{"id":19005,"date":"2025-07-28T14:00:28","date_gmt":"2025-07-28T06:00:28","guid":{"rendered":"https:\/\/viox.com\/?p=19005"},"modified":"2025-07-28T14:00:31","modified_gmt":"2025-07-28T06:00:31","slug":"connection-of-dc-isolators","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/connection-of-dc-isolators\/","title":{"rendered":"K\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC: H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 l\u1eafp \u0111\u1eb7t v\u00e0 \u0111\u1ea5u d\u00e2y an to\u00e0n"},"content":{"rendered":"<div class=\"product-intro\">\n<p><strong>D\u00f2ng cu\u1ed1i c\u00f9ng \u1edf ph\u00eda tr\u01b0\u1edbc<\/strong>: K\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC y\u00eau c\u1ea7u ph\u1ea3i x\u00e1c \u0111\u1ecbnh \u0111\u00fang \u0111\u1ea7u n\u1ed1i, \u0111\u1ea5u d\u00e2y \u0111\u00fang c\u1ef1c t\u00ednh v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n an to\u00e0n AS\/NZS 5033. C\u00e1p DC s\u1eed d\u1ee5ng d\u00e2y d\u1eabn m\u1ec1m lo\u1ea1i 5, ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ea5u n\u1ed1i \u0111\u00fang c\u00e1ch \u0111\u1ec3 tr\u00e1nh h\u1ecfng h\u00f3c, v\u00e0 c\u1ea7n c\u00e2n nh\u1eafc \u0111\u1ebfn vi\u1ec7c \u0111\u1ea5u n\u1ed1i d\u00e2y d\u1eabn DC t\u1ea1i c\u00e1c \u0111\u1ea7u n\u1ed1i c\u1ee7a b\u1ed9 c\u00e1ch ly (526.9.1).<\/p>\n<h2>B\u1ed9 c\u00e1ch ly DC l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao k\u1ebft n\u1ed1i l\u1ea1i quan tr\u1ecdng?<\/h2>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-12197\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/viox-DC-Isolator-Switches.webp\" alt=\"viox DC Isolator Switches\" width=\"800\" height=\"436\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/viox-DC-Isolator-Switches.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/viox-DC-Isolator-Switches-300x164.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/viox-DC-Isolator-Switches-768x419.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/viox-DC-Isolator-Switches-18x10.webp 18w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/viox-DC-Isolator-Switches-600x327.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/test.viox.com\/vi\/dc-isolator-switch\/\">B\u1ed9 c\u00e1ch ly DC VIOX<\/a><\/p>\n<p>B\u1ed9 c\u00e1ch ly DC (c\u00f2n g\u1ecdi l\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch DC) l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb an to\u00e0n cung c\u1ea5p kh\u1ea3 n\u0103ng c\u00e1ch ly \u0111i\u1ec7n ho\u00e0n to\u00e0n trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi. B\u1eb1ng c\u00e1ch c\u00e1ch ly ho\u00e0n to\u00e0n ngu\u1ed3n \u0111i\u1ec7n khi c\u1ea7n b\u1ea3o tr\u00ec ho\u1eb7c s\u1eeda ch\u1eefa, n\u00f3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng ai b\u1ecb \u0111i\u1ec7n gi\u1eadt n\u1ebfu ti\u1ebfp x\u00fac v\u1edbi b\u1ed9 ph\u1eadn \u0111ang mang \u0111i\u1ec7n c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<blockquote><p><strong>Dr. Tr\u01b0\u1edbc C\u1ea3nh B\u00e1o An To\u00e0n<\/strong>: B\u1ed9 c\u00e1ch ly DC l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ra nhi\u1ec1u v\u1ee5 ch\u00e1y v\u00e0 l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra s\u1ef1 c\u1ed1 cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi. Vi\u1ec7c k\u1ebft n\u1ed1i v\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi s\u1ef1 an to\u00e0n v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p><\/blockquote>\n<h3>S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh: K\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC so v\u1edbi AC<\/h3>\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"S\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng kinh ng\u1ea1c gi\u1eefa b\u1ed9 c\u00e1ch ly AC v\u00e0 DC!\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/YxHCDs03UEg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>B\u1ed9 c\u00e1ch ly DC g\u1eb7p ph\u1ea3i nh\u1eefng th\u00e1ch th\u1ee9c ri\u00eang so v\u1edbi b\u1ed9 c\u00e1ch ly AC. V\u1edbi h\u1ec7 th\u1ed1ng AC ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 50 Hz, \u0111i\u1ec7n \u00e1p s\u1ebd v\u01b0\u1ee3t qua \u0111i\u1ec3m 0 hai l\u1ea7n m\u1ed7i chu k\u1ef3, x\u1ea3y ra c\u1ee9 sau 10 mili gi\u00e2y, gi\u00fap ng\u0103n ch\u1eb7n h\u1ed3 quang \u0111i\u1ec7n. Tuy nhi\u00ean, \u0111i\u1ec7n \u00e1p DC kh\u00f4ng \u0111\u1ed5i v\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec3m giao nhau n\u00e0y, khi\u1ebfn vi\u1ec7c d\u1eadp h\u1ed3 quang tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n.