{"id":17669,"date":"2025-06-24T10:46:03","date_gmt":"2025-06-24T02:46:03","guid":{"rendered":"https:\/\/viox.com\/?p=17669"},"modified":"2026-01-03T23:50:27","modified_gmt":"2026-01-03T15:50:27","slug":"what-is-a-surge-protection-device","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/what-is-a-surge-protection-device\/","title":{"rendered":"Thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n (SPD) l\u00e0 g\u00ec?"},"content":{"rendered":"<div class=\"product-intro\">\n<p><strong>Thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n (SPD) l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n an to\u00e0n \u0111i\u1ec7n b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb v\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n kh\u1ecfi c\u00e1c \u0111\u1ed9t bi\u1ebfn \u0111i\u1ec7n \u00e1p do s\u00e9t, chuy\u1ec3n m\u1ea1ch l\u01b0\u1edbi \u0111i\u1ec7n ho\u1eb7c s\u1ef1 c\u1ed1 \u0111i\u1ec7n g\u00e2y ra.<\/strong> SPD t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n h\u01b0\u1edbng n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n d\u01b0 th\u1eeba xu\u1ed1ng \u0111\u1ea5t, ng\u0103n ng\u1eeba thi\u1ec7t h\u1ea1i cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1ea1y c\u1ea3m, thi\u1ebft b\u1ecb v\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng \u0111i\u1ec7n. Hi\u1ec3u v\u1ec1 c\u00f4ng ngh\u1ec7 SPD, c\u00e1c ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p v\u00e0 <a href=\"https:\/\/test.viox.com\/vi\/spd-installation-requirements-meeting-code-and-safety-standards\/\">y\u00eau c\u1ea7u l\u1eafp \u0111\u1eb7t<\/a> l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c kho\u1ea3n \u0111\u1ea7u t\u01b0 \u0111i\u1ec7n c\u1ee7a b\u1ea1n, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh v\u00e0 duy tr\u00ec an to\u00e0n \u0111i\u1ec7n trong c\u00e1c \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng, th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p.<\/p>\n<h2>C\u00e1i g\u00ec l\u00e0 m\u1ed9t <a href=\"https:\/\/test.viox.com\/vi\/spd\/\">Thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n<\/a>: \u0110\u1ecbnh ngh\u0129a k\u1ef9 thu\u1eadt<\/h2>\n<figure style=\"margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/img.viox.com\/Technical-cutaway-diagram-of-VIOX-surge-protection-device-showing-MOV-varistor-discs-thermal-disconnect-and-internal-surge-protection-components.webp\" alt=\"VIOX SPD technical cutaway diagram showing internal MOV discs and thermal disconnect mechanism\" \/><figcaption style=\"font-style: italic; text-align: center; color: #555; margin-top: 8px; font-size: 0.9em;\">H\u00ecnh 1: C\u1ea5u t\u1ea1o b\u00ean trong c\u1ee7a Thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n VIOX, l\u00e0m n\u1ed5i b\u1eadt c\u00e1c th\u00e0nh ph\u1ea7n an to\u00e0n quan tr\u1ecdng bao g\u1ed3m ng\u0103n x\u1ebfp MOV v\u00e0 h\u1ec7 th\u1ed1ng ng\u1eaft k\u1ebft n\u1ed1i nhi\u1ec7t.<\/figcaption><\/figure>\n<p>Thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n (SPD), c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t lan truy\u1ec1n ho\u1eb7c b\u1ed9 tri\u1ec7t ti\u00eau \u0111i\u1ec7n \u00e1p qu\u00e1 \u0111\u1ed9 (TVSS), l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n \u0111i\u1ec7n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u1ea1ch v\u00e0 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i kh\u1ecfi c\u00e1c qu\u00e1 \u0111\u1ed9 \u0111i\u1ec7n \u00e1p v\u00e0 xung \u0111i\u1ec7n. Thi\u1ebft b\u1ecb n\u1eb1m gi\u1eefa ngu\u1ed3n \u0111i\u1ec7n v\u00e0 thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n, li\u00ean t\u1ee5c theo d\u00f5i \u0111i\u1ec7n \u00e1p.<\/p>\n<p>Trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng (v\u00ed d\u1ee5: 120V AC \u1edf B\u1eafc M\u1ef9), SPD v\u1eabn v\u00f4 h\u00ecnh v\u1ec1 m\u1eb7t \u0111i\u1ec7n\u2014n\u00f3 th\u1ec3 hi\u1ec7n tr\u1edf kh\u00e1ng cao v\u00e0 cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n ch\u1ea1y kh\u00f4ng b\u1ecb c\u1ea3n tr\u1edf \u0111\u1ebfn c\u00e1c t\u1ea3i \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i. Th\u1eddi \u0111i\u1ec3m \u0111i\u1ec7n \u00e1p t\u0103ng tr\u00ean ng\u01b0\u1ee1ng k\u00edch ho\u1ea1t c\u1ee7a SPD\u2014\u0111i\u1ec7n \u00e1p k\u1eb9p ho\u1eb7c \u0111i\u1ec7n \u00e1p \u0111\u00e1nh th\u1ee7ng\u2014thi\u1ebft b\u1ecb chuy\u1ec3n sang tr\u1ea1ng th\u00e1i tr\u1edf kh\u00e1ng th\u1ea5p v\u00e0 chuy\u1ec3n n\u0103ng l\u01b0\u1ee3ng d\u01b0 th\u1eeba xu\u1ed1ng \u0111\u1ea5t ho\u1eb7c ti\u00eau t\u00e1n n\u00f3 b\u00ean trong.<\/p>\n<p><strong>\u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt ch\u00ednh:<\/strong><\/p>\n<ul>\n<li><strong>K\u1eb9p \u0111i\u1ec7n \u00e1p:<\/strong> Gi\u1edbi h\u1ea1n \u0111i\u1ec7n \u00e1p t\u1ed1i \u0111a \u1edf m\u1ee9c an to\u00e0n (th\u01b0\u1eddng l\u00e0 330V-500V cho m\u1ea1ch 120V theo UL 1449)<\/li>\n<li><strong>Th\u1eddi gian ph\u1ea3n h\u1ed3i:<\/strong> K\u00edch ho\u1ea1t trong nano gi\u00e2y \u0111\u1ebfn micro gi\u00e2y t\u00f9y thu\u1ed9c v\u00e0o c\u00f4ng ngh\u1ec7<\/li>\n<li><strong>H\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng:<\/strong> \u0110\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1eb1ng joules, cho bi\u1ebft t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng xung m\u00e0 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 x\u1eed l\u00fd<\/li>\n<li><strong>\u0110i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c t\u1ed1i \u0111a (MCOV):<\/strong> \u0110i\u1ec7n \u00e1p cao nh\u1ea5t m\u00e0 SPD c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c li\u00ean t\u1ee5c m\u00e0 kh\u00f4ng c\u1ea7n k\u00edch ho\u1ea1t<\/li>\n<\/ul>\n<p>H\u00e0nh \u0111\u1ed9ng k\u1eb9p n\u00e0y gi\u1eef cho \u0111i\u1ec7n \u00e1p m\u00e0 thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n nh\u00ecn th\u1ea5y \u1edf m\u1ee9c an to\u00e0n h\u01a1n, ng\u0103n ng\u1eeba thi\u1ec7t h\u1ea1i cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1ea1y c\u1ea3m. Khi qu\u00e1 \u0111\u1ed9 \u0111i qua, SPD s\u1ebd t\u1ef1 \u0111\u1ed9ng tr\u1edf v\u1ec1 tr\u1ea1ng th\u00e1i ch\u1edd c\u00f3 tr\u1edf kh\u00e1ng cao, s\u1eb5n s\u00e0ng cho s\u1ef1 ki\u1ec7n ti\u1ebfp theo.<\/p>\n<h2>T\u00ecm hi\u1ec3u v\u1ec1 S\u00e9t lan truy\u1ec1n: Ngu\u1ed3n g\u1ed1c v\u00e0 T\u00e1c \u0111\u1ed9ng<\/h2>\n<p>S\u00e9t lan truy\u1ec1n b\u1eaft ngu\u1ed3n t\u1eeb hai lo\u1ea1i r\u1ed9ng: c\u00e1c s\u1ef1 ki\u1ec7n b\u00ean ngo\u00e0i b\u1eaft ngu\u1ed3n t\u1eeb b\u00ean ngo\u00e0i c\u01a1 s\u1edf c\u1ee7a b\u1ea1n v\u00e0 c\u00e1c qu\u00e1 \u0111\u1ed9 b\u00ean trong do thi\u1ebft b\u1ecb t\u1ea1o ra trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a b\u1ea1n.