{"id":1589,"date":"2024-12-28T14:34:33","date_gmt":"2024-12-28T06:34:33","guid":{"rendered":"https:\/\/led.amasly.com\/?p=1589"},"modified":"2024-12-28T14:52:01","modified_gmt":"2024-12-28T06:52:01","slug":"the-relevant-requirements-for-grounding-of-explosion-proof-lamps-and-electrical-equipment-in-explosive-hazardous-environments","status":"publish","type":"post","link":"https:\/\/led.amasly.com\/pt\/explosion-proof-equipment\/the-relevant-requirements-for-grounding-of-explosion-proof-lamps-and-electrical-equipment-in-explosive-hazardous-environments\/","title":{"rendered":"Os requisitos relevantes para a liga\u00e7\u00e3o \u00e0 terra de l\u00e2mpadas \u00e0 prova de explos\u00e3o e de equipamento el\u00e9trico em ambientes explosivos perigosos."},"content":{"rendered":"

Em ambientes com risco de explos\u00e3o, as partes met\u00e1licas n\u00e3o carregadas expostas do equipamento el\u00e9trico, tais como os inv\u00f3lucros met\u00e1licos, as estruturas met\u00e1licas, o equipamento instalado em estruturas met\u00e1licas ligadas \u00e0 terra, as tubagens met\u00e1licas e os seus acess\u00f3rios, as condutas de prote\u00e7\u00e3o dos cabos e as bainhas met\u00e1licas dos cabos, etc., devem ser ligadas \u00e0 terra. Muitas normas estabeleceram regulamentos claros sobre os requisitos de liga\u00e7\u00e3o \u00e0 terra para o equipamento el\u00e9trico em ambientes explosivos perigosos. <\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

As configura\u00e7\u00f5es do fio de terra para equipamento el\u00e9trico devem ser tratadas de forma diferente de acordo com as diferentes \u00e1reas perigosas e tipos de equipamento el\u00e9trico. Os inv\u00f3lucros met\u00e1licos de todos os equipamentos el\u00e9ctricos em ambientes explosivos, independentemente de estarem instalados em estruturas met\u00e1licas ligadas \u00e0 terra, devem ser ligados \u00e0 terra. Os requisitos relevantes s\u00e3o os seguintes: <\/p>\n\n\n\n

1) Todos os equipamentos el\u00e9ctricos em ambientes explosivos da Zona 1, Zona 20 e Zona 21, bem como todos os equipamentos el\u00e9ctricos, exceto dispositivos de ilumina\u00e7\u00e3o em ambientes explosivos da Zona 2 e Zona 22, devem ter fios de liga\u00e7\u00e3o \u00e0 terra dedicados. Nota: Se o fio de liga\u00e7\u00e3o \u00e0 terra dedicado for colocado na mesma conduta de prote\u00e7\u00e3o que o fio de fase, deve ter o mesmo n\u00edvel de isolamento que o fio de fase. <\/p>\n\n\n\n

2) Para dispositivos de ilumina\u00e7\u00e3o em ambientes explosivos Zona 2 e Zona 22, pode ser utilizado um sistema de tubagem met\u00e1lica de liga\u00e7\u00e3o el\u00e9ctrica fi\u00e1vel como fio de liga\u00e7\u00e3o \u00e0 terra, mas n\u00e3o podem ser utilizadas tubagens para o transporte de subst\u00e2ncias perigosas explosivas. <\/p>\n\n\n\n

3) Os fios de liga\u00e7\u00e3o \u00e0 terra dedicados ao equipamento el\u00e9trico e aos dispositivos de ilumina\u00e7\u00e3o devem ser ligados separadamente \u00e0 rede principal de liga\u00e7\u00e3o \u00e0 terra e o fio neutro de trabalho no circuito el\u00e9trico n\u00e3o deve ser utilizado como fio de liga\u00e7\u00e3o \u00e0 terra de prote\u00e7\u00e3o. <\/p>\n\n\n\n

