{"id":2121,"date":"2024-09-01T15:32:00","date_gmt":"2024-09-01T13:32:00","guid":{"rendered":"https:\/\/gezhi-tech.com\/?p=2121"},"modified":"2025-09-27T17:50:23","modified_gmt":"2025-09-27T15:50:23","slug":"clause-3-how-to-understand-the-definition-of-creepage-distance","status":"publish","type":"post","link":"https:\/\/gezhi-tech.com\/vi\/clause-3-how-to-understand-the-definition-of-creepage-distance\/","title":{"rendered":"Kho\u1ea3n 3 \u2013 C\u00e1ch hi\u1ec3u \u0111\u1ecbnh ngh\u0129a \u201ckho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2\u201d"},"content":{"rendered":"kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2: kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t d\u1ecdc theo b\u1ec1 m\u1eb7t c\u00e1ch \u0111i\u1ec7n gi\u1eefa hai b\u1ed9 ph\u1eadn d\u1eabn \u0111i\u1ec7n ho\u1eb7c gi\u1eefa b\u1ed9 ph\u1eadn d\u1eabn \u0111i\u1ec7n v\u00e0 b\u1ec1 m\u1eb7t ch\u1ea1m t\u1edbi \u0111\u01b0\u1ee3c.<br>\n<br>\n\u0110i\u1ec7n t\u00edch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n theo h\u01b0\u1edbng c\u00f3 h\u01b0\u1edbng trong kh\u00f4ng kh\u00ed, do \u0111\u00f3 t\u1ea1o th\u00e0nh d\u00f2ng \u0111i\u1ec7n. \u0110\u00e2y l\u00e0 \u00fd ngh\u0129a c\u1ee7a s\u1ef1 gi\u1ea3i t\u1ecfa. Tr\u00ean th\u1ef1c t\u1ebf, \u0111i\u1ec7n t\u00edch c\u00f2n c\u00f3 th\u1ec3 truy\u1ec1n qua ch\u00ednh v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n v\u00ec kh\u00f4ng c\u00f3 v\u1eadt li\u1ec7u n\u00e0o c\u00e1ch \u0111i\u1ec7n ho\u00e0n to\u00e0n. S\u1ef1 ch\u00eanh l\u1ec7ch d\u00f2ng \u0111i\u1ec7n h\u00ecnh th\u00e0nh gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c khi \u0111\u1eb7t hai \u0111i\u1ec7n c\u1ef1c c\u00f3 \u0111i\u1ec7n th\u1ebf kh\u00e1c nhau v\u00e0o hai m\u1eb7t c\u1ee7a t\u1edd gi\u1ea5y in A4 th\u00f4ng th\u01b0\u1eddng v\u00e0 v\u00e0o hai m\u1eb7t c\u1ee7a v\u1eadt li\u1ec7u cao su c\u00f3 r\u00e3nh d\u00e0y 2mm l\u00e0 r\u1ea5t l\u1edbn. \u0110i\u1ec7n t\u00edch c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n theo h\u01b0\u1edbng d\u1ecdc theo b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n. Hi\u1ec7u \u1ee9ng lan truy\u1ec1n \u0111i\u1ec7n t\u00edch tr\u00ean b\u1ec1 m\u1eb7t c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau c\u0169ng kh\u00e1c nhau. N\u1ebfu c\u00e1c ch\u1ea5t kh\u00e1c (ch\u1ea5t \u00f4 nhi\u1ec5m) b\u00e1m v\u00e0o b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n th\u00ec hi\u1ec7u \u1ee9ng truy\u1ec1n \u0111i\u1ec7n t\u00edch c\u0169ng kh\u00e1c nhau. \u0110\u1ec3 ng\u0103n \u0111i\u1ec7n t\u00edch lan truy\u1ec1n d\u1ecdc theo b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n v\u00e0 g\u00e2y \u0111i\u1ec7n gi\u1eadt, \u0111\u1ecbnh ngh\u0129a v\u00e0 y\u00eau c\u1ea7u v\u1ec1 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 \u0111\u01b0\u1ee3c \u0111\u01b0a ra. S\u1ef1 truy\u1ec1n \u0111i\u1ec7n t\u00edch qua th\u00e2n v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n t\u1ea1o ra c\u00e1c y\u00eau c\u1ea7u c\u00e1ch \u0111i\u1ec7n r\u1eafn \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp trong \u0111o\u1ea1n \u0111\u1ea7u ti\u00ean c\u1ee7a \u0111i\u1ec1u 29. \u0110i\u1ec1u 29.2 \u0111\u01b0a ra c\u00e1c y\u00eau c\u1ea7u v\u1ec1 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2.