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If the following materials and parts are not separated from a PIS according to the
; F6 }) K. l3 F5 y4 ~. F# w ~, qrequirements of 6.4.7, then the materials and parts shall not ignite during single fault
9 ?! j8 g8 ~' jconditions as specified in 6.4.3.2:
G& {1 g" T8 }* ]% o$ S( J. O2 p– supplies, consumable materials, media and recording materials; and
Y4 W) I: P T* B– parts that are required to have particular properties in order to perform intended functions,
+ U, j" F- f/ C0 `1 ^; u8 hsuch as synthetic rubber rollers, ink tubes and material requiring optical characteristics
) l3 \/ h; o% Y, G& P5 rPS2中有明确写到补给材料,介质或消耗材料要与PIS进行隔离,要满足5或13的要求,否者用6.4.3.2的单一故障去豁免% [ S9 I) N% E. [/ E8 q9 {
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– by providing a fire enclosure as specified in 6.4.8." R& J5 @2 P/ l3 S; T
Within the fire enclosure, combustible materials that do not comply with the flammability
: R9 D y6 w0 N. [3 I% Z/ j' y( t# Orequirements for PS2 or PS3 circuits shall comply with the flammability test of Clause S.1 or' P6 \' U; x1 Q
be made of V-2 class material, VTM-2 class material or HF-2 class foamed material.' k- f* g0 }. u% N" u2 u
These requirements do not apply to:
: z% S2 W, k( g: }: m0 h% G– parts with a volume of less than 1 750 mm3;$ g! R0 h4 p9 Q5 ], P
– parts with a mass of combustible material of less than 4 g;7 S. ~. h1 o* `# f# [0 Z3 J ~
– supplies, consumable materials, media and recording materials;
3 A% c2 y+ X) j9 P I– parts that are required to have particular properties in order to perform intended functions,
; S2 m3 G' ^$ zsuch as synthetic rubber rollers, ink tubes and material requiring optical characteristics;( M2 n7 Z0 W! w/ L$ w. t& c
按6.4.8的规定提供防火防护外壳(V-1),不符合PS2或PS3电路一部分的可燃性材料应符合第S.1章的可燃性试验或应用V-2级材料、VTM-2级材料或HF-2级泡沫材料制成,那么这个时候不考虑PIS的距离的问题,如果材料不符合上述要求,用V-0防火防护外壳或者材料安装在V-1印制板上(考虑PIS距离要求),不知道我的理解是否正确,是因为补给材料,介质或消耗材料无法满足V-2或S.1的要求,所以说不适用吗??那么一个终端产品,定期要更换这些材料,是否像PS2要与PIS进行隔离,个人认为要的。
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