4) A liga\u00e7\u00e3o entre o equipamento el\u00e9trico em ambientes com risco de explos\u00e3o e o fio de terra deve utilizar de prefer\u00eancia fios flex\u00edveis multifilares, com a \u00e1rea m\u00ednima da sec\u00e7\u00e3o transversal do fio de cobre n\u00e3o inferior a 4 mm\u00b2. Devem ser instalados tubos de prote\u00e7\u00e3o nas partes suscept\u00edveis de sofrerem danos mec\u00e2nicos. <\/p>\n\n\n\n

5) Quando os cabos blindados s\u00e3o introduzidos no equipamento el\u00e9trico, o fio de liga\u00e7\u00e3o \u00e0 terra deve ser ligado ao parafuso de liga\u00e7\u00e3o \u00e0 terra no interior do equipamento; a fita de a\u00e7o e a caixa met\u00e1lica devem ser ligadas ao parafuso de liga\u00e7\u00e3o \u00e0 terra exterior do equipamento. <\/p>\n\n\n\n

6) Os parafusos utilizados para liga\u00e7\u00e3o \u00e0 terra ou liga\u00e7\u00e3o zero em ambientes com risco de explos\u00e3o devem ter dispositivos anti-afrouxamento; antes de apertar o fio de liga\u00e7\u00e3o \u00e0 terra, os terminais de liga\u00e7\u00e3o \u00e0 terra e os fixadores devem ser revestidos com massa lubrificante composta de pot\u00eancia. <\/p>\n\n\n\n

Existem muitos requisitos de liga\u00e7\u00e3o \u00e0 terra para o equipamento el\u00e9trico em ambientes com risco de explos\u00e3o. No processo de conce\u00e7\u00e3o e instala\u00e7\u00e3o, para al\u00e9m de cumprir os requisitos acima referidos, devem tamb\u00e9m ser seguidas as normas relevantes.<\/p>","protected":false},"excerpt":{"rendered":"

In explosive hazardous environments, the exposed non-charged metal parts of electrical equipment such as the metal enclosures, metal frameworks, equipment installed on grounded metal structures, metal piping and its fittings, cable protection conduits, and the metal sheaths of cables, etc., should all be grounded. Many standards have made clear regulations on the grounding requirements for […]<\/p>\n","protected":false},"author":1,"featured_media":1590,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","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":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","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-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":"","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-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":"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":""},"mobile":{"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":""}},"footnotes":""},"categories":[8],"tags":[],"class_list":["post-1589","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-explosion-proof-equipment"],"uagb_featured_image_src":{"full":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/grounding-of-explosion-proof-lamps.png",469,305,false],"thumbnail":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/grounding-of-explosion-proof-lamps-150x150.png",150,150,true],"medium":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/grounding-of-explosion-proof-lamps-300x195.png",300,195,true],"medium_large":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/grounding-of-explosion-proof-lamps.png",469,305,false],"large":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/grounding-of-explosion-proof-lamps.png",469,305,false],"1536x1536":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/grounding-of-explosion-proof-lamps.png",469,305,false],"2048x2048":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/grounding-of-explosion-proof-lamps.png",469,305,false],"trp-custom-language-flag":["https:\/\/led.amasly.com\/wp-content\/uploads\/2024\/12\/grounding-of-explosion-proof-lamps.png",18,12,false]},"uagb_author_info":{"display_name":"Joe","author_link":"https:\/\/led.amasly.com\/pt\/author\/jacklin\/"},"uagb_comment_info":0,"uagb_excerpt":"In explosive hazardous environments, the exposed non-charged metal parts of electrical equipment such as the metal enclosures, metal frameworks, equipment installed on grounded metal structures, metal piping and its fittings, cable protection conduits, and the metal sheaths of cables, etc., should all be grounded. Many standards have made clear regulations on the grounding requirements for…","_links":{"self":[{"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/posts\/1589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/comments?post=1589"}],"version-history":[{"count":1,"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/posts\/1589\/revisions"}],"predecessor-version":[{"id":1591,"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/posts\/1589\/revisions\/1591"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/media\/1590"}],"wp:attachment":[{"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/media?parent=1589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/categories?post=1589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/led.amasly.com\/pt\/wp-json\/wp\/v2\/tags?post=1589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}