{"id":374798,"date":"2024-10-20T02:40:25","date_gmt":"2024-10-20T02:40:25","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-61472-22021\/"},"modified":"2024-10-26T04:39:43","modified_gmt":"2024-10-26T04:39:43","slug":"bs-en-iec-61472-22021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-61472-22021\/","title":{"rendered":"BS EN IEC 61472-2:2021"},"content":{"rendered":"<p>IEC 61472-2:2021 specifies a method for determining the electrical component of the minimum approach distances for live working, for AC systems 1 kV up to and including 72,5 kV. This document addresses system overvoltages and the working air distances between equipment and\/or workers at different potentials. The withstand voltage and minimum approach distances determined by the method described in this document can be used only if the following working conditions prevail: <\/p>\n<ul>\n<li>workers are trained for, and skilled in, working live lines or close to live conductors or equipment;<\/li>\n<li>the operating conditions are adjusted so that the statistical overvoltage does not exceed the value selected for the determination of the required withstand voltage;<\/li>\n<li>transient overvoltages are the determining overvoltages;<\/li>\n<li>tool insulation has no continuous film of moisture present on the surface;<\/li>\n<li>no lightning is observed within 10 km of the work site;<\/li>\n<li>allowance is made for the effect of the conducting components of tools.<\/li>\n<\/ul>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>undefined  <\/td>\n<\/tr>\n<tr>\n<td><b>6<b><\/td>\n<td>European foreword <br \/> Endorsement notice  <\/td>\n<\/tr>\n<tr>\n<td><b>7<b><\/td>\n<td>English <br \/> CONTENTS  <\/td>\n<\/tr>\n<tr>\n<td><b>8<b><\/td>\n<td>FOREWORD  <\/td>\n<\/tr>\n<tr>\n<td><b>10<b><\/td>\n<td>1 Scope <br \/> 2 Normative references <br \/> 3 Terms and definitions  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>4 Minimum approach distance, DA  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>5 Factors influencing the minimum approach distance <br \/> 5.1 Control of system overvoltages <br \/> 5.2 Statistical overvoltage  <\/td>\n<\/tr>\n<tr>\n<td><b>13<b><\/td>\n<td>5.3 Conductive floating object <br \/> 5.4 Insulators <br \/> 5.5 Determination of minimum electrical distance, DU <br \/> 6 Example calculation  <\/td>\n<\/tr>\n<tr>\n<td><b>14<b><\/td>\n<td>Table 1 \u2013 Distance for rod-to-rod gap from IEEE 516-2009 <br \/> Table 2 \u2013 Phase-to-earth electrical distance for system voltagesfrom 1,0 kV up to and including 72,5 kV, ue2 = 3,5  <\/td>\n<\/tr>\n<tr>\n<td><b>15<b><\/td>\n<td>Table 3 \u2013 Phase-to-phase electrical distances for system voltagesfrom 1,0 kV up to and including 72,5 kV, up2 = 5,2  <\/td>\n<\/tr>\n<tr>\n<td><b>16<b><\/td>\n<td>Annex A (informative)Overvoltages <br \/> A.1 General <br \/> A.2 Highest voltage of a system <br \/> A.3 Temporary overvoltage  <\/td>\n<\/tr>\n<tr>\n<td><b>17<b><\/td>\n<td>A.4 Transient overvoltage <br \/> A.4.1 General <br \/> A.4.2 Switching overvoltage  <\/td>\n<\/tr>\n<tr>\n<td><b>18<b><\/td>\n<td>A.4.3 Lightning overvoltages  <\/td>\n<\/tr>\n<tr>\n<td><b>19<b><\/td>\n<td>Annex B (informative)Ergonomic considerations  <br \/> B.1 General <br \/> B.2 Training, knowledge and skill <br \/> B.3 Protective barriers <br \/> B.4 Possibility of error <br \/> B.5 Work procedure  <\/td>\n<\/tr>\n<tr>\n<td><b>20<b><\/td>\n<td>B.6 Personal factors <br \/> B.7 Monitoring  <\/td>\n<\/tr>\n<tr>\n<td><b>21<b><\/td>\n<td>Bibliography  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Live working. Minimum approach distances &#8211; Method of determination of the electrical component distance for AC systems from 1,0 kV to 72,5 kV<\/b><\/p>\n<table class=\"shortdes-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\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2021<\/td>\n<td>22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":374808,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-374798","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","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\/374798","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\/374808"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=374798"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=374798"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=374798"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}