{"id":8443,"date":"2026-06-16T17:15:15","date_gmt":"2026-06-16T17:15:15","guid":{"rendered":"https:\/\/www.yunrui-controls.com\/?p=8443"},"modified":"2026-06-16T17:15:15","modified_gmt":"2026-06-16T17:15:15","slug":"24v-dc-vs-220v-ac-instrument-power-supply-guide","status":"publish","type":"post","link":"https:\/\/www.yunrui-controls.com\/ko\/24v-dc-vs-220v-ac-instrument-power-supply-guide\/","title":{"rendered":"24V DC\uc640 220V AC \uacc4\uce21\uae30 \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58: \uc644\ubcbd\ud55c \uc120\ud0dd \uac00\uc774\ub4dc"},"content":{"rendered":"<p>\ub2e4\uc74c \uc911\uc5d0\uc11c \uc120\ud0dd\ud558\uc138\uc694 <strong>24V DC \ubc0f 220V AC \uacc4\uce21\uae30 \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58<\/strong> \uc0b0\uc5c5 \uc790\ub3d9\ud654\uc5d0\uc11c \uc804\uc555 \uc120\ud0dd\uc740 \ub9e4\uc6b0 \uc911\uc694\ud55c \uacb0\uc815\uc785\ub2c8\ub2e4. \uc798\ubabb\ub41c \uc804\uc555\uc744 \uc0ac\uc6a9\ud558\uba74 \uc548\uc804 \uc704\ud5d8, \uc2e0\ud638 \uac04\uc12d \ub610\ub294 \uc7a5\ube44 \uace0\uc7a5\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uac00\uc774\ub4dc\uc5d0\uc11c\ub294 \uc0b0\uc5c5\uc6a9 \uacc4\uce21\uae30\uc5d0 24V DC\uc640 220V AC \uc911 \uc5b4\ub5a4 \uc804\uc555\uc744 \uc0ac\uc6a9\ud574\uc57c \ud558\ub294\uc9c0, \uadf8\ub9ac\uace0 \uc2e4\uc81c \ud604\uc7a5 \uc801\uc6a9\uc5d0 \uc801\ud569\ud55c \uc120\ud0dd \uae30\uc900\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/p>\n<p>\ube60\ub978 \ud0d0\uc0c9: <a href=\"#comparison\">\ube44\uad50<\/a> | <a href=\"#24vdc-design\">24V DC \uc124\uacc4<\/a> | <a href=\"#220vac-apps\">220V AC \uc560\ud50c\ub9ac\ucf00\uc774\uc158<\/a> | <a href=\"#hazardous\">\uc704\ud5d8 \uc9c0\uc5ed<\/a> | <a href=\"#selection\">\uc120\ubc1c \uacfc\uc815<\/a> | <a href=\"#mistakes\">\ud754\ud788 \uc800\uc9c0\ub974\ub294 \uc2e4\uc218<\/a><\/p>\n<h2 id=\"comparison\">1. 24V DC\uc640 220V AC: \ud575\uc2ec\uc801\uc778 \ucc28\uc774\uc810<\/h2>\n<p>24V DC\uc640 220V AC \uc911 \uc5b4\ub5a4 \uac83\uc744 \uc120\ud0dd\ud560\uc9c0\ub294 \uc548\uc804 \uc694\uad6c \uc0ac\ud56d, \uc804\ub825 \uc18c\ube44\ub7c9 \ubc0f \uc124\uce58 \ud658\uacbd\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4. \uae30\ubcf8\uc801\uc778 \ube44\uad50\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px;\">\n<tbody>\n<tr style=\"background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white;\">\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">\uae30\ub2a5<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">24V DC<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">220V \uad50\ub958<\/th>\n<\/tr>\n<tr style=\"background: #f8f9ff;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\ud83d\udd12 \uc548\uc804 \uad50\uc721<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">SELV(\ucd08\uc800\uc804\uc555), \ucda9\uaca9 \uc704\ud5d8 \ucd5c\uc18c\ud654<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\uc704\ud5d8 \uc804\uc555\uc774\ubbc0\ub85c \uc808\uc5f0 \ubcf4\ud638\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\ud83d\udee1\ufe0f \ubcf8\uc9c8\uc801 \uc548\uc804\uc131<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u2705 Ex ia\/ib(\uc548\uc804 \uc7a5\ubcbd \ud3ec\ud568)\uc640 \ud638\ud658 \uac00\ub2a5<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u274c \ubcf8\uc9c8 \uc548\uc804 \uc124\uacc4\uc640 \ud638\ud658\ub418\uc9c0 \uc54a\uc74c<\/td>\n<\/tr>\n<tr style=\"background: #f8f9ff;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\ud83d\udce1 \uc2e0\ud638 \uac04\uc12d<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u2705 50Hz EMI \uc5c6\uc74c, \uc544\ub0a0\ub85c\uadf8 \uc2e0\ud638\uc5d0 \uc548\uc804\ud568<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u26a0\ufe0f 50Hz\uc758 \uc790\uae30\uc7a5\uc744 \ubc1c\uc0dd\uc2dc\ud0a4\ubbc0\ub85c, \ubc18\ub4dc\uc2dc \ub5a8\uc5b4\ub728\ub824 \ub193\uc544\uc57c \ud569\ub2c8\ub2e4.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\ud83d\udd0c 2\uc120 \ub8e8\ud504<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u2705 4-20mA 2\uc120\uc2dd \uc644\ubcbd \uc9c0\uc6d0<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u274c \uc9c0\uc6d0\ub418\uc9c0 \uc54a\uc74c, \ubcc4\ub3c4\uc758 \uc804\uc6d0 \ubc0f \uc2e0\ud638\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/td>\n<\/tr>\n<tr style=\"background: #f8f9ff;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\u26a1 \ud30c\uc6cc \ubc94\uc704<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\uc800\uc804\ub825: \uc1a1\uc2e0\uae30, \uc704\uce58 \uc870\uc808\uae30(&lt;1W, \uc77c\ubc18\uc801\uc73c\ub85c)<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\uace0\ucd9c\ub825: \ubd84\uc11d\uae30, \uc720\ub7c9\uacc4, \uc5f4 \ucd94\uc801 \uc7a5\uce58(&gt;5W)<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\ud83d\udccf \ucf00\uc774\ube14 \uac70\ub9ac<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u26a0\ufe0f 300m \uc774\uc0c1\uc5d0\uc11c\ub294 \uc804\uc555 \uac15\ud558\uac00 \uc0c1\ub2f9\ud569\ub2c8\ub2e4.<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u2705 \uc804\uc555 \uac15\ud558 \ucd5c\uc18c\ud654, \uc7a5\uac70\ub9ac \uc804\uc1a1 \uac00\ub2a5<\/td>\n<\/tr>\n<tr style=\"background: #f8f9ff;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\ud83c\udfd7\ufe0f \uc778\ud504\ub77c<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\uc9c1\ub958 \uc2a4\uc704\uce6d \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\ubc30\uc804\ubc18\uc5d0\uc11c \uc9c1\uc811 \uacf5\uae09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%); color: white; padding: 15px; border-radius: 8px; margin: 20px 0;\">\n<p style=\"margin: 0; font-weight: bold;\">\u26a0\ufe0f \uc911\uc694 \uacf5\uc9c0:<\/p>\n<p style=\"margin: 5px 0 0 0;\">\uad6c\uc5ed 0 \uc704\ud5d8 \uc9c0\uc5ed(\ud0f1\ud06c \ub0b4\ubd80, \uc9c0\uc18d\uc801\uc778 \ud3ed\ubc1c\uc131 \ubd84\uc704\uae30)\uc5d0\uc11c\ub294 \ubcf8\uc9c8 \uc548\uc804 \ubc30\ub9ac\uc5b4\uac00 \uc124\uce58\ub41c 24V DC\ub9cc \ud5c8\uc6a9\ub429\ub2c8\ub2e4. \ubcf4\ud638 \ubc29\uc2dd\uacfc \uad00\uacc4\uc5c6\uc774 \uad6c\uc5ed 0\uc5d0\uc11c\ub294 220V AC \uc0ac\uc6a9\uc774 \uc5c4\uaca9\ud788 \uae08\uc9c0\ub429\ub2c8\ub2e4.