{"id":440089,"date":"2024-10-20T08:12:54","date_gmt":"2024-10-20T08:12:54","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-60068-3-12023\/"},"modified":"2024-10-26T15:21:48","modified_gmt":"2024-10-26T15:21:48","slug":"bs-en-iec-60068-3-12023","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-60068-3-12023\/","title":{"rendered":"BS EN IEC 60068-3-1:2023"},"content":{"rendered":"

IEC 60068-3-1:2023 is available as IEC 60068-3-1:2023 RLV<\/span> which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60068-3-1:2023 provides guidance regarding the performance of cold and dry heat tests. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) information relating to specimen temperatures has been revised; b) information relating to tests of multiple specimens has been revised; c) the effect of air density has been added; d) a recommendation for corrective actions regarding IR radiation has been added; e) the requirements for the mounting and supports of the specimen have been revised.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nEuropean foreword
Endorsement notice <\/td>\n<\/tr>\n
5<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
6<\/td>\nFOREWORD <\/td>\n<\/tr>\n
8<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
9<\/td>\n4 Selection of test procedures
4.1 General background
4.1.1 General
4.1.2 Ambient temperature
4.1.3 Specimen temperatures
4.1.4 Non heat-dissipating specimens
4.1.5 Heat-dissipating specimens <\/td>\n<\/tr>\n
10<\/td>\n4.2 Mechanisms of heat transfer
4.2.1 Convection <\/td>\n<\/tr>\n
11<\/td>\nFigure 1 \u2013 Experimental data on the effect of airflow on the surface temperature of a wire-wound resistor \u2013 Radial airflow <\/td>\n<\/tr>\n
12<\/td>\nFigure 2 \u2013 Experimental data on the effect of airflow on the surface temperature of a wire-wound resistor \u2013 Axial airflow <\/td>\n<\/tr>\n
13<\/td>\n4.2.2 Radiation
Figure 3 \u2013 Temperature distribution on a cylinder with homogeneous heat generationin airflow of velocities (0,5, 1 and 2) m \u00b7 s\u22121 <\/td>\n<\/tr>\n
14<\/td>\n4.2.3 Thermal conduction
4.2.4 Forced air circulation
4.3 Test chambers
4.3.1 General <\/td>\n<\/tr>\n
15<\/td>\n4.3.2 Methods of achieving the required conditions in the test chamber
4.4 Measurements
4.4.1 Temperature
4.4.2 Air velocity
Table 1 \u2013 Influence parameters when testing heat-dissipating specimens <\/td>\n<\/tr>\n
16<\/td>\nAnnex A (informative) Effect of airflow on chamber conditions andon surface temperatures of test specimens
A.1 Calculation
A.2 Specimen temperature
A.3 Gradient between incoming and outgoing air <\/td>\n<\/tr>\n
18<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Environmental testing – Supporting documentation and guidance. Cold and dry heat tests<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2023<\/td>\n20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":440099,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-440089","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\/440089","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\/440099"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=440089"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=440089"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=440089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}