 3R v\u00e0 4X \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng cho m\u1ecdi \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu<\/li>\n<li><strong>Ch\u1ec9 b\u00e1o Tr\u1ea1ng th\u00e1i R\u00f5 r\u00e0ng:<\/strong> Tay c\u1ea7m xoay c\u00f3 kh\u00f3a v\u1edbi v\u1ecb tr\u00ed l\u01b0\u1ee1i c\u1eaft c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch ph\u1ed5 qu\u00e1t:<\/strong> Ho\u1ea1t \u0111\u1ed9ng li\u1ec1n m\u1ea1ch v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c nh\u00e3n hi\u1ec7u h\u1ec7 th\u1ed1ng RSD l\u1edbn (SolarEdge, Tigo, APsystems, Enphase)<\/li>\n<li><strong>\u0110\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn b\u1edfi b\u00ean th\u1ee9 ba:<\/strong> UL 98B \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea cho c\u00e1c \u1ee9ng d\u1ee5ng quang \u0111i\u1ec7n<\/li>\n<li><strong>X\u1ebfp h\u1ea1ng m\u1edf r\u1ed9ng:<\/strong> C\u00f3 s\u1eb5n c\u00e1c ki\u1ec3u m\u00e1y 600VDC v\u00e0 1000VDC, t\u1eeb 15A \u0111\u1ebfn 200A<\/li>\n<\/ul>\n<h3>Kh\u1ea3 n\u0103ng T\u01b0\u01a1ng th\u00edch H\u1ec7 th\u1ed1ng<\/h3>\n<p>C\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i VIOX t\u00edch h\u1ee3p v\u1edbi:<\/p>\n<ul>\n<li><strong>SolarEdge:<\/strong> H\u1ec7 th\u1ed1ng t\u1ed1i \u01b0u h\u00f3a c\u00f4ng su\u1ea5t v\u1edbi c\u00f4ng ngh\u1ec7 SafeDC<\/li>\n<li><strong>Tigo:<\/strong> N\u1ec1n t\u1ea3ng t\u1ed1i \u01b0u h\u00f3a v\u00e0 t\u1eaft m\u00e1y nhanh TS4<\/li>\n<li><strong>APsystems:<\/strong> Gi\u1ea3i ph\u00e1p t\u1eaft m\u00e1y nhanh microinverter<\/li>\n<li><strong>Enphase:<\/strong> H\u1ec7 th\u1ed1ng microinverter d\u00f2ng IQ8<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng RSD \u0111\u1ed9c l\u1eadp:<\/strong> H\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh b\u1ed9 ph\u00e1t\/b\u1ed9 thu chung<\/li>\n<\/ul>\n<h2>Nh\u1eefng C\u00e2u H\u1ecfi Th\u01b0\u1eddng<\/h2>\n<p><strong>C\u00e2u h\u1ecfi 1: T\u00f4i c\u00f3 c\u1ea7n c\u1ea3 b\u1ed9 ng\u1eaft k\u1ebft n\u1ed1i DC v\u00e0 h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh kh\u00f4ng?<\/strong><\/p>\n<p>V\u00e2ng, ho\u00e0n to\u00e0n ch\u00ednh x\u00e1c. Ch\u00fang ph\u1ee5c v\u1ee5 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 quy chu\u1ea9n v\u00e0 m\u1ee5c ti\u00eau an to\u00e0n kh\u00e1c nhau. NEC 690.13 y\u00eau c\u1ea7u m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i \u0111\u1ec3 b\u1ea3o tr\u00ec (ng\u1eaft k\u1ebft n\u1ed1i DC), trong khi NEC 690.12 y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng t\u1eaft m\u00e1y nhanh ch\u00f3ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho ng\u01b0\u1eddi \u1ee9ng c\u1ee9u kh\u1ea9n c\u1ea5p. C\u1ea3 hai \u0111\u1ec1u l\u00e0 b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng PV g\u1eafn tr\u00ean m\u00e1i nh\u00e0 ho\u1eb7c t\u00edch h\u1ee3p v\u00e0o t\u00f2a nh\u00e0.<\/p>\n<p><strong>C\u00e2u h\u1ecfi 2: T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ed9 ng\u1eaft m\u1ea1ch thay v\u00ec c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC kh\u00f4ng?