6 y# p( H) t- Q/ i+ c没人回答，只能自己来Type HL driver: LED Drivers intended for Use in Hazardous(Classified) Locations- @' L: B# Q. {2 W
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Type HL 驱动： 用于危险(分级)位置的LED驱动' s1 }6 h$ h! P. e 作者: Perse 时间: 2016-10-25 23:02
UL established a new "Type HL" designation for LED drivers, pattern after the requirements for Type HL ballasts. ; U* @6 x% W& @% F) ], O0 B+ N) A
These requirements for LED drivers were issued as a Certification Requirement Decision (CRD) to the standard UL 8750作者: Perse 时间: 2016-10-25 23:14
LED Drivers with the "Type HL" marking can be used in end product luminaires intended to be installed in hazardous (classified) locations areas, with out further evaluation.$ P% [4 w9 ~! |/ d
有 "Type HL" 标记的LED驱动可以不用进行更多评估， 直接用于安装在危险(分级)位置区域的l终端灯具作者: Perse 时间: 2016-10-25 23:28
Type HL drivers will be Listed or Recognized, as appropriate, in their regular ordinary location product category. ' B# g7 w2 L3 h* bType HL 驱动在他们常规位置的产品类别里，可以是适用的列名或认可作者: 不及格 时间: 2016-10-26 19:54
驱动器的Type HL是在UL8750里面定义的，简单来讲就是可以安装在Class I Division 2 类用于危险场合（Hazardous Location）的灯具里面，这种驱动器除完全符合8750的常规条款以外，内部必须灌胶。6 w3 \% T0 _+ z6 g
其实这个概念来源于935，做过Ballast的就很清楚。作者: andyshu 时间: 2016-12-8 11:16
学习了，谢谢