<\/p>\n<h3>Nh\u1eefng ngu\u1ed3n \u0111\u1ed9t bi\u1ebfn t\u1eeb b\u00ean ngo\u00e0i<\/h3>\n<p><strong>Tia ch\u1edbp<\/strong> L\u00e0 ngu\u1ed3n g\u00e2y \u1ea5n t\u01b0\u1ee3ng nh\u1ea5t t\u1eeb b\u00ean ngo\u00e0i. M\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n c\u00f3 th\u1ec3 b\u01a1m d\u00f2ng \u0111i\u1ec7n v\u01b0\u1ee3t qu\u00e1 100.000 amperes v\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea1t \u0111\u1ebfn h\u00e0ng ch\u1ee5c ngh\u00ecn volt. Th\u1eadm ch\u00ed \u00e1nh s\u00e1ng gi\u00e1n ti\u1ebfp - m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng c\u00e1ch m\u1ea1ng m\u1ed9t d\u1eb7m - n\u0103ng l\u01b0\u1ee3ng v\u00e0o c\u00e1c \u0111\u01b0\u1eddng ph\u00e2n ph\u1ed1i ti\u1ec7n \u00edch th\u00f4ng qua c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb, g\u1eedi s\u1ef1 gia t\u0103ng m\u1ee9c h\u00e0ng ng\u00e0n v\u00e0o nh\u00e0 \u1edf v\u00e0 doanh nghi\u1ec7p.<\/p>\n<p><strong>Ho\u1ea1t \u0111\u1ed9ng chuy\u1ec3n m\u1ea1ch ti\u1ec7n \u00edch<\/strong> t\u1ea1o ra xung \u0111i\u1ec7n khi c\u00f4ng ty \u0111i\u1ec7n l\u1ef1c m\u1edf ho\u1eb7c \u0111\u00f3ng <a href=\"https:\/\/test.viox.com\/vi\/types-of-circuit-breakers\/\">b\u1ed9 ng\u1eaft m\u1ea1ch<\/a>, chuy\u1ec3n \u0111\u1ed5i c\u00e1c ng\u00e2n h\u00e0ng t\u1ee5 \u0111i\u1ec7n ho\u1eb7c x\u00f3a c\u00e1c l\u1ed7i tr\u00ean l\u01b0\u1edbi \u0111i\u1ec7n. Nh\u1eefng s\u1ef1 ki\u1ec7n n\u00e0y t\u1ea1o ra c\u00e1c \u0111\u1ed9t bi\u1ebfn \u0111i\u1ec7n \u00e1p th\u01b0\u1eddng trong ph\u1ea1m vi 600V \u0111\u1ebfn 1.000V\u2014\u00edt nghi\u00eam tr\u1ecdng h\u01a1n s\u00e9t nh\u01b0ng th\u01b0\u1eddng xuy\u00ean h\u01a1n nhi\u1ec1u.<\/p>\n<h3>Nh\u1eefng ngu\u1ed3n n\u1ed9i ph\u00e1t<\/h3>\n<p>C\u01a1 s\u1edf v\u1eadt ch\u1ea5t c\u1ee7a b\u1ea1n t\u1ea1o ra qu\u00e1 c\u1ea3nh m\u1ed7i ng\u00e0y. \u0110\u1ed9ng c\u01a1 ba pha l\u1edbn, m\u00e1y n\u00e9n HVAC, thang m\u00e1y v\u00e0 m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p s\u1ea3n xu\u1ea5t gai \u0111i\u1ec7n \u00e1p EMF (l\u1ef1c \u0111i\u1ec7n \u0111\u1ed9ng l\u1ef1c) khi ch\u00fang b\u1eaft \u0111\u1ea7u ho\u1eb7c d\u1eebng l\u1ea1i. Ngu\u1ed3n cung c\u1ea5p \u0111i\u1ec7n chuy\u1ec3n m\u1ea1ch, \u1ed5 \u0111\u0129a t\u1ea7n s\u1ed1 thay \u0111\u1ed5i (VFDs), v\u00e0 c\u00f4ng su\u1ea5t hi\u1ec7u ch\u1ec9nh c\u00f4ng su\u1ea5t t\u1ea1o ra c\u00e1c t\u1ea1m th\u1eddi dao \u0111\u1ed9ng. Nh\u1eefng b\u1ec1 l\u1ed3i b\u00ean trong n\u00e0y th\u01b0\u1eddng th\u1ea5p h\u01a1n \u0111i\u1ec7n \u00e1p \u0111\u1ec9nh so v\u1edbi s\u00e9t nh\u01b0ng x\u1ea3y ra th\u01b0\u1eddng xuy\u00ean h\u01a1n - h\u00e0ng ch\u1ee5c ho\u1eb7c h\u00e0ng tr\u0103m l\u1ea7n m\u1ed7i ng\u00e0y trong c\u00e1c thi\u1ebft l\u1eadp c\u00f4ng nghi\u1ec7p.<\/p>\n<h2>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n: Khoa h\u1ecdc \u0111\u1eb1ng sau B\u1ea3o v\u1ec7<\/h2>\n<p>SPD ho\u1ea1t \u0111\u1ed9ng nh\u01b0 c\u00e1c c\u00f4ng t\u1eafc ho\u1eb7c k\u1eb9p \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1eb1ng \u0111i\u1ec7n \u00e1p. Ch\u00fang v\u1eabn \u1edf tr\u1ea1ng th\u00e1i tr\u1edf kh\u00e1ng cao (kh\u00f4ng d\u1eabn \u0111i\u1ec7n) trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, sau \u0111\u00f3 nhanh ch\u00f3ng chuy\u1ec3n sang tr\u1ea1ng th\u00e1i tr\u1edf kh\u00e1ng th\u1ea5p (d\u1eabn \u0111i\u1ec7n) khi \u0111i\u1ec7n \u00e1p v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng k\u00edch ho\u1ea1t c\u1ee7a ch\u00fang.<\/p>\n<figure style=\"margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/img.viox.com\/Technical-diagram-showing-SPD-surge-protection-device-voltage-clamping-mechanism-reducing-1200V-electrical-surge-to-safe-330V-level-protecting-equipment.webp\" alt=\"Oscilloscope diagram showing SPD clamping a 1200V surge down to 330V\" \/><figcaption style=\"font-style: italic; text-align: center; color: #555; margin-top: 8px; font-size: 0.9em;\">H\u00ecnh 2: S\u01a1 \u0111\u1ed3 k\u1ef9 thu\u1eadt minh h\u1ecda c\u01a1 ch\u1ebf k\u1eb9p: SPD ph\u00e1t hi\u1ec7n \u0111\u1ec9nh xung 1200V v\u00e0 ngay l\u1eadp t\u1ee9c k\u1eb9p \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra xu\u1ed1ng m\u1ee9c an to\u00e0n 330V.<\/figcaption><\/figure>\n<h3>Tr\u00ecnh t\u1ef1 B\u1ea3o v\u1ec7<\/h3>\n<ol>\n<li><strong>Ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng:<\/strong> \u0110i\u1ec7n \u00e1p \u0111\u01b0\u1eddng d\u00e2y l\u00e0 120V AC. SPD c\u00f3 \u0111i\u1ec7n tr\u1edf c\u1ef1c k\u1ef3 cao, ch\u1ec9 h\u00fat microampe d\u00f2ng \u0111i\u1ec7n r\u00f2 r\u1ec9. Thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n nh\u1eadn \u0111\u01b0\u1ee3c ngu\u1ed3n \u0111i\u1ec7n s\u1ea1ch.<\/li>\n<li><strong>S\u1ef1 ki\u1ec7n xung \u0111i\u1ec7n b\u1eaft \u0111\u1ea7u:<\/strong> M\u1ed9t tia s\u00e9t ho\u1eb7c thao t\u00e1c chuy\u1ec3n m\u1ea1ch t\u1ea1o ra m\u1ed9t qu\u00e1 \u0111\u1ed9. \u0110i\u1ec7n \u00e1p t\u0103ng nhanh t\u1eeb 120V l\u00ean 1.000V ho\u1eb7c cao h\u01a1n trong v\u00f2ng micro gi\u00e2y.<\/li>\n<li><strong>SPD k\u00edch ho\u1ea1t:<\/strong> Khi \u0111i\u1ec7n \u00e1p v\u01b0\u1ee3t qua ng\u01b0\u1ee1ng \u0111\u00e1nh th\u1ee7ng c\u1ee7a th\u00e0nh ph\u1ea7n, c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3. C\u00e1c th\u00e0nh ph\u1ea7n nh\u01b0 MOV gi\u1ea3m \u0111i\u1ec7n tr\u1edf theo c\u1ea5p s\u1ed1 nh\u00e2n trong nano gi\u00e2y.<\/li>\n<li><strong>Chuy\u1ec3n h\u01b0\u1edbng n\u0103ng l\u01b0\u1ee3ng:<\/strong> B\u00e2y gi\u1edd \u1edf tr\u1ea1ng th\u00e1i tr\u1edf kh\u00e1ng th\u1ea5p, SPD t\u1ea1o ra m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn xu\u1ed1ng \u0111\u1ea5t. D\u00f2ng \u0111i\u1ec7n xung ch\u1ea1y qua SPD thay v\u00ec thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n. \u0110i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c k\u1eb9p \u1edf m\u1ee9c an to\u00e0n (v\u00ed d\u1ee5: 330V).<\/li>\n<li><strong>\u0110\u1eb7t l\u1ea1i:<\/strong> Khi d\u1ea1ng s\u00f3ng xung \u0111i\u1ec7n suy gi\u1ea3m, \u0111i\u1ec7n \u00e1p gi\u1ea3m tr\u1edf l\u1ea1i m\u1ee9c b\u00ecnh th\u01b0\u1eddng. SPD t\u1ef1 \u0111\u1ed9ng tr\u1edf v\u1ec1 tr\u1ea1ng th\u00e1i tr\u1edf kh\u00e1ng cao, s\u1eb5n s\u00e0ng cho s\u1ef1 ki\u1ec7n ti\u1ebfp theo.<\/li>\n<\/ol>\n<h2>C\u00f4ng ngh\u1ec7 SPD: So s\u00e1nh MOV, GDT v\u00e0 TVS<\/h2>\n<p>Thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n d\u1ef1a tr\u00ean ba c\u00f4ng ngh\u1ec7 th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i, m\u1ed7i c\u00f4ng ngh\u1ec7 c\u00f3 c\u00e1c nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t ri\u00eang bi\u1ec7t.<\/p>\n<figure style=\"margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/img.viox.com\/Comparison-chart-of-surge-protection-device-technologies-MOV-metal-oxide-varistor-GDT-gas-discharge-tube-and-TVS-diode-specifications-and-applications.webp\" alt=\"Comparison chart of MOV, GDT, and TVS Diode technologies\" \/><figcaption style=\"font-style: italic; text-align: center; color: #555; margin-top: 8px; font-size: 0.9em;\">H\u00ecnh 3: So s\u00e1nh to\u00e0n di\u1ec7n c\u00e1c c\u00f4ng ngh\u1ec7 ch\u1ed1ng s\u00e9t lan truy\u1ec1n (MOV, GDT, TVS), tr\u00ecnh b\u00e0y chi ti\u1ebft th\u1eddi gian ph\u1ea3n h\u1ed3i, \u0111\u1ecbnh m\u1ee9c n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng l\u00fd t\u01b0\u1edfng.