<\/p>\n<\/div>\n<h2 id=\"24vdc-design\">2. 24V DC \uc2dc\uc2a4\ud15c \uc124\uacc4<\/h2>\n<h3>\ud83d\udd27 2.1 \uc804\uc6d0 \uacf5\uae09 \uad6c\uc131<\/h3>\n<p>\uc0b0\uc5c5\uc6a9 24V DC \uc2dc\uc2a4\ud15c\uc740 \uc801\uc808\ud55c \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \uc911\uc694 \ud68c\ub85c \ubc0f SIS \uc548\uc804 \uc2dc\uc2a4\ud15c\uc758 \uacbd\uc6b0, \uc774\uc911 \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58\uac00 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n<ul>\n<li><strong>\ud83d\udd04 N+1 \uc774\uc911\ud654:<\/strong> \ub450 \uac1c\uc758 \ubcd1\ub82c \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58\ub294 \ud558\ub098\uac00 \uace0\uc7a5\ub098\ub354\ub77c\ub3c4 \uc9c0\uc18d\uc801\uc778 \uc791\ub3d9\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ud83d\udcca \uc804\ub825 \ud488\uc9c8:<\/strong> \uc0b0\uc5c5\uc6a9 \ub4f1\uae09\uc758 \ub9ac\ud50c &lt;50mV, \ub808\uade4\ub808\uc774\uc158 \u00b11% \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58<\/li>\n<li><strong>\ud83d\udd0c \uac00\uc9c0 \ubcf4\ud638:<\/strong> \ud68c\ub85c \uadf8\ub8f9\ubcc4\ub85c \ub3c5\ub9bd \ud4e8\uc988(1A\/2A)\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624. \ubaa8\ub4e0 \uacc4\uce21\uae30\ub97c \ubcf4\ud638\ub418\uc9c0 \uc54a\uc740 \ud558\ub098\uc758 \ubc84\uc2a4\uc5d0 \uc808\ub300 \uc5f0\uacb0\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624.<\/li>\n<li><strong>\ud83d\udd0b UPS \ubc31\uc5c5:<\/strong> SIS \uc2dc\uc2a4\ud15c\uc5d0\ub294 30\ubd84 \uc774\uc0c1\uc758 \ubc31\uc5c5 \uc804\ub825\uc744 \uac16\ucd98 \ubb34\uc815\uc804 \uc804\uc6d0\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h3>\ud83e\uddee 2.2 \uc804\uc555 \uac15\ud558 \uacc4\uc0b0<\/h3>\n<p>\uae34 \ucf00\uc774\ube14\uc5d0\uc11c 24V DC \uc804\uc555 \uac15\ud558\uac00 \ubc1c\uc0dd\ud558\uba74 \uacc4\uce21\uae30\uac00 \uc791\ub3d9\uc744 \uba48\ucd9c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc124\uce58 \uc804\uc5d0 \uacc4\uc0b0\ud558\uc2ed\uc2dc\uc624.<\/p>\n<div style=\"background: #f0f4ff; padding: 15px; border-radius: 8px; border-left: 4px solid #667eea; margin: 15px 0;\">\n<p style=\"margin: 0; font-weight: bold; color: #667eea;\">\uacf5\uc2dd:<\/p>\n<p style=\"margin: 5px 0 0 0; font-family: monospace;\">\u0394V = I \u00d7 (\u03c1 \u00d7 2L \u00f7 S)<\/p>\n<\/div>\n<p><strong>\uc5b4\ub514:<\/strong><br \/>\n\u03c1 = 0.0172 \u03a9\u00b7mm\u00b2\/m(\uad6c\ub9ac \uc800\ud56d\ub960)<br \/>\nL = \ud3b8\ub3c4 \uac70\ub9ac(m)<br \/>\nS = \ucf00\uc774\ube14 \ub2e8\uba74\uc801 (mm\u00b2)<br \/>\nI = \ucd5c\ub300 \uc804\ub958(A)<\/p>\n<p><strong>\ud83d\udccb \uc608\uc2dc:<\/strong> 300m \uac70\ub9ac, 0.5mm\u00b2 \ucf00\uc774\ube14, 20mA \uc1a1\uc2e0\uae30<\/p>\n<ul>\n<li>\ud68c\ub85c \uc800\ud56d: R = 0.0172 \u00d7 600 \u00f7 0.5 = <strong>20.64 \u03a9<\/strong><\/li>\n<li>\uc804\uc555 \uac15\ud558: \u0394V = 0.020 \u00d7 20.64 = <strong>0.41V<\/strong><\/li>\n<li>\uce21\uc815 \uae30\uae30\uc758 \uc804\uc555: 24V \u2013 0.41V = <strong>23.59V<\/strong> \u2705 (\ud5c8\uc6a9, \ucd5c\uc18c 12V \uc774\uc0c1)<\/li>\n<\/ul>\n<p>500m \uc774\uc0c1\uc758 \uac70\ub9ac\uc5d0\uc11c\ub294 \uc548\uc804 \uc7a5\ubcbd \uc804\uc555 \uac15\ud558\ub97c \ud3ec\ud568\ud55c \uacc4\uce21\uae30 \ucd5c\uc18c \uc804\uc555\uc744 \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>\n<h2 id=\"220vac-apps\">3. 220V AC \uc801\uc6a9 \uc2dc\ub098\ub9ac\uc624<\/h2>\n<p>220V \uad50\ub958\ub294 \uad6c\uc2dd\uc774 \uc544\ub2d9\ub2c8\ub2e4. \uace0\ucd9c\ub825 \uacc4\uce21 \uc7a5\ube44\uc5d0 \uc801\ud569\ud55c \uc120\ud0dd\uc785\ub2c8\ub2e4.<\/p>\n<h3>\ud83d\udd0c 3.1 \uc804\uc790\uae30 \uc720\ub7c9\uacc4<\/h3>\n<p>\uc5ec\uc790 \ucf54\uc77c\uc740 5~20W\uc758 \uc804\ub825\uc744 \uc18c\ubaa8\ud558\uc5ec 2\uc120\uc2dd 4-20mA \ud68c\ub85c\uc758 480mW \uc81c\ud55c\uc744 \ucd08\uacfc\ud569\ub2c8\ub2e4. 220V AC \uc804\uc6d0\uc744 \ub3c5\ub9bd\uc801\uc73c\ub85c \uc0ac\uc6a9\ud558\ub294 4\uc120\uc2dd \uad6c\uc131\uc774 \ud45c\uc900\uc785\ub2c8\ub2e4. <a href=\"https:\/\/www.yunrui-controls.com\/ko\/brands\/rosemount\/\">\ub85c\uc988\ub9c8\uc6b4\ud2b8 \uc790\uae30 \uc720\ub7c9\uacc4<\/a> \uadf8\ub9ac\uace0 <a href=\"https:\/\/www.yunrui-controls.com\/ko\/brands\/endress-hauser\/\">\uc5d4\ub4dc\ub808\uc2a4+\ud558\uc6b0\uc800 \ud504\ub85c\ub9c8\uadf8 \uc2dc\ub9ac\uc988<\/a> \uc77c\ubc18\uc801\uc73c\ub85c \uad50\ub958 \uc804\uc6d0\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h3>\ud83e\uddea 3.2 \uc628\ub77c\uc778 \ubd84\uc11d\uae30<\/h3>\n<p>pH \ubd84\uc11d\uae30, \uc0b0\uc18c \ubd84\uc11d\uae30 \ubc0f \ud06c\ub85c\ub9c8\ud1a0\uadf8\ub798\ud504\uc5d0\ub294 50~200W\uc758 \uc804\ub825\uc744 \uc18c\ubaa8\ud558\ub294 \uac00\uc5f4 \ubaa8\ub4c8, \uc0d8\ud50c \ud38c\ud504 \ubc0f \ub514\uc2a4\ud50c\ub808\uc774\uac00 \ud3ec\ud568\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc7a5\uce58\ub294 24V DC \uc804\uc6d0\uc5d0\uc11c \uc791\ub3d9\ud560 \uacbd\uc6b0 \ube44\ud604\uc2e4\uc801\uc778 \uc218\uc900\uc758 \uc804\ub958 \uc18c\ubaa8\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n<h3>\ud83d\udd25 3.3 \uc804\uae30 \uc5f4 \ucd94\uc801<\/h3>\n<p>\ucd94\uc6b4 \uae30\ud6c4 \uc9c0\uc5ed\uc5d0 \uc124\uce58\ud560 \uacbd\uc6b0 \uac00\uc5f4\uc2dd \uc784\ud384\uc2a4 \ub77c\uc778\uacfc \uc678\ud568\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \uc5f4 \ucd94\uc801 \uc2dc\uc2a4\ud15c\uc740 \uc218\ubc31 \uc640\ud2b8\uc758 \uc800\ud56d \ubd80\ud558\uc774\ubbc0\ub85c 220V AC \uc804\uc555\ub9cc \uc2e4\uc6a9\uc801\uc785\ub2c8\ub2e4.