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发表于 2010-8-13 10:28
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8.2 Flammability4 G6 ^+ b, s' b; s9 M9 n
8.2.1 A polymeric material used for electrical insulation or enclosure of live parts shall have a flame class
: c k; K7 u: l. o, T6 P) frating of HB, V-2, V-1, V-0, VTM-2, VTM-1, or VTM-0 in accordance with the requirements of the Standard
& ^9 n7 |! {3 r' T9 |* J1 Hfor Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL 94. The flame class
; M8 Z( p+ c% @, k1 s) |9 u0 Srating of the material shall be judged at the minimum thickness employed at the walls and barriers in the
% {" c, T% Z3 o3 C1 i1 [device which are critical to the functioning of the insulation or enclosure of the device.- {3 f6 ]6 Q& G5 D& }. v
Exception No. 1: Insulating materials employed in a self-contained receptacle shall instead comply with4 V+ @+ @" Y& D4 z9 z6 h
40.1.0 ?; n- L# Q# U7 M
Exception No. 2: A polymeric material that complies with either the 12 mm or 20 mm (3/4-inch) flame; Y2 N8 i3 e+ U* N3 i$ z
flammability test described in UL 746C, need not have a flammability class rating.
; { d# X& E. v6 B9 k! s% _8.2.1 revised April 6, 2010 |
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