{"id":233857,"date":"2024-10-19T15:15:04","date_gmt":"2024-10-19T15:15:04","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iec-61156-1-42018\/"},"modified":"2024-10-25T09:46:02","modified_gmt":"2024-10-25T09:46:02","slug":"bs-iec-61156-1-42018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iec-61156-1-42018\/","title":{"rendered":"BS IEC 61156-1-4:2018"},"content":{"rendered":"

IEC 61156-1-4:2018 specifies a method to assess the thermal behaviour of cables arranged in bundles, for digital communications. A method is described to determine the temperature increase in cable bundles for certain remote powering currents as a basis to analyse the expected performance under several test arrangements described in standards dealing with the installation of cabling systems. It is only intended to provide guidance to assess the thermal behaviour of cables for digital communications in reference environmental conditions and arrangements. It is therefore not intended to become a type of test method. This first edition cancels and replaces IEC PAS 61156-1-4, published in 2010. This edition includes the following significant technical changes with respect to the previous edition: a)   Several test arrangements are considered; b)   The mathematical approach was revised.<\/p>\n

PDF Catalog<\/h4>\n\n\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>\nCONTENTS <\/td>\n<\/tr>\n
5<\/td>\nFOREWORD <\/td>\n<\/tr>\n
7<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
8<\/td>\n1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions <\/td>\n<\/tr>\n
9<\/td>\n3.2 Symbols <\/td>\n<\/tr>\n
10<\/td>\n4 Testing procedure
4.1 General
4.2 Bundling of cables <\/td>\n<\/tr>\n
11<\/td>\nFigures
Figure 1 \u2013 Bundle of cables under test
Figure 2 \u2013 Thermocouple placement <\/td>\n<\/tr>\n
12<\/td>\n4.3 Testing current and measurement accuracy
4.4 Test conditions
4.5 Environmental conditions <\/td>\n<\/tr>\n
13<\/td>\nFigure 3 \u2013 Free air
Figure 4 \u2013 Open conduit (Tray) <\/td>\n<\/tr>\n
14<\/td>\nFigure 5 \u2013 Conduit <\/td>\n<\/tr>\n
15<\/td>\n4.6 Assessment of the concatenated loop resistance of all pairs
4.7 Data submission
Figure 6 \u2013 Sealed conduit <\/td>\n<\/tr>\n
16<\/td>\n4.8 Expression of results
Table 1 \u2013 Supporting information
Table 2 \u2013 Test data format <\/td>\n<\/tr>\n
17<\/td>\nAnnex A (informative)Modelling of cable bundle heating [3]
A.1 Cable heating model <\/td>\n<\/tr>\n
20<\/td>\nA.2 Evaluation of recorded data <\/td>\n<\/tr>\n
21<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Multicore and symmetrical pair\/quad cables for digital communications – Assessment of conductor heating in bundled cables due to the deployment of remote powering<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2018<\/td>\n22<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":233862,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[631,2641],"product_tag":[],"class_list":{"0":"post-233857","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-120-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/233857","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\/233862"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=233857"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=233857"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=233857"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}