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
! ?, N; k4 [2 @/ d5 hvoltage, class and sub-class shall be separately qualified”.
* f& N* f. L% g( e  KIf it is requested to qualify a dual-class X/Y capacitor (e.g. X1:400 V, Y2:250V), is it permissible to
9 ~* c3 Z- r! e% lperform one type test only by applying for each individual test the highest test severity?
: O! f+ V$ v7 D/ h1 ~6 WTo qualify a dual-class X/Y capacitor, testing laboratories may have different interpretations of this
5 Z& D* J, F% t" z  E& {) X5 tsentence.
Interpretation a): Some testing laboratories test the same capacitor series once for X1 and once for
Y2 at the same time in separate type tests.
Interpretation b): Other testing laboratories follow the opinion that the safety of the capacitors is also
: z$ r2 b: a- L7 _" P/ s( N. v" Eassured if a mixture of highest testing (peak) voltages of both sub-classes is used. This means worst
4 h3 n2 L- o+ l8 c0 bcase 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
) Y* z" G$ _6 V2 \, g( Ehighest test severity for each test.
Decision
When a range of dual-class capacitors (X/Y) is qualified, it is allowed to perform one type test only, if
/ U7 z5 O, ^* i* Y( D8 U8 wthe highest severity of the X or Y class is applied in each respective test.

4 q6 Z& u$ K& f; s- C$ X  ]8 |

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DSH 1048附件