<\/figcaption><\/figure>\n<h3>Varistor oxit Kim lo\u1ea1i (MOV)<\/h3>\n<p><strong>Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng:<\/strong> M\u1ed9t \u0111i\u1ec7n tr\u1edf ph\u1ee5 thu\u1ed9c v\u00e0o \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb c\u00e1c h\u1ea1t oxit k\u1ebdm thi\u00eau k\u1ebft. M\u1ed7i ranh gi\u1edbi h\u1ea1t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ti\u1ebfp gi\u00e1p diode hi\u1ec3n vi. \u1ede \u0111i\u1ec7n \u00e1p th\u1ea5p, n\u00f3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ch\u1ea5t c\u00e1ch \u0111i\u1ec7n; tr\u00ean \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c c\u1ee7a n\u00f3, c\u00e1c ti\u1ebfp gi\u00e1p b\u1ecb ph\u00e1 v\u1ee1 v\u00e0 \u0111i\u1ec7n tr\u1edf gi\u1ea3m xu\u1ed1ng mili\u00f4m.<\/p>\n<p><strong>\u0110\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t:<\/strong> Ph\u1ea3n h\u1ed3i nhanh (nano gi\u00e2y), dung l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng cao (kilojoules) v\u00e0 \u0111i\u1ec7n \u00e1p k\u1eb9p v\u1eeba ph\u1ea3i. MOV suy gi\u1ea3m t\u00edch l\u0169y v\u1edbi m\u1ed7i s\u1ef1 ki\u1ec7n xung \u0111i\u1ec7n, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c gh\u00e9p n\u1ed1i v\u1edbi c\u1ea7u ch\u00ec nhi\u1ec7t.<\/p>\n<p><strong>\u1ee8ng d\u1ee5ng:<\/strong> Con ng\u1ef1a th\u1ed3 c\u1ee7a b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t lan truy\u1ec1n. \u0110\u01b0\u1ee3c t\u00ecm th\u1ea5y trong d\u1ea3i ngu\u1ed3n, SPD to\u00e0n b\u1ed9 nh\u00e0 v\u00e0 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p. T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 <a href=\"https:\/\/test.viox.com\/vi\/surge-protective-device-lifespan-mov-aging-guide\/\">MOV l\u00e3o h\u00f3a v\u00e0 c\u00e1c c\u00e2n nh\u1eafc v\u1ec1 tu\u1ed5i th\u1ecd<\/a>.<\/p>\n<h3>\u1ed0ng x\u1ea3 kh\u00ed (GDT)<\/h3>\n<p><strong>Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng:<\/strong> M\u1ed9t \u1ed1ng k\u00edn ch\u1ee9a \u0111\u1ea7y kh\u00ed tr\u01a1. D\u01b0\u1edbi \u0111i\u1ec7n \u00e1p b\u00ecnh th\u01b0\u1eddng, n\u00f3 l\u00e0 m\u1ed9t ch\u1ea5t c\u00e1ch \u0111i\u1ec7n. Khi \u0111i\u1ec7n \u00e1p v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng \u0111\u00e1nh l\u1eeda, kh\u00ed ion h\u00f3a th\u00e0nh m\u1ed9t h\u1ed3 quang plasma d\u1eabn \u0111i\u1ec7n, t\u1ea1o ra m\u1ed9t m\u1ea1ch ng\u1eafn (h\u00e0nh \u0111\u1ed9ng crowbar) x\u1eed l\u00fd d\u00f2ng \u0111i\u1ec7n l\u1edbn.<\/p>\n<p><strong>\u0110\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t:<\/strong> Ph\u1ea3n h\u1ed3i ch\u1eadm h\u01a1n (micro gi\u00e2y) nh\u01b0ng dung l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng c\u1ef1c k\u1ef3 cao (h\u00e0ng ch\u1ee5c kiloampe). Tu\u1ed5i th\u1ecd tuy\u1ec7t v\u1eddi nh\u01b0ng y\u00eau c\u1ea7u \u201cd\u00f2ng \u0111i\u1ec7n theo sau\u201d \u0111\u1ec3 d\u1eadp t\u1eaft.<\/p>\n<p><strong>\u1ee8ng d\u1ee5ng:<\/strong> L\u1ed1i v\u00e0o d\u1ecbch v\u1ee5 v\u00e0 b\u1ea3o v\u1ec7 ch\u00ednh vi\u1ec5n th\u00f4ng\/truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n<h3>Transent Voltage Suppressor (TV) Diode<\/h3>\n<p><strong>Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng:<\/strong> M\u1ed9t diode avalanche silicon. N\u00f3 ho\u1ea1t \u0111\u1ed9ng trong ph\u00e2n c\u1ef1c ng\u01b0\u1ee3c v\u00e0 \u0111i v\u00e0o s\u1ef1 c\u1ed1 avalanche khi \u0111i\u1ec7n \u00e1p v\u01b0\u1ee3t qu\u00e1 gi\u1edbi h\u1ea1n c\u1ee7a n\u00f3, k\u1eb9p \u0111i\u1ec7n \u00e1p m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n<p><strong>\u0110\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t:<\/strong> Ph\u1ea3n h\u1ed3i nhanh nh\u1ea5t (picoseconds), k\u1eb9p r\u1ea5t ch\u00ednh x\u00e1c, nh\u01b0ng dung l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n so v\u1edbi MOV ho\u1eb7c GDT.<\/p>\n<p><strong>\u1ee8ng d\u1ee5ng:<\/strong> B\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1ea1y c\u1ea3m, \u0111\u01b0\u1eddng truy\u1ec1n d\u1eef li\u1ec7u v\u00e0 m\u1ea1ch DC \u0111i\u1ec7n \u00e1p th\u1ea5p.<\/p>\n<h3>B\u1ea3ng so s\u00e1nh c\u00f4ng ngh\u1ec7<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px; border-color: #ddd;\" border=\"1\">\n<thead style=\"background-color: #f2f2f2;\">\n<tr>\n<th style=\"padding: 10px; text-align: left;\">C\u00f4ng ngh\u1ec7<\/th>\n<th style=\"padding: 10px; text-align: left;\">Ph\u1ea3n \u1ee8ng Th\u1eddi Gian<\/th>\n<th style=\"padding: 10px; text-align: left;\">N\u0103ng l\u01b0\u1ee3ng<\/th>\n<th style=\"padding: 10px; text-align: left;\">Ch\u00ednh x\u00e1c<\/th>\n<th style=\"padding: 10px; text-align: left;\">\u0110i\u1ec3n H\u00ecnh D\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\"><strong>MOV<\/strong><\/td>\n<td style=\"padding: 10px;\">Nano gi\u00e2y<\/td>\n<td style=\"padding: 10px;\">Cao (kJ)<\/td>\n<td style=\"padding: 10px;\">V\u1eeba ph\u1ea3i<\/td>\n<td style=\"padding: 10px;\">Trung t\u01b0\u1edbng AC\/DC \u0111\u1ed9t k\u00edch b\u1ea3o v\u1ec7<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>B\u1ec7nh GDT<\/strong><\/td>\n<td style=\"padding: 10px;\">Micro gi\u00e2y<\/td>\n<td style=\"padding: 10px;\">R\u1ea5t cao (kJ)<\/td>\n<td style=\"padding: 10px;\">Ban \u0111\u1ea7u th\u00ec th\u1ea5p r\u1ed3i \u0111\u1ebfn x\u00e0 beng<\/td>\n<td style=\"padding: 10px;\">C\u1ed5ng th\u00f4ng tin, telecom Primary<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>\u0110i\u1ed1t TVS<\/strong><\/td>\n<td style=\"padding: 10px;\">Picoseconds<\/td>\n<td style=\"padding: 10px;\">Trung b\u00ecnh th\u1ea5p (J)<\/td>\n<td style=\"padding: 10px;\">R\u1ea5t cao<\/td>\n<td style=\"padding: 10px;\">D\u00f2ng d\u1eef li\u1ec7u, m\u1ea1ch DC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u0110\u1ec3 so s\u00e1nh chi ti\u1ebft, h\u00e3y xem h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <a href=\"https:\/\/test.viox.com\/vi\/mov-vs-gdt-vs-tvs-comparison\/\">C\u00f4ng ngh\u1ec7 MOV so v\u1edbi GDT so v\u1edbi TVS<\/a>.<\/p>\n<h2>Ph\u00e2n lo\u1ea1i SPD: Lo\u1ea1i 1, 2 v\u00e0 3<\/h2>\n<p>C\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 IEC 61643-11 (h\u1ec7 th\u1ed1ng AC), IEC 61643-31 (h\u1ec7 th\u1ed1ng DC\/PV) v\u00e0 UL 1449 (B\u1eafc M\u1ef9) x\u00e1c \u0111\u1ecbnh c\u00e1c lo\u1ea1i SPD kh\u00e1c nhau d\u1ef1a tr\u00ean d\u1ea1ng s\u00f3ng th\u1eed nghi\u1ec7m, kh\u1ea3 n\u0103ng n\u0103ng l\u01b0\u1ee3ng v\u00e0 v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t.