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发表于 2010-8-13 10:28
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8.2 Flammability6 V1 p8 f- E5 F d, u9 K _* p
8.2.1 A polymeric material used for electrical insulation or enclosure of live parts shall have a flame class
, t2 q d. I1 Z! W+ }rating of HB, V-2, V-1, V-0, VTM-2, VTM-1, or VTM-0 in accordance with the requirements of the Standard$ _: R" P7 ?! Q* z. U d
for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL 94. The flame class( q1 R7 E9 m: ~
rating of the material shall be judged at the minimum thickness employed at the walls and barriers in the
9 `0 a; l# N/ edevice which are critical to the functioning of the insulation or enclosure of the device.
" e: S% r! N" b) J, w% I0 N9 {1 `Exception No. 1: Insulating materials employed in a self-contained receptacle shall instead comply with8 I" A2 c0 H4 M: W8 V/ M
40.1.
$ I7 O* Z) j* r' pException No. 2: A polymeric material that complies with either the 12 mm or 20 mm (3/4-inch) flame
) A' M4 o: m1 w9 h- ]) Kflammability test described in UL 746C, need not have a flammability class rating.! x8 T2 [7 V4 ]+ W7 s+ @ Y
8.2.1 revised April 6, 2010 |
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