{"id":597,"date":"2024-08-27T18:36:20","date_gmt":"2024-08-27T16:36:20","guid":{"rendered":"https:\/\/gezhi-tech.com\/?p=597"},"modified":"2025-09-27T17:50:23","modified_gmt":"2025-09-27T15:50:23","slug":"clause-3-how-to-understand-the-definition-of-clearance","status":"publish","type":"post","link":"https:\/\/gezhi-tech.com\/vi\/clause-3-how-to-understand-the-definition-of-clearance\/","title":{"rendered":"Kho\u1ea3n 3 \u2013 C\u00e1ch hi\u1ec3u \u0111\u1ecbnh ngh\u0129a \u201cth\u00f4ng quan\u201d"},"content":{"rendered":"khe h\u1edf: kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t trong kh\u00f4ng kh\u00ed 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<br>b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn.<br>\n<br>\nGi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m r\u1ea5t quan tr\u1ecdng. \u0110\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1ed9 h\u1edf, ch\u00fang ta c\u1ea7n n\u00f3i l\u1ea1i r\u1eb1ng kh\u00f4ng c\u00f3 ch\u1ea5t n\u00e0o c\u00e1ch \u0111i\u1ec7n ho\u00e0n to\u00e0n v\u00e0 kh\u00f4ng kh\u00ed c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111i\u1ec7n. Khi \u0111i\u1ec7n \u00e1p r\u1ea5t cao, d\u00f2ng \u0111i\u1ec7n s\u1ebd \u0111\u01b0\u1ee3c truy\u1ec1n qua kh\u00f4ng kh\u00ed. S\u00e9t \u0111\u00e1nh trong gi\u00f4ng b\u00e3o l\u00e0 m\u1ed9t v\u00ed d\u1ee5 \u0111i\u1ec3n h\u00ecnh c\u1ee7a s\u00e9t truy\u1ec1n qua kh\u00f4ng kh\u00ed. \u0110i\u1ec7n \u00e1p c\u1ee7a s\u00e9t r\u1ea5t cao n\u00ean c\u00f3 th\u1ec3 xuy\u00ean qua m\u1ed9t \u0111o\u1ea1n kh\u00f4ng kh\u00ed r\u1ea5t d\u00e0i, khi\u1ebfn ph\u1ea7n kh\u00f4ng kh\u00ed n\u00e0y d\u1eabn \u0111i\u1ec7n. Trong c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n gia d\u1ee5ng, m\u1eb7c d\u00f9 \u0111i\u1ec7n \u00e1p r\u1ea5t th\u1ea5p nh\u01b0ng trong s\u1ea3n ph\u1ea9m c\u00f3 r\u1ea5t nhi\u1ec1u kh\u00f4ng kh\u00ed v\u00e0 d\u00f2ng \u0111i\u1ec7n c\u0169ng s\u1ebd \u0111\u01b0\u1ee3c truy\u1ec1n qua kh\u00f4ng kh\u00ed. Khi \u0111i\u1ec7n \u00e1p t\u0103ng l\u00ean, kho\u1ea3ng c\u00e1ch m\u00e0 \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 truy\u1ec1n qua kh\u00f4ng kh\u00ed c\u0169ng s\u1ebd d\u00e0i h\u01a1n. \u0110i\u1ec1u n\u00e0y l\u00e0m n\u1ea3y sinh kh\u00e1i ni\u1ec7m gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng.<br>\u0110\u1ec3 bi\u1ebft gi\u1ea3i th\u00edch chi ti\u1ebft v\u1ec1 gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng, vui l\u00f2ng tham kh\u1ea3o IEC 60664-1 (Ph\u1ed1i h\u1ee3p c\u00e1ch \u0111i\u1ec7n cho thi\u1ebft b\u1ecb trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p th\u1ea5p \u2013 Ph\u1ea7n 1: Nguy\u00ean t\u1eafc, y\u00eau c\u1ea7u v\u00e0 th\u1eed nghi\u1ec7m).<br>\n<br>\nT\u00f4i ngh\u0129 nh\u1eefng h\u00ecnh \u1ea3nh sau \u0111\u00e2y c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch r\u00f5 r\u00e0ng \u0111\u01b0\u1eddng \u0111i c\u1ee7a khe h\u1edf \u0111i\u1ec7n.