<br>\n<figure class=\"wp-block-image size-large is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"636\" height=\"1024\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1-636x1024.png\" alt=\"\" class=\"wp-image-2114\" style=\"width:658px;height:auto\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1-636x1024.png 636w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1-186x300.png 186w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1-768x1236.png 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance-and-creepage-1.png 840w\" sizes=\"auto, (max-width: 636px) 100vw, 636px\" \/><br>\n<\/figure><br>\n\u0110\u1ecbnh ngh\u0129a v\u1ec1 kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2 \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb ti\u00eau chu\u1ea9n IEC 60664-1:2020. V\u00ec c\u1ea7n gi\u1ea3i th\u00edch kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2 n\u00ean ch\u00fang ta ph\u1ea3i th\u1ec3 hi\u1ec7n c\u00e1c h\u00ecnh t\u1eeb h\u00ecnh 4 \u0111\u1ebfn h\u00ecnh 14 trong ti\u00eau chu\u1ea9n IEC 60664-1:2020. \u1ede \u0111\u00e2y, b\u1ea1n \u0111\u1ecdc c\u1ea7n c\u00e2n nh\u1eafc k\u1ef9 c\u00e1ch x\u00e1c \u0111\u1ecbnh \u201cX mm\u201d. N\u1ebfu c\u00f3 m\u1ed9t r\u00e3nh tr\u00ean \u0111\u01b0\u1eddng t\u1ea1o th\u00e0nh kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2 th\u00ec s\u1ebd x\u1ea3y ra t\u00ecnh tr\u1ea1ng r\u00e3nh c\u1ea7u. C\u00e1 nh\u00e2n t\u00f4i ngh\u0129 r\u1eb1ng l\u00fd do ch\u00ednh c\u1ee7a vi\u1ec7c b\u1eafc c\u1ea7u l\u00e0 do s\u1ef1 l\u1eafng \u0111\u1ecdng c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m trong r\u00e3nh. Nh\u1eefng ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m n\u00e0y ch\u1ee7 y\u1ebfu l\u00e0 b\u1ee5i v\u00e0 b\u1ee5i \u1ea9m c\u00f3 t\u00ednh d\u1eabn \u0111i\u1ec7n cao h\u01a1n. V\u00ec v\u1eady, sao ch\u00e9p v\u0103n b\u1ea3n g\u1ed1c c\u1ee7a ti\u00eau chu\u1ea9n, c\u00f3 ba gi\u1ea3 \u0111\u1ecbnh sau:<br>\u2013 Khi kho\u1ea3ng c\u00e1ch qua r\u00e3nh nh\u1ecf h\u01a1n chi\u1ec1u r\u1ed9ng X quy \u0111\u1ecbnh (xem B\u1ea3ng 1), chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 \u0111\u01b0\u1ee3c \u0111o tr\u1ef1c ti\u1ebfp qua r\u00e3nh v\u00e0 kh\u00f4ng t\u00ednh \u0111\u1ebfn \u0111\u01b0\u1eddng vi\u1ec1n c\u1ee7a r\u00e3nh (xem H\u00ecnh 4).<br>\u2013 trong \u0111\u00f3 kho\u1ea3ng c\u00e1ch qua r\u00e3nh b\u1eb1ng ho\u1eb7c l\u1edbn h\u01a1n chi\u1ec1u r\u1ed9ng X quy \u0111\u1ecbnh (xem B\u1ea3ng 1), chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 \u0111\u01b0\u1ee3c \u0111o d\u1ecdc theo c\u00e1c \u0111\u01b0\u1eddng vi\u1ec1n c\u1ee7a r\u00e3nh (xem H\u00ecnh 5);<br>\u2013 b\u1ea5t k\u1ef3 ch\u1ed7 l\u00f5m n\u00e0o \u0111\u01b0\u1ee3c coi l\u00e0 \u0111\u01b0\u1ee3c b\u1eafc c\u1ea7u b\u1eb1ng m\u1ed9t li\u00ean k\u1ebft c\u00e1ch \u0111i\u1ec7n c\u00f3 chi\u1ec1u d\u00e0i b\u1eb1ng chi\u1ec1u r\u1ed9ng X quy \u0111\u1ecbnh v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf v\u1ecb tr\u00ed b\u1ea5t l\u1ee3i nh\u1ea5t (xem H\u00ecnh 6);<br>\u2013 khe h\u1edf kh\u00f4ng kh\u00ed v\u00e0 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 \u0111o \u0111\u01b0\u1ee3c gi\u1eefa c\u00e1c b\u1ed9 ph\u1eadn c\u00f3 th\u1ec3 \u0111\u1ea3m nh\u1eadn c\u00e1c v\u1ecb tr\u00ed kh\u00e1c nhau trong m\u1ed1i quan h\u1ec7 v\u1edbi nhau, \u0111\u01b0\u1ee3c \u0111o khi c\u00e1c b\u1ed9 ph\u1eadn n\u00e0y \u1edf v\u1ecb tr\u00ed b\u1ea5t l\u1ee3i nh\u1ea5t c\u1ee7a ch\u00fang.