<\/p>\n<h2>Ti\u00eau chu\u1ea9n v\u00e0 y\u00eau c\u1ea7u k\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC<\/h2>\n<h3>Ti\u00eau chu\u1ea9n ch\u00ednh v\u00e0 tu\u00e2n th\u1ee7<\/h3>\n<ul>\n<li><strong>AS\/NZS 5033:2021<\/strong>: Y\u00eau c\u1ea7u v\u1ec1 l\u1eafp \u0111\u1eb7t v\u00e0 an to\u00e0n cho m\u1ea3ng quang \u0111i\u1ec7n<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n AS 60947.3:2018<\/strong>: Phi\u00ean b\u1ea3n s\u1eeda \u0111\u1ed5i c\u1ee7a IEC 60947-3 v\u1edbi c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a \u00dac<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n IEC 60947-3<\/strong>: Ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf cho thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft v\u00e0 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n \u00e1p th\u1ea5p<\/li>\n<\/ul>\n<p>Thi\u1ebft b\u1ecb ng\u1eaft k\u1ebft n\u1ed1i hi\u1ec7n ph\u1ea3i tu\u00e2n th\u1ee7 AS 60947.3:2018, phi\u00ean b\u1ea3n s\u1eeda \u0111\u1ed5i c\u1ee7a ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf IEC 60947.3 v\u1edbi c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 d\u00e0nh cho \u00dac.<\/p>\n<h3>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt k\u1ebft n\u1ed1i thi\u1ebft y\u1ebfu<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt<\/th>\n<th>Y\u00eau c\u1ea7u<\/th>\n<th>Chu\u1ea9n T\u00e0i Li\u1ec7u Tham Kh\u1ea3o<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>L\u1edbp nh\u1ea1c tr\u01b0\u1edfng<\/strong><\/td>\n<td>L\u1edbp 5 (linh ho\u1ea1t)<\/td>\n<td>Ti\u00eau chu\u1ea9n AS\/NZS 5033<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u00e1nh d\u1ea5u \u0111\u1ea7u cu\u1ed1i<\/strong><\/td>\n<td>Ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c l\u1edbp nh\u1ea1c tr\u01b0\u1edfng<\/td>\n<td>526.2 Ghi ch\u00fa 2<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/test.viox.com\/vi\/ip67-vs-ip68\/\"><strong>X\u1ebfp h\u1ea1ng IP<\/strong><\/a><\/td>\n<td>T\u1ed1i thi\u1ec3u IP56NW ngo\u00e0i tr\u1eddi<\/td>\n<td>AS 60947.3<\/td>\n<\/tr>\n<tr>\n<td><strong>X\u1ebfp h\u1ea1ng nhi\u1ec7t \u0111\u1ed9<\/strong><\/td>\n<td>40\u00b0C (b\u00f3ng r\u00e2m) \/ 60\u00b0C (ti\u1ebfp x\u00fac)<\/td>\n<td>AS\/NZS 5033:2021<\/td>\n<\/tr>\n<tr>\n<td><strong>Th\u1ec3 lo\u1ea1i s\u1eed d\u1ee5ng<\/strong><\/td>\n<td>DC-PV2 cho h\u1ec7 th\u1ed1ng PV<\/td>\n<td>AS 60947.3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quy tr\u00ecnh k\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC t\u1eebng b\u01b0\u1edbc<\/h2>\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"B\u1ed9 c\u00e1ch ly DC - \u0110\u1ea5u d\u00e2y c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i h\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/wO0p-2DwLzc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<h3><strong>B\u01b0\u1edbc 1: An to\u00e0n v\u00e0 l\u1eadp k\u1ebf ho\u1ea1ch tr\u01b0\u1edbc khi k\u1ebft n\u1ed1i<\/strong><\/h3>\n<blockquote><p><strong>\ud83d\udd27 M\u1eb9o c\u1ee7a chuy\u00ean gia<\/strong>: Lu\u00f4n \u0111\u1ea3m b\u1ea3o ngu\u1ed3n \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u00e1ch ly ho\u00e0n to\u00e0n tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u b\u1ea5t k\u1ef3 c\u00f4ng vi\u1ec7c k\u1ebft n\u1ed1i n\u00e0o. S\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 v\u1ea1n n\u0103ng \u0111\u1ec3 ki\u1ec3m tra \u0111i\u1ec7n \u00e1p b\u1eb1ng kh\u00f4ng \u1edf t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u n\u1ed1i.<\/p><\/blockquote>\n<ol>\n<li>T\u1eaft t\u1ea5t c\u1ea3 c\u00e1c ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ea7u ngu\u1ed3n<\/li>\n<li>Quy tr\u00ecnh kh\u00f3a\/g\u1eafn th\u1ebb (LOTO)<\/li>\n<li>X\u00e1c minh s\u1ef1 c\u00f4 l\u1eadp b\u1eb1ng thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m ph\u00f9 h\u1ee3p<\/li>\n<li>X\u00e1c \u0111\u1ecbnh d\u00e2y d\u1eabn d\u01b0\u01a1ng v\u00e0 \u00e2m b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng d\u1ea5u hi\u1ec7u c\u00e1p th\u00edch h\u1ee3p<\/li>\n<\/ol>\n<h3>B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh v\u00e0 chu\u1ea9n b\u1ecb thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i<\/h3>\n<p>C\u00e1p DC th\u01b0\u1eddng s\u1eed d\u1ee5ng d\u00e2y d\u1eabn lo\u1ea1i 5 (d\u1ebbo). Tr\u01b0\u1eddng h\u1ee3p c\u00e1c \u0111\u1ea7u n\u1ed1i thi\u1ebft b\u1ecb kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u, ch\u00fang ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i d\u00e2y d\u1eabn m\u00e0 kh\u00f4ng c\u1ea7n s\u1eeda \u0111\u1ed5i.