<br>\n<figure class=\"wp-block-image size-large\"><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\" 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>\nC\u00f3 th\u1ec3 h\u00ecnh th\u00e0nh khe h\u1edf gi\u1eefa hai \u0111i\u1ec7n c\u1ef1c c\u00f3 \u0111i\u1ec7n \u00e1p kh\u00e1c nhau ho\u1eb7c gi\u1eefa b\u1ed9 ph\u1eadn mang \u0111i\u1ec7n v\u00e0 b\u00e0n tay c\u1ee7a ng\u01b0\u1eddi s\u1eed d\u1ee5ng s\u1ea3n ph\u1ea9m \u0111i\u1ec7n. B\u1ea1n ch\u1ec9 c\u1ea7n t\u01b0\u1edfng t\u01b0\u1ee3ng hai \u0111i\u1ec7n c\u1ef1c trong h\u00ecnh tr\u00ean l\u00e0 nh\u1eefng v\u1eadt th\u1ec3 kh\u00e1c. <br>Khi gi\u1ea3i th\u00edch v\u1ec1 c\u00e1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n v\u00e0 c\u00e1ch \u0111i\u1ec7n ch\u1ee9c n\u0103ng, ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u01b0a ra m\u1ed9t s\u1ed1 b\u1ee9c \u1ea3nh th\u1ef1c t\u1ebf \u0111\u1ec3 gi\u1ea3i th\u00edch c\u00e1c v\u00ed d\u1ee5 v\u1ec1 khe h\u1edf v\u00e0 \u0111\u1ed9 r\u00f2.<br>\n<br>\nH\u00ecnh 11 \u2013 V\u00ed d\u1ee5 v\u1ec1 c\u00e1c kho\u1ea3ng tr\u1ed1ng trong ti\u00eau chu\u1ea9n IEC 60335-1 \u0111\u01b0a ra m\u1ed9t v\u00ed d\u1ee5 \u0111\u01a1n gi\u1ea3n. D\u1ef1a v\u00e0o h\u00ecnh n\u00e0y, ch\u00fang ta c\u00f3 th\u1ec3 ngh\u0129 v\u1ec1 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m c\u01a1 b\u1ea3n c\u1ee7a thi\u1ebft b\u1ecb c\u1ea5p II, c\u00f4ng tr\u00ecnh c\u1ea5p II, thi\u1ebft b\u1ecb c\u1ea5p I v\u00e0 c\u00f4ng tr\u00ecnh c\u1ea5p I.<br>\n<figure class=\"wp-block-image size-large\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"702\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/Figure-11-\u2013-Examples-of-clearances-1024x702.png\" alt=\"\" class=\"wp-image-2195\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/Figure-11-\u2013-Examples-of-clearances-1024x702.png 1024w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/Figure-11-\u2013-Examples-of-clearances-300x206.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/Figure-11-\u2013-Examples-of-clearances-768x526.png 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/Figure-11-\u2013-Examples-of-clearances.png 1080w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><br>\n<\/figure><br>\nPh\u00edm<br>1 ph\u1ea7n kim lo\u1ea1i \u0111\u01b0\u1ee3c khai qu\u1eadt c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn<br>2 bao v\u00e2y<br>3 b\u1ed9 ph\u1eadn kim lo\u1ea1i n\u1ed1i \u0111\u1ea5t c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn<br>4 ph\u1ea7n kim lo\u1ea1i \u0111\u01b0\u1ee3c khai qu\u1eadt kh\u00f4ng th\u1ec3 ti\u1ebfp c\u1eadn<br>C\u00e1c b\u1ed9 ph\u1eadn mang \u0111i\u1ec7n L1 v\u00e0 L2 \u0111\u01b0\u1ee3c t\u00e1ch bi\u1ec7t v\u1edbi nhau v\u00e0 \u0111\u01b0\u1ee3c bao b\u1ecdc m\u1ed9t ph\u1ea7n b\u1eb1ng v\u1ecf nh\u1ef1a c\u00f3 c\u00e1c l\u1ed7, m\u1ed9t ph\u1ea7n b\u1eb1ng kh\u00f4ng kh\u00ed v\u00e0 ti\u1ebfp x\u00fac v\u1edbi c\u00e1ch \u0111i\u1ec7n r\u1eafn. M\u1ed9t m\u1ea3nh kim lo\u1ea1i kh\u00f4ng th\u1ec3 ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o b\u00ean trong c\u00f4ng tr\u00ecnh. C\u00f3 hai v\u1ecf kim lo\u1ea1i, m\u1ed9t trong s\u1ed1 \u0111\u00f3 \u0111\u01b0\u1ee3c n\u1ed1i \u0111\u1ea5t.<br>                               Lo\u1ea1i khe h\u1edf c\u00e1ch \u0111i\u1ec7n                            <br>                               C\u00e1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n L1A<br>                                                                                                  L1D<br>                                                                                                  L2F<br>                               C\u00e1ch \u0111i\u1ec7n ch\u1ee9c n\u0103ng L1L2<br>                               C\u00e1ch \u0111i\u1ec7n b\u1ed5 sung