<br>\n<figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"245\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-4-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2158\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-4-of-IEC-60664-1-only.png 648w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-4-of-IEC-60664-1-only-300x113.png 300w\" sizes=\"auto, (max-width: 648px) 100vw, 648px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 4 \u2013 B\u00ean kia r\u00e3nh<\/strong><\/figcaption><\/figure><br>\n\u0110i\u1ec1u ki\u1ec7n: \u0110\u01b0\u1eddng \u0111i \u0111ang xem x\u00e9t bao g\u1ed3m r\u00e3nh c\u00f3 c\u00e1c c\u1ea1nh song song ho\u1eb7c h\u1ed9i t\u1ee5 c\u00f3 \u0111\u1ed9 s\u00e2u b\u1ea5t k\u1ef3 v\u1edbi chi\u1ec1u r\u1ed9ng nh\u1ecf h\u01a1n X mm.<br>Quy t\u1eafc: Khe h\u1edf v\u00e0 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 \u0111\u01b0\u1ee3c \u0111o tr\u1ef1c ti\u1ebfp qua r\u00e3nh nh\u01b0 h\u00ecnh minh h\u1ecda.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"633\" height=\"242\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-5-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2159\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-5-of-IEC-60664-1-only.png 633w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-5-of-IEC-60664-1-only-300x115.png 300w\" sizes=\"auto, (max-width: 633px) 100vw, 633px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 5 &#8211; \u0110\u01b0\u1eddng vi\u1ec1n c\u1ee7a r\u00e3nh<\/strong><\/figcaption><\/figure><br>\n\u0110i\u1ec1u ki\u1ec7n: \u0110\u01b0\u1eddng \u0111i \u0111ang x\u00e9t bao g\u1ed3m m\u1ed9t r\u00e3nh c\u00f3 c\u1ea1nh song song c\u00f3 \u0111\u1ed9 s\u00e2u b\u1ea5t k\u1ef3 v\u00e0 b\u1eb1ng ho\u1eb7c l\u1edbn h\u01a1n X mm.<br>Quy t\u1eafc: Kho\u1ea3ng tr\u1ed1ng l\u00e0 kho\u1ea3ng c\u00e1ch &#8220;\u0111\u01b0\u1eddng ng\u1eafm&#8221;. \u0110\u01b0\u1eddng r\u00f2 \u0111i theo \u0111\u01b0\u1eddng vi\u1ec1n c\u1ee7a r\u00e3nh.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"713\" height=\"290\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-6-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2160\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-6-of-IEC-60664-1-only.png 713w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-6-of-IEC-60664-1-only-300x122.png 300w\" sizes=\"auto, (max-width: 713px) 100vw, 713px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 6 \u2013 \u0110\u01b0\u1eddng vi\u1ec1n c\u1ee7a r\u00e3nh c\u00f3 g\u00f3c<\/strong><\/figcaption><\/figure><br>\n\u0110i\u1ec1u ki\u1ec7n: \u0110\u01b0\u1eddng \u0111i \u0111ang x\u00e9t bao g\u1ed3m r\u00e3nh h\u00ecnh ch\u1eef V c\u00f3 chi\u1ec1u r\u1ed9ng l\u1edbn h\u01a1n X mm.<br>Quy t\u1eafc: Kho\u1ea3ng tr\u1ed1ng l\u00e0 kho\u1ea3ng c\u00e1ch &#8220;\u0111\u01b0\u1eddng ng\u1eafm&#8221;. \u0110\u01b0\u1eddng r\u00f2 \u0111i theo \u0111\u01b0\u1eddng vi\u1ec1n c\u1ee7a r\u00e3nh nh\u01b0ng che ph\u1ee7 \u0111\u00e1y r\u00e3nh b\u1eb1ng li\u00ean k\u1ebft c\u00e1ch \u0111i\u1ec7n X mm.