<\/p>\n<h3>SPD lo\u1ea1i 1 (Lo\u1ea1i I)<\/h3>\n<p><strong>V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t:<\/strong> L\u1ed1i v\u00e0o d\u1ecbch v\u1ee5, gi\u1eefa \u0111\u1ed3ng h\u1ed3 \u0111o v\u00e0 b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh<br \/>\n<strong>M\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7:<\/strong> B\u1ea3o v\u1ec7 ch\u00ednh ch\u1ed1ng s\u00e9t \u0111\u00e1nh tr\u1ef1c ti\u1ebfp<br \/>\n<strong>D\u1ea1ng s\u00f3ng th\u1eed nghi\u1ec7m:<\/strong> Xung d\u00f2ng \u0111i\u1ec7n 10\/350 \u03bcs<br \/>\n<strong>\u0110\u1ecbnh m\u1ee9c xung \u0111i\u1ec7n:<\/strong> Th\u01b0\u1eddng l\u00e0 50-160 kA<br \/>\n<strong>\u1ee8ng d\u1ee5ng:<\/strong> B\u1ea3ng \u0111i\u1ec7n ch\u00ednh, l\u1eafp \u0111\u1eb7t ngo\u00e0i tr\u1eddi, c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng<\/p>\n<h3>SPD lo\u1ea1i 2 (Lo\u1ea1i II)<\/h3>\n<p><strong>V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t:<\/strong> B\u1ea3ng \u0111i\u1ec7n ch\u00ednh, b\u1ea3ng \u0111i\u1ec7n ph\u1ee5<br \/>\n<strong>M\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7:<\/strong> B\u1ea3o v\u1ec7 th\u1ee9 c\u1ea5p ch\u1ed1ng l\u1ea1i c\u00e1c xung \u0111i\u1ec7n d\u1eabn<br \/>\n<strong>D\u1ea1ng s\u00f3ng th\u1eed nghi\u1ec7m:<\/strong> Xung d\u00f2ng \u0111i\u1ec7n 8\/20 \u03bcs<br \/>\n<strong>\u0110\u1ecbnh m\u1ee9c xung \u0111i\u1ec7n:<\/strong> Th\u01b0\u1eddng l\u00e0 20-80 kA<br \/>\n<strong>\u1ee8ng d\u1ee5ng:<\/strong> B\u1ea3ng ph\u00e2n ph\u1ed1i, m\u1ea1ch nh\u00e1nh, h\u1ea7u h\u1ebft c\u00e1c l\u1eafp \u0111\u1eb7t d\u00e2n d\u1ee5ng v\u00e0 th\u01b0\u01a1ng m\u1ea1i<\/p>\n<h3>SPD lo\u1ea1i 3 (Lo\u1ea1i III)<\/h3>\n<p><strong>V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t:<\/strong> \u0110i\u1ec3m s\u1eed d\u1ee5ng, \u1ed5 c\u1eafm ri\u00eang l\u1ebb<br \/>\n<strong>M\u1ee9c \u0111\u1ed9 b\u1ea3o v\u1ec7:<\/strong> B\u1ea3o v\u1ec7 cu\u1ed1i c\u00f9ng cho thi\u1ebft b\u1ecb nh\u1ea1y c\u1ea3m<br \/>\n<strong>D\u1ea1ng s\u00f3ng th\u1eed nghi\u1ec7m:<\/strong> S\u00f3ng k\u1ebft h\u1ee3p (\u0111i\u1ec7n \u00e1p 1,2\/50 \u03bcs, d\u00f2ng \u0111i\u1ec7n 8\/20 \u03bcs)<br \/>\n<strong>\u0110\u1ecbnh m\u1ee9c xung \u0111i\u1ec7n:<\/strong> Th\u01b0\u1eddng l\u00e0 1-15 kA<br \/>\n<strong>\u1ee8ng d\u1ee5ng:<\/strong> Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, m\u00e1y t\u00ednh, thi\u1ebft b\u1ecb, h\u1ec7 th\u1ed1ng gi\u1ea3i tr\u00ed gia \u0111\u00ecnh<\/p>\n<h3>B\u1ea3ng ch\u1ecdn lo\u1ea1i SPD<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px; border-color: #ddd;\" border=\"1\">\n<thead style=\"background-color: #f2f2f2;\">\n<tr>\n<th style=\"padding: 10px; text-align: left;\">\u1ee8ng D\u1ee5ng Lo\u1ea1i<\/th>\n<th style=\"padding: 10px; text-align: left;\">Lo\u1ea1i SPD \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t<\/th>\n<th style=\"padding: 10px; text-align: left;\">X\u1ebfp h\u1ea1ng \u0111\u1ed9t bi\u1ebfn t\u1ed1i thi\u1ec3u<\/th>\n<th style=\"padding: 10px; text-align: left;\">C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ea7n thi\u1ebft<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\"><strong>B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh d\u00e2n d\u1ee5ng<\/strong><\/td>\n<td style=\"padding: 10px;\">Lo\u1ea1i 2, c\u00f4ng ngh\u1ec7 MOV<\/td>\n<td style=\"padding: 10px;\">40 kA m\u1ed7i ch\u1ebf \u0111\u1ed9<\/td>\n<td style=\"padding: 10px;\">Ti\u00eau chu\u1ea9n UL 1449, ch\u1ec9 b\u00e1o tr\u1ef1c quan<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Ph\u00e2n ph\u1ed1i th\u01b0\u01a1ng m\u1ea1i<\/strong><\/td>\n<td style=\"padding: 10px;\">Lo\u1ea1i 2, MOV ho\u1eb7c lai<\/td>\n<td style=\"padding: 10px;\">80-160 kA m\u1ed7i ch\u1ebf \u0111\u1ed9<\/td>\n<td style=\"padding: 10px;\">Gi\u00e1m s\u00e1t t\u1eeb xa, m\u00f4-\u0111un c\u00f3 th\u1ec3 thay th\u1ebf<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>T\u1ea3i tr\u1ecdng quan tr\u1ecdng trong c\u00f4ng nghi\u1ec7p<\/strong><\/td>\n<td style=\"padding: 10px;\">Ph\u1ed1i h\u1ee3p lo\u1ea1i 1 + lo\u1ea1i 2<\/td>\n<td style=\"padding: 10px;\">100+ kA m\u1ed7i ch\u1ebf \u0111\u1ed9<\/td>\n<td style=\"padding: 10px;\">Thi\u1ebft k\u1ebf an to\u00e0n, b\u1ea3o v\u1ec7 d\u1ef1 ph\u00f2ng<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed t\u1ea1i \u0111i\u1ec3m s\u1eed d\u1ee5ng<\/strong><\/td>\n<td style=\"padding: 10px;\">Lo\u1ea1i 3, SAD ho\u1eb7c MOV<\/td>\n<td style=\"padding: 10px;\">1-6 kA<\/td>\n<td style=\"padding: 10px;\">\u0110i\u1ec7n \u00e1p k\u1eb9p th\u1ea5p, l\u1ecdc EMI<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Hi\u1ec3u bi\u1ebft <a href=\"https:\/\/test.viox.com\/vi\/where-to-install-spds-electrical-panel-guide\/\">V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t SPD<\/a> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 b\u1ea3o v\u1ec7 hi\u1ec7u qu\u1ea3.<\/p>\n<h2>Gi\u1ea3i th\u00edch c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng c\u1ee7a SPD<\/h2>\n<h3>\u0110\u00e1nh gi\u00e1 Joules (h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng)<\/h3>\n<p>Cho bi\u1ebft t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng m\u00e0 thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 tr\u01b0\u1edbc khi h\u1ecfng. \u0110\u1ecbnh m\u1ee9c cao h\u01a1n th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0 tu\u1ed5i th\u1ecd d\u00e0i h\u01a1n. Tuy nhi\u00ean, <a href=\"https:\/\/test.viox.com\/vi\/surge-protector-joules-rating-guide\/\">ch\u1ec9 s\u1ed1 joules kh\u00f4ng cho bi\u1ebft hi\u1ec7u su\u1ea5t k\u1eb9p \u0111i\u1ec7n \u00e1p<\/a>\u2014m\u1ed9t thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ecbnh m\u1ee9c joule cao nh\u01b0ng kh\u1ea3 n\u0103ng k\u1eb9p \u0111i\u1ec7n \u00e1p k\u00e9m.<\/p>\n<h3>\u0110i\u1ec7n \u00e1p k\u1eb9p (VPR \u2013 \u0110\u1ecbnh m\u1ee9c b\u1ea3o v\u1ec7 \u0111i\u1ec7n \u00e1p)<\/h3>\n<p>\u0110i\u1ec7n \u00e1p t\u1ed1i \u0111a m\u00e0 SPD cho ph\u00e9p \u0111i qua thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n. \u0110\u1ed1i v\u1edbi m\u1ea1ch 120V, h\u00e3y t\u00ecm \u0111\u1ecbnh m\u1ee9c UL 1449 VPR l\u00e0 330V, 400V ho\u1eb7c 500V. Gi\u00e1 tr\u1ecb th\u1ea5p h\u01a1n th\u00ec t\u1ed1t h\u01a1n cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1ea1y c\u1ea3m. \u0110\u00e2y l\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb.<\/p>\n<h3>\u0110i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c t\u1ed1i \u0111a (MCOV)<\/h3>\n<p>\u0110i\u1ec7n \u00e1p cao nh\u1ea5t m\u00e0 SPD c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c li\u00ean t\u1ee5c m\u00e0 kh\u00f4ng c\u1ea7n k\u00edch ho\u1ea1t. L\u1ef1a ch\u1ecdn <a href=\"https:\/\/test.viox.com\/vi\/mcov-spd-maximum-continuous-operating-voltage-guide\/\">MCOV ph\u00f9 h\u1ee3p<\/a> \u0111\u1ea3m b\u1ea3o thi\u1ebft b\u1ecb kh\u00f4ng b\u1ecb ng\u1eaft m\u1ea1ch do c\u00e1c bi\u1ebfn \u0111\u1ed9ng \u0111i\u1ec7n \u00e1p th\u00f4ng th\u01b0\u1eddng.