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If the following materials and parts are not separated from a PIS according to the. _$ j9 W0 e0 H+ E5 T
requirements of 6.4.7, then the materials and parts shall not ignite during single fault
2 W, J( l: b3 _' c# J4 l, j2 kconditions as specified in 6.4.3.2:# m7 u6 e) |) y1 F4 Z
– supplies, consumable materials, media and recording materials; and& K5 Z/ C3 v* A0 c# [5 a
– parts that are required to have particular properties in order to perform intended functions,. G/ ^( D* F7 c! ?; c! m2 v$ d
such as synthetic rubber rollers, ink tubes and material requiring optical characteristics
5 W. j4 ]1 W) O/ j* e; t3 C. wPS2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3 V/ |& K+ l, j" h: I8 Q1 `7 e: F* w
% h3 b, n/ Z) z3 b– by providing a fire enclosure as specified in 6.4.8.( ]2 O) N$ Q6 L; {: K4 U
Within the fire enclosure, combustible materials that do not comply with the flammability
" V! F0 Y+ V+ \# G/ s( [/ _- i9 v$ Irequirements for PS2 or PS3 circuits shall comply with the flammability test of Clause S.1 or
! p8 J) w6 G. A+ {; bbe made of V-2 class material, VTM-2 class material or HF-2 class foamed material.
8 V' n( V& q% Y# O5 x' tThese requirements do not apply to:* C& V5 c! a3 }
– parts with a volume of less than 1 750 mm3;
% O6 f, V3 P. n; P( @– parts with a mass of combustible material of less than 4 g;! u v. h; N" I
– supplies, consumable materials, media and recording materials;
( `3 y* L# w6 L4 U0 Y$ ~5 n0 @8 ?– parts that are required to have particular properties in order to perform intended functions,* L" m* N4 I3 k+ t' ?
such as synthetic rubber rollers, ink tubes and material requiring optical characteristics;
8 |9 W: q' z/ R8 I8 \6 F( h3 e1 K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。; g: t( A! U: C3 u: P& Y
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