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"637\" height=\"287\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-7-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2161\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-7-of-IEC-60664-1-only.png 637w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-7-of-IEC-60664-1-only-300x135.png 300w\" sizes=\"auto, (max-width: 637px) 100vw, 637px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 7 &#8211; \u0110\u01b0\u1eddng vi\u1ec1n c\u1ee7a x\u01b0\u01a1ng s\u01b0\u1eddn<\/strong><\/figcaption><\/figure><br>\n\u0110i\u1ec1u ki\u1ec7n: \u0110\u01b0\u1eddng \u0111i \u0111ang x\u00e9t c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng g\u00e2n.<br>Quy t\u1eafc: Kho\u1ea3ng tr\u1ed1ng l\u00e0 \u0111\u01b0\u1eddng d\u1eabn kh\u00ed tr\u1ef1c ti\u1ebfp ng\u1eafn nh\u1ea5t qua \u0111\u1ec9nh x\u01b0\u01a1ng s\u01b0\u1eddn. \u0110\u01b0\u1eddng r\u00f2 \u0111i theo \u0111\u01b0\u1eddng vi\u1ec1n c\u1ee7a s\u01b0\u1eddn.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"662\" height=\"377\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-8-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2162\" style=\"width:662px;height:auto\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-8-of-IEC-60664-1-only.png 662w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-8-of-IEC-60664-1-only-300x171.png 300w\" sizes=\"auto, (max-width: 662px) 100vw, 662px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 8 \u2013 M\u1ed1i n\u1ed1i kh\u00f4ng tr\u00e1t c\u00f3 r\u00e3nh nh\u1ecf h\u01a1n X<\/strong><\/figcaption><\/figure><br>\n\u0110i\u1ec1u ki\u1ec7n: \u0110\u01b0\u1eddng \u0111i \u0111ang \u0111\u01b0\u1ee3c xem x\u00e9t bao g\u1ed3m m\u1ed1i n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c g\u1eafn k\u00edn c\u00f3 c\u00e1c r\u00e3nh r\u1ed9ng nh\u1ecf h\u01a1n X mm \u1edf m\u1ed7i b\u00ean.<br>Quy t\u1eafc: Kho\u1ea3ng tr\u1ed1ng v\u00e0 \u0111\u01b0\u1eddng r\u00f2 l\u00e0 kho\u1ea3ng c\u00e1ch &#8220;\u0111\u01b0\u1eddng ng\u1eafm&#8221; \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"647\" height=\"375\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-9-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2163\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-9-of-IEC-60664-1-only.png 647w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-9-of-IEC-60664-1-only-300x174.png 300w\" sizes=\"auto, (max-width: 647px) 100vw, 647px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 9 \u2013 M\u1ed1i n\u1ed1i kh\u00f4ng g\u1eafn k\u00edn c\u00f3 r\u00e3nh b\u1eb1ng ho\u1eb7c l\u1edbn h\u01a1n X<\/strong><\/figcaption><\/figure><br>\n\u0110i\u1ec1u ki\u1ec7n: \u0110\u01b0\u1eddng \u0111i \u0111ang \u0111\u01b0\u1ee3c xem x\u00e9t bao g\u1ed3m m\u1ed9t m\u1ed1i n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c g\u1eafn k\u00edn c\u00f3 c\u00e1c r\u00e3nh r\u1ed9ng b\u1eb1ng ho\u1eb7c l\u1edbn h\u01a1n X mm \u1edf m\u1ed7i b\u00ean.<br>Quy t\u1eafc: Kho\u1ea3ng tr\u1ed1ng l\u00e0 kho\u1ea3ng c\u00e1ch &#8220;\u0111\u01b0\u1eddng ng\u1eafm&#8221;. \u0110\u01b0\u1eddng r\u00f2 \u0111i theo \u0111\u01b0\u1eddng vi\u1ec1n c\u1ee7a c\u00e1c r\u00e3nh.