|

楼主 |
发表于 2010-8-13 10:28
|
显示全部楼层
8.2 Flammability, i# t( ~0 C7 C" P w# z8 }# X8 X
8.2.1 A polymeric material used for electrical insulation or enclosure of live parts shall have a flame class
5 [# G8 E" o* }6 Rrating of HB, V-2, V-1, V-0, VTM-2, VTM-1, or VTM-0 in accordance with the requirements of the Standard* l" R7 R5 G7 o
for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL 94. The flame class
! Y1 R% G3 Q( E" F; Grating of the material shall be judged at the minimum thickness employed at the walls and barriers in the' b* K2 F7 g% {, \; K- \
device which are critical to the functioning of the insulation or enclosure of the device.
6 t( \8 J3 r9 nException No. 1: Insulating materials employed in a self-contained receptacle shall instead comply with* \6 ]$ @; J5 b |
40.1.9 E; E. ^6 e8 Z( N% T* w. m
Exception No. 2: A polymeric material that complies with either the 12 mm or 20 mm (3/4-inch) flame" {; g3 E* j, \! P6 f' ?/ e8 Q* x2 L! f
flammability test described in UL 746C, need not have a flammability class rating.3 l- l( W5 y/ W
8.2.1 revised April 6, 2010 |
|