<\/p>\n<h4>Y\u00eau c\u1ea7u chu\u1ea9n b\u1ecb \u0111\u1ea7u cu\u1ed1i:<\/h4>\n<ul>\n<li>B\u00f3c l\u1edbp c\u00e1ch \u0111i\u1ec7n c\u1ee7a c\u00e1p theo th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/li>\n<li>Khi c\u1ea7n x\u1eed l\u00fd c\u00e1c d\u00e2y d\u1eabn \u1edf c\u00e1c \u0111i\u1ec3m k\u1ebft th\u00fac, c\u1ea7n tham kh\u1ea3o d\u1eef li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t, trong \u0111\u00f3 c\u00f3 th\u1ec3 n\u00eau r\u00f5 r\u1eb1ng d\u00e2y d\u1eabn d\u1ea1ng s\u1ee3i m\u1ea3nh c\u1ea7n c\u00f3 \u1ed1ng b\u1ecdc ho\u1eb7c v\u00f2ng \u0111\u1ec7m.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o b\u1ec1 m\u1eb7t \u0111\u1ea7u cu\u1ed1i s\u1ea1ch s\u1ebd, kh\u00f4ng b\u1ecb \u0103n m\u00f2n<\/li>\n<li>\u00c1p d\u1ee5ng h\u1ee3p ch\u1ea5t ch\u1ed1ng oxy h\u00f3a n\u1ebfu \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 3: Hi\u1ec3u v\u1ec1 c\u1ea5u h\u00ecnh k\u1ebft n\u1ed1i<\/h3>\n<p>C\u00e1c lo\u1ea1i b\u1ed9 c\u00e1ch ly DC kh\u00e1c nhau y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh d\u00e2y d\u1eabn c\u1ee5 th\u1ec3 d\u1ef1a tr\u00ean y\u00eau c\u1ea7u v\u1ec1 \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n:<\/p>\n<h4>T\u00f9y ch\u1ecdn c\u1ea5u h\u00ecnh ti\u00eau chu\u1ea9n<\/h4>\n<table>\n<thead>\n<tr>\n<th>C\u1ea5u h\u00ecnh<\/th>\n<th>\u0110i\u1ec7n \u0110\u00e1nh Gi\u00e1<\/th>\n<th>C\u00f4ng su\u1ea5t hi\u1ec7n t\u1ea1i<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>D\u00f2ng 2 c\u1ef1c<\/strong><\/td>\n<td>L\u00ean \u0111\u1ebfn 600V<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n th\u1ea5p h\u01a1n<\/td>\n<td>H\u1ec7 th\u1ed1ng d\u00e2y \u0111\u01a1n<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u00f2ng 4 c\u1ef1c<\/strong><\/td>\n<td>L\u00ean \u0111\u1ebfn 1000V<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n trung b\u00ecnh<\/td>\n<td>M\u1ea3ng \u0111i\u1ec7n \u00e1p cao<\/td>\n<\/tr>\n<tr>\n<td><strong>N\u1ed1i ti\u1ebfp 2 c\u1ef1c + Song song 2 c\u1ef1c<\/strong><\/td>\n<td>Bi\u1ebfn<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n cao h\u01a1n<\/td>\n<td>H\u1ec7 th\u1ed1ng nhi\u1ec1u chu\u1ed7i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>S\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n \u0111\u00e3 x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc \u0111\u00f3, c\u00f3 th\u1ec3 ch\u1ecdn c\u1ea5u h\u00ecnh d\u00e2y \u0111i\u1ec7n ph\u00f9 h\u1ee3p t\u1eeb B\u1ea3ng 1. \u0110\u1ec3 chuy\u1ec3n m\u1ea1ch 15,6 A \u1edf 936 V, b\u1ed9 ng\u1eaft k\u1ebft n\u1ed1i ph\u1ea3i \u0111\u01b0\u1ee3c n\u1ed1i theo c\u1ea5u h\u00ecnh n\u1ed1i ti\u1ebfp 4 c\u1ef1c ho\u1eb7c c\u1ea5u h\u00ecnh n\u1ed1i ti\u1ebfp 2 c\u1ef1c + song song 2 c\u1ef1c.<\/p>\n<h3>B\u01b0\u1edbc 4: Qu\u00e1 tr\u00ecnh k\u1ebft n\u1ed1i v\u1eadt l\u00fd<\/h3>\n<p><strong>\u0110\u1ed1i v\u1edbi B\u1ed9 c\u00e1ch ly DC 2 c\u1ef1c ti\u00eau chu\u1ea9n:<\/strong><\/p>\n<ol>\n<li>X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra (th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u L1\/L2 cho \u0111\u1ea7u v\u00e0o, T1\/T2 cho \u0111\u1ea7u ra)<\/li>\n<li>K\u1ebft n\u1ed1i d\u00e2y d\u1eabn d\u01b0\u01a1ng v\u1edbi c\u1ef1c d\u01b0\u01a1ng \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/li>\n<li>K\u1ebft n\u1ed1i d\u00e2y d\u1eabn \u00e2m v\u1edbi c\u1ef1c \u00e2m \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/li>\n<li>Si\u1ebft ch\u1eb7t c\u00e1c k\u1ebft n\u1ed1i theo th\u00f4ng s\u1ed1 m\u00f4-men xo\u1eafn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/li>\n<li>X\u00e1c minh c\u1ef1c tr\u01b0\u1edbc khi n\u0103ng l\u01b0\u1ee3ng<\/li>\n<\/ol>\n<blockquote><p><strong>\u26a0\ufe0f C\u1ea3nh b\u00e1o quan tr\u1ecdng<\/strong>: C\u00e1c k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo \u0111\u01b0\u1eddng ch\u00e9o, do \u0111\u00f3 vi\u1ec7c \u0111\u1ea5u d\u00e2y th\u1eb3ng s\u1ebd d\u1eabn \u0111\u1ebfn \u0111\u1ea3o c\u1ef1c. Lu\u00f4n ki\u1ec3m tra \u0111\u01b0\u1eddng d\u1eabn k\u1ebft n\u1ed1i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng th\u1eed nghi\u1ec7m t\u00ednh li\u00ean t\u1ee5c.