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"377\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-10-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2164\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-10-of-IEC-60664-1-only.png 648w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-10-of-IEC-60664-1-only-300x175.png 300w\" sizes=\"auto, (max-width: 648px) 100vw, 648px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 10 \u2013 M\u1ed1i n\u1ed1i kh\u00f4ng g\u1eafn xi m\u0103ng c\u00f3 r\u00e3nh m\u1ed9t b\u00ean nh\u1ecf h\u01a1n X<\/strong><\/figcaption><\/figure><br>\n\u0110i\u1ec1u ki\u1ec7n: \u0110\u01b0\u1eddng \u0111i \u0111ang \u0111\u01b0\u1ee3c xem x\u00e9t bao g\u1ed3m m\u1ed9t m\u1ed1i n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c g\u1eafn k\u00edn c\u00f3 r\u00e3nh \u1edf m\u1ed9t b\u00ean c\u00f3 chi\u1ec1u r\u1ed9ng nh\u1ecf h\u01a1n X mm v\u00e0 r\u00e3nh \u1edf ph\u00eda b\u00ean kia c\u00f3 chi\u1ec1u r\u1ed9ng b\u1eb1ng ho\u1eb7c l\u1edbn h\u01a1n X mm.<br>Quy t\u1eafc: Di\u1ec7n t\u00edch khe h\u1edf v\u00e0 \u0111\u01b0\u1eddng r\u00f2 nh\u01b0 h\u00ecnh minh h\u1ecda.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"662\" height=\"283\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-11-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2165\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-11-of-IEC-60664-1-only.png 662w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-11-of-IEC-60664-1-only-300x128.png 300w\" sizes=\"auto, (max-width: 662px) 100vw, 662px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 11 \u2013 Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2 v\u00e0 khe h\u1edf qua m\u1ed1i n\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c g\u1eafn k\u00edn<\/strong><\/figcaption><\/figure><br>\n\u0110i\u1ec1u ki\u1ec7n: Chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 qua m\u1ed1i n\u1ed1i kh\u00f4ng g\u1eafn k\u00edn nh\u1ecf h\u01a1n chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 qua m\u1ed1i n\u1ed1i<br>r\u00e0o ch\u1eafn nh\u01b0ng l\u1edbn h\u01a1n kho\u1ea3ng tr\u1ed1ng tr\u00ean \u0111\u1ec9nh r\u00e0o ch\u1eafn.<br>Quy t\u1eafc: Kho\u1ea3ng tr\u1ed1ng l\u00e0 \u0111\u01b0\u1eddng d\u1eabn kh\u00f4ng kh\u00ed tr\u1ef1c ti\u1ebfp ng\u1eafn nh\u1ea5t qua \u0111\u1ec9nh r\u00e0o ch\u1eafn.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"685\" height=\"306\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-12-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2155\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-12-of-IEC-60664-1-only.png 685w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-12-of-IEC-60664-1-only-300x134.png 300w\" sizes=\"auto, (max-width: 685px) 100vw, 685px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 12 \u2013 Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2 v\u00e0 khe h\u1edf \u0111\u1ebfn \u0111\u1ea7u v\u00edt l\u1edbn h\u01a1n X<\/strong><\/figcaption><\/figure><br>\nKho\u1ea3ng c\u00e1ch gi\u1eefa \u0111\u1ea7u v\u00edt v\u00e0 th\u00e0nh h\u1ed1c \u0111\u1ee7 r\u1ed9ng \u0111\u1ec3 t\u00ednh \u0111\u1ebfn.