{"id":2282,"date":"2024-09-05T12:58:43","date_gmt":"2024-09-05T10:58:43","guid":{"rendered":"https:\/\/gezhi-tech.com\/?p=2282"},"modified":"2025-09-27T17:50:23","modified_gmt":"2025-09-27T15:50:23","slug":"clause-3-how-to-understand-the-definition-of-safety-extra-low-voltage","status":"publish","type":"post","link":"https:\/\/gezhi-tech.com\/ko\/clause-3-how-to-understand-the-definition-of-safety-extra-low-voltage\/","title":{"rendered":"\uc81c3\ud56d \u2013 \u201c\uc548\uc804\ucd08\uc800\uc804\uc555\u201d\uc758 \uc815\uc758\ub97c \uc774\ud574\ud558\ub294 \ubc29\ubc95"},"content":{"rendered":"\uc548\uc804\ucd08\uc800\uc804\uc555: \ub3c4\uccb4 \uac04 \ubc0f \ub3c4\uccb4\uc640 \ub300\uc9c0 \uc0ac\uc774\uc758 \uc804\uc555\uc774 42V\ub97c \ucd08\uacfc\ud558\uc9c0 \uc54a\ub294 \uc804\uc555, \ubb34\ubd80\ud558 \uc804\uc555\uc774 50V\ub97c \ucd08\uacfc\ud558\uc9c0 \uc54a\ub294 \uacbd\uc6b0 \uc548\uc804\ucd08\uc800\uc804\uc555\uc774 \uacf5\uae09 \uc8fc\uc804\uc6d0\uc73c\ub85c\ubd80\ud130 \uc5bb\uc5b4\uc9c0\ub294 \uacbd\uc6b0 \uc548\uc804 \uc808\uc5f0\uc744 \uac70\uccd0\uc57c \ud569\ub2c8\ub2e4. \uc808\uc5f0\uc774 \uc774\uc911 \uc808\uc5f0 \ub610\ub294 \uac15\ud654 \uc808\uc5f0 \uc694\uad6c \uc0ac\ud56d\uc744 \uc900\uc218\ud558\ub294 \ubcc4\ub3c4\uc758 \uad8c\uc120\uc774 \uc788\ub294 \ubcc0\uc555\uae30 \ub610\ub294 \ubcc0\ud658\uae30.<br><em>\ucc38\uace0 1 \uc9c0\uc815\ub41c \uc804\uc555 \uc81c\ud55c\uc740 \uc548\uc804 \uc808\uc5f0 \ubcc0\uc555\uae30\uac00 \uc815\uaca9 \uc804\uc555\uc73c\ub85c \uacf5\uae09\ub41c\ub2e4\ub294 \uac00\uc815\uc744 \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4.<br>\ucc38\uace0 2 \uc548\uc804\ucd08\uc800\uc804\uc555\uc740 SELV\ub77c\uace0\ub3c4 \ud569\ub2c8\ub2e4.<\/em><br>\n\uba38\ub9ac\ub9d0-1 <a href=\"https:\/\/gezhi-tech.com\/foreword-1\/\">. \ub3d9\uc2dc\uc5d0, \ubcf8 \ud56d\uc5d0\uc11c \uc815\uc758\ub41c &#8220;\uc548\uc804\uc131&#8221;\uc740 \uc0ac\uc6a9\uc790\uac00 SELV\ub97c \uc9c1\uc811 \ub9cc\uc9c8 \uc218 \uc788\uc744 \uc815\ub3c4\ub85c \uc808\ub300\uc801\uc778 \uc548\uc804\uc744 \uc758\ubbf8\ud558\uc9c0\ub294 \uc54a\uc2b5\ub2c8\ub2e4. \uc139\uc158 8.1.4\uc758 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud558\ub294 SELV \ud68c\ub85c\ub9cc \uc0ac\uc6a9\uc790\uac00 \ub9cc\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uc804\uc555\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \uc548\uc804 \uc808\uc5f0 \ubcc0\uc555\uae30 \ub610\ub294 \ubcc4\ub3c4\uc758 \uad8c\uc120\uc774 \uc788\ub294 \ubcc0\ud658\uae30\ub97c \ud1b5\ud574 \uc804\uc555\uc744 \uac15\uc555\ud558\uc5ec \uc5bb\uc2b5\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uc548\uc804 \uc808\uc5f0 \ubcc0\uc555\uae30\ub97c \ud1b5\ud574 \uc5bb\uc2b5\ub2c8\ub2e4. \uc5ec\uae30\uc11c \ubcc4\ub3c4\uc758 \uad8c\uc120\uc774 \uc788\ub294 \uc548\uc804 \uc808\uc5f0 \ubcc0\uc555\uae30 \ub610\ub294 \ubcc0\ud658\uae30\ub294 1\ucc28 \uad8c\uc120\uacfc 2\ucc28 \uad8c\uc120\uc774 \uad6c\uc870\uc801\uc73c\ub85c \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd84\ub9ac\ub418\uc5b4 \uc788\uc74c\uc744 \ubcf4\uc7a5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc989, 1\ucc28 \uad8c\uc120\uacfc 2\ucc28 \uad8c\uc120\uc774 \uc9c1\uc811 \uc811\ucd09\ud558\uc9c0 \uc54a\ub3c4\ub85d \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubcc4\ub3c4\uc758 \uad8c\uc120\uc5d0 \uc758\ud55c \uc774\ub7ec\ud55c \ud68c\ub85c \ubd84\ub9ac\uc5d0 \ub300\uc751\ud558\ub294 \uc804\uc555 \uc870\uc815 \ubc29\ubc95\uc758 \uc77c\ubc18\uc801\uc778 \uc608\ub294 220V \ud68c\ub85c\uc5d0 \uc800\ud56d\uacfc \ucee4\ud328\uc2dc\ud130\ub97c \ubcd1\ub82c\ub85c \uc5f0\uacb0\ud558\ub294 RC \uac15\uc555 \ubc29\uc2dd\uc785\ub2c8\ub2e4. RC \uac15\uc555 \ubc29\uc2dd\uc5d0\uc11c\ub294 \uace0\uc804\uc555 \ubd80\ubd84\uacfc \uc800\uc804\uc555 \ubd80\ubd84\uc774 \ud68c\ub85c\uc5d0 \uc5f0\uacb0\ub429\ub2c8\ub2e4. \ub2f9\uc5f0\ud788 \ubb3c\ub9ac\uc801 \uc218\ub2e8\uc73c\ub85c \ud68c\ub85c\ub97c \ubd84\ub9ac\ud558\ub294 \uc804\uc790\uc758 \ubc29\ubc95\uc774 \ub354 \uc548\uc804\ud558\ub2e4. \ub2e8\uc21c\ud55c \ubb3c\ub9ac\uc801 \ubd84\ub9ac\ub77c\uba74 \uc5ec\uc804\ud788 \uc548\uc804 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \ud45c\uc900\uc5d0\uc11c \uc694\uad6c\ud558\ub294 \uc808\uc5f0\uc740 \uc774\uc911 \uc808\uc5f0 \ub610\ub294 \uac15\ud654 \uc808\uc5f0 \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud574\uc57c \ud569\ub2c8\ub2e4. \uac04\ub2e8\ud788 \ub9d0\ud574\uc11c, \uace0\uc804\uc555 \ubd80\ubd84\uacfc \uc800\uc804\uc555 \ubd80\ubd84 \uc0ac\uc774\uc5d0 \ub0ae\uc740 \uc628\ub3c4 \uc800\ud56d\uc744 \uac16\ub294 \uc587\uc740 \ud50c\ub77c\uc2a4\ud2f1 \uc2dc\ud2b8\uc640 \uac19\uc774 \ub9e4\uc6b0 \uac04\ub2e8\ud55c \uc808\uc5f0\uc774 \uc788\ub294 \uacbd\uc6b0 \uc774 \uc808\uc5f0\uc740 \uace0\uc628 \ub610\ub294 \uace0\uc804\uc555 \uc870\uac74\uc5d0\uc11c \uc27d\uac8c \ud30c\uc190\ub420 \uc218 \uc788\uc73c\uba70 \uae30\ubcf8\uc801\uc73c\ub85c \uc808\uc5f0\uc774 \ubd88\uac00\ub2a5\ud569\ub2c8\ub2e4. \uc774 \ud50c\ub77c\uc2a4\ud2f1 \uc2dc\ud2b8 \uce35\uc740 \uace0\uc804\uc555 \ud68c\ub85c\uc640 \uc800\uc804\uc555 \ud68c\ub85c\ub97c \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd84\ub9ac\ud558\uae30\ub3c4 \ud558\uc9c0\ub9cc \uc808\uc5f0 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc774\uc911 \uc808\uc5f0 \ubc0f \uac15\ud654 \uc808\uc5f0\uc758 \uc808\uc5f0 \uc694\uad6c \uc0ac\ud56d\ub3c4 \uc774\uc911 \ubcf4\ud638 \uc218\ub2e8\uc785\ub2c8\ub2e4.<\/a>\uc544\ub798 \uadf8\ub9bc\uacfc \uac19\uc774 \ubcc0\uc555\uae30\uc5d0\ub294 1\ucc28 \uad8c\uc120\uacfc 2\ucc28 \uad8c\uc120\uc744 \ubd84\ub9ac\ud558\uae30 \uc704\ud574 \ub514\uc2a4\ud06c\uc5d0 \uc218\uc9c1\uc73c\ub85c \ubc30\uce58\ub41c 3\uac1c\uc758 \ud50c\ub77c\uc2a4\ud2f1 \ube0c\ub798\ud0b7\uc774 \uc788\uc73c\uba70(1\ucc28 \uad8c\uc120\uacfc 2\ucc28 \uad8c\uc120\uc740 \uc678\ubd80\uc5d0 \ud30c\ub780\uc0c9 \ud50c\ub77c\uc2a4\ud2f1 \ud14c\uc774\ud504\ub85c \uac10\uaca8\uc838 \uc788\uc74c), 1\ucc28 \uad8c\uc120\uacfc 2\ucc28 \uad8c\uc120\uc740 \ubb3c\ub9ac\uc801\uc73c\ub85c \uace0\ub9bd\ub418\uc5b4 \uc788\ub2e4.