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

IPX5X6X7喷水试验机

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可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

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GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

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家电温升测试角

针焰试验机现货

热电偶焊机现货

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

! b* O9 P. ^1 Q' L# V1) In case of components mounted on a printed wiring board (PWB) and placed across safety
insulation (e.g. reinforced insulation), how to deal with different requirement both for printed wiring
4 p" \( f1 E: x$ ]% [7 v1 ~4 Omaterial and different group of materials?
( o7 f5 Q. Z% {# m" l2) In case of components mounted on a printed wiring board (PWB) and placed across safety
insulation (e.g. reinforced insulation), how to deal in case of different material group for PWB and
9 q0 ~) [" E; J" C- q- P  E) h% Lcomponents placed on it (e.g. PWB of material group I and relay base of material group IIIa)?
5 P5 }' {! Z: b0 z0 N1 o, E3 L
Decision
) c6 Q( |: ~& {3 k0 d4 A3 ?1) 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.
+ ~# k: I; L: w$ _: o! OIn this case, the column showing the worst case has to be used.
1 N3 u. O' A  B1 }1 S0 z9 `2) In case of different material group both for PWB and components, column showing the worst case
! R# @1 a7 l' ihas 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
# B( f* f; F  a- vannex B. See enclosed drawings
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