<\/strong><\/p>\n<p>\u0110\u00fang v\u1eady, m\u1ed9t \u00e1pt\u00f4m\u00e1t DC \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c ph\u00f9 h\u1ee3p c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u ng\u1eaft m\u1ea1ch theo NEC 690.13 v\u00e0 c\u0169ng c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 b\u1ed9 kh\u1edfi t\u1ea1o RSD. Tuy nhi\u00ean, nhi\u1ec1u nh\u00e0 l\u1eafp \u0111\u1eb7t th\u00edch s\u1eed d\u1ee5ng c\u00f4ng t\u1eafc ng\u1eaft m\u1ea1ch ki\u1ec3u xoay v\u00ec v\u1ecb tr\u00ed l\u01b0\u1ee1i dao c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y v\u00e0 kh\u1ea3 n\u0103ng c\u00e1ch ly c\u01a1 h\u1ecdc ch\u1eafc ch\u1eafn.<\/p>\n<p><strong>C\u00e2u h\u1ecfi 3: L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 x\u00e1c minh h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh c\u1ee7a t\u00f4i \u0111ang ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng?<\/strong><\/p>\n<p>Vi\u1ec7c x\u00e1c minh \u0111\u00fang c\u00e1ch \u0111\u00f2i h\u1ecfi ph\u1ea3i \u0111o \u0111i\u1ec7n \u00e1p t\u1ea1i c\u00e1c d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t sau khi kh\u1edfi \u0111\u1ed9ng RSD b\u1eb1ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng true-RMS c\u00f3 kh\u1ea3 n\u0103ng \u0111o \u0111i\u1ec7n \u00e1p DC. \u0110i\u1ec7n \u00e1p trong ph\u1ea1m vi m\u1ea3ng ph\u1ea3i \u226430V v\u00e0 \u226480V ngo\u00e0i 1 foot (kho\u1ea3ng 30cm) t\u1eeb m\u1ea3ng, \u0111\u01b0\u1ee3c \u0111o trong v\u00f2ng 30 gi\u00e2y sau khi kh\u1edfi \u0111\u1ed9ng.<\/p>\n<p><strong>C\u00e2u h\u1ecfi 4: \u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu b\u1ed9 ph\u00e1t RSD b\u1ecb l\u1ed7i?<\/strong><\/p>\n<p>H\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng RSD s\u1eed d\u1ee5ng ki\u1ebfn tr\u00fac t\u00edn hi\u1ec7u \u201ckeep-alive\u201d, c\u00f3 ngh\u0129a l\u00e0 vi\u1ec7c kh\u00f4ng c\u00f3 t\u00edn hi\u1ec7u s\u1ebd g\u00e2y ra t\u1eaft m\u00e1y. N\u1ebfu b\u1ed9 ph\u00e1t b\u1ecb l\u1ed7i, c\u00e1c thi\u1ebft b\u1ecb c\u1ea5p m\u00f4-\u0111un s\u1ebd m\u1eb7c \u0111\u1ecbnh \u1edf tr\u1ea1ng th\u00e1i t\u1eaft, ng\u1eaft \u0111i\u1ec7n h\u1ec7 th\u1ed1ng. Thi\u1ebft k\u1ebf an to\u00e0n khi h\u1ecfng h\u00f3c n\u00e0y \u0111\u1ea3m b\u1ea3o an to\u00e0n ngay c\u1ea3 khi c\u00e1c th\u00e0nh ph\u1ea7n b\u1ecb l\u1ed7i.<\/p>\n<p><strong>C\u00e2u h\u1ecfi 5: C\u00f3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7 n\u00e0o \u0111\u1ed1i v\u1edbi c\u00e1c y\u00eau c\u1ea7u t\u1eaft m\u00e1y nhanh kh\u00f4ng?<\/strong><\/p>\n<p>\u0110\u00fang v\u1eady. C\u00e1c d\u00e3y PV l\u1eafp tr\u00ean m\u1eb7t \u0111\u1ea5t n\u1eb1m c\u00e1ch xa h\u01a1n 8 feet (kho\u1ea3ng 2.4 m\u00e9t) so v\u1edbi b\u1ea5t k\u1ef3 b\u1ec1 m\u1eb7t t\u00f2a nh\u00e0 l\u1ed9 thi\u00ean ho\u1eb7c c\u00e1c c\u1ea5u tr\u00fac kh\u00e1c \u0111\u01b0\u1ee3c mi\u1ec5n c\u00e1c y\u00eau c\u1ea7u t\u1eaft m\u00e1y nhanh NEC 690.12. Tuy nhi\u00ean, y\u00eau c\u1ea7u ng\u1eaft k\u1ebft n\u1ed1i DC theo 690.13 v\u1eabn \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng.<\/p>\n<p><strong>C\u00e2u h\u1ecfi 6: L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 b\u1ed9 ng\u1eaft k\u1ebft n\u1ed1i DC k\u00edch ho\u1ea1t h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh?<\/strong><\/p>\n<p>Khi \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh nh\u01b0 m\u1ed9t b\u1ed9 kh\u1edfi t\u1ea1o RSD, c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC c\u00f3 th\u1ec3 tr\u1ef1c ti\u1ebfp ng\u1eaft ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ebfn b\u1ed9 ph\u00e1t RSD ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 \u0111\u1ec3 b\u00e1o hi\u1ec7u cho b\u1ed9 \u0111i\u1ec1u khi\u1ec3n RSD. N\u1ebfu kh\u00f4ng c\u00f3 ngu\u1ed3n \u0111i\u1ec7n ho\u1eb7c t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n, b\u1ed9 ph\u00e1t s\u1ebd ng\u1eebng ph\u00e1t t\u00edn hi\u1ec7u duy tr\u00ec ho\u1ea1t \u0111\u1ed9ng, khi\u1ebfn c\u00e1c thi\u1ebft b\u1ecb c\u1ea5p m\u00f4-\u0111un t\u1ef1 \u0111\u1ed9ng m\u1edf.<\/p>\n<p><strong>C\u00e2u h\u1ecfi 7: M\u1ee9c \u0111i\u1ec7n \u00e1p n\u00e0o \u0111\u01b0\u1ee3c coi l\u00e0 \u201can to\u00e0n\u201d theo NEC 690.12?<\/strong><\/p>\n<p>\u0110\u1ed1i v\u1edbi d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u00ean trong ranh gi\u1edbi m\u1ea3ng: \u226430V trong v\u00f2ng 30 gi\u00e2y sau khi kh\u1edfi t\u1ea1o. \u0110\u1ed1i v\u1edbi d\u00e2y d\u1eabn c\u00e1ch xa ranh gi\u1edbi m\u1ea3ng h\u01a1n 1 foot: \u226480V trong v\u00f2ng 30 gi\u00e2y. C\u00e1c m\u1ee9c \u0111i\u1ec7n \u00e1p n\u00e0y \u0111\u01b0\u1ee3c coi l\u00e0 \u0111\u1ee7 th\u1ea5p \u0111\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt cho ng\u01b0\u1eddi \u1ee9ng c\u1ee9u kh\u1ea9n c\u1ea5p.<\/p>\n<h2>K\u1ebft lu\u1eadn: X\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng an to\u00e0n ho\u00e0n ch\u1ec9nh<\/h2>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC v\u00e0 h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh th\u1ec3 hi\u1ec7n m\u1ed9t s\u1ef1 ph\u00e1t tri\u1ec3n c\u01a1 b\u1ea3n trong t\u01b0 duy an to\u00e0n PV. C\u00e1c quy t\u1eafc \u0111i\u1ec7n hi\u1ec7n \u0111\u1ea1i nh\u1eadn ra r\u1eb1ng vi\u1ec7c b\u1ea3o v\u1ec7 nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec (th\u00f4ng qua c\u00e1ch ly) v\u00e0 b\u1ea3o v\u1ec7 ng\u01b0\u1eddi \u1ee9ng c\u1ee9u kh\u1ea9n c\u1ea5p (th\u00f4ng qua ng\u1eaft \u0111i\u1ec7n) \u0111\u00f2i h\u1ecfi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p k\u1ef9 thu\u1eadt kh\u00e1c nhau.<\/p>\n<p>VIOX Electric cam k\u1ebft cung c\u1ea5p cho c\u00e1c nh\u00e0 th\u1ea7u \u0111i\u1ec7n v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u00e1c c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i kh\u00f4ng ch\u1ec9 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u00e1ch ly truy\u1ec1n th\u1ed1ng m\u00e0 c\u00f2n t\u00edch h\u1ee3p li\u1ec1n m\u1ea1ch v\u00e0o c\u00e1c ki\u1ebfn tr\u00fac an to\u00e0n t\u1eaft m\u00e1y nhanh to\u00e0n di\u1ec7n. C\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i \u0111\u00f3ng vai tr\u00f2 l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 h\u1ecdc \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 k\u00edch ho\u1ea1t c\u00e1c h\u1ec7 th\u1ed1ng an to\u00e0n \u0111i\u1ec7n t\u1eed th\u00f4ng minh\u2014k\u1ebft h\u1ee3p nh\u1eefng g\u00ec t\u1ed1t nh\u1ea5t c\u1ee7a c\u1ea3 hai c\u00f4ng ngh\u1ec7.