标题: 关于62368 PS2和PS3的问题请教一下，各位大佬！ [打印本页] 作者: 夏天的风！！ 时间: 2021-11-29 14:24 标题: 关于62368 PS2和PS3的问题请教一下，各位大佬！ If the following materials and parts are not separated from a PIS according to the % Q9 g0 @+ F3 s) m# [4 u$ L" k8 u( brequirements of 6.4.7, then the materials and parts shall not ignite during single fault' s& F6 ?! {* a K1 W+ W! H
conditions as specified in 6.4.3.2:' Q. H; o, o6 v6 [: l
– supplies, consumable materials, media and recording materials; and ( O, N2 o5 M4 B: ~1 c& r% D– parts that are required to have particular properties in order to perform intended functions, ; e: B: w. Y' R1 Q3 u; D. p$ qsuch as synthetic rubber rollers, ink tubes and material requiring optical characteristics7 Q0 x! d1 ~: g- R. O
PS2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 4 i7 }7 ] M' Q h; F : I* V2 }" x8 n7 I" o) _- \- |– by providing a fire enclosure as specified in 6.4.8.6 W# G: q# Z8 r2 X( U9 Y
Within the fire enclosure, combustible materials that do not comply with the flammability : u3 T& N) [( w& H4 p0 _5 H8 h6 _/ |requirements for PS2 or PS3 circuits shall comply with the flammability test of Clause S.1 or L* _8 J+ o3 z0 M xbe made of V-2 class material, VTM-2 class material or HF-2 class foamed material.6 |) \- H2 K$ W! l/ t/ y7 l
These requirements do not apply to:) b" C+ ~5 r: k, g2 Y
– parts with a volume of less than 1 750 mm3;) c0 q0 F4 T) E
– parts with a mass of combustible material of less than 4 g;: j9 [- h% Z" n1 w" O
– supplies, consumable materials, media and recording materials;( Z1 X3 T+ r1 U
– parts that are required to have particular properties in order to perform intended functions, ( y. t6 H3 Q, v8 V1 b, Xsuch as synthetic rubber rollers, ink tubes and material requiring optical characteristics; : U7 _& d+ p4 g8 u0 `. p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。( |, f# I2 n! k