<\/p><\/blockquote>\n<h3>B\u01b0\u1edbc 5: X\u00e1c minh v\u00e0 ki\u1ec3m tra k\u1ebft n\u1ed1i<\/h3>\n<p><strong>C\u00e1c b\u01b0\u1edbc x\u00e1c minh c\u1ea7n thi\u1ebft:<\/strong><\/p>\n<ol>\n<li>Ki\u1ec3m tra tr\u1ef1c quan t\u1ea5t c\u1ea3 c\u00e1c k\u1ebft n\u1ed1i<\/li>\n<li>Ki\u1ec3m tra t\u00ednh li\u00ean t\u1ee5c v\u1edbi b\u1ed9 c\u00e1ch ly \u1edf v\u1ecb tr\u00ed B\u1eacT<\/li>\n<li>Ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n v\u1edbi b\u1ed9 c\u00e1ch ly \u1edf v\u1ecb tr\u00ed T\u1eaeT<\/li>\n<li>X\u00e1c minh c\u1ef1c t\u00ednh b\u1eb1ng thi\u1ebft b\u1ecb ki\u1ec3m tra ph\u00f9 h\u1ee3p<\/li>\n<li>Ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u01a1 ch\u1ebf chuy\u1ec3n m\u1ea1ch<\/li>\n<\/ol>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-15032\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/Flame-retardant-shell-DC-isolator-switch.webp\" alt=\"Flame-retardant shell DC isolator switch\" width=\"800\" height=\"600\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/Flame-retardant-shell-DC-isolator-switch.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/Flame-retardant-shell-DC-isolator-switch-300x225.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/Flame-retardant-shell-DC-isolator-switch-768x576.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/Flame-retardant-shell-DC-isolator-switch-16x12.webp 16w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/04\/Flame-retardant-shell-DC-isolator-switch-600x450.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>\u0110\u1ecbnh c\u1ee1 d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p cho k\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC<\/h2>\n<h3>T\u00ednh to\u00e1n nhu c\u1ea7u d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a<\/h3>\n<p>Khi l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb cho m\u1ea3ng PV, bao g\u1ed3m c\u1ea3 b\u1ed9 c\u00e1ch ly DC, c\u1ea7n s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch c\u1ef1c \u0111\u1ea1i (ISC MAX) (712.512.1.2). C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c 2 \u0111\u1ec3 t\u00ednh gi\u00e1 tr\u1ecb n\u00e0y: ISC MAX = S\u1ed1 chu\u1ed7i x ISC STC x 1,25<\/p>\n<p><strong>N\u01a1i:<\/strong><br \/>\nISC MAX = D\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch t\u1ed1i \u0111a c\u1ee7a m\u1ea3ng<br \/>\nS\u1ed1 chu\u1ed7i = T\u1ed5ng s\u1ed1 chu\u1ed7i song song<br \/>\nH\u1ed9i th\u1ea3o CHUY\u00caN = ch\u1eadp m\u1ea1ch hi\u1ec7n theo ti\u00eau chu\u1ea9n ki\u1ec3m tra \u0111i\u1ec1u ki\u1ec7n<br \/>\n1,25 = H\u1ec7 s\u1ed1 an to\u00e0n cho \u0111i\u1ec1u ki\u1ec7n b\u1ee9c x\u1ea1 cao h\u01a1n<\/p>\n<h3>C\u00e2n nh\u1eafc v\u1ec1 nhi\u1ec7t \u0111\u1ed9<\/h3>\n<p>\u0110\u1ed1i v\u1edbi b\u1ed9 c\u00e1ch ly \u0111\u01b0\u1ee3c \u0111\u1eb7t trong nh\u00e0 ho\u1eb7c ngo\u00e0i tr\u1eddi \u1edf n\u01a1i r\u00e2m m\u00e1t ho\u00e0n to\u00e0n, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng quy \u0111\u1ecbnh \u00e1p d\u1ee5ng l\u00e0 40 \u0111\u1ed9 C. \u0110\u1ed1i v\u1edbi b\u1ed9 c\u00e1ch ly \u0111\u01b0\u1ee3c \u0111\u1eb7t ngo\u00e0i tr\u1eddi v\u00e0 ti\u1ebfp x\u00fac v\u1edbi \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng \u00e1p d\u1ee5ng l\u00e0 60 \u0111\u1ed9 C.<\/p>\n<h2>C\u00e1c lo\u1ea1i b\u1ed9 c\u00e1ch ly DC v\u00e0 ph\u01b0\u01a1ng ph\u00e1p k\u1ebft n\u1ed1i<\/h2>\n<h3><strong>C\u00e1c lo\u1ea1i c\u00f4ng t\u1eafc ng\u1eaft k\u1ebft n\u1ed1i<\/strong><\/h3>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p k\u1ebft n\u1ed1i<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<th>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>B\u1ed9 c\u00e1ch ly quay<\/strong><\/td>\n<td>C\u1ea5u h\u00ecnh \u0111\u1ea7u cu\u1ed1i ch\u00e9o<\/td>\n<td>H\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi PV<\/td>\n<td>Ti\u1ebfp \u0111i\u1ec3m c\u1ea1nh dao, x\u1ebfp h\u1ea1ng IP67<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u00f4ng t\u1eafc ng\u1eaft t\u1ea3i<\/strong><\/td>\n<td>Ti\u00eau chu\u1ea9n thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i kh\u1ed1i<\/td>\n<td>H\u1ec7 th\u1ed1ng DC c\u00f4ng nghi\u1ec7p<\/td>\n<td>Kh\u1ea3 n\u0103ng ph\u00e1 v\u1ee1 cao<\/td>\n<\/tr>\n<tr>\n<td><strong>B\u1ed9 c\u00e1ch ly t\u00edch h\u1ee3p<\/strong><\/td>\n<td>L\u1eafp \u0111\u1eb7t bi\u1ebfn t\u1ea7n b\u00ean trong<\/td>\n<td>N\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi d\u00e2n d\u1ee5ng<\/td>\n<td>Thi\u1ebft k\u1ebf ti\u1ebft ki\u1ec7m kh\u00f4ng gian<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><strong>B\u1ed9 c\u00e1ch ly DC th\u1ef1c s\u1ef1 so v\u1edbi b\u1ed9 c\u00e1ch ly AC gi\u1ea3m \u0111\u1ecbnh m\u1ee9c<\/strong><\/h3>\n<blockquote><p><strong>\ud83d\udd27 M\u1eb9o c\u1ee7a chuy\u00ean gia<\/strong>: IMO SI l\u00e0 c\u00f4ng t\u1eafc True DC \u2013 kh\u00f4ng ph\u1ea3i phi\u00ean b\u1ea3n AC \u0111\u01b0\u1ee3c h\u1ea1 c\u00f4ng su\u1ea5t ho\u1eb7c \u0111\u1ea5u l\u1ea1i d\u00e2y \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng DC. Lu\u00f4n s\u1eed d\u1ee5ng b\u1ed9 c\u00e1ch ly True DC \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 an to\u00e0n \u0111\u00e1ng tin c\u1eady.<\/p><\/blockquote>\n<h4>T\u00ednh n\u0103ng c\u1ee7a b\u1ed9 c\u00e1ch ly DC th\u1ef1c s\u1ef1:<\/h4>\n<ul>\n<li>Bu\u1ed3ng d\u1eadp t\u1eaft h\u1ed3 quang chuy\u00ean d\u1ee5ng<\/li>\n<li>V\u1eadt li\u1ec7u ti\u1ebfp x\u00fac \u0111\u1ecbnh m\u1ee9c DC<\/li>\n<li>Kh\u1ea3 n\u0103ng ch\u1ecbu \u0111i\u1ec7n \u00e1p cao h\u01a1n<\/li>\n<li>Thi\u1ebft k\u1ebf ch\u1ecbu nhi\u1ec7t<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-12196\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/DC-Isolator-Applications.webp\" alt=\"DC Isolator Applications\" width=\"800\" height=\"446\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/DC-Isolator-Applications.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/DC-Isolator-Applications-300x167.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/DC-Isolator-Applications-768x428.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/DC-Isolator-Applications-18x10.webp 18w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/DC-Isolator-Applications-600x335.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t v\u00e0 y\u00eau c\u1ea7u l\u1eafp \u0111\u1eb7t<\/h2>\n<h3><strong>Y\u00eau c\u1ea7u v\u1ec1 b\u1ec1 m\u1eb7t l\u1eafp \u0111\u1eb7t<\/strong><\/h3>\n<p>Energy Safe khuy\u1ebfn ngh\u1ecb l\u1eafp \u0111\u1eb7t b\u1ed9 c\u00e1ch ly DC tr\u00ean b\u1ec1 m\u1eb7t kh\u00f4ng d\u1ec5 ch\u00e1y. <a href=\"https:\/\/www.standards.govt.nz\/shop\/asnzs-50332021\" rel=\"nofollow noopener\" target=\"_blank\">AS\/NZS 5033:2021<\/a> \u0110i\u1ec1u 4.5.4.1 y\u00eau c\u1ea7u ph\u1ea3i c\u00f3 r\u00e0o c\u1ea3n kh\u00f4ng ch\u00e1y gi\u1eefa b\u1ed9 c\u00e1ch ly DC v\u00e0 b\u1ec1 m\u1eb7t d\u1ec5 ch\u00e1y.<\/p>\n<h4>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a r\u00e0o c\u1ea3n kh\u00f4ng ch\u00e1y:<\/h4>\n<ul>\n<li>Ph\u1ea3i m\u1edf r\u1ed9ng 200mm qua c\u00e1c c\u1ea1nh c\u00e1ch ly<\/li>\n<li>Ch\u1ea5t tr\u00e1m ch\u1ed1ng ch\u00e1y cho c\u00e1c l\u1ed7 xuy\u00ean th\u1ee7ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh &gt;5mm<\/li>\n<li>V\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n AS 1530.1<\/li>\n<\/ul>\n<h3><strong>X\u1ebfp h\u1ea1ng IP v\u00e0 B\u1ea3o v\u1ec7 th\u1eddi ti\u1ebft<\/strong><\/h3>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 x\u00e2m nh\u1eadp c\u1ee7a n\u01b0\u1edbc v\u00e0 h\u1ecfng s\u1edbm c\u1ee7a b\u1ed9 c\u00e1ch ly DC, c\u00e1c y\u00eau c\u1ea7u an to\u00e0n l\u1eafp \u0111\u1eb7t t\u1ed1i thi\u1ec3u ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng theo AS\/NZS 5033:2021 Cl. 4.4.7 bao g\u1ed3m: Gi\u1ea3m \u1ee9ng su\u1ea5t cho c\u00e1c d\u00e2y d\u1eabn (khi kh\u00f4ng s\u1eed d\u1ee5ng \u1ed1ng d\u1eabn \u0111\u1ec3 \u0111i v\u00e0o v\u1ecf b\u1ecdc) Duy tr\u00ec x\u1ebfp h\u1ea1ng IP66 c\u1ee7a b\u1ed9 c\u00e1ch ly DC, ch\u1ec9 s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec3m v\u00e0o c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/p>\n<h2>C\u00e1c v\u1ea5n \u0111\u1ec1 k\u1ebft n\u1ed1i ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/h2>\n<h3><strong>C\u00e1c v\u1ea5n \u0111\u1ec1 k\u1ebft n\u1ed1i th\u01b0\u1eddng g\u1eb7p<\/strong><\/h3>\n<table>\n<thead>\n<tr>\n<th>V\u1ea5n \u0111\u1ec1<\/th>\n<th>G\u00e2y ra<\/th>\n<th>Gi\u1ea3i ph\u00e1p<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u0110\u1ea3o ng\u01b0\u1ee3c c\u1ef1c t\u00ednh<\/strong><\/td>\n<td>Nh\u1eadn d\u1ea1ng thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i kh\u00f4ng ch\u00ednh x\u00e1c<\/td>\n<td>S\u1eed d\u1ee5ng th\u1eed nghi\u1ec7m t\u00ednh li\u00ean t\u1ee5c \u0111\u1ec3 x\u00e1c minh \u0111\u01b0\u1eddng d\u1eabn k\u1ebft