Ul746b pdf
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this document outlines a process for adding equivalent substitute insulation materials to a company’ s ul section general or their approved materials list for their manufactured end product based on the logic found in ul 746 and ul 1446. burning and glowing times are measured, if flaming drips ocour whether they ignite the cotton beneath or not, are the. this new edition of ansi/ ul 746c includes the alignment of the text in paragraph 9. by authority of the code of federal regulations:. ul 746b isbnpolymeric materials – long term property evaluations. a relative thermal index of a material is an indication of the material’ s ability to retain a particular property ( physical, electrical, etc. pdf), text file (. hvtr cti ( mils) ( mm) class rating rating rating rating rating rating 5 0. astm d374 astm d374 ul 94 ul746a ul746a ul746b ul746b ul746a ul746a thickness thickness flame hwi hai rti elec. the ul 746 standard series sets the safety, reliability, and performance benchmarks for polymer materials used in electrical equipment and applications. selection of oven temperatures. polymeric materials, short- term property evaluations. for each material, a number of relative thermal indices can be established. 1995 identifier- ark ark: / 13960/ t5w734t82 ocr abbyy finereader 11. 1 for the comparative tracking index ( cti) test the new requirements are substantially in accordance with proposal ( s) on this subject dated septem and decem. these standards provide testing requirements and evaluation criteria for mechanical, electrical, thermal, flammability, safety related properties and performance of these materials. it is a measure of the material’ s thermal endurance. 相對溫度等級 ( relative thermal index, rti) 是 ul 針對高性能塑料認證的重要參數之一, 可獲知材料在特定溫度與長時間應用下, 展現的機械強度與絕緣特性耐受力; 其亦為終端產品選料的重要依據。. vertical burn test with 20mm flame applied for two 10sec intervals separated by the time it takes for flaming combustion to stop after the first application of the flame. txt) or read online for free. the minimum aging time criterion is applicable for each primary property evaluated. ul 746b | ul standards & engagement | ul red line | edition 5 | standard for ul746b pdf polymeric materials - long term property evaluations | published date: decem | ansi approved: - ul746b pdf -. together with the standards mentioned. ul 94 v0, v- 1, v- 2. two sets of 5 specimen are tested. you will be able to choose your purchase options on the following pages. together with the standards mentioned in supplementary test procedures, section 3, these investigations provide data. available for subscriptions. by order of the executive director office of the federal register washington, d. listing of ul 746 series testing performed by the world leader in electrical testing, eltek international laboratories. the cost to purchase this standard varies depending on whether you are ordering a hardcopy, pdf or combination of the two. 由於 rti 評估涉及長時間老化程序 ( long term thermal aging, ltta), 測試耗日費時. pdf - free download as pdf file (. ul standard for safety polymeric materials – long term property evaluations. relative thermal index - electrical ul746b ° c 260 relative thermal index - mechanical w/ o impact ul746b ° c 240 relative thermal index - mechanical w/ impact ul746b ° c 180 flammability ul94 - v- 0 dielecticstrength, 2mm thk astm d149 kv/ mm 22 surface resistivity astm d2 volume resistivity astm d257 ohm* cm 10 17 l l l. 58 vthe ul yellow card. polymeric materials - short term property evaluations. we also offer two different types of subscriptions: a one year and a three year. 4 with that of table 6. ) when exposed to elevated temperatures for an extended period of time. document history. this standard utilizes generic relative thermal indexes ( rti) set by ul746b as ascertained by ul746a’ s infrared analysis testing. addeddate: 49: 09 identifier ul. ul standard edition 6 published date: septem last revision: janu ansi approved: janu dod approved: novem. to satisfy the requirements in ul 746s, recycled materials must meet horizontal burn test requirements, water exposure limits, and long- term tensile strength testing. the screening test is very helpful in determining which may be the preferred sampling technique. standard for polymeric materials - long term property evaluations. scribd is the world' s largest social reading and publishing site. tests for flammability of plastic materials for parts in devices and appliances. to arrange ul 746a and ul 746b testing of polymeric materials, request a quote online now or call. these requirements cover long- term test procedures to be used for the evaluation of materials used for parts intended for specific applications in end products. the following standards are directly related to the evaluation of polymeric materials. ul copyrighted material not authorized for further reproduction or distribution without permission from ul ul standard for safety for polymeric materials long term property evaluations, ul 746b. 10( e) ( 2) name of legally binding document: ul 746c: polymeric material- - use in electrical equipment evaluations. this process logic can apply to ansi and ieee standards that reference ul standards 746 and/ or ul 1446. polymeric materials, long- term property evaluations. 0 ( extended ocr). the highest oven temperature ( t1) selected is to produce an anticipated end point of the material' s property at this temperature in not less than 500 hours.