Unscreened Low Tension Cables Scrape Abrasion Testing. Part 1. An Interlaboratory Study on Scrape Abrasion Testing According to ISO DP 6722-1

摘要

A proposal for revision of ISO 6722/1, Road vehicles - Unscreened low tension cables, Part I: General requirements and test methods, specifies a method for scrape abrasion testing. Tests at different laboratories indicate large variations in the results obtained using this method. It is evident that a number of parameters have influence on the results. In an effort to clarify the influence of some of these parameters, the ISO/TC 22/SC3/WG4-Low Tension Cables decided to undertake an interlaboratory test focusing on different equipment, different conductor types and different insulating materials. This report presents the method used and the result of the interlaboratory test. It is concluded that it is not possible to compare data obtained on different equipment although they are made according to standard and that further investigations have to be done before including this method in an international standard.