20.500.12556/RUL-169250 Material composition testing related to measurement instrument enclosure design and safety The polymeric insulating materials widely used in measuring instrument enclosures must meet specific flammability requirements. In this study, we systematically assessed the impact of minor compositional changes, such as pigments and fillers, on horizontal burning (HB) classification according to the EN 60695-11-10 standard. We tested 64 polymer combinations at thicknesses of 1.5 mm and 3.0 mm, classifying samples into HB, HB40 or HB75 categories. The results demonstrated that additives significantly influenced the HB classifications more than thickness. Specifically, we classified 31 samples as HB, 16 as HB40, 15 as HB75, while two were unclassifiable. Several material groups consistently achieved specific HB classifications regardless of minor additive variations. These findings offer manufacturers clear guidance for selecting polymer-additive systems, facilitating informed decisions and enabling a streamlined “worst-case” testing strategy. Ultimately, this approach enhances manufacturers’ ability to efficiently achieve product safety compliance, reducing certification costs without compromising safety. testing horizontal burning insulation materials electric safety preskušanje vodoravna gorljivost izolacijski material električna varnost true false true Angleški jezik Slovenski jezik Članek v reviji 2025-05-21 07:16:04 2025-05-21 07:16:10 2025-06-18 13:48:48 0000-00-00 00:00:00 2025 0 0 16 str. iss. 10, art. 5480 Vol. 15 May-2 2025 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 621.317 2076-3417 10.3390/app15105480 236533251 applsci-15-05480.pdf applsci-15-05480.pdf 1 EF3FEB73F61908E14F9500C0F92F7A86 e538d39137932b112cc78a7426ecba5ad4329c04fb00dc5edcbec882b08bcb27 d5bb978d-3601-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210503 https://www.mdpi.com/2076-3417/15/10/5480 1 746c8ab2-3601-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210502 Fakulteta za elektrotehniko 0 0 0