<br>\n<br>\n\uc544\ub798 \uadf8\ub9bc\uacfc \uac19\uc774 \ubcc0\uc555\uae30\uc758 \uc911\uc559\uc5d0\ub294 1\ucc28 \uad8c\uc120\uacfc 2\ucc28 \uad8c\uc120\uc774 \ub178\ub780\uc0c9 \ud14c\uc774\ud504\ub85c \uac10\uaca8\uc838 \uc788\uc2b5\ub2c8\ub2e4. \uac15\ud654 \uc808\uc5f0\uc744 \uc704\ud55c \uc5f0\uba74 \uac70\ub9ac \uc694\uad6c \uc0ac\ud56d\uc744 \ucda9\uc871\ud560 \uc218 \uc788\ub294\uc9c0 \ud655\uc778\ud558\ub824\uba74 \ub450 \uad8c\uc120 \uc0ac\uc774\uc758 \uac80\uc815\uc0c9 \ube0c\ub798\ud0b7\uc758 \uc5f0\uba74 \uac70\ub9ac\uc5d0 \ud2b9\ubcc4\ud55c \uc8fc\uc758\ub97c \uae30\uc6b8\uc5ec\uc57c \ud569\ub2c8\ub2e4. \uadf8\ub807\uc9c0 \uc54a\uc740 \uacbd\uc6b0 \ud574\ub2f9 \ubcc0\uc555\uae30\ub294 \uc548\uc804\uc808\uc5f0\ubcc0\uc555\uae30\ub85c \ud310\ub2e8\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<br>\n<br>\n\uc548\uc804\uc808\uc5f0\ubcc0\uc555\uae30\uc758 \uad6c\uc870\uc5d0 \ub300\ud574\uc11c\ub294 \ub2e4\uc74c \ud3ec\uc2a4\ud305\uc5d0\uc11c \uc790\uc138\ud788 \uc124\uba85\ud558\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.<br>\n<figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"251\" height=\"194\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/transformer1.png\" alt=\"\" class=\"wp-image-2295\"\/><br>\n<\/figure><br>\nAs shown in the figure below, the transformer has yellow tape wrapped around the primary and secondary windings in the middle. We need to pay special attention to the <a href=\"\/index.php\/clause-3-how-to-understand-the-definition-of-creepage-distance\/\" target=\"_blank\"> <strong>creepage distance<\/strong><\/a> of the black bracket between the two windings to see if it can meet the creepage distance requirements for <a href=\"\/index.php\/clause-3-how-to-understand-the-definition-of-reinforced-insulation\/\" target=\"_blank\"><strong>reinforced insulation<\/strong><\/a>. If not, the transformer cannot be judged as a <a href=\"\/index.php\/clause-3-how-to-understand-the-definition-of-safety-isolating-transformer\/\" target=\"_blank\"> <strong>safety isolating transformer<\/strong><\/a>.<br>\n<figure class=\"wp-block-image size-full\"><br>\n<img loading=\"lazy\" decoding=\"async\" width=\"360\" height=\"364\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/transformer.png\" alt=\"\" class=\"wp-image-2296\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/transformer.png 360w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/09\/transformer-297x300.png 297w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><br>\n<\/figure><br>\nWe will explain the structure of the safety isolating transformer in detail in the next post.