DSH 507 Protection against electric shock

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广东安规检测
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DSH 507 3 L! [. H8 X1 j) y! X& `: s- o% D 6 V, q* _2 F1 g, _

Protection against electric shock

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60335-1(ed.3)

Question:
Is basic insulation accessible through opening in earthed metal enclosure having paint
8 r) c4 C( \" V" ^8 v1 f/ Kcoating acceptable?
7 Z( ?3 c/ |0 I: H, ^Rationale:
& w8 f! }5 H) ]& ]  W; MSee question.
3 @. O/ d7 l" Z; j" Z7 d7 y7 E! NDecision:
& |/ m1 Z# L+ R/ R2 I; [& ]If the opening is such that the basic insulation is accessible without making contact at the
same time with the earthed metal parts, it is considered as a class II construction and thus not
% a7 m7 N: l5 S; Qacceptable.
3 |) t' F4 c- P% S% M3 SIf the basic insulation and the earthed metal parts are accessible at the same time, this is
! Z- g$ V/ {$ c! ^7 O2 Xacceptable, as the earthing is one if the protection means.
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  ]+ D; U2 }+ o; `. V
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