<\/p>\n<h3>Ph\u1ea3n \u1ee8ng Th\u1eddi Gian<\/h3>\n<p>T\u1ed1c \u0111\u1ed9 thi\u1ebft b\u1ecb ph\u1ea3n \u1ee9ng v\u1edbi c\u00e1c \u0111\u1ed9t bi\u1ebfn \u0111i\u1ec7n \u00e1p. M\u1eb7c d\u00f9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c qu\u1ea3ng c\u00e1o, nh\u01b0ng MOVs ti\u00eau chu\u1ea9n (nano gi\u00e2y) \u0111\u1ee7 nhanh cho h\u1ea7u h\u1ebft c\u00e1c xung \u0111i\u1ec7n tr\u00ean \u0111\u01b0\u1eddng d\u00e2y \u0111i\u1ec7n. Diode TVS (pico gi\u00e2y) l\u00e0 c\u1ea7n thi\u1ebft cho \u0111\u01b0\u1eddng truy\u1ec1n d\u1eef li\u1ec7u.<\/p>\n<h3><a href=\"https:\/\/test.viox.com\/vi\/what-is-sccr\/\">\u0110\u1ecbnh m\u1ee9c d\u00f2ng ng\u1eafn m\u1ea1ch (SCCR)<\/a><\/h3>\n<p>D\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 t\u1ed1i \u0111a m\u00e0 SPD c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c m\u1ed9t c\u00e1ch an to\u00e0n m\u00e0 kh\u00f4ng g\u00e2y ra nguy c\u01a1 h\u1ecfa ho\u1ea1n. Ph\u1ea3i \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng \u1edf th\u01b0\u1ee3ng ngu\u1ed3n.<\/p>\n<h2>\u1ee8ng d\u1ee5ng SPD theo ng\u00e0nh<\/h2>\n<figure style=\"margin: 20px 0;\"><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\" src=\"https:\/\/img.viox.com\/VIOX-whole-house-surge-protection-device-installed-in-residential-electrical-panel-with-green-status-indicator-showing-active-protection.webp\" alt=\"VIOX whole house surge protector installed in electrical panel\" \/><figcaption style=\"font-style: italic; text-align: center; color: #555; margin-top: 8px; font-size: 0.9em;\">H\u00ecnh 4: SPD b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 ng\u00f4i nh\u00e0 VIOX \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t b\u00ean trong b\u1ea3ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng. L\u01b0u \u00fd c\u00e1c \u0111\u00e8n LED m\u00e0u xanh l\u00e1 c\u00e2y cho bi\u1ebft c\u00e1c m\u1ea1ch b\u1ea3o v\u1ec7 \u0111ang ho\u1ea1t \u0111\u1ed9ng v\u00e0 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/figcaption><\/figure>\n<h3>\u1ee8ng d\u1ee5ng d\u00e2n d\u1ee5ng<\/h3>\n<p><strong>B\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 ng\u00f4i nh\u00e0:<\/strong> SPD lo\u1ea1i 2 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t t\u1ea1i b\u1ea3ng \u0111i\u1ec7n ch\u00ednh b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 t\u00f2a nh\u00e0 kh\u1ecfi c\u00e1c xung \u0111i\u1ec7n b\u00ean ngo\u00e0i (s\u00e9t, chuy\u1ec3n m\u1ea1ch ti\u1ec7n \u00edch). Ch\u00fang x\u1eed l\u00fd n\u0103ng l\u01b0\u1ee3ng cao (20-50 kA) nh\u01b0ng c\u00f3 \u0111i\u1ec7n \u00e1p k\u1eb9p cao h\u01a1n (600-1000V).<\/p>\n<p><strong>B\u1ea3o v\u1ec7 t\u1ea1i \u0111i\u1ec3m s\u1eed d\u1ee5ng:<\/strong> \u1ed4 c\u1eafm \u0111i\u1ec7n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb c\u1eafm \u0111i\u1ec7n lo\u1ea1i 3 b\u1ea3o v\u1ec7 c\u00e1c thi\u1ebft b\u1ecb nh\u1ea1y c\u1ea3m c\u1ee5 th\u1ec3 kh\u1ecfi \u0111i\u1ec7n \u00e1p d\u01b0 v\u00e0 c\u00e1c xung \u0111i\u1ec7n b\u00ean trong. Ch\u00fang cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1eb9p ch\u1eb7t h\u01a1n (330-400V) nh\u01b0ng dung l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng th\u1ea5p h\u01a1n.<\/p>\n<p><strong>Chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 theo l\u1edbp:<\/strong> C\u00e1ch t\u1ed1t nh\u1ea5t l\u00e0 s\u1eed d\u1ee5ng c\u1ea3 hai. M\u1ed9t thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 ng\u00f4i nh\u00e0 h\u1ea5p th\u1ee5 ph\u1ea7n l\u1edbn n\u0103ng l\u01b0\u1ee3ng, trong khi c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 t\u1ea1i \u0111i\u1ec3m s\u1eed d\u1ee5ng lo\u1ea1i b\u1ecf \u0111i\u1ec7n \u00e1p d\u01b0 cho c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1ea1y c\u1ea3m. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y hi\u1ec7u qu\u1ea3 h\u01a1n l\u00e0 ch\u1ec9 d\u1ef1a v\u00e0o <a href=\"https:\/\/test.viox.com\/vi\/grounding-vs-gfci-vs-surge-protection\/\">b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t lan truy\u1ec1n so v\u1edbi GFCI ho\u1eb7c n\u1ed1i \u0111\u1ea5t \u0111\u01a1n thu\u1ea7n<\/a>.<\/p>\n<h3>C\u00f4ng nghi\u1ec7p v\u00e0 th\u01b0\u01a1ng m\u1ea1i \u1ee8ng d\u1ee5ng<\/h3>\n<p><strong>B\u1ea3o v\u1ec7 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng:<\/strong><\/p>\n<ul>\n<li>Trung t\u00e2m d\u1eef li\u1ec7u: Nhi\u1ec1u giai \u0111o\u1ea1n SPD ph\u1ed1i h\u1ee3p b\u1ea3o v\u1ec7 m\u00e1y ch\u1ee7, thi\u1ebft b\u1ecb m\u1ea1ng v\u00e0 h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t<\/li>\n<li>C\u01a1 s\u1edf s\u1ea3n xu\u1ea5t: B\u1ea3o v\u1ec7 PLC, \u1ed5 \u0111\u0129a \u0111\u1ed9ng c\u01a1, robot v\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n quy tr\u00ecnh<\/li>\n<li>C\u01a1 s\u1edf y t\u1ebf: Thi\u1ebft b\u1ecb ch\u1ee5p \u1ea3nh y t\u1ebf, h\u1ec7 th\u1ed1ng theo d\u00f5i b\u1ec7nh nh\u00e2n v\u00e0 thi\u1ebft b\u1ecb an to\u00e0n t\u00ednh m\u1ea1ng<\/li>\n<li>Vi\u1ec5n th\u00f4ng: B\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb chuy\u1ec3n m\u1ea1ch, tr\u1ea1m g\u1ed1c v\u00e0 thi\u1ebft b\u1ecb \u0111\u1ea7u cu\u1ed1i s\u1ee3i quang<\/li>\n<\/ul>\n<p><strong>H\u1ec7 th\u1ed1ng PV n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi:<\/strong> SPD chuy\u00ean d\u1ee5ng \u0111\u1ecbnh m\u1ee9c DC cho h\u1ed9p k\u1ebft h\u1ee3p, bi\u1ebfn t\u1ea7n v\u00e0 ph\u00e2n ph\u1ed1i AC. Ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n IEC 61643-31 cho c\u00e1c \u1ee9ng d\u1ee5ng quang \u0111i\u1ec7n.<\/p>\n<h2>Y\u00eau c\u1ea7u c\u00e0i \u0111\u1eb7t v\u00e0 tu\u00e2n th\u1ee7 m\u00e3<\/h2>\n<h3>\u0110i\u1ec7n qu\u1ed1c gia M\u00e3 (\u0110\u01af\u1ee2C...) y\u00eau C\u1ea7u<\/h3>\n<p><strong>\u0110i\u1ec1u 285 \u2013 Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t lan truy\u1ec1n (SPD):<\/strong><\/p>\n<ul>\n<li>SPD ph\u1ea3i \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea v\u00e0 d\u00e1n nh\u00e3n cho \u1ee9ng d\u1ee5ng d\u1ef1 ki\u1ebfn (UL 1449)<\/li>\n<li>Vi\u1ec7c l\u1eafp \u0111\u1eb7t ph\u1ea3i tu\u00e2n th\u1ee7 h\u01b0\u1edbng d\u1eabn c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/li>\n<li>SPD y\u00eau c\u1ea7u ph\u1ed1i h\u1ee3p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng th\u00edch h\u1ee3p<\/li>\n<li>Chi\u1ec1u d\u00e0i d\u00e2y d\u1eabn n\u1ed1i \u0111\u1ea5t ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u (l\u00fd t\u01b0\u1edfng l\u00e0 d\u01b0\u1edbi 12 inch)<\/li>\n<li>SPD lo\u1ea1i 1 y\u00eau c\u1ea7u ph\u01b0\u01a1ng ti\u1ec7n ng\u1eaft k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c v\u1edbi nh\u1eefng ng\u01b0\u1eddi c\u00f3 tr\u00ecnh \u0111\u1ed9<\/li>\n<\/ul>\n<p>Tr\u00e1nh nh\u1eefng l\u1ed7i <a href=\"https:\/\/test.viox.com\/vi\/spd-installation-mistakes-fix-guide\/\">l\u1eafp \u0111\u1eb7t SPD ph\u1ed5 bi\u1ebfn<\/a> l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 b\u1ea3o v\u1ec7 hi\u1ec7u qu\u1ea3.