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"637\" height=\"288\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-13-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2156\" style=\"width:787px;height:auto\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-13-of-IEC-60664-1-only.png 637w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-13-of-IEC-60664-1-only-300x136.png 300w\" sizes=\"auto, (max-width: 637px) 100vw, 637px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 13 \u2013 Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2 v\u00e0 khe h\u1edf t\u1edbi \u0111\u1ea7u v\u00edt nh\u1ecf h\u01a1n X<\/strong><\/figcaption><\/figure><br>\nKho\u1ea3ng c\u00e1ch gi\u1eefa \u0111\u1ea7u v\u00edt v\u00e0 th\u00e0nh h\u1ed1c qu\u00e1 h\u1eb9p n\u00ean kh\u00f4ng th\u1ec3 t\u00ednh \u0111\u1ebfn.<br>\u0110o chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 t\u1eeb \u0111\u1ea7u v\u00edt \u0111\u1ebfn t\u01b0\u1eddng khi kho\u1ea3ng c\u00e1ch b\u1eb1ng X mm.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"760\" height=\"340\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-14-of-IEC-60664-1-only.png\" alt=\"\" class=\"wp-image-2157\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-14-of-IEC-60664-1-only.png 760w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/figure-14-of-IEC-60664-1-only-300x134.png 300w\" sizes=\"auto, (max-width: 760px) 100vw, 760px\" \/><br>\n<figcaption class=\"wp-element-caption\"><strong>H\u00ecnh 14 \u2013 Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2 v\u00e0 khe h\u1edf v\u1edbi b\u1ed9 ph\u1eadn n\u1ed5i d\u1eabn \u0111i\u1ec7n<\/strong><\/figcaption><\/figure><br>\nC: ph\u1ea7n n\u1ed5i d\u1eabn \u0111i\u1ec7n<br>Kho\u1ea3ng c\u00e1ch l\u00e0 kho\u1ea3ng c\u00e1ch = <em>d<\/em> + <em>D<\/em><br>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2 c\u0169ng l\u00e0 = <em>d<\/em> + <em>D<\/em><br>L\u01afU \u00dd Xem B\u1ea3ng F.2 \u0111\u1ec3 bi\u1ebft kho\u1ea3ng h\u1edf t\u1ed1i thi\u1ec3u <em>d<\/em> c\u1ee7a <em>D<\/em>.<br>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"278\" height=\"32\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/clearance.png\" alt=\"\" class=\"wp-image-2166\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng<\/strong><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><figure class=\"wp-block-image size-full is-resized\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"47\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/creepage-distance.png\" alt=\"\" class=\"wp-image-2167\" style=\"width:123px;height:auto\"\/><br>\n<\/figure><\/div><div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><strong>Kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2<\/strong><\/div><\/div><br>\nK\u00edch th\u01b0\u1edbc X, \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong c\u00e1c v\u00ed d\u1ee5 sau, c\u00f3 gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u t\u00f9y thu\u1ed9c v\u00e0o m\u1ee9c \u0111\u1ed9 \u00f4 nhi\u1ec5m nh\u01b0 sau:<br>\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>M\u1ee9c \u0111\u1ed9 \u00f4 nhi\u1ec5m<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u c\u1ee7a k\u00edch th\u01b0\u1edbc