n\u1ed1i<\/td>\n<\/tr>\n<tr>\n<td><strong>Thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i qu\u00e1 nhi\u1ec7t<\/strong><\/td>\n<td>M\u1ea5t k\u1ebft n\u1ed1i<\/td>\n<td>Si\u1ebft ch\u1eb7t \u0111\u1ebfn gi\u00e1 tr\u1ecb m\u00f4-men xo\u1eafn \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh<\/td>\n<\/tr>\n<tr>\n<td><strong>H\u01b0 h\u1ecfng h\u1ed3 quang<\/strong><\/td>\n<td>Chuy\u1ec3n m\u1ea1ch kh\u00f4ng \u0111\u00fang khi t\u1ea3i<\/td>\n<td>Th\u1ef1c hi\u1ec7n theo tr\u00ecnh t\u1ef1 chuy\u1ec3n m\u1ea1ch th\u00edch h\u1ee3p<\/td>\n<\/tr>\n<tr>\n<td><strong>N\u01b0\u1edbc x\u00e2m nh\u1eadp<\/strong><\/td>\n<td>B\u1ecbt k\u00edn tuy\u1ebfn c\u00e1p k\u00e9m<\/td>\n<td>S\u1eed d\u1ee5ng c\u00e1c tuy\u1ebfn \u0111\u01b0\u1ee3c x\u1ebfp h\u1ea1ng IP v\u00e0 c\u00e1c \u1ed1ng l\u00f3t nhi\u1ec1u l\u1ed7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><strong>Chi\u1ebfn l\u01b0\u1ee3c ph\u00f2ng ng\u1eeba<\/strong><\/h3>\n<blockquote><p><strong>\ud83d\udd27 M\u1eb9o c\u1ee7a chuy\u00ean gia<\/strong>: \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i tu\u00e2n theo h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u1ec1 c\u1ea5u h\u00ecnh b\u1ed9 ng\u1eaft k\u1ebft n\u1ed1i DC \u0111\u1ec3 tr\u00e1nh h\u1ecfng thi\u1ebft b\u1ecb.<\/p><\/blockquote>\n<h4>Th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t:<\/h4>\n<ul>\n<li>Lu\u00f4n s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec3m v\u00e0o c\u00e1p \u0111\u01b0\u1ee3c nh\u00e0 s\u1ea3n xu\u1ea5t ch\u1ea5p thu\u1eadn<\/li>\n<li>\u00c1p d\u1ee5ng th\u00f4ng s\u1ed1 m\u00f4-men xo\u1eafn th\u00edch h\u1ee3p cho t\u1ea5t c\u1ea3 c\u00e1c k\u1ebft n\u1ed1i<\/li>\n<li>Ki\u1ec3m tra c\u1ef1c t\u00ednh tr\u01b0\u1edbc khi c\u1ea5p \u0111i\u1ec7n cho m\u1ea1ch<\/li>\n<li>Th\u1ef1c hi\u1ec7n l\u1ecbch tr\u00ecnh ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean<\/li>\n<\/ul>\n<h2>Ti\u00eau chu\u1ea9n an to\u00e0n v\u00e0 y\u00eau c\u1ea7u ch\u1ee9ng nh\u1eadn<\/h2>\n<h3><strong>Y\u00eau c\u1ea7u quy \u0111\u1ecbnh c\u1ee7a \u00dac<\/strong><\/h3>\n<p>B\u1ed9 c\u00e1ch ly DC \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n c\u1ea5p \u0111\u1ed9 3 v\u00e0 ph\u1ea3i \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn v\u00e0 \u0111\u0103ng k\u00fd theo quy \u0111\u1ecbnh qu\u1ed1c gia <a href=\"https:\/\/www.eess.gov.au\/\" rel=\"nofollow noopener\" target=\"_blank\">H\u1ec7 th\u1ed1ng an to\u00e0n thi\u1ebft b\u1ecb \u0111i\u1ec7n (EES)<\/a>.<\/p>\n<h4>C\u00e1c \u0111i\u1ec3m tu\u00e2n th\u1ee7 ch\u00ednh:<\/h4>\n<ul>\n<li>\u0110\u0103ng k\u00fd EESS cho t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 c\u00e1ch ly DC<\/li>\n<li>Tu\u00e2n th\u1ee7 AS 60947.3:2018<\/li>\n<li>X\u00e1c minh x\u1ebfp h\u1ea1ng IP56NW<\/li>\n<li>Ch\u1ee9ng nh\u1eadn \u0111\u00e1nh gi\u00e1 nhi\u1ec7t \u1edf 40\u00b0C<\/li>\n<\/ul>\n<h3><strong>T\u00e0i li\u1ec7u c\u00e0i \u0111\u1eb7t<\/strong><\/h3>\n<p>T\u00e0i li\u1ec7u l\u00e0 y\u00eau c\u1ea7u quan tr\u1ecdng \u0111\u01b0\u1ee3c n\u00eau trong c\u00e1c ti\u00eau chu\u1ea9n l\u1eafp \u0111\u1eb7t, AS\/NZS 5033 &amp; AS\/NZS 4777.1 ph\u1ea3i tu\u00e2n th\u1ee7 khi l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng PV.<\/p>\n<h2>Ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn b\u1ed9 c\u00e1ch ly DC<\/h2>\n<h3><strong>Ch\u1ecdn b\u1ed9 c\u00e1ch ly ph\u00f9 h\u1ee3p<\/strong><\/h3>\n<p>Khi l\u1ef1a ch\u1ecdn b\u1ed9 c\u00e1ch ly DC cho h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n, h\u00e3y c\u00e2n nh\u1eafc nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng sau:<\/p>\n<h4>Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec7n:<\/h4>\n<ul>\n<li>\u0110i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng t\u1ed1i \u0111a (th\u01b0\u1eddng l\u00e0 600V d\u00e2n d\u1ee5ng, 1000V th\u01b0\u01a1ng m\u1ea1i)<\/li>\n<li>Kh\u1ea3 n\u0103ng ch\u1ecbu d\u00f2ng ng\u1eafn m\u1ea1ch t\u1ed1i \u0111a<\/li>\n<li>Ph\u00e1 v\u1ee1 v\u00e0 t\u1ea1o ra x\u1ebfp h\u1ea1ng hi\u1ec7n t\u1ea1i<\/li>\n<li>H\u1ea1ng m\u1ee5c s\u1eed d\u1ee5ng (DC-PV2 cho h\u1ec7 th\u1ed1ng PV)<\/li>\n<\/ul>\n<h4>C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng:<\/h4>\n<ul>\n<li>V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t (trong nh\u00e0\/ngo\u00e0i tr\u1eddi)<\/li>\n<li>Ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 (b\u00f3ng r\u00e2m\/\u00e1nh n\u1eafng tr\u1ef1c ti\u1ebfp)<\/li>\n<li>Y\u00eau c\u1ea7u v\u1ec1 