<\/p>\n<h3>C\u00e0i \u0110\u1eb7t Th\u1ef1c H\u00e0nh T\u1ed1t Nh\u1ea5t<\/h3>\n<ol>\n<li><strong>Ti\u1ebfp \u0111\u1ea5t \u0111\u00fang c\u00e1ch:<\/strong> S\u1eed d\u1ee5ng \u0111\u01b0\u1eddng d\u1eabn n\u1ed1i \u0111\u1ea5t ng\u1eafn nh\u1ea5t c\u00f3 th\u1ec3 v\u1edbi s\u1ed1 l\u01b0\u1ee3ng u\u1ed1n cong t\u1ed1i thi\u1ec3u. Chi\u1ec1u d\u00e0i d\u00e2y n\u1ed1i \u0111\u1ea5t \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7.<\/li>\n<li><strong>Ph\u1ed1i h\u1ee3p gi\u1eefa c\u00e1c lo\u1ea1i SPD:<\/strong> Khi s\u1eed d\u1ee5ng nhi\u1ec1u giai \u0111o\u1ea1n b\u1ea3o v\u1ec7, h\u00e3y \u0111\u1ea3m b\u1ea3o ph\u1ed1i h\u1ee3p th\u00edch h\u1ee3p \u0111\u1ec3 ng\u0103n m\u1ed9t thi\u1ebft b\u1ecb b\u1ecb qu\u00e1 t\u1ea3i.<\/li>\n<li><strong>Gi\u00e1m s\u00e1t v\u00e0 b\u1ea3o tr\u00ec:<\/strong> L\u1eafp \u0111\u1eb7t SPD c\u00f3 ch\u1ec9 b\u00e1o tr\u1ef1c quan ho\u1eb7c kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t t\u1eeb xa. Ki\u1ec3m tra th\u01b0\u1eddng xuy\u00ean \u0111\u1ea3m b\u1ea3o ti\u1ebfp t\u1ee5c b\u1ea3o v\u1ec7.<\/li>\n<\/ol>\n<p>dr. tr\u01b0\u1edbc <strong>C\u1ea2NH B\u00c1O AN TO\u00c0N:<\/strong> Vi\u1ec7c l\u1eafp \u0111\u1eb7t SPD ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi th\u1ee3 \u0111i\u1ec7n c\u00f3 tr\u00ecnh \u0111\u1ed9 v\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m tra b\u1edfi ch\u00ednh quy\u1ec1n \u0111\u1ecba ph\u01b0\u01a1ng. L\u00e0m vi\u1ec7c v\u1edbi thi\u1ebft b\u1ecb d\u1ecbch v\u1ee5 \u0111i\u1ec7n g\u00e2y ra c\u00e1c nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt v\u00e0 h\u1ed3 quang \u0111i\u1ec7n nghi\u00eam tr\u1ecdng.<\/p>\n<h2>Khi n\u00e0o c\u1ea7n thay th\u1ebf thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t lan truy\u1ec1n c\u1ee7a b\u1ea1n<\/h2>\n<h3>Gi\u00e1m s\u00e1t tr\u1ea1ng th\u00e1i tr\u1ef1c quan<\/h3>\n<p>SPD ch\u1ea5t l\u01b0\u1ee3ng hi\u1ec7n \u0111\u1ea1i bao g\u1ed3m c\u00e1c ch\u1ec9 b\u00e1o tr\u1ef1c quan hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng:<\/p>\n<ul>\n<li><strong>\u0110\u00e8n LED xanh:<\/strong> Thi\u1ebft b\u1ecb \u0111ang ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng v\u00e0 cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7<\/li>\n<li><strong>\u0110\u00e8n LED \u0111\u1ecf ho\u1eb7c t\u1eaft:<\/strong> MOVs b\u1ecb h\u1ecfng, thi\u1ebft b\u1ecb c\u1ea7n \u0111\u01b0\u1ee3c thay th\u1ebf ngay l\u1eadp t\u1ee9c<\/li>\n<li><strong>Nh\u1ea5p nh\u00e1y:<\/strong> M\u1ed9t s\u1ed1 ki\u1ec3u m\u00e1y cho bi\u1ebft tr\u1ea1ng th\u00e1i b\u1ecb suy gi\u1ea3m nh\u01b0ng v\u1eabn ho\u1ea1t \u0111\u1ed9ng<\/li>\n<\/ul>\n<h3>Ch\u1ec9 s\u1ed1 thay th\u1ebf<\/h3>\n<ol>\n<li><strong>Ch\u1ec9 b\u00e1o cho th\u1ea5y l\u1ed7i:<\/strong> N\u1ebfu \u0111\u00e8n LED \u201c\u0110\u01b0\u1ee3c b\u1ea3o v\u1ec7\u201d t\u1eaft ho\u1eb7c m\u00e0u \u0111\u1ecf, c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong \u0111\u00e3 b\u1ecb h\u1ecfng. Thay th\u1ebf ngay l\u1eadp t\u1ee9c.<\/li>\n<li><strong>Sau c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u1ed9t bi\u1ebfn l\u1edbn:<\/strong> Ngay c\u1ea3 khi ch\u1ec9 b\u00e1o v\u1eabn c\u00f3 m\u00e0u xanh l\u1ee5c, m\u1ed9t s\u1ef1 ki\u1ec7n l\u1edbn (nh\u01b0 s\u00e9t \u0111\u00e1nh g\u1ea7n \u0111\u00f3) c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng c\u00e1c th\u00e0nh ph\u1ea7n b\u00ean trong.<\/li>\n<li><strong>Thay th\u1ebf theo th\u1eddi gian:<\/strong> \u1ede nh\u1eefng khu v\u1ef1c c\u00f3 nhi\u1ec1u s\u00e9t ho\u1eb7c m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p c\u00f3 c\u00e1c xung \u0111i\u1ec7n b\u00ean trong th\u01b0\u1eddng xuy\u00ean, h\u00e3y thay th\u1ebf SPD sau m\u1ed7i 3-5 n\u0103m nh\u01b0 m\u1ed9t bi\u1ec7n ph\u00e1p b\u1ea3o tr\u00ec ph\u00f2ng ng\u1eeba.<\/li>\n<li><strong>H\u01b0 h\u1ecfng v\u1eadt l\u00fd:<\/strong> B\u1ea5t k\u1ef3 d\u1ea5u hi\u1ec7u n\u00e0o c\u1ee7a qu\u00e1 nhi\u1ec7t, \u0111\u1ed5i m\u00e0u, m\u00f9i kh\u00e9t ho\u1eb7c bi\u1ebfn d\u1ea1ng v\u1eadt l\u00fd \u0111\u1ec1u cho th\u1ea5y c\u1ea7n ph\u1ea3i thay th\u1ebf ngay l\u1eadp t\u1ee9c.<\/li>\n<\/ol>\n<h3>C\u00e2n nh\u1eafc v\u1ec1 tu\u1ed5i th\u1ecd c\u1ee7a SPD<\/h3>\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px; border-color: #ddd;\" border=\"1\">\n<thead style=\"background-color: #f2f2f2;\">\n<tr>\n<th style=\"padding: 10px; text-align: left;\">Lo\u1ea1i SPD<\/th>\n<th style=\"padding: 10px; text-align: left;\">Tu\u1ed5i th\u1ecd d\u1ef1 ki\u1ebfn<\/th>\n<th style=\"padding: 10px; text-align: left;\">K\u00edch ho\u1ea1t thay th\u1ebf<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\"><strong>Lo\u1ea1i 2 cho to\u00e0n b\u1ed9 nh\u00e0<\/strong><\/td>\n<td style=\"padding: 10px;\">T\u1eeb 5 \u0111\u1ebfn 10 n\u0103m<\/td>\n<td style=\"padding: 10px;\">L\u1ed7i ch\u1ec9 b\u00e1o, s\u1ef1 ki\u1ec7n l\u1edbn, d\u1ef1a tr\u00ean th\u1eddi gian<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Lo\u1ea1i 3 t\u1ea1i \u0111i\u1ec3m s\u1eed d\u1ee5ng<\/strong><\/td>\n<td style=\"padding: 10px;\">3-5 n\u0103m<\/td>\n<td style=\"padding: 10px;\">L\u1ed7i ch\u1ec9 b\u00e1o, h\u01b0 h\u1ecfng v\u1eadt l\u00fd<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>M\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p c\u00f3 \u0111\u1ed9 ph\u01a1i nhi\u1ec5m cao<\/strong><\/td>\n<td style=\"padding: 10px;\">2-5 n\u0103m<\/td>\n<td style=\"padding: 10px;\">L\u1ecbch tr\u00ecnh thay th\u1ebf ph\u00f2ng ng\u1eeba th\u01b0\u1eddng xuy\u00ean<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>T\u00ecm hi\u1ec3u th\u00eam v\u1ec1 <a href=\"https:\/\/test.viox.com\/vi\/surge-protective-device-lifespan-mov-aging-guide\/\">C\u01a1 ch\u1ebf l\u00e3o h\u00f3a SPD v\u00e0 chi\u1ebfn l\u01b0\u1ee3c thay th\u1ebf<\/a>.<\/p>\n<h2>L\u1ef1a ch\u1ecdn SPD ph\u00f9 h\u1ee3p: Khung quy\u1ebft \u0111\u1ecbnh c\u1ee7a chuy\u00ean gia<\/h2>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 l\u1ef1a ch\u1ecdn thi\u1ebft y\u1ebfu<\/h3>\n<ol>\n<li><strong>\u0110i\u1ec7n \u00e1p v\u00e0 c\u1ea5u h\u00ecnh h\u1ec7 th\u1ed1ng:<\/strong> \u0110\u1ea3m b\u1ea3o \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c c\u1ee7a SPD ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh c\u1ee7a h\u1ec7 th\u1ed1ng (120V, 208V, 240V, 277V, 480V, v.v.)