{"id":694911,"date":"2024-11-06T05:37:59","date_gmt":"2024-11-06T05:37:59","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ul-80079-20-22020\/"},"modified":"2024-11-06T05:37:59","modified_gmt":"2024-11-06T05:37:59","slug":"ul-80079-20-22020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ul\/ul-80079-20-22020\/","title":{"rendered":"UL 80079-20-2:2020"},"content":{"rendered":"<p><b>1 Scope<\/b><\/p>\n<p id=\"ThisPartOfISOIEC80079DescribesTheTe-FB52B770\"> <title>Modification of Clause 1 to replace with the following:<\/title> <\/p>\n<p>This <\/p>\n<p>standard<\/p>\n<p>part of ISO\/IEC 80079<\/p>\n<p> describes the test methods for the identification of combustible dust and combustible dust layers in order to permit classification of areas where such materials exist for the purpose of the proper selection and installation of electrical and mechanical equipment for use in the presence of combustible dust <\/p>\n<p>in accordance with the National Electrical Code, NFPA 70<\/p>\n<p>.<\/p>\n<p>The standard atmospheric conditions for determination of characteristics of combustible dusts are:<\/p>\n<p>\u2022\ttemperature \u201320 \u00b0C to +60 \u00b0C,<\/p>\n<p>\u2022\tpressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar) and<\/p>\n<p>\u2022\tair with normal oxygen content, typically 21 % v\/v.<\/p>\n<p>The test methods defined do not apply to:<\/p>\n<p>\u2022\trecognized explosives, propellants (e.g. gunpowder, dynamite), or substances or mixtures of substances which may, under some circumstances, behave in a similar manner or<\/p>\n<p>\u2022\tdusts of explosives and propellants that do not require atmospheric oxygen for combustion, or to pyrophoric substances.<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Explosive Atmospheres &#8211; Part 20-2: Material Characteristics &#8211; Combustible Dusts Test Methods<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/ul\/\"><b>UL<\/b><\/a><\/td>\n<td>2020-09-10<\/td>\n<td>65<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":694921,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2680],"product_tag":[],"class_list":{"0":"post-694911","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ul","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/694911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/694921"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=694911"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=694911"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=694911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}