UL 962标准解读（49）-苏州德立弗

UL 962标准解读（49）

返回列表 来源：原创发布日期：2022-03-09

继续给大家介绍下UL 962标准，今天介绍下“相对热指数”的概念

SA3.2 Relative thermal index
SA3.2 相对热指数

SA3.2.1 A polymeric material used as the enclosure of live parts shall have a mechanical with impact RTI and electrical temperature RTI of at least the temperature of the part measured during the normal temperature test.
SA3.2.1 用作带电部件外壳的高分子材料应具有具有冲击的机械RTI和电气温度RTI，至少温度的部分在正常期间测量温度测试。

Exception: When the temperature measured during the normal temperature test is less than 50°C (122°F) the polymeric material is not required to have an RTI rating.
例外：如果温度测试数据小于50℃，不需要要求RTI值。

SA3.3 Electrical properties
SA3.3 电气性能

SA3.3.1 A polymeric material used as the enclosure of live parts in direct contact with or within 1/32 inch (0.8 mm) of current-carrying parts that was not evaluated under the component standard shall have a HWI property that is as indicated in the table for Material Property Considerations in the Standard for Polymeric Materials – Use In Electrical Equipment Evaluations, UL 746C. CTI and HAI ratings are not required.
SA3.3.1 一种聚合物材料，用于直接接触或在1/32英寸内的带电部件的外壳(0.8 mm)未按部件标准评估的载流部件应具有HWI聚合物标准材料性能考虑表中所示的性能材料-在电气设备评估中使用，UL 746C不需要CTI和HAI评级。

今天关于UL962的分享就到这结束了，欢迎大家关注苏州德立弗检测技术服务有限公司，一起学习UL962相关知识，谢谢！

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