DSH 1048

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广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

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

各种灯头量规现货

灼热丝试验机现货

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

稳定性试验台

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

Question
The first sentence of clause 3.4.3.1 of IEC 60384-14 states: ”Capacitors of each technology, rated
voltage, class and sub-class shall be separately qualified”.
& M5 o0 o1 v) Z, y2 }2 R3 JIf it is requested to qualify a dual-class X/Y capacitor (e.g. X1:400 V, Y2:250V), is it permissible to
perform one type test only by applying for each individual test the highest test severity?
) ]. n0 K" K! U1 ]/ b9 {7 `, x: dTo qualify a dual-class X/Y capacitor, testing laboratories may have different interpretations of this
$ c* e  A9 L& `sentence.
8 c( H7 g" Z$ s) R, cInterpretation a): Some testing laboratories test the same capacitor series once for X1 and once for
' {, p% N: s3 r& BY2 at the same time in separate type tests.
Interpretation b): Other testing laboratories follow the opinion that the safety of the capacitors is also
/ [) r" J$ h+ m) g% r" R2 f0 fassured if a mixture of highest testing (peak) voltages of both sub-classes is used. This means worst
# @& r, P5 }( I% Qcase testing, covering both sub-classes for certification.
Both interpretations may possibly lead to the result of compliance or non-compliance of the capacitor,
as in a) more samples are tested and in b) a single capacitor is more stressed.
From the technical point of view, it should be acceptable to perform one type test only by applying the
highest test severity for each test.
% N% f1 h( U& v* p2 I  B6 fDecision
When a range of dual-class capacitors (X/Y) is qualified, it is allowed to perform one type test only, if
/ z0 B* t9 X- L9 Cthe highest severity of the X or Y class is applied in each respective test.

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DSH 1048附件