X<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">1<\/td><td class=\"has-text-align-center\" data-align=\"center\">0,25mm<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">2<\/td><td class=\"has-text-align-center\" data-align=\"center\">1,0mm<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">3<\/td><td class=\"has-text-align-center\" data-align=\"center\">1,5mm<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>B\u1ea3ng 1 &#8211; K\u00edch th\u01b0\u1edbc c\u1ee7a r\u00e3nh<\/strong><\/figcaption><\/figure><br>\nN\u1ebfu y\u00eau c\u1ea7u khe h\u1edf li\u00ean quan nh\u1ecf h\u01a1n 3 mm th\u00ec k\u00edch th\u01b0\u1edbc X t\u1ed1i thi\u1ec3u c\u00f3 th\u1ec3 gi\u1ea3m xu\u1ed1ng m\u1ed9t ph\u1ea7n ba khe h\u1edf li\u00ean quan.<br>H\u00e3y l\u1ea5y m\u1ed9t v\u00ed d\u1ee5 minh h\u1ecda c\u00e1ch t\u00ednh gi\u00e1 tr\u1ecb &#8220;X mm&#8221;. N\u1ebfu b\u1ea1n \u0111o \u0111\u01b0\u1eddng d\u1eabn 5 mm v\u00e0 t\u00ecm th\u1ea5y m\u1ed9t r\u00e3nh tr\u00ean \u0111\u01b0\u1eddng d\u1eabn, gi\u1ea3 s\u1eed m\u1ee9c \u0111\u1ed9 \u00f4 nhi\u1ec5m l\u00e0 3, d\u1ef1a tr\u00ean b\u1ea3ng tr\u00ean th\u00ec X = 1,5 mm (c\u00f3 t\u00ednh \u0111\u1ebfn m\u1ee9c \u0111\u1ed9 \u00f4 nhi\u1ec5m). N\u1ebfu kho\u1ea3ng c\u00e1ch b\u1ea1n \u0111o \u0111\u01b0\u1ee3c l\u00e0 2,7 mm th\u00ec X = 2,7 mm\/3 = 0,9 mm.<br>\n<figure class=\"wp-block-image size-large\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"523\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1-1024x523.png\" alt=\"\" class=\"wp-image-2150\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1-1024x523.png 1024w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1-300x153.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1-768x393.png 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/example-11-of-IEC-60664-1.png 1250w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><br>\n<\/figure><br>\nH\u00e3y gi\u1ea3i th\u00edch ri\u00eang v\u00ed d\u1ee5 11. H\u00ecnh \u1ea3nh tr\u00ean \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb phi\u00ean b\u1ea3n IEC 60664-1:2007. N\u1ebfu b\u1ea1n \u0111\u1ecdc xem k\u1ef9 h\u00ecnh s\u1ebd th\u1ea5y ch\u1ec9 khi d v\u00e0 gt;X th\u00ec kho\u1ea3ng c\u00e1ch = d + D m\u1edbi \u0111\u00fang, ng\u01b0\u1ee3c l\u1ea1i th\u00ec kho\u1ea3ng c\u00e1ch l\u00e0 D. Quy t\u1eafc t\u00ednh c\u1ee7a D v\u00e0 d l\u00e0 nh\u01b0 nhau. Tuy nhi\u00ean, ch\u00fang t\u00f4i c\u1ea7n ch\u1ec9 ra r\u1eb1ng, tr\u00ean th\u1ef1c t\u1ebf, \u0111\u00e2y l\u00e0 m\u1ed9t l\u1ed7i v\u00e0 ti\u00eau chu\u1ea9n \u0111\u01b0a ra y\u00eau c\u1ea7u kh\u00f4ng ch\u00ednh x\u00e1c. Phi\u00ean b\u1ea3n ti\u00eau chu\u1ea9n IEC 60664-1:2020 \u0111\u00e3 s\u1eeda l\u1ed7i n\u00e0y.<br>\n<br>\nC\u00e1c quy t\u1eafc v\u1ec1 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c quy t\u1eafc v\u1ec1 khe h\u1edf kh\u00f4ng kh\u00ed v\u00e0 c\u00e1c y\u00eau c\u1ea7u trong \u0110i\u1ec1u 29 c\u0169ng ph\u1ee9c t\u1ea1p h\u01a1n. V\u1ec1 kho\u1ea3ng c\u00e1ch r\u00f2 r\u1ec9, t\u00f4i ngh\u0129 n\u1ebfu b\u1ea1n \u0111\u1ecdc hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng th\u00f4ng tin tr\u00ean th\u00ec c\u0169ng \u0111\u1ee7 \u0111\u1ec3 th\u1ef1c hi\u1ec7n b\u1ed9 ti\u00eau chu\u1ea9n IEC 60335. C\u00e1c y\u00eau c\u1ea7u v\u1ec1 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng r\u00f2 \u1edf \u0111i\u1ec1u 29.2 s\u1ebd \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u chi ti\u1ebft khi gi\u1edbi thi\u1ec7u \u0111i\u1ec1u 29.2.