{"id":478,"date":"2024-08-11T16:08:29","date_gmt":"2024-08-11T14:08:29","guid":{"rendered":"https:\/\/gezhi-tech.com\/?p=478"},"modified":"2025-09-27T17:50:23","modified_gmt":"2025-09-27T15:50:23","slug":"clause-3-how-to-understand-the-definition-of-class-0-appliance","status":"publish","type":"post","link":"https:\/\/gezhi-tech.com\/ro\/clause-3-how-to-understand-the-definition-of-class-0-appliance\/","title":{"rendered":"Clauza 3 \u2013 Cum s\u0103 \u00een\u021belege\u021bi defini\u021bia \u201eaparatului de clasa 0\u201d"},"content":{"rendered":"aparat clasa 0: aparat \u00een care protec\u021bia \u00eempotriva \u0219ocurilor electrice se bazeaz\u0103 numai pe izola\u021bia de baz\u0103, neexist\u00e2nd mijloace de conectare a p\u0103r\u021bilor conductoare accesibile, dac\u0103 exist\u0103, la conductorul de protec\u021bie din cablajul fix al instala\u021biei, \u00eencredere \u00een cazul o defec\u021biune a izola\u021biei de baz\u0103 fiind plasat\u0103 asupra mediului.<br><em>NOT\u0102 Aparatele din clasa 0 au fie o carcas\u0103 din material izolator care poate forma o parte sau \u00eentreaga izola\u021bie de baz\u0103, fie o carcas\u0103 metalic\u0103 care este separat\u0103 de p\u0103r\u021bile sub tensiune printr-o izola\u021bie adecvat\u0103. Dac\u0103 un aparat cu o carcas\u0103 din material izolator are prevederi pentru \u00eemp\u0103m\u00e2ntarea p\u0103r\u021bilor interioare, este considerat a fi un aparat de clasa I sau un aparat de clasa 0I.<\/em><br>\nAcest tip de aparat nu are dispozitiv de \u00eemp\u0103m\u00e2ntare de protec\u021bie \u0219i, \u00een acela\u0219i timp, un singur strat de izola\u021bie \u00eenf\u0103\u0219oar\u0103 p\u0103r\u021bile sub tensiune sau se folose\u0219te un strat de izola\u021bie pentru a izola utilizatorul de p\u0103r\u021bile sub tensiune. Majoritatea \u021b\u0103rilor nu accept\u0103 aparate din clasa 0. Doar unele \u021b\u0103ri cu o tensiune de re\u021bea (tensiune nominal\u0103) de 100 V, cum ar fi Japonia \u0219i 120 V, cum ar fi Statele Unite \u0219i Mexic, accept\u0103 aparate din clasa 0. Este necesar s\u0103 men\u021bion\u0103m aici c\u0103, pentru a ob\u021bine aceea\u0219i putere de intrare (de exemplu, un \u00eenc\u0103lzitor de camer\u0103 cu o putere nominal\u0103 de intrare de 3000W), cu c\u00e2t tensiunea nominal\u0103 este mai mic\u0103, cu at\u00e2t va fi mai mare curentul de lucru corespunz\u0103tor. Dimpotriv\u0103, dac\u0103 tensiunea nominal\u0103 este mare, curentul de intrare corespunz\u0103tor va fi sc\u0103zut. \u00cen cazul unui curent ridicat, \u00eenc\u0103lzirea pieselor purt\u0103toare de curent din produs va fi mai grav\u0103, iar posibilitatea corespunz\u0103toare de incendiu va fi mai mare, astfel \u00eenc\u00e2t cerin\u021bele de protec\u021bie \u00eempotriva incendiilor vor fi mai stricte. \u00cen cazul curentului sc\u0103zut \u0219i al tensiunii \u00eenalte, \u00eenc\u0103lzirea pieselor purt\u0103toare de curent nu este grav\u0103, dar din cauza tensiunii \u00eenalte, posibilitatea de defectare a izola\u021biei devine mai mare, iar cerin\u021bele corespunz\u0103toare anti-\u0219oc electric sunt mai stricte. Acesta este motivul pentru care seria de standarde IEC 60335 are cerin\u021be at\u00e2t de \u00eenalte pentru protec\u021bia \u00eempotriva \u0219ocurilor electrice. Principalii scriitori ai standardului IEC 60335 sunt exper\u021bi din \u021b\u0103ri cu o tensiune nominal\u0103 de 220-240V, \u00een timp ce seria de standarde UL din SUA are cerin\u021be \u0219i mai stricte pentru protec\u021bia \u00eempotriva incendiilor. \u00cen mod normal, nu exist\u0103 un astfel de dispozitiv \u00een care toate piesele sub tensiune s\u0103 fie protejate doar prin izola\u021bie de baz\u0103. Este obi\u0219nuit ca majoritatea m\u0103sur\u0103torilor de protec\u021bie \u00eempotriva \u0219ocurilor electrice s\u0103 poat\u0103 \u00eendeplini \u00een continuare cerin\u021bele de izolare dubl\u0103 sau izola\u021bie \u00eent\u0103rit\u0103. Desigur, exist\u0103 \u0219i izola\u021bie de baz\u0103 plus structuri de protec\u021bie la \u00eemp\u0103m\u00e2ntare. Situa\u021bia obi\u0219nuit\u0103 este aceea c\u0103 exist\u0103 un singur strat de manta de s\u00e2rm\u0103 pe cablul de alimentare, iar nivelul de protec\u021bie al dispozitivului este determinat de izola\u021bia de baz\u0103 a cablului de alimentare, adic\u0103 cel mai sc\u0103zut nivel de protec\u021bie din clasa 0.<br>\n<br>\nUrm\u0103toarele dou\u0103 imagini arat\u0103 informa\u021biile despre cablul de alimentare pentru aparatul de clasa 0. Unul prezint\u0103 schema schematic\u0103, iar cel\u0103lalt arat\u0103 cablul de alimentare cu \u0219techer.