<br>","protected":false},"excerpt":{"rendered":"<p>\uc548\uc804\ucd08\uc800\uc804\uc555: \ub3c4\uccb4 \uac04 \ubc0f \ub3c4\uccb4\uc640 \ub300\uc9c0 \uc0ac\uc774\uc758 \uc804\uc555\uc774 42V\ub97c \ucd08\uacfc\ud558\uc9c0 \uc54a\ub294 \uc804\uc555, \ubb34\ubd80\ud558 \uc804\uc555\uc774 50V\ub97c \ucd08\uacfc\ud558\uc9c0 \uc54a\ub294 \uacbd\uc6b0 \uc548\uc804\ucd08\uc800\uc804\uc555\uc774 \uacf5\uae09 \uc8fc\uc804\uc6d0\uc73c\ub85c\ubd80\ud130 \uc5bb\uc5b4\uc9c0\ub294 \uacbd\uc6b0 \uc548\uc804 \uc808\uc5f0\uc744 \uac70\uccd0\uc57c \ud569\ub2c8\ub2e4. \uc808\uc5f0\uc774 \uc774\uc911 \uc808\uc5f0 \ub610\ub294 \uac15\ud654 \uc808\uc5f0 \uc694\uad6c \uc0ac\ud56d\uc744 \uc900\uc218\ud558\ub294 \ubcc4\ub3c4\uc758 \uad8c\uc120\uc774 \uc788\ub294 \ubcc0\uc555\uae30 \ub610\ub294 \ubcc0\ud658\uae30.\ucc38\uace0 1 \uc9c0\uc815\ub41c \uc804\uc555 \uc81c\ud55c\uc740 \uc548\uc804 \uc808\uc5f0 \ubcc0\uc555\uae30\uac00 \uc815\uaca9 \uc804\uc555\uc73c\ub85c \uacf5\uae09\ub41c\ub2e4\ub294 \uac00\uc815\uc744 \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4.\ucc38\uace0&#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":[167,74,76,89,77,90,91,163,75],"class_list":["post-2282","post","type-post","status-publish","format-standard","hentry","category-terms-and-definitions","tag-8-1-4","tag-insulation-applied-to-live-parts-to-provide-basic-protection-against-electric-shock","tag-insulation-system-comprising-both-basic-insulation-and-supplementary-insulation","tag-voltage-supplied-from-a-source-within-the-appliance-that-does-not-exceed-50-v-between-conductors-and-between-conductors-and-earth-or-functional-earth-when-the-appliance-is-supplied-at-rated-voltage","tag-single-insulation-applied-to-live-parts-that-provides-a-degree-of-protection-against-electric-shock-equivalent-to-double-insulation-under-the-conditions-specified-in-this-standard","tag-voltage-not-exceeding-42-v-between-conductors-and-between-conductors-and-earth-or-functional-earth-the-no-load-voltage-not-exceeding-50-v","tag-transformer-the-input-winding-of-which-is-electrically-separated-from-the-output-winding-by-an-insulation-at-least-equivalent-to-double-insulation-or-reinforced-insulation-that-is-intended-to-supply","tag-selv","tag-independent-insulation-applied-in-addition-to-basic-insulation-in-order-to-provide-protection-against-electric-shock-in-the-event-of-a-failure-of-basic-insulation"],"translation":{"provider":"WPGlobus","version":"3.0.1","language":"ko","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":false,"content":false,"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":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/posts\/2282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/comments?post=2282"}],"version-history":[{"count":20,"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/posts\/2282\/revisions"}],"predecessor-version":[{"id":2355,"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/posts\/2282\/revisions\/2355"}],"wp:attachment":[{"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/media?parent=2282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/categories?post=2282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gezhi-tech.com\/ko\/wp-json\/wp\/v2\/tags?post=2282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}