x\u1ebfp h\u1ea1ng IP<\/li>\n<li>Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a b\u1ec1 m\u1eb7t l\u1eafp \u0111\u1eb7t<\/li>\n<\/ul>\n<h3><strong>C\u00e2n nh\u1eafc v\u1ec1 chi ph\u00ed<\/strong><\/h3>\n<p>Gi\u00e1 c\u1ee7a b\u1ed9 c\u00e1ch ly DC th\u01b0\u1eddng th\u1ea5p h\u01a1n so v\u1edbi m\u00e1y c\u1eaft DC. Tuy nhi\u00ean, chi ph\u00ed ch\u00ednh x\u00e1c c\u1ee7a m\u1ed9t c\u00f4ng t\u1eafc ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc v\u00e0 c\u00e1c t\u00ednh n\u0103ng \u0111i k\u00e8m. C\u00e1c m\u1eabu c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u t\u1eeb kho\u1ea3ng $20, trong khi c\u00e1c m\u1eabu l\u1edbn h\u01a1n v\u00e0 cao c\u1ea5p h\u01a1n c\u00f3 th\u1ec3 c\u00f3 gi\u00e1 l\u00ean \u0111\u1ebfn $200.<\/p>\n<h2>Nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 k\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC<\/h2>\n<h3><strong>\u0110i\u1ec3m kh\u00e1c bi\u1ec7t gi\u1eefa k\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC v\u00e0 k\u1ebft n\u1ed1i AC l\u00e0 g\u00ec?<\/strong><\/h3>\n<p>\u0110i\u1ec7n \u00e1p DC kh\u00f4ng \u0111\u1ed5i v\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec3m giao nhau b\u1eb1ng kh\u00f4ng, khi\u1ebfn vi\u1ec7c d\u1eadp h\u1ed3 quang tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac chuy\u00ean d\u1ee5ng v\u00e0 bu\u1ed3ng d\u1eadp h\u1ed3 quang trong b\u1ed9 c\u00e1ch ly DC, v\u1ed1n kh\u00f4ng c\u1ea7n thi\u1ebft trong c\u00e1c \u1ee9ng d\u1ee5ng AC.<\/p>\n<h3><strong>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ed9 c\u00e1ch ly AC cho \u1ee9ng d\u1ee5ng DC kh\u00f4ng?<\/strong><\/h3>\n<p>Kh\u00f4ng. C\u00f4ng t\u1eafc c\u00e1ch ly DC \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho h\u1ec7 th\u1ed1ng \u0111i\u1ec7n DC. \u0110\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec7n AC, b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng c\u00f4ng t\u1eafc c\u00e1ch ly \u0111\u1ecbnh m\u1ee9c AC. S\u1eed d\u1ee5ng sai lo\u1ea1i c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c nguy hi\u1ec3m v\u00e0 nguy c\u01a1 h\u1ecfa ho\u1ea1n.<\/p>\n<h3><strong>N\u00ean s\u1eed d\u1ee5ng lo\u1ea1i c\u00e1p n\u00e0o v\u1edbi b\u1ed9 c\u00e1ch ly DC?<\/strong><\/h3>\n<p>C\u00e1p DC th\u01b0\u1eddng s\u1eed d\u1ee5ng d\u00e2y d\u1eabn lo\u1ea1i 5 (d\u1ebbo). Lo\u1ea1i d\u00e2y n\u00e0y mang l\u1ea1i \u0111\u1ed9 linh ho\u1ea1t v\u00e0 \u0111\u1ed9 tin c\u1eady cao h\u01a1n trong l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng PV so v\u1edbi d\u00e2y d\u1eabn \u0111\u1eb7c.<\/p>\n<h3><strong>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u00e1c minh \u0111\u00fang c\u1ef1c sau khi k\u1ebft n\u1ed1i?<\/strong><\/h3>\n<p>Ki\u1ec3m tra t\u00ednh li\u00ean t\u1ee5c b\u1eb1ng c\u00e1ch b\u1eadt b\u1ed9 c\u00e1ch ly v\u00e0 \u0111\u1ea3m b\u1ea3o \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i kh\u1edbp v\u1edbi c\u1ef1c t\u00ednh m\u1ea1ch d\u1ef1 \u0111\u1ecbnh. C\u00e1c k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo \u0111\u01b0\u1eddng ch\u00e9o, do \u0111\u00f3, \u0111\u1ea5u d\u00e2y th\u1eb3ng s\u1ebd d\u1eabn \u0111\u1ebfn c\u1ef1c t\u00ednh b\u1ecb \u0111\u1ea3o ng\u01b0\u1ee3c.<\/p>\n<h3><strong>C\u1ea5p IP n\u00e0o l\u00e0 b\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi b\u1ed9 c\u00e1ch ly DC ngo\u00e0i tr\u1eddi?<\/strong><\/h3>\n<p>X\u1ebfp h\u1ea1ng b\u1ea3o v\u1ec7 ch\u1ed1ng x\u00e2m nh\u1eadp (IP) t\u1ed1i thi\u1ec3u l\u00e0 IP56NW \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u \u0111\u1ed1i v\u1edbi b\u1ed9 c\u00e1ch ly ngo\u00e0i tr\u1eddi trong t\u1eebng h\u1ed9p ri\u00eang l\u1ebb.<\/p>\n<h3><strong>B\u1ed9 c\u00e1ch ly DC c\u00f3 y\u00eau c\u1ea7u l\u01b0u \u00fd \u0111\u1eb7c bi\u1ec7t khi l\u1eafp \u0111\u1eb7t kh\u00f4ng?<\/strong><\/h3>\n<p>C\u00f3. Energy Safe khuy\u1ebfn ngh\u1ecb l\u1eafp \u0111\u1eb7t b\u1ed9 c\u00e1ch ly DC tr\u00ean b\u1ec1 m\u1eb7t kh\u00f4ng ch\u00e1y v\u00e0 ph\u1ea3i c\u00f3 bi\u1ec7n ph\u00e1p gi\u1ea3m \u1ee9ng su\u1ea5t v\u00e0 b\u1ea3o v\u1ec7 kh\u1ecfi th\u1eddi ti\u1ebft ph\u00f9 h\u1ee3p theo ti\u00eau chu\u1ea9n AS\/NZS 5033:2021.