<\/p>\n<p>Khi ch\u1ec9 \u0111\u1ecbnh c\u00e1c th\u00e0nh ph\u1ea7n cho qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t PV ti\u1ebfp theo c\u1ee7a b\u1ea1n, h\u00e3y nh\u1edb: ch\u1ec9 m\u1ed9t b\u1ed9 ng\u1eaft k\u1ebft n\u1ed1i DC s\u1ebd \u0111\u1ec3 l\u1ea1i \u0111i\u1ec7n \u00e1p nguy hi\u1ec3m trong to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n c\u1ee7a m\u1ea3ng pin m\u1eb7t tr\u1eddi. Ch\u1ec9 b\u1eb1ng c\u00e1ch t\u00edch h\u1ee3p c\u1ea3 hai c\u00f4ng ngh\u1ec7, b\u1ea1n m\u1edbi t\u1ea1o ra m\u1ed9t h\u1ec7 th\u1ed1ng th\u1ef1c s\u1ef1 an to\u00e0n, b\u1ea3o v\u1ec7 c\u1ea3 nh\u00e2n vi\u00ean b\u1ea3o tr\u00ec v\u00e0 ng\u01b0\u1eddi \u1ee9ng c\u1ee9u \u0111\u1ea7u ti\u00ean.<\/p>\n<p><strong>B\u1ea1n \u0111\u00e3 s\u1eb5n s\u00e0ng ch\u1ec9 \u0111\u1ecbnh c\u00e1c gi\u1ea3i ph\u00e1p an to\u00e0n PV t\u00edch h\u1ee3p, tu\u00e2n th\u1ee7 ch\u01b0a?<\/strong> H\u00e3y li\u00ean h\u1ec7 v\u1edbi \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a VIOX Electric \u0111\u1ec3 th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1c c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i DC \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho vi\u1ec7c t\u00edch h\u1ee3p h\u1ec7 th\u1ed1ng t\u1eaft m\u00e1y nhanh hi\u1ec7n \u0111\u1ea1i. C\u00e1c k\u1ef9 s\u01b0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a quy \u0111\u1ecbnh \u0111\u1ed3ng th\u1eddi t\u1ed1i \u0111a h\u00f3a \u0111\u1ed9 tin c\u1eady v\u00e0 an to\u00e0n.<\/p>\n<\/div>\n<div class=\"simg-pop-btn\" style=\"top: 571.656px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 571.656px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 549.656px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 549.656px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 1710.11px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 1710.11px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 6338.96px; left: 14px; display: none;\"><\/div>\n<div class=\"simg-pop-btn\" style=\"top: 6338.96px; left: 14px; display: none;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Understanding the Critical Difference: Life Safety vs. Maintenance Safety In photovoltaic (PV) system design, few topics generate as much confusion as the relationship between rapid shutdown systems and DC disconnect switches. Even experienced electrical contractors often ask: &#8220;If I&#8217;ve already installed a DC disconnect switch next to the inverter, do I still need a rapid [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":20891,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-20890","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20890","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/comments?post=20890"}],"version-history":[{"count":1,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20890\/revisions"}],"predecessor-version":[{"id":20892,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20890\/revisions\/20892"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/20891"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=20890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=20890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=20890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}