<\/p>\n<h3>\u2699\ufe0f 3.4 \ub300\ud615 \uc561\ucd94\uc5d0\uc774\ud130<\/h3>\n<p>\ud558\ub294 \ub3d9\uc548 <a href=\"https:\/\/www.yunrui-controls.com\/ko\/products\/fisher-fieldvue-dvc6200\/\">\ud53c\uc154 DVC6200 \ud3ec\uc9c0\uc154\ub108<\/a> 24V DC\ub97c \uc0ac\uc6a9\ud558\ub294 \uc804\uae30 \uc720\uc555 \uc561\ucd94\uc5d0\uc774\ud130\uc640 \uace0\ucd9c\ub825 \uc194\ub808\ub178\uc774\ub4dc \ubc38\ube0c\ub294 \ubaa8\ud130 \uad6c\ub3d9\uc744 \uc704\ud574 220V AC\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n<div style=\"background: linear-gradient(135deg, #feca57 0%, #ff9f43 100%); color: #333; padding: 15px; border-radius: 8px; margin: 20px 0;\">\n<p style=\"margin: 0; font-weight: bold;\">\u26a0\ufe0f \uc548\uc804 \uc694\uad6c \uc0ac\ud56d:<\/p>\n<p style=\"margin: 5px 0 0 0;\">220V \uad50\ub958 \uacc4\uce21\uae30\ub294 \uba74\ud5c8\ub97c \uc18c\uc9c0\ud55c \uc804\uae30 \uae30\uc220\uc790\ub9cc \uc124\uce58 \ubc0f \uc720\uc9c0\ubcf4\uc218\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc704\ud5d8 \uc9c0\uc5ed\uc6a9 \uc678\ud568\uc740 Ex d \ub610\ub294 Ex e \uc778\uc99d\uc744 \ubc1b\uc544\uc57c \ud569\ub2c8\ub2e4.<\/p>\n<\/div>\n<h2 id=\"hazardous\">4. \uc704\ud5d8 \uc9c0\uc5ed \uc804\ub825 \uacf5\uae09 \uaddc\uce59<\/h2>\n<table style=\"width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px;\">\n<tbody>\n<tr style=\"background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%); color: white;\">\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">\ubcf4\ud638 \uc720\ud615<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">\ud45c\uc2dc<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">\ud5c8\uc6a9 \uc804\uc555<\/th>\n<th style=\"padding: 12px; border: 1px solid #ddd; text-align: left;\">\uc874<\/th>\n<\/tr>\n<tr style=\"background: #fff5f5;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\ud83d\udee1\ufe0f \ubcf8\uc9c8\uc801 \uc548\uc804\uc131<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Ex ia\/ib<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u2705 24V DC \uc804\uc6a9 (\uc548\uc804 \uc7a5\ubcbd \ud3ec\ud568)<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\uad6c\uc5ed 0, 1, 2<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\ud83d\udd25 \ubc29\uc5fc<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>Ex d<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">24V DC \ub610\ub294 220V AC<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">1\uad6c\uc5ed, 2\uad6c\uc5ed<\/td>\n<\/tr>\n<tr style=\"background: #fff5f5;\">\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\u26a1 \uc548\uc804\uc131 \ud5a5\uc0c1<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\uc608<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">24V DC \ub610\ub294 220V AC<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">1\uad6c\uc5ed, 2\uad6c\uc5ed<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\ud83d\udca8 \uac00\uc555<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\"><strong>\uc608\uc2dc<\/strong><\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">\ubaa8\ub4e0 \uc804\uc555<\/td>\n<td style=\"padding: 12px; border: 1px solid #ddd;\">1\uad6c\uc5ed, 2\uad6c\uc5ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 id=\"selection\">5. \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58 \uc120\uc815 \uacfc\uc815<\/h2>\n<p>\uc62c\ubc14\ub978 \uc804\uc555 \uc120\ud0dd\uc744 \uc704\ud574 \ub2e4\uc74c \uc21c\uc11c\ub97c \ub530\ub974\uc2ed\uc2dc\uc624.