# z1 u5 c+ Y' B* W没人回答，只能自己来Type HL driver: LED Drivers intended for Use in Hazardous(Classified) Locations 0 X5 T+ X" r9 j, J! t& b; [ " M4 X) ]$ Z. QType HL 驱动： 用于危险(分级)位置的LED驱动 * p, {& e" E1 U$ }8 G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. 0 F; }5 _( x% l& E; ]; W' T6 P- t' E5 e. n9 [' @
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. ' L1 W6 f/ ^+ F9 L% I8 N( p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., R. P3 r5 C) S2 D# y% R
Type 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。 c! _7 H# X2 ]6 ]" W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