<\/p>\n<h2>Khuy\u1ebfn ngh\u1ecb l\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec chuy\u00ean nghi\u1ec7p<\/h2>\n<h3><strong>Khi n\u00e0o n\u00ean thu\u00ea th\u1ee3 \u0111i\u1ec7n chuy\u00ean nghi\u1ec7p<\/strong><\/h3>\n<p>M\u1eb7c d\u00f9 c\u00e1c k\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC c\u01a1 b\u1ea3n c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng vi\u1ec7c l\u1eafp \u0111\u1eb7t chuy\u00ean nghi\u1ec7p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho:<\/p>\n<ul>\n<li>H\u1ec7 th\u1ed1ng tr\u00ean 48V DC<\/li>\n<li>C\u01a1 s\u1edf th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p<\/li>\n<li>C\u1ea5u h\u00ecnh nhi\u1ec1u chu\u1ed7i ph\u1ee9c t\u1ea1p<\/li>\n<li>Y\u00eau c\u1ea7u ch\u1ee9ng nh\u1eadn tu\u00e2n th\u1ee7<\/li>\n<\/ul>\n<h3><strong>L\u1ecbch Tr\u00ecnh B\u1ea3o Tr\u00ec<\/strong><\/h3>\n<p><strong>Ki\u1ec3m tra h\u00e0ng n\u0103m n\u00ean bao g\u1ed3m:<\/strong><\/p>\n<ul>\n<li>Ki\u1ec3m tra tr\u1ef1c quan c\u00e1c k\u1ebft n\u1ed1i \u0111\u1ec3 t\u00ecm d\u1ea5u hi\u1ec7u qu\u00e1 nhi\u1ec7t<\/li>\n<li>X\u00e1c minh t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a x\u1ebfp h\u1ea1ng IP<\/li>\n<li>Ki\u1ec3m tra ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u01a1 ch\u1ebf chuy\u1ec3n m\u1ea1ch<\/li>\n<li>Ki\u1ec3m tra m\u00f4-men xo\u1eafn c\u1ee7a c\u00e1c k\u1ebft n\u1ed1i \u0111\u1ea7u cu\u1ed1i<\/li>\n<li>C\u1eadp nh\u1eadt t\u00e0i li\u1ec7u theo y\u00eau c\u1ea7u<\/li>\n<\/ul>\n<p><strong>\u0110i\u1ec3m ch\u00ednh<\/strong>: Vi\u1ec7c k\u1ebft n\u1ed1i b\u1ed9 c\u00e1ch ly DC \u0111\u00fang c\u00e1ch \u0111\u00f2i h\u1ecfi ph\u1ea3i hi\u1ec3u r\u00f5 c\u00e1c y\u00eau c\u1ea7u chuy\u1ec3n m\u1ea1ch DC chuy\u00ean bi\u1ec7t, tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n an to\u00e0n hi\u1ec7n h\u00e0nh v\u00e0 ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c chi ti\u1ebft quan tr\u1ecdng nh\u01b0 nh\u1eadn d\u1ea1ng \u0111\u1ea7u n\u1ed1i v\u00e0 x\u00e1c minh c\u1ef1c t\u00ednh. Lu\u00f4n \u01b0u ti\u00ean an to\u00e0n v\u00e0 c\u00e2n nh\u1eafc l\u1eafp \u0111\u1eb7t chuy\u00ean nghi\u1ec7p cho c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p ho\u1eb7c khi kh\u00f4ng ch\u1eafc ch\u1eafn v\u1ec1 c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3.<\/p>\n<p><strong>D\u00e0nh cho l\u1eafp \u0111\u1eb7t chuy\u00ean nghi\u1ec7p<\/strong>: Li\u00ean h\u1ec7 v\u1edbi nh\u00e0 th\u1ea7u \u0111i\u1ec7n \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e9p, am hi\u1ec3u c\u00e1c y\u00eau c\u1ea7u c\u1ee7a AS\/NZS 5033:2021 v\u00e0 h\u1ec7 th\u1ed1ng c\u00e1ch ly DC \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o l\u1eafp \u0111\u1eb7t an to\u00e0n, tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh, b\u1ea3o v\u1ec7 c\u1ea3 nh\u00e2n s\u1ef1 v\u00e0 thi\u1ebft b\u1ecb.<\/p>\n<h2>Li\u00ean quan<\/h2>\n<p><a href=\"https:\/\/test.viox.com\/vi\/what-is-a-dc-isolator-switch\/\">C\u00f4ng t\u1eafc c\u00e1ch ly DC l\u00e0 g\u00ec<\/a><\/p>\n<p><a href=\"https:\/\/test.viox.com\/vi\/how-to-choose-the-right-dc-isolator-switcha-complete-guide\/\">C\u00e1ch ch\u1ecdn c\u00f4ng t\u1eafc c\u00e1ch ly DC ph\u00f9 h\u1ee3p: H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7<\/a><\/p>\n<p><a href=\"https:\/\/test.viox.com\/vi\/global-dc-isolator-switch-trend-why-more-companies-are-choosing-chinese-suppliers\/\">Xu h\u01b0\u1edbng c\u00f4ng t\u1eafc c\u00e1ch ly DC to\u00e0n c\u1ea7u: T\u1ea1i sao ng\u00e0y c\u00e0ng nhi\u1ec1u c\u00f4ng ty l\u1ef1a ch\u1ecdn nh\u00e0 cung c\u1ea5p Trung Qu\u1ed1c<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Bottom Line Up Front: DC isolator connection requires proper terminal identification, correct polarity wiring, and compliance with AS\/NZS 5033 safety standards. DC cables use Class 5 flexible conductors that must be terminated correctly to prevent failures, and consideration should be given to the termination of the DC conductor in the isolator&#8217;s terminals (526.9.1). What Are [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19014,"comment_status":"closed","ping_status":"open","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-19005","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\/19005","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=19005"}],"version-history":[{"count":0,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/19005\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/19014"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=19005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=19005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=19005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}