<\/p>\n<div style=\"background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); padding: 20px; border-radius: 10px; margin: 20px 0;\">\n<ol style=\"margin: 0; padding-left: 20px;\">\n<li><strong>\ud83d\udcd6 \uc81c\ud488 \uc0ac\uc591\uc11c\ub97c \ud655\uc778\ud558\uc138\uc694:<\/strong> \uc81c\uc870\uc0ac\ub85c\ubd80\ud130 \ud574\ub2f9 \uae30\uae30\uc758 \uc9c0\uc6d0 \uc804\uc555 \ubc94\uc704\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/li>\n<li><strong>\ud83d\uddfa\ufe0f \uad6c\uc5ed\uc744 \uacb0\uc815\ud558\uc138\uc694:<\/strong> \uad6c\uc5ed 0 \u2192 24V DC \ubcf8\uc9c8 \uc548\uc804 \ud544\uc218; \uad6c\uc5ed 1\/2 \u2192 \uc801\uc808\ud55c \ubcf4\ud638 \uc7a5\uce58\ub97c \uac16\ucd98 \uc720\uc5f0\ud55c \uad6c\uc131<\/li>\n<li><strong>\u26a1 \uc804\ub825\uc744 \uacc4\uc0b0\ud558\uc138\uc694:<\/strong> &lt;1W \u2192 24V DC 2\uc120\uc2dd; 1-20W \u2192 24V DC 4\uc120\uc2dd; &gt;20W \u2192 220V AC<\/li>\n<li><strong>\ud83d\udee1\ufe0f SIS \uc694\uad6c \uc0ac\ud56d:<\/strong> \uc548\uc804 \uc2dc\uc2a4\ud15c\uc5d0\ub294 \uacf5\uc815 \uc804\uc6d0\uacfc \ubd84\ub9ac\ub41c \uc804\uc6a9 \ubb34\uc815\uc804 \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58(UPS)\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ud83d\udccf \uac70\ub9ac \ud655\uc778\ud558\uae30:<\/strong> 300m \uc774\uc0c1 \uc8fc\ud589 \uc2dc\uc5d0\ub294 24V DC \uc804\uc555 \uac15\ud558 \uacc4\uc0b0\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/li>\n<li><strong>\ud83c\udfaf \ud45c\uc900\ud654:<\/strong> \uacf5\uc815 \uc7a5\uce58\ubcc4\ub85c \uc77c\uad00\ub41c \uc804\uc555\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc608\ube44 \ubd80\ud488 \ubc0f \uc720\uc9c0 \ubcf4\uc218\ub97c \uac04\uc18c\ud654\ud558\uc2ed\uc2dc\uc624.<\/li>\n<\/ol>\n<\/div>\n<h2 id=\"mistakes\">6. \ud754\ud788 \ubc1c\uc0dd\ud558\ub294 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \uc2e4\uc218<\/h2>\n<div style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin: 20px 0;\">\n<div style=\"background: #ffeaa7; padding: 15px; border-radius: 8px; border-left: 4px solid #fdcb6e;\">\n<p style=\"margin: 0; font-weight: bold; color: #d63031;\">\u274c \uc9c1\ub958 \uadf9\uc131 \ubc18\uc804<\/p>\n<p style=\"margin: 5px 0 0 0; font-size: 13px;\">\uc5ed\uadf9\uc131 \ubcf4\ud638 \uae30\ub2a5\uc774 \uc5c6\ub294 \uacc4\uce21\uae30\ub294 \uc601\uad6c\uc801\uc73c\ub85c \uace0\uc7a5\ub0a9\ub2c8\ub2e4. \uc591\uadf9\uc5d0\ub294 \ube68\uac04\uc0c9, \uc74c\uadf9\uc5d0\ub294 \ud30c\ub780\uc0c9\/\uac80\uc740\uc0c9\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/p>\n<\/div>\n<div style=\"background: #fab1a0; padding: 15px; border-radius: 8px; border-left: 4px solid #e17055;\">\n<p style=\"margin: 0; font-weight: bold; color: #d63031;\">\u274c \ud63c\ud569 \ucf00\uc774\ube14 \ubc30\uc120<\/p>\n<p style=\"margin: 5px 0 0 0; font-size: 13px;\">220V AC \ucf00\uc774\ube14\uacfc 24V DC \ucf00\uc774\ube14\uc740 \ub3d9\uc77c\ud55c \uc804\uc120\uad00\uc5d0 \uc124\uce58\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4. \ucd5c\uc18c 200mm\uc758 \uac04\uaca9\uc744 \uc720\uc9c0\ud558\uc2ed\uc2dc\uc624.