DSH 1066_IEC 60730-1

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广东安规检测
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小型摆管淋雨试验机

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灯具防风罩

IK冲击试验机

UL498插头插座量规

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家电温升测试角

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家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

( a% z! v5 @3 [. P* v
1) In case of components mounted on a printed wiring board (PWB) and placed across safety
; R) p2 r6 M0 {+ vinsulation (e.g. reinforced insulation), how to deal with different requirement both for printed wiring
material and different group of materials?
) V( J5 ^1 v; c: x7 u" U2) In case of components mounted on a printed wiring board (PWB) and placed across safety
! z* H3 y7 T) n) B/ E( b* ^insulation (e.g. reinforced insulation), how to deal in case of different material group for PWB and
components placed on it (e.g. PWB of material group I and relay base of material group IIIa)?
& t7 J& g8 }& Y5 j" B
Decision
; W/ `( X; R& }7 H% }  K1) Column relevant to printed wiring material in micro-environment of pollution degree 1 and 2 can
only be used when there are no components placed on the PWB, across the investigated insulation.
; t: B; T5 i9 i$ e, C2 F9 x9 j3 ]3 CIn this case, the column showing the worst case has to be used.
' _! ~: s6 ^& d: {: i/ L$ ?5 \2) In case of different material group both for PWB and components, column showing the worst case
$ N8 h4 A2 B1 _& Ehas to be used.
Remark: For the scope of these decisions, a component is considered to be in contact with the PWB
if the surface of the component is located at a distance less than the “X” value indicated in table of
annex B. See enclosed drawings
5 p, C. M+ ?: e7 a9 l% Y% Z) R& T