<\/li>\n<li><strong>M\u00f4i tr\u01b0\u1eddng xung d\u1ef1 ki\u1ebfn:<\/strong> M\u1ee9c \u0111\u1ed9 ti\u1ebfp x\u00fac v\u1edbi s\u00e9t, \u0111\u1ed9 tin c\u1eady c\u1ee7a \u0111i\u1ec7n l\u01b0\u1edbi, \u0111\u1eb7c t\u00ednh t\u1ea3i b\u00ean trong<\/li>\n<li><strong>Gi\u00e1 tr\u1ecb thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7:<\/strong> Thi\u1ebft b\u1ecb c\u00f3 gi\u00e1 tr\u1ecb cao c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 c\u1ea5p cao h\u01a1n<\/li>\n<li><strong>Y\u00eau c\u1ea7u tu\u00e2n th\u1ee7:<\/strong> X\u00e1c minh ch\u1ee9ng nh\u1eadn UL 1449 ho\u1eb7c IEC 61643-11, y\u00eau c\u1ea7u b\u1ea3o hi\u1ec3m, quy \u0111\u1ecbnh \u0111\u1ecba ph\u01b0\u01a1ng<\/li>\n<li><strong>V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t:<\/strong> L\u1ef1a ch\u1ecdn lo\u1ea1i d\u1ef1a tr\u00ean <a href=\"https:\/\/test.viox.com\/vi\/where-to-install-spds-electrical-panel-guide\/\">v\u1ecb tr\u00ed SPD t\u1ed1i \u01b0u<\/a><\/li>\n<li><strong>Y\u00eau c\u1ea7u gi\u00e1m s\u00e1t:<\/strong> Gi\u00e1m s\u00e1t t\u1eeb xa cho c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng, ch\u1ec9 b\u00e1o tr\u1ef1c quan cho c\u00e1c c\u00e0i \u0111\u1eb7t ti\u00eau chu\u1ea9n<\/li>\n<\/ol>\n<h3>H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn nhanh<\/h3>\n<p><strong>\u0110\u1ec3 b\u1ea3o v\u1ec7 b\u1ea3ng \u0111i\u1ec7n ch\u00ednh d\u00e2n d\u1ee5ng:<\/strong><\/p>\n<ul>\n<li>SPD lo\u1ea1i 2, c\u00f4ng ngh\u1ec7 MOV<\/li>\n<li>D\u00f2ng \u0111i\u1ec7n xung 40-80 kA<\/li>\n<li>VPR 600V ho\u1eb7c th\u1ea5p h\u01a1n<\/li>\n<li>\u0110\u01b0\u1ee3c li\u1ec7t k\u00ea theo UL 1449<\/li>\n<li>Ch\u1ec9 b\u00e1o tr\u1ea1ng th\u00e1i tr\u1ef1c quan<\/li>\n<\/ul>\n<p><strong>\u0110\u1ed1i v\u1edbi t\u1ee7 \u0111i\u1ec7n ph\u00e2n ph\u1ed1i th\u01b0\u01a1ng m\u1ea1i:<\/strong><\/p>\n<ul>\n<li>SPD lo\u1ea1i 2, c\u00f4ng ngh\u1ec7 MOV ho\u1eb7c hybrid<\/li>\n<li>D\u00f2ng \u0111i\u1ec7n xung 80-160 kA<\/li>\n<li>\u01afu ti\u00ean c\u00e1c module c\u00f3 th\u1ec3 thay th\u1ebf<\/li>\n<li>Kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t t\u1eeb xa<\/li>\n<li>Ph\u1ed1i h\u1ee3p v\u1edbi Lo\u1ea1i 1 t\u1ea1i \u0111\u1ea7u v\u00e0o d\u1ecbch v\u1ee5 n\u1ebfu c\u1ea7n<\/li>\n<\/ul>\n<p><strong>\u0110\u1ed1i v\u1edbi t\u1ea3i tr\u1ecdng quan tr\u1ecdng trong c\u00f4ng nghi\u1ec7p:<\/strong><\/p>\n<ul>\n<li>B\u1ea3o v\u1ec7 ph\u1ed1i h\u1ee3p Lo\u1ea1i 1 + Lo\u1ea1i 2<\/li>\n<li>D\u00f2ng \u0111i\u1ec7n xung 100+ kA<\/li>\n<li>Thi\u1ebft k\u1ebf an to\u00e0n v\u1edbi ng\u1eaft k\u1ebft n\u1ed1i nhi\u1ec7t<\/li>\n<li>T\u00edch h\u1ee3p gi\u00e1m s\u00e1t m\u1ea1ng<\/li>\n<li>B\u1ea3o v\u1ec7 d\u1ef1 ph\u00f2ng cho c\u00e1c m\u1ea1ch quan tr\u1ecdng<\/li>\n<\/ul>\n<p>Hi\u1ec3u s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa <a href=\"https:\/\/test.viox.com\/vi\/tvss-vs-spd-ul-1449-standards-guide\/\">Thu\u1eadt ng\u1eef TVSS v\u00e0 SPD theo ti\u00eau chu\u1ea9n UL 1449<\/a> gi\u00fap \u0111\u1ea3m b\u1ea3o \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt ph\u00f9 h\u1ee3p.<\/p>\n<h2>Nh\u1eefng C\u00e2u H\u1ecfi Th\u01b0\u1eddng<\/h2>\n<p><strong>\u0110i\u1ec1u g\u00ec l\u00e0m cho SPD kh\u00e1c bi\u1ec7t so v\u1edbi m\u1ed9t \u1ed5 c\u1eafm \u0111i\u1ec7n th\u00f4ng th\u01b0\u1eddng?<\/strong><br \/>\nM\u1ed9t SPD th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 b\u1ea3o v\u1ec7 ch\u1ed1ng xung v\u1edbi ch\u1ee9ng nh\u1eadn UL 1449, \u0111i\u1ec7n \u00e1p k\u1eb9p ph\u00f9 h\u1ee3p v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu d\u00f2ng xung \u0111\u1ea7y \u0111\u1ee7. C\u00e1c \u1ed5 c\u1eafm \u0111i\u1ec7n c\u01a1 b\u1ea3n th\u01b0\u1eddng cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ch\u1ed1ng xung t\u1ed1i thi\u1ec3u ho\u1eb7c kh\u00f4ng c\u00f3\u2014ch\u00fang ch\u1ec9 l\u00e0 d\u00e2y n\u1ed1i d\u00e0i nhi\u1ec1u \u1ed5 c\u1eafm. H\u00e3y t\u00ecm danh s\u00e1ch UL 1449 v\u00e0 x\u1ebfp h\u1ea1ng xung c\u1ee5 th\u1ec3 (kA v\u00e0 joules) \u0111\u1ec3 x\u00e1c minh kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 th\u1ef1c s\u1ef1.<\/p>\n<p><strong>L\u00e0m sao \u0111\u1ec3 bi\u1ebft SPD c\u1ee7a t\u00f4i c\u00f3 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng kh\u00f4ng?<\/strong><br \/>\nH\u1ea7u h\u1ebft c\u00e1c SPD ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ec1u c\u00f3 \u0111\u00e8n LED hi\u1ec3n th\u1ecb tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng. \u0110\u00e8n xanh th\u01b0\u1eddng c\u00f3 ngh\u0129a l\u00e0 \u0111ang b\u1ea3o v\u1ec7, \u0111\u00e8n \u0111\u1ecf c\u00f3 ngh\u0129a l\u00e0 c\u1ea7n thay th\u1ebf. N\u1ebfu kh\u00f4ng c\u00f3 \u0111\u00e8n b\u00e1o, thi\u1ebft b\u1ecb n\u00ean \u0111\u01b0\u1ee3c ki\u1ec3m tra b\u1edfi th\u1ee3 \u0111i\u1ec7n c\u00f3 tr\u00ecnh \u0111\u1ed9 b\u1eb1ng thi\u1ebft b\u1ecb ki\u1ec3m tra ph\u00f9 h\u1ee3p. Kh\u00f4ng bao gi\u1edd cho r\u1eb1ng m\u1ed9t SPD c\u0169 v\u1eabn c\u00f2n ho\u1ea1t \u0111\u1ed9ng n\u1ebfu kh\u00f4ng c\u00f3 x\u00e1c minh.<\/p>\n<p><strong>T\u00f4i c\u00f3 th\u1ec3 t\u1ef1 l\u1eafp \u0111\u1eb7t SPD kh\u00f4ng?<\/strong><br \/>\nSPD Lo\u1ea1i 3 (\u1ed5 c\u1eafm ch\u1ed1ng s\u00e9t lan truy\u1ec1n) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t b\u1edfi ch\u1ee7 nh\u00e0. Tuy nhi\u00ean, thi\u1ebft b\u1ecb Lo\u1ea1i 1 v\u00e0 Lo\u1ea1i 2 \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t t\u1ea1i t\u1ee7 \u0111i\u1ec7n y\u00eau c\u1ea7u ph\u1ea3i do th\u1ee3 \u0111i\u1ec7n c\u00f3 gi\u1ea5y ph\u00e9p th\u1ef1c hi\u1ec7n do c\u00e1c y\u00eau c\u1ea7u c\u1ee7a quy \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n, k\u1ef9 thu\u1eadt n\u1ed1i \u0111\u1ea5t ph\u00f9 h\u1ee3p v\u00e0 c\u00e1c c\u00e2n nh\u1eafc v\u1ec1 an to\u00e0n khi l\u00e0m vi\u1ec7c v\u1edbi thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/p>\n<p><strong>T\u00f4i c\u1ea7n SPD c\u1ee1 n\u00e0o cho ng\u00f4i nh\u00e0 c\u1ee7a m\u00ecnh?<\/strong><br \/>\n\u0110\u1ec3 b\u1ea3o v\u1ec7 to\u00e0n b\u1ed9 ng\u00f4i nh\u00e0, SPD Lo\u1ea1i 2 v\u1edbi d\u00f2ng \u0111i\u1ec7n xung 40-80 kA th\u01b0\u1eddng l\u00e0 \u0111\u1ee7 cho c\u00e1c \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng. X\u1ebfp h\u1ea1ng c\u1ee5 th\u1ec3 ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ee9c \u0111\u1ed9 ti\u1ebfp x\u00fac v\u1edbi s\u00e9t t\u1ea1i v\u1ecb tr\u00ed c\u1ee7a b\u1ea1n, k\u00edch th\u01b0\u1edbc ng\u00f4i nh\u00e0 v\u00e0 gi\u00e1 tr\u1ecb thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i. Tham kh\u1ea3o \u00fd ki\u1ebfn c\u1ee7a th\u1ee3 \u0111i\u1ec7n c\u00f3 tr\u00ecnh \u0111\u1ed9 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n d\u1ef1a tr\u00ean h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u1ee7a b\u1ea1n.<\/p>\n<p><strong>C\u00f3 c\u1ea7n ph\u1ea3i thay th\u1ebf SPD sau s\u1ef1 c\u1ed1 t\u0103ng \u0111i\u1ec7n \u00e1p kh\u00f4ng?<\/strong><br \/>\nKh\u00f4ng nh\u1ea5t thi\u1ebft. C\u00e1c thi\u1ebft b\u1ecb ch\u1ed1ng s\u00e9t lan truy\u1ec1n (SPD) ch\u1ea5t l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd nhi\u1ec1u s\u1ef1 ki\u1ec7n xung \u0111i\u1ec7n \u00e1p. Tuy nhi\u00ean, b\u1ea1n n\u00ean ki\u1ec3m tra c\u00e1c ch\u1ec9 b\u00e1o tr\u1ea1ng th\u00e1i v\u00e0 ki\u1ec3m tra thi\u1ebft b\u1ecb sau b\u1ea5t k\u1ef3 s\u1ef1 ki\u1ec7n \u0111i\u1ec7n \u0111\u00e1ng k\u1ec3 n\u00e0o nh\u01b0 s\u00e9t \u0111\u00e1nh g\u1ea7n \u0111\u00f3. C\u00e1c thi\u1ebft b\u1ecb d\u1ef1a tr\u00ean MOV b\u1ecb suy gi\u1ea3m l\u0169y ti\u1ebfn, v\u00ec v\u1eady nhi\u1ec1u xung \u0111i\u1ec7n \u00e1p v\u1eeba ph\u1ea3i c\u00f3 th\u1ec3 cu\u1ed1i c\u00f9ng c\u1ea7n ph\u1ea3i thay th\u1ebf ngay c\u1ea3 khi kh\u00f4ng c\u00f3 s\u1ef1 ki\u1ec7n \u0111\u01a1n l\u1ebb n\u00e0o g\u00e2y ra h\u1ecfng h\u00f3c ngay l\u1eadp t\u1ee9c.