<br>\n<style>\/*! elementor - v3.23.0 - 05-08-2024 *\/<br \/><br>\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px} .elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style><br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/AC-power-supply-2-Prong-male-female-extension-Cord-cable-US-plug-NEMA-1-15P-To-1024x1024.webp\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/AC-power-supply-2-Prong-male-female-extension-Cord-cable-US-plug-NEMA-1-15P-To-1024x1024.webp 1024w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/AC-power-supply-2-Prong-male-female-extension-Cord-cable-US-plug-NEMA-1-15P-To-300x300.webp 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/AC-power-supply-2-Prong-male-female-extension-Cord-cable-US-plug-NEMA-1-15P-To-150x150.webp 150w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/AC-power-supply-2-Prong-male-female-extension-Cord-cable-US-plug-NEMA-1-15P-To-768x768.webp 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/AC-power-supply-2-Prong-male-female-extension-Cord-cable-US-plug-NEMA-1-15P-To-1536x1536.webp 1536w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/AC-power-supply-2-Prong-male-female-extension-Cord-cable-US-plug-NEMA-1-15P-To-2048x2048.webp 2048w\" alt=\"\" width=\"1024\" height=\"1024\" \/><br>\n<br \/><br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/supply-cord-with-plug.png\" sizes=\"auto, (max-width: 641px) 100vw, 641px\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/supply-cord-with-plug.png 641w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/supply-cord-with-plug-300x263.png 300w\" alt=\"\" width=\"641\" height=\"562\" \/><br>\n<br \/><br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/supply-cord-for-Japan-diagram-1024x100.png\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/supply-cord-for-Japan-diagram-1024x100.png 1024w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/supply-cord-for-Japan-diagram-300x29.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/supply-cord-for-Japan-diagram-768x75.png 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/supply-cord-for-Japan-diagram.png 1182w\" alt=\"\" width=\"1024\" height=\"100\" \/><br>\n<br>\nFigura urm\u0103toare este o diagram\u0103 schematic\u0103 a unui aparat de clasa 0. Efectul nu este foarte evident. Trebuie s\u0103-l compara\u021bi cu diagramele schematice ale aparatului de clasa I \u0219i ale aparatului de clasa II pentru a verifica<br>\n<br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-II-appliance-1.png\" sizes=\"auto, (max-width: 778px) 100vw, 778px\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-II-appliance-1.png 778w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-II-appliance-1-300x146.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-II-appliance-1-768x373.png 768w\" alt=\"\" width=\"778\" height=\"378\" \/><br>\n<br \/><br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-I-appliance-1.png\" sizes=\"auto, (max-width: 773px) 100vw, 773px\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-I-appliance-1.png 773w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-I-appliance-1-300x161.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-I-appliance-1-768x411.png 768w\" alt=\"\" width=\"773\" height=\"414\" \/><br>\n<br \/><br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0I-appliance-1-1024x396.png\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0I-appliance-1-1024x396.png 1024w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0I-appliance-1-300x116.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0I-appliance-1-768x297.png 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0I-appliance-1.png 1134w\" alt=\"\" width=\"1024\" height=\"396\" \/><br>\n<br \/><br>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0-appliance-1-1024x277.png\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0-appliance-1-1024x277.png 1024w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0-appliance-1-300x81.png 300w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0-appliance-1-768x208.png 768w, https:\/\/gezhi-tech.com\/wp-content\/uploads\/2024\/08\/class-0-appliance-1.png 1361w\" alt=\"\" width=\"1024\" height=\"277\" \/><br>","protected":false},"excerpt":{"rendered":"<p>aparat clasa 0: aparat \u00een care protec\u021bia \u00eempotriva \u0219ocurilor electrice se bazeaz\u0103 numai pe izola\u021bia de baz\u0103, neexist\u00e2nd mijloace de conectare a p\u0103r\u021bilor conductoare accesibile, dac\u0103 exist\u0103, la conductorul de protec\u021bie din cablajul fix al instala\u021biei, \u00eencredere \u00een cazul o defec\u021biune a izola\u021biei de baz\u0103 fiind plasat\u0103 asupra mediului.NOT\u0102 Aparatele din clasa 0 au fie&#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":[74,80,76,105,59,56,77],"class_list":["post-478","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-relies-upon-basic-insulation-only-there-being-no-means-for-the-connection-of-conductive-accessible-parts-if-any-to-the-protective-conductor-in-t","tag-insulation-system-comprising-both-basic-insulation-and-supplementary-insulation","tag-conductor-or-conductive-part-intended-to-be-energized-in-normal-use-including-a-neutral-conductor-but-by-convention-not-a-pen-conductor","tag-power-input-assigned-to-the-appliance-by-the-manufacturer","tag-voltage-assigned-to-the-appliance-by-the-manufacturer","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"],"translation":{"provider":"WPGlobus","version":"3.0.1","language":"ro","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\/ro\/wp-json\/wp\/v2\/posts\/478","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/comments?post=478"}],"version-history":[{"count":44,"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/posts\/478\/revisions"}],"predecessor-version":[{"id":2067,"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/posts\/478\/revisions\/2067"}],"wp:attachment":[{"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/media?parent=478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/categories?post=478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gezhi-tech.com\/ro\/wp-json\/wp\/v2\/tags?post=478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}