<\/p>\n<\/div>\n<div style=\"background: #74b9ff; padding: 15px; border-radius: 8px; border-left: 4px solid #0984e3;\">\n<p style=\"margin: 0; font-weight: bold; color: #2d3436;\">\u274c \uc811\uc9c0 \ud63c\ub780<\/p>\n<p style=\"margin: 5px 0 0 0; font-size: 13px;\">DC \ub124\uac70\ud2f0\ube0c \ub2e8\uc790\ub294 \ud50c\ub85c\ud305 \ub610\ub294 \uc811\uc9c0 \ubc29\uc2dd \uc911 \ud558\ub098\ub97c \uc120\ud0dd\ud574\uc57c \ud558\uba70, \uc808\ub300\ub85c \ud63c\ud569\ud574\uc11c \uc0ac\uc6a9\ud558\uc9c0 \ub9c8\uc2ed\uc2dc\uc624.<\/p>\n<\/div>\n<div style=\"background: #a29bfe; padding: 15px; border-radius: 8px; border-left: 4px solid #6c5ce7;\">\n<p style=\"margin: 0; font-weight: bold; color: #2d3436;\">\u274c \uac00\uc9c0 \ubcf4\ud638 \uae30\ub2a5 \uc5c6\uc74c<\/p>\n<p style=\"margin: 5px 0 0 0; font-size: 13px;\">\ubcf4\ud638\ub418\uc9c0 \uc54a\uc740 \ubc84\uc2a4\uc5d0\uc11c \ub2e8\ub77d\uc774 \ubc1c\uc0dd\ud558\uba74 \ubaa8\ub4e0 \uacc4\uce21\uae30\uac00 \uc791\ub3d9\uc744 \uba48\ucda5\ub2c8\ub2e4. 5~10\uac1c \uae30\uae30\ub9c8\ub2e4 \ud4e8\uc988\ub97c \uc124\uce58\ud558\uc2ed\uc2dc\uc624.<\/p>\n<\/div>\n<\/div>\n<h2>\uc694\uc57d<\/h2>\n<p>\uc5b4\ub5a4 \uc804\uc555\ub3c4 \ubaa8\ub4e0 \uacbd\uc6b0\uc5d0 \ubcf4\ud3b8\uc801\uc73c\ub85c \uc6b0\uc6d4\ud558\ub2e4\uace0 \ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. <strong>24V DC\uc640 220V AC \uacc4\uce21\uae30 \uc804\uc6d0 \uacf5\uae09 \uc7a5\uce58 \ube44\uad50<\/strong>. \uc62c\ubc14\ub978 \uc120\ud0dd\uc740 \uc801\uc6a9 \uc694\uac74\uc5d0 \ub530\ub77c \ub2e4\ub985\ub2c8\ub2e4.<\/p>\n<ul>\n<li><strong>\u2705 24V DC:<\/strong> \ud45c\uc900 <a href=\"https:\/\/www.yunrui-controls.com\/ko\/product_cat\/transmitters\/pressure-transmitters\/\">\uc555\ub825 \ud2b8\ub79c\uc2a4\ubbf8\ud130<\/a>, <a href=\"https:\/\/www.yunrui-controls.com\/ko\/product_cat\/transmitters\/temperature-transmitters\/\">\uc628\ub3c4 \ud2b8\ub79c\uc2a4\ubbf8\ud130<\/a>, <a href=\"https:\/\/www.yunrui-controls.com\/ko\/product_cat\/valve-positioners\/\">\ubc38\ube0c \ud3ec\uc9c0\uc154\ub108<\/a>, \ubc0f \uc218\ud3c9\uacc4. \uc548\uc804\uc131, \uac04\uc12d \ubc29\uc9c0 \ubc0f \ubcf8\uc9c8 \uc548\uc804 \ud638\ud658\uc131\uc774 \ub6f0\uc5b4\ub098 \uc120\ud638\ub429\ub2c8\ub2e4.<\/li>\n<li><strong>\u2705 220V AC:<\/strong> \ud544\uc218 \uc0ac\ud56d <a href=\"https:\/\/www.yunrui-controls.com\/ko\/product_cat\/flow-meters\/electromagnetic-flow-meters\/\">\uc804\uc790\uae30 \uc720\ub7c9\uacc4<\/a>, \uc628\ub77c\uc778 \ubd84\uc11d\uae30, \uc5f4 \ucd94\uc801 \uc7a5\uce58 \ubc0f \ub300\ud615 \uc561\ucd94\uc5d0\uc774\ud130 \ub4f1\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4. \uc9c1\uc811 \uc804\ub825\ub9dd \uc5f0\uacb0\ub85c DC \uc778\ud504\ub77c\uac00 \ud544\uc694 \uc5c6\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\ud83d\udee1\ufe0f \uc704\ud5d8 \uc9c0\uc5ed:<\/strong> \uad6c\uc5ed 0\uc740 \uc548\uc804 \uc7a5\ubcbd\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc804\uc555\uc744 24V DC\ub85c \uc81c\ud55c\ud569\ub2c8\ub2e4. \uad6c\uc5ed 1\/2\uc740 \ubc29\ud3ed\ud615 \ub610\ub294 \uac15\ud654\ub41c \uc548\uc804 \uc678\ud568\uc744 \uc0ac\uc6a9\ud558\uc5ec 220V AC\ub97c \ud5c8\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>\uad00\ub828 \uae00<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.yunrui-controls.com\/ko\/4-20ma-signal-industrial-automation\/\">\uc0b0\uc5c5 \uc790\ub3d9\ud654\uc5d0\uc11c\uc758 4-20mA \uc2e0\ud638: \uc6d0\ub9ac \ubc0f \ubb38\uc81c \ud574\uacb0<\/a><\/li>\n<li><a href=\"https:\/\/www.yunrui-controls.com\/ko\/fisher-dvc6200-dvc2000-feedback-troubleshooting\/\">Fisher DVC6200\/DVC2000 \ud53c\ub4dc\ubc31 \uc2e0\ud638 \ubb38\uc81c \ud574\uacb0<\/a><\/li>\n<li><a href=\"https:\/\/www.yunrui-controls.com\/ko\/valve-positioner-working-principle-troubleshooting\/\">\ubc38\ube0c \ud3ec\uc9c0\uc154\ub108 \uc644\ubcbd \uac00\uc774\ub4dc: \uc791\ub3d9 \uc6d0\ub9ac + \ud604\uc7a5 \ubb38\uc81c \ud574\uacb0<\/a><\/li>\n<li><a href=\"https:\/\/www.yunrui-controls.com\/ko\/control-valve-cv-calculation-actuator-sizing\/\">\uc561\ucd94\uc5d0\uc774\ud130 \uc120\uc815 \ubc0f \ubc38\ube0c \ud06c\uae30 \uacb0\uc815: \uacf5\ud559\uc801 \uacc4\uc0b0 \ubc29\ubc95<\/a><\/li>\n<li><a href=\"https:\/\/www.yunrui-controls.com\/ko\/radar-level-transmitter-frequency-guide\/\">\ub808\uc774\ub354 \ub808\ubca8 \ud2b8\ub79c\uc2a4\ubbf8\ud130 \uc8fc\ud30c\uc218 \uc548\ub0b4<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Choosing between 24V DC and 220V AC instrument power supply is a critical decision in industrial automation. The wrong voltage can create safety hazards, signal interference, or equipment failure. This guide explains when to use 24V DC versus 220V AC for industrial instruments, with practical selection criteria for real field applications. Quick Navigation: Comparison | [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8444,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":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":"default","adv-header-id-meta":"","stick-header-meta":"default","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":"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":"","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-4)","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-4)","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-4)","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":[384,1],"tags":[],"class_list":["post-8443","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-blogs"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>24V DC vs 220V AC Instrument Power Supply - YUNRUI<\/title>\n<meta name=\"description\" content=\"echnical guide for selecting 24V DC or 220V AC power supplies for industrial instruments. 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