<\/p>\n<p><strong>Nh\u1eefng quy \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n n\u00e0o \u00e1p d\u1ee5ng cho vi\u1ec7c l\u1eafp \u0111\u1eb7t SPD?<\/strong><br \/>\n\u0110i\u1ec1u 285 c\u1ee7a B\u1ed9 lu\u1eadt \u0110i\u1ec7n Qu\u1ed1c gia Hoa K\u1ef3 (NEC) quy \u0111\u1ecbnh v\u1ec1 vi\u1ec7c l\u1eafp \u0111\u1eb7t SPD t\u1ea1i Hoa K\u1ef3. Ti\u00eau chu\u1ea9n IEC 61643 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u00ean ph\u1ea1m vi qu\u1ed1c t\u1ebf. C\u00e1c quy \u0111\u1ecbnh c\u1ee7a \u0111\u1ecba ph\u01b0\u01a1ng c\u00f3 th\u1ec3 c\u00f3 th\u00eam c\u00e1c y\u00eau c\u1ea7u b\u1ed5 sung. Lu\u00f4n x\u00e1c minh c\u00e1c y\u00eau c\u1ea7u hi\u1ec7n h\u00e0nh c\u1ee7a quy \u0111\u1ecbnh v\u1edbi c\u01a1 quan \u0111i\u1ec7n l\u1ef1c \u0111\u1ecba ph\u01b0\u01a1ng v\u00e0 \u0111\u1ea3m b\u1ea3o vi\u1ec7c l\u1eafp \u0111\u1eb7t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi c\u00e1c chuy\u00ean gia \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e9p.<\/p>\n<h2>K\u1ebft lu\u1eadn: B\u1ea3o v\u1ec7 kho\u1ea3n \u0111\u1ea7u t\u01b0 \u0111i\u1ec7n c\u1ee7a b\u1ea1n<\/h2>\n<p>Thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ch\u1ed1ng xung mang l\u1ea1i l\u1ee3i t\u1ee9c \u0111\u1ea7u t\u01b0 kh\u00f4ng c\u00e2n x\u1ee9ng: chi ph\u00ed khi\u00eam t\u1ed1n cho vi\u1ec7c l\u1eafp \u0111\u1eb7t SPD chuy\u00ean nghi\u1ec7p c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 h\u00e0ng ch\u1ee5c ngh\u00ecn \u0111\u00f4 la thi\u1ebft b\u1ecb v\u00e0 ng\u0103n ng\u1eeba th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng t\u1ed1n k\u00e9m. Vi\u1ec7c thay th\u1ebf HVAC tr\u1ecb gi\u00e1 $45.000 c\u1ee7a ng\u01b0\u1eddi qu\u1ea3n l\u00fd c\u01a1 s\u1edf \u1edf Texas c\u00f3 th\u1ec3 \u0111\u00e3 \u0111\u01b0\u1ee3c ng\u0103n ch\u1eb7n b\u1eb1ng vi\u1ec7c l\u1eafp \u0111\u1eb7t SPD to\u00e0n b\u1ed9 ng\u00f4i nh\u00e0 tr\u1ecb gi\u00e1 $500.<\/p>\n<p>Cho d\u00f9 s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 MOV, GDT hay TVS, SPD hi\u1ec7n \u0111\u1ea1i cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh, hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed khi \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn v\u00e0 l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch. B\u1eb1ng c\u00e1ch hi\u1ec3u ba lo\u1ea1i SPD (Lo\u1ea1i 1, 2 v\u00e0 3), c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u00ednh (\u0111i\u1ec7n \u00e1p k\u1eb9p, d\u00f2ng \u0111i\u1ec7n xung, MCOV) v\u00e0 s\u1eed d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 theo l\u1edbp, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o c\u01a1 s\u1edf c\u1ee7a m\u00ecnh c\u00f3 kh\u1ea3 n\u0103ng ph\u1ee5c h\u1ed3i tr\u01b0\u1edbc c\u00e1c qu\u00e1 tr\u00ecnh chuy\u1ec3n m\u1ea1ch \u0111i\u1ec7n kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi c\u1ee7a l\u01b0\u1edbi \u0111i\u1ec7n hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p><strong>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh \u0111\u1ec3 b\u1ea3o v\u1ec7 ch\u1ed1ng xung hi\u1ec7u qu\u1ea3:<\/strong><\/p>\n<ul>\n<li>Th\u1ef1c hi\u1ec7n b\u1ea3o v\u1ec7 \u0111a c\u1ea5p ph\u1ed1i h\u1ee3p (to\u00e0n b\u1ed9 t\u00f2a nh\u00e0 + \u0111i\u1ec3m s\u1eed d\u1ee5ng)<\/li>\n<li>Ch\u1ecdn SPD d\u1ef1a tr\u00ean c\u00e1c y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, kh\u00f4ng ch\u1ec9 gi\u00e1 th\u1ea5p nh\u1ea5t<\/li>\n<li>\u0110\u1ea3m b\u1ea3o l\u1eafp \u0111\u1eb7t \u0111\u00fang c\u00e1ch b\u1edfi th\u1ee3 \u0111i\u1ec7n c\u00f3 tr\u00ecnh \u0111\u1ed9 tu\u00e2n theo \u0110i\u1ec1u 285 c\u1ee7a NEC<\/li>\n<li>Theo d\u00f5i c\u00e1c ch\u1ec9 b\u00e1o tr\u1ea1ng th\u00e1i SPD v\u00e0 thay th\u1ebf ch\u1ee7 \u0111\u1ed9ng<\/li>\n<li>Ghi l\u1ea1i c\u00e1c c\u00e0i \u0111\u1eb7t SPD cho h\u1ed3 s\u01a1 b\u1ea3o hi\u1ec3m v\u00e0 b\u1ea3o tr\u00ec<\/li>\n<\/ul>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p v\u00e0 t\u00f2a nh\u00e0 th\u01b0\u01a1ng m\u1ea1i, b\u1ea3o v\u1ec7 ch\u1ed1ng xung kh\u00f4ng ph\u1ea3i l\u00e0 t\u00f9y ch\u1ecdn\u2014\u0111\u00f3 l\u00e0 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng thi\u1ebft y\u1ebfu t\u1ef1 tr\u1ea3 ti\u1ec1n cho m\u00ecnh ngay l\u1ea7n \u0111\u1ea7u ti\u00ean ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb. Trong c\u00e1c \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng, SPD mang l\u1ea1i s\u1ef1 an t\u00e2m r\u1eb1ng h\u1ec7 th\u1ed1ng \u0111i\u1ec7n v\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i trong nh\u00e0 b\u1ea1n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 kh\u1ecfi c\u00e1c s\u1ef1 ki\u1ec7n chuy\u1ec3n m\u1ea1ch kh\u00f4ng th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc.<\/p>\n<p>C\u00f4ng ngh\u1ec7 \u0111\u00e3 tr\u01b0\u1edfng th\u00e0nh, c\u00e1c ti\u00eau chu\u1ea9n \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp t\u1ed1t v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh. C\u00e2u h\u1ecfi duy nh\u1ea5t l\u00e0 b\u1ea1n s\u1ebd l\u1eafp \u0111\u1eb7t h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 ch\u1ed1ng xung to\u00e0n di\u1ec7n tr\u01b0\u1edbc hay sau khi g\u1eb7p ph\u1ea3i s\u1ef1 c\u1ed1 thi\u1ebft b\u1ecb t\u1ed1n k\u00e9m.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>A surge protection device (SPD) is an electrical safety component that protects equipment and electrical systems from voltage spikes caused by lightning, power grid switching, or electrical faults. SPDs automatically divert excess electrical energy to ground, preventing damage to sensitive electronics, appliances, and electrical infrastructure. Understanding SPD technology, proper selection criteria, and installation requirements is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":17670,"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-17669","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\/17669","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=17669"}],"version-history":[{"count":4,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/17669\/revisions"}],"predecessor-version":[{"id":21163,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/17669\/revisions\/21163"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/17670"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=17669"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=17669"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=17669"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}