DE<br>                                                                                                 FG<br>                               T\u0103ng c\u01b0\u1eddng c\u00e1ch \u0111i\u1ec7n L1K<br>                                                                                                 L1J<br>                                                                                                 L2I<br>                                                                                                 L1C<br><em>CH\u00da TH\u00cdCH N\u1ebfu khe h\u1edf kh\u00f4ng kh\u00ed L1D ho\u1eb7c L2F \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 khe h\u1edf kh\u00f4ng kh\u00ed \u0111\u1ed1i v\u1edbi c\u00e1ch \u0111i\u1ec7n t\u0103ng c\u01b0\u1eddng th\u00ec kh\u00f4ng \u0111o khe h\u1edf kh\u00f4ng kh\u00ed DE ho\u1eb7c FG c\u1ee7a c\u00e1ch \u0111i\u1ec7n ph\u1ee5.<\/em>","protected":false},"excerpt":{"rendered":"<p>khe h\u1edf: kho\u1ea3ng c\u00e1ch ng\u1eafn nh\u1ea5t trong kh\u00f4ng kh\u00ed gi\u1eefa hai b\u1ed9 ph\u1eadn d\u1eabn \u0111i\u1ec7n ho\u1eb7c gi\u1eefa b\u1ed9 ph\u1eadn d\u1eabn \u0111i\u1ec7n v\u00e0b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn. Gi\u1ea3i ph\u00f3ng m\u1eb7t b\u1eb1ng l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m r\u1ea5t quan tr\u1ecdng. \u0110\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1ed9 h\u1edf, ch\u00fang ta c\u1ea7n n\u00f3i l\u1ea1i r\u1eb1ng kh\u00f4ng c\u00f3 ch\u1ea5t n\u00e0o c\u00e1ch \u0111i\u1ec7n&#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":[74,82,166,83,84,87,78,105],"class_list":["post-597","post","type-post","status-publish","format-standard","hentry","category-terms-and-definitions","tag-insulation-applied-to-live-parts-to-provide-basic-protection-against-electric-shock","tag-appliance-in-which-protection-against-electric-shock-does-not-rely-on-basic-insulation-only-but-which-includes-an-additional-safety-precaution-in-that-conductive-accessible-parts-are-connected-to-the","tag-class-i-construction","tag-appliance-in-which-protection-against-electric-shock-does-not-rely-on-basic-insulation-only-but-in-which-additional-safety-precautions-are-provided-such-as-double-insulation-or-reinforced-insulation","tag-part-of-an-appliance-for-which-protection-against-electric-shock-relies-upon-double-insulation-or-reinforced-insulation","tag-shortest-distance-in-air-between-two-conductive-parts-or-between-a-conductive-part-and-the-accessible-surface","tag-insulation-between-conductive-parts-of-different-potential-which-is-necessary-only-for-the-proper-functioning-of-the-appliance","tag-conductor-or-conductive-part-intended-to-be-energized-in-normal-use-including-a-neutral-conductor-but-by-convention-not-a-pen-conductor"],"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\/597","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=597"}],"version-history":[{"count":78,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/posts\/597\/revisions"}],"predecessor-version":[{"id":2235,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/posts\/597\/revisions\/2235"}],"wp:attachment":[{"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/media?parent=597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/categories?post=597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gezhi-tech.com\/vi\/wp-json\/wp\/v2\/tags?post=597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}