|
|

楼主 |
发表于 2010-8-13 10:28
|
显示全部楼层
8.2 Flammability" @/ |6 w! b$ v* Q+ V; @
8.2.1 A polymeric material used for electrical insulation or enclosure of live parts shall have a flame class
7 y! T5 j0 \$ [6 P6 Rrating of HB, V-2, V-1, V-0, VTM-2, VTM-1, or VTM-0 in accordance with the requirements of the Standard, g0 U" j+ X; p. _+ A/ V' d7 R( q
for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL 94. The flame class: p5 k5 W) m/ h" P7 D% E3 a" D
rating of the material shall be judged at the minimum thickness employed at the walls and barriers in the' W; k( B7 i( |( o P
device which are critical to the functioning of the insulation or enclosure of the device.
0 J& J" ^. ?8 h9 X9 S9 R* s! T% [Exception No. 1: Insulating materials employed in a self-contained receptacle shall instead comply with+ B# r: b/ E, X2 D1 X
40.1.# ]& S, C8 ^) a! x# k, p/ Y, `7 s
Exception No. 2: A polymeric material that complies with either the 12 mm or 20 mm (3/4-inch) flame3 ^) P8 ]' d' [+ P8 ~
flammability test described in UL 746C, need not have a flammability class rating.! }4 J# d9 E0 b
8.2.1 revised April 6, 2010 |
|