<br>","protected":false},"excerpt":{"rendered":"<p>kho\u1ea3ng c\u00e1ch \u0111\u01b0\u1eddng r\u00f2: kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t d\u1ecdc theo b\u1ec1 m\u1eb7t c\u00e1ch \u0111i\u1ec7n gi\u1eefa hai b\u1ed9 ph\u1eadn d\u1eabn \u0111i\u1ec7n ho\u1eb7c gi\u1eefa b\u1ed9 ph\u1eadn d\u1eabn \u0111i\u1ec7n v\u00e0 b\u1ec1 m\u1eb7t ch\u1ea1m t\u1edbi \u0111\u01b0\u1ee3c. \u0110i\u1ec7n t\u00edch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy\u1ec1n theo h\u01b0\u1edbng c\u00f3 h\u01b0\u1edbng trong kh\u00f4ng kh\u00ed, do \u0111\u00f3 t\u1ea1o th\u00e0nh d\u00f2ng \u0111i\u1ec7n. \u0110\u00e2y l\u00e0 \u00fd ngh\u0129a&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[5],"tags":[87,88,143,147],"class_list":["post-2121","post","type-post","status-publish","format-standard","hentry","category-terms-and-definitions","tag-shortest-distance-in-air-between-two-conductive-parts-or-between-a-conductive-part-and-the-accessible-surface","tag-shortest-distance-along-the-surface-of-insulation-between-two-conductive-parts-or-between-a-conductive-part-and-the-accessible-surface","tag-pollution-degree","tag-protection-against-electric-shock"],"translation":{"provider":"WPGlobus","version":"3.0.1","language":"vi","enabled_languages":["en","es","ar","de","ja","fr","ru","th","nl","it","fa","ko","pt","hi","ro","tr","vi","id","zu"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"es":{"title":true,"content":true,"excerpt":false},"ar":{"title":true,"content":true,"excerpt":false},"de":{"title":true,"content":true,"excerpt":false},"ja":{"title":true,"content":true,"excerpt":false},"fr":{"title":true,"content":true,"excerpt":false},"ru":{"title":true,"content":true,"excerpt":false},"th":{"title":true,"content":true,"excerpt":false},"nl":{"title":true,"content":true,"excerpt":false},"it":{"title":true,"content":true,"excerpt":false},"fa":{"title":true,"content":true,"excerpt":false},"ko":{"title":true,"content":true,"excerpt":false},"pt":{"title":true,"content":true,"excerpt":false},"hi":{"title":true,"content":true,"excerpt":false},"ro":{"title":true,"content":true,"excerpt":false},"tr":{"title":true,"content":true,"excerpt":false},"vi":{"title":true,"content":true,"excerpt":false},"id":{"title":true,"content":true,"excerpt":false},"zu":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/posts\/2121","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/comments?post=2121"}],"version-history":[{"count":38,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/posts\/2121\/revisions"}],"predecessor-version":[{"id":2256,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/posts\/2121\/revisions\/2256"}],"wp:attachment":